Zone 135, Master Map
Normal View
+24°00'
Zone Master, Normal View, 10 deg FOV
c
Gemini
Crab Nebula
M1
ι
+22°00'
e
Orion
+20°00'
ζ
f
+18°00'
χ1
χ2
d
06h 00m
05h 52m
05h 44m
05h 36m
05h 28m
05h 20m
+16°00'
Taurus
05h 12m
05h 04m
04h 56m
Zone 135, Map 1
Normal Image
STF 694
STF 679
STF 683
103 Tau
NGC 1802
STF 686
NGC 1746
NGC 1750
+23°00'
Pourteau 535
NGC 1758
+24°00'
118 Tau
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+22°00'
Hipparcos 713
h364
114 Tau
105 Tau
+21°00'
ι
Jonckheere 144
STF 680
STF 674
STF 665
05h 30m
05h 25m
05h 20m
05h 15m
OS 95
05h 10m
05h 05m
05h 00m
Zone 135, Map 1
Mirror Image
118 Tau
STF 694
NGC 1802
STF 686
Pourteau 535
NGC 1758
+23°00'
NGC 1746
NGC 1750
+24°00'
103 Tau
Hipparcos 713
h364
114 Tau
+22°00'
STF 679
STF 683
98 Tau
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
105 Tau
+21°00'
ι
STF 680
Jonckheere 144
STF 674
OS 95
05h 00m
05h 05m
STF 665
05h 10m
05h 15m
05h 20m
05h 25m
05h 30m
Zone 135, Map 2
Normal Image
Jonckheere 144
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 680
STF 674
STF 665
+19°00'
OS 95
Kustner 87
+18°00'
STF 670
h 3275
Jonckheere 1818
115 Tau
NGC 1817
Taurus
h3270
h3267
NGC 1807
h3268
+16°00'
Collinder 65
Orion
h3269
+17°00'
111 Tau
STF 697
Haupt 11
h3273
05h 30m
05h 25m
05h 20m
05h 15m
05h 10m
05h 05m
05h 00m
Zone 135, Map 2
Mirror Image
STF 680
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Jonckheere 144
STF 674
OS 95
+19°00'
STF 665
Kustner 87
STF 670
Jonckheere 1818
115 Tau
+18°00'
h 3275
+17°00'
111 Tau
NGC 1817
h3269
NGC 1807h3270
h3268
Taurus
+16°00'
h3267
Collinder 65
STF 697
Orion
Haupt 11
h3273
05h 00m
05h 05m
05h 10m
05h 15m
05h 20m
05h 25m
05h 30m
Zone 135, Map 3
Normal Image
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Pourteau 768
+24°00'
OSS 66
Pourteau 779
h373
STF 755
+23°00'
H IV 48
Taurus
Pourteau 789
Orion
A. G. 99
OS 125
NGC 1952
Basel 11b
STF 742
+22°00'
STF 777
Crab Nebula
M1
Berkeley 21
STF 772
Zeta Tau ζ
Bur 92
+21°00'
STF 787
Hipparcos 789
Bur 93
STF 740
OSS 118
A. G. 103
χ1
Hussey 40
06h 00m
05h 55m
05h 50m
NGC 2026
05h 45m
A 2434
Barton 2327
05h 40m
05h 35m
05h 30m
Zone 135, Map 3
Mirror Image
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
118 Tau
Pourteau 768
+24°00'
OSS 66
Pourteau 779
H IV 48
Tauru
Pourteau 789
+23°00'
h373
STF 755
Orion
STF 777
114 Tau
Crab Nebula M1
NGC 1952
Basel 11b
Gemini
STF 742
+22°00'
A. G. 99
Berkeley 21
STF 772
STF 787
ζ
Zeta Tau
Bur 92
Hipparcos 789
+21°00'
STF 740
Bur 93
OSS 118
χ1
A 2434
05h 30m
05h 35m
Hussey 40
NGC 2026
Barton 2327
05h 40m
Bur 1400
05h 45m
05h 50m
05h 55m
06h 00m
Zone 135, Map 4
Normal Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Hussey 40
NGC 2026
+20°00'
A. G. 103
A 2434
Barton 2327
Bur 1400
STF 771
STF 813
Jonckheere 2394
+19°00'
STF 770
A 2437
Jonckheere 248
119 Tau
+18°00'
h3275
STF 806
OS 126
Taurus
STF 759
STF 730
+16°00'
OS 114
STF 733
Orion
STF 766
OS 115
06h 00m
05h 55m
05h 50m
05h 45m
05h 40m
05h 35m
+17°00'
Bur 1401 h5539
05h 30m
Zone 135, Map 4
Mirror Image
Hussey 40
NGC 2026
A 2434
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Barton 2327
STF 770
STF 813
Jonckheere 2394
A 2437
+19°00'
Bur 1400
STF 771
Jonckheere 248
119 Tau
STF 806
STF 759
Taurus
OS 126
Bur 1401
+17°00'
h5539
+18°00'
h3275
STF 730
+16°00'
OS 114
STF 733
STF 766
Orion
OS 115
05h 30m
05h 35m
05h 40m
05h 45m
05h 50m
05h 55m
06h 00m
Zone 135
Index
1 Reference Star, 61 Double Stars, 1 Carbon Star,
1 Supernova Remnant, 10 Open Clusters
Flamsteed
h3275 ................................................... 12
h364 ....................................................... 6
h373 ..................................................... 26
h5539 ................................................... 39
Haupt 11............................................... 16
Hipparcos 713 ........................................ 6
Hipparcos 789 ...................................... 30
Hussey 40............................................. 30
103 Tau .................................................. 7
105 Tau .................................................. 4
111 Tau ................................................ 13
114 Tau .................................................. 9
115 Tau ................................................ 11
119 Tau ................................................ 36
A
J
A 2434 ................................................. 29
A 2437 ................................................. 43
A. G. 99 ............................................... 22
Jonckheere 144 ..................................... 5
Jonckheere 1818 .................................. 16
Jonckheere 2394 .................................. 41
Jonckheere 248 .................................... 42
B
Barton 2327 ......................................... 27
Basel 11b ............................................. 34
Berkeley 21.......................................... 35
Bur 1400 .............................................. 43
Bur 1401 .............................................. 40
Bur 92 .................................................. 27
Bur 93 .................................................. 25
K
Kustner 87............................................ 15
N
NGC 1746 ............................................ 10
NGC 1750 .............................................. 9
NGC 1758 ............................................ 10
NGC 1802 ............................................ 11
NGC 1807 ............................................ 19
NGC 1817 ............................................ 20
NGC 1952 ............................................ 32
NGC 2026 ............................................ 31
C
Collinder 65 ......................................... 19
H
h3267 ................................................... 13
h3268 ................................................... 14
h3269 ................................................... 15
h3270 ................................................... 14
h3273 ................................................... 15
O
OS 114 ................................................. 42
-1-
Zone 135
OS 115 ................................................. 40
OS 126 ................................................. 40
OS 95 ................................................... 18
OSS 118............................................... 23
OSS 66................................................. 22
STF 730................................................ 36
STF 733................................................ 38
STF 740................................................ 21
STF 742................................................ 28
STF 755................................................ 23
STF 759................................................ 37
STF 766................................................ 37
STF 770................................................ 44
STF 771................................................ 39
STF 772................................................ 24
STF 777................................................ 25
STF 787................................................ 31
STF 806................................................ 38
STF 813................................................ 41
P
Pourteau 535 .......................................... 7
Pourteau 779 ........................................ 28
Pourteau 789 ........................................ 26
S
STF 665 ............................................... 18
STF 670 ............................................... 17
STF 674 ................................................. 4
STF 680 ................................................. 3
STF 686 ................................................. 3
STF 694 ................................................. 8
STF 697 ............................................... 12
Z
Zeta Tau ............................................... 21
-2-
Zone 135
Zone 135, Map 1
Double Stars
Easy
STF 686
Rating: 2 E
ADS 3922; SAO 77122
Position: 0521+2402
A
B
Magnitude
9.21
9.40
Separation PA
—
—
9.3 +
225 +
Year
—
1991
Spectra
F2
Colors
pO
pB
Notes:
1830: 9.2 @ 220. 27 measurements. The stars share common proper motion.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.5 inches.
Separation: AB = 2.52 miles.
Distance (LY): 174
Total luminosity (Suns): 2.5
STF 680
Rating: 3 E
ADS 3894; HD 34579; SAO 77098
Position: 0519+2008
A
B
Magnitude
6.12
9.92
Separation PA
—
—
9.1 +
203 +
Notes:
1827: 8.7 @ 202. 16 measurements.
-3-
Year
—
1991
Spectra
G8 III
G1 IV/V
Colors
O
G
Zone 135
Observations:
C8 at 104x. Some observers report colors of Y and B. The color of star B is most
unusual.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.7 inches; B = 17.6 inches.
Separation: AB = 6.12 miles.
Distance (LY): 431
Total luminosity (Suns): 54
105 Tau
South 466; HD 32991; SAO 76972
Position: 0508+2143
A
B
Magnitude
5.89
9.10
Rating: 4 E
Separation PA
—
—
110.6 250 -
Year
—
1958
Spectra
B3 V
Colors
yW
bW
Notes:
1825: 111.5 @ 251. 14 measurements. Star A is a spectroscopic binary and a shell
star seen pole-on. It is a member of the Cas-Tau OB1 Association and rotates at 220 kps.
It is also an occultation binary.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.6 inches.
Separation: AB = 178 miles.
Distance (LY): 1,030
Total luminosity (Suns): 319
STF 674
CD Tau; ADS 3866; HD 34335; SAO 77084
Position: 0517+2008
A
B
Magnitude
6.69
9.75
Separation PA
—
—
10.0 149 +
-4-
Rating: 4 E
Year
—
1991
Spectra
F7 V
K2 V
Colors
Y
O
Zone 135
Notes:
1828: 10.6 @ 147. 22 measurements. The primary is an Algol type system (3.44 day
period).
Observations:
C8 at 83x. It forms the NE vertex of a 7m triangle.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 1.06 inches; B = 39.0 inches.
Separation: AB = 3.73 miles.
Distance (LY): 239
Total luminosity (Suns): 9.9
Jonckheere 144
Rating: 4 E
ADS 3945; HD 34976
Position: 0522+2008
A
B
Magnitude
9.67
10.10
Separation PA
—
—
6.4 +
174 +
Year
—
1958
Notes:
1893: 5.7 @ 171. 17 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.3 inches.
Separation: AB = 2,218 feet.
Distance (LY): 43
Total luminosity (Suns): 0.03
-5-
Spectra
F
Colors
W
W
Zone 135
h364
Rating: 4 E
HD 243252
Position: 0524+2208
A
B
Magnitude
10.00
10.59
Separation PA
—
—
10.7 +
143 =
Year
—
1991
Spectra
F2
Colors
W
W
Notes:
1893: 10.6 @ 143. 6 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.10 inches.
Separation: AB = 32.7 miles.
Distance (LY): 1,960
Total luminosity (Suns): 47
Hipparcos 713
Rating: 4 E
HD 243549; SAO 77166
Position: 0526+2250
A
B
Magnitude
10.09
10.27
Separation PA
—
—
24.1 +
129 =
Year
—
1991
Spectra
G0
Colors
W
W
Notes:
1892: 24.0 @ 129. 10 measurements.
May be optical because Hipparcos gives different distances (3,580 and 1,490 light
years).
Observations:
C11 at 115x.
-6-
Zone 135
Pourteau 535
Rating: 5 E
HD 32575; SAO 76952
Position: 0505+2348
A
B
Magnitude
7.17
11.90
Separation PA
—
—
12.7
103
Year
—
1897
Spectra
K0
Colors
O!
?
Notes:
1 measurement.
Observations:
C8 at 104x. It lies on the east edge of open cluster NGC 1746, which forms a grainy,
almost nebulous background to the view.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 33.5 inches.
Separation: AB = 5.00 miles.
Distance (LY): 251
Total luminosity (Suns): 6.6
Moderate
103 Tau
Edgecombe 2; ADS 3709; HD 32990; SAO 76974; H V 114 (BC)
Position: 0508+2416
A
B
C
Magnitude
5.50
12.00
8.60
Separation
—
14.4 +
35.4 +
PA
—
150 +
197 =
Year
—
1925
1977
Rating: 4 M
Spectra
B2 V
B9.5
Colors
W
?
B
Notes:
AB 1878: 12.9 @ 148. 3 measurements. The primary is a shell star and a
spectroscopic binary (58.31 day period). It also rotates at 98 kps and is a member of the
Cas-Tau OB1 Association.
AC 1878: 35.0 @ 197. 6 measurements.
Aa 1991: 0.4 @ 207. 2 measurements.
-7-
Zone 135
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.2 inches; B = 9.60 inches.
Separation: AB = 71.9 miles; AC = 177 miles.
Distance (LY): 3,200
Total luminosity (Suns): 5,513
Difficult
STF 694
Hall 2 (C); ADS 3981; HD 35187; SAO 77144
Position: 0524+2458
A
B
C
Magnitude
7.78
7.93
15.50
Separation
—
1.0 10.2 +
PA
—
8+
347 +
Rating: 3 D
Year
—
1995
1922
Notes:
AB 1827: 1.0 @ 5. 41 measurements.
AC 1876: 8.7 @ 339. 2 measurements.
Observations:
C11 at 634x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.57 inches.
Separation: AB = 4,013 feet; AC = 7.80 miles.
Distance (LY): 490
Total luminosity (Suns): 27
-8-
Spectra
A2 V?
Colors
W
W
No
Zone 135
114 Tau
h365; ADS 4048; HD 35708; SAO 77184
Position: 0528+2156
A
B
C
D
Magnitude
4.88
10.90
11.66
12.65
Separation
—
37.8 =
58.5 73.3 -
Rating: 5 D
PA
—
349 +
193 279 -
Year
—
1925
1925
1925
Spectra
B3 IV
Colors
W!
?
W
?
Notes:
AB 1877: 37.8 @ 347. 5 measurements. Star A is an eclipsing binary, an occultation
binary, and an infra-red source.
AC 1877: 58.8 @ 194. 6 measurements.
AD 1877: 74.3 @ 280. 5 measurements.
Member of the Cas-Tau OB1 Association.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.0 inches.
Separation: AB = 41.3 miles; AC = 63.9 miles; AD = 80.0 miles.
Distance (LY): 700
Total luminosity (Suns): 435
Deep Sky Objects
NGC 1750
Other Names: H VIII 43
Astronomical League Program: Herschel II Club
Position: 0504+2341
Type: Oc
Dimensions: 8' x 15'
Notes:
It is 200 million years old.
-9-
Rating: 3 E
Zone 135
Observations:
C11 at 115x. Very tight group, dominated by a line of five brighter stars with a very
acute triangle on the S side. 28 stars counted.
NGC 1746
Other Names: Melotte 28; Collinder 57; NGC 1750; NGC 1758
Astronomical League Program: Binocular Deep Sky Club
Rating: 4 E
Position: 0504+2349
Type: Oc
Dimensions: 45'
Class: III 2p
Cluster population: 60
Magnitude: 6.1
Notes:
The earliest stars are of spectral class B5. The brightest star is 8m.
This cluster lies 29,000 light years from the galaxy's center and 250 south of its
central plane. It is 155 million years old.
Observations:
C8 at 65x. Very large and sparse, it is actually a denser region of NGC 1750.
Model (where the Sun is a baseball):
Its diameter would be 5,900 mi. Its stars would be 740 mi apart
Distance (LY): 2,480
Luminosity (suns): 1,750
NGC 1758
Other Names: OCL 453; H VII 21
Rating: 4 E
Position: 0505+2347
Type: Oc
Class: IV 1 p
Dimensions: 39'
Observations:
C11 at 115x. Large but faint group. About 30 stars at the very edge of perception,
framed by three brighter stars.
- 10 -
Zone 135
NGC 1802
Other Names: H VIII 41
Rating: 5 E
Position: 0510+2408
Type: Oc
Observations:
C11 at 115x. Very poor group built on a NW/SE line of six fainter stars with about
ten more.
Distance (LY): 1,300
Zone 135, Map 2
Double Stars
Easy
115 Tau
OS 107; ADS 4038; HD 35671; SAO 94554
Position: 0527+1758
A
B
C
Magnitude
5.40
10.10
11.80
Separation
—
10.2 10.1 +
Rating: 1 E
PA
—
305 343 +
Year
—
1963
1963
Spectra
B5 V
Colors
bW
bW
?
Notes:
AB 1843: 10.7 @ 317. 14 measurements. The primary is an occultation binary
resolved by speckle.
AC 1899: 10.0 @ 341. 4 measurements.
This star is a member of the Pleaides group (Cas-Tau OB1 Association) and rotates at
155 kps.
- 11 -
Zone 135
Observations:
C8 at 83x. Moderate field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.4 inches.
Separation: AB = 10.7 miles; AC = 10.6 miles.
Distance (LY): 670
Total luminosity (Suns): 253.61
STF 697
Rating: 2 E
ADS 3969; HD 35173; SAO 94512
Position: 0523+1602
A
B
Magnitude
7.27
8.28
Separation PA
—
—
26.1 +
286 +
Year
—
1991
Spectra
B8 V
A V?
Colors
W
B
Notes:
1828: 25.9 @ 285. 37 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars exhibit a small common
proper motion.
Observations:
C8 at 104x. Moderate field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 1.22 inches.
Separation: AB = 42.4 miles.
Distance (LY): 1,040
Total luminosity (Suns): 141
h3275
OSS 64; AC = A 2453; ADS 4087; HD 36073; SAO 94589
Position: 0530+1825
A
B
C
Magnitude
7.64
13.60
8.15
Separation
—
10.7 +
55.9 +
PA
—
129 +
21 =
- 12 -
Year
—
1917
1992
Rating: 2 E
Spectra
A0 V
F
Colors
W
No
L
Zone 135
Notes:
AB 1879: 9.9 @ 122. 5 measurements.
AC 1875: 52.9 @ 21. 23 measurements. Hipparcos/Tycho mission data show
different distances for these stars (650 and 930 light years); they may be optical.
C has an 11.84m companion at 1.4 @ 253 (1991).
Observations:
C8 at 104x. Rich field.
111 Tau
South 478; HD 35296; SAO 94526
Position: 0524+1721
A
B
Magnitude
4.99
8.80
Rating: 3 E
Separation PA
—
—
99.0 +!! 271 =
Year
—
1979
Spectra
G0 V
K0
Colors
Y!
yO
Notes:
1825: 61.8 @ 271. 21 measurements. Star A is a spectroscopic binary. The stars
have different proper motions.
Observations:
C8 at 104x. Two other stars share the field, both of 8m.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.45 inches; B = 2.40 inches.
Separation: AB = 7.42 miles.
Distance (LY): 48
Total luminosity (Suns): 1.86
h3267
Rating: 4 E
HD 32879; SAO 94328
Position: 0507+1650
A
B
Magnitude
8.46
10.30
Separation PA
—
—
28.1 153 +
- 13 -
Year
—
1991
Spectra
F8 V
Colors
W
W?
Zone 135
Notes:
1903: 28.2 @ 152. 6 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.72 inches.
Separation: AB = 12.7 miles.
Distance (LY): 290
Total luminosity (Suns): 3.1
h3268
Rating: 4 E
ADS 3745; HD 33417; SAO 94368
Position: 0511+1630
A
B
Magnitude
8.86
10.20
Separation PA
—
—
9.9 +
269 +
Year
—
1961
Spectra
G5
Colors
Y
W
Notes:
1905: 9.2 @ 267. 4 measurements.
Observations:
C8 at 104x. It is just S of the center of the sparse open cluster NGC 1807.
h3270
Rating: 4 E
HD 241578;
Position: 0513+1629
A
B
Magnitude
10.41
10.64
Separation PA
—
—
13.8 331 +
Notes:
1901: 13.9 @ 327. 7 measurements.
Observations:
C11 at 115x.
- 14 -
Year
—
1991
Spectra
A0
Colors
W
W
Zone 135
Kustner 87
Rating: 4 E
HD 242893; SAO 94488
Position: 0522+1854
A
B
Magnitude
7.71
10.09
Separation PA
—
—
35.9 104 -
Year
—
1991
Spectra
G0
Colors
yW
pB
Notes:
1896: 36.3 @ 105. 9 measurements
Hipparcos/Tycho mission data show different distances for these stars (2,300 and 41
light years); they may be optical.
Observations:
C8 at 104x. A 7.8m Y star lies 16 min NE. (I first thought this star might be Kustner,
but it turns out to be SAO 94501, a K0 star.)
Moderate field.
h3273
Rating: 4 E
HD 243716
Position: 0527+1513
A
B
Magnitude
9.03
9.90
Separation PA
—
—
9.7
108
Year
—
1904
Spectra
G0
Colors
W
W
Notes:
1 measurement.
Observations:
C11 at 115x.
h3269
Rating: 5 E
HD 33572; SAO 94379
Position: 0512+1645
A
B
Magnitude
8.62
10.72
Separation PA
—
—
19.5 62 +
- 15 -
Year
—
1961
Spectra
G5
Colors
pY
rO
Zone 135
Notes:
1880: 19.7 @ 61. 6 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.1 inches.
Separation: AB = 8.55 miles.
Distance (LY): 281
Total luminosity (Suns): 2.52
Haupt 11
Position: 0512+1538
A
B
Magnitude
9.74
11.40
Rating: 5 E
Separation PA
—
—
12.0
38
Year
—
1961
Spectra
F5
Colors
W
W
Notes:
1 measurement.
Observations:
C8 at 104x. It is faint, and in a sparse field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.00 inches.
Separation: AB = 8.73 miles.
Distance (LY): 466
Total luminosity (Suns): 2.47
Jonckheere 1818
Rating: 5 E
HD 242445; SAO 94450
Position: 0519+1800
A
B
Magnitude
9.23
10.50
Separation PA
—
—
6.5 +
353 +
- 16 -
Year
—
1956
Spectra
K0 IV
Colors
yO
rO?
Zone 135
Notes:
1897: 6.1 @ 350. 3 measurements.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.5 inches.
Separation: AB = 2.80 miles.
Distance (LY): 272
Total luminosity (Suns): 1.6
Moderate
STF 670
Rating: 3 M
ADS 3854; HD 34251; SAO 94431
Position: 0517+1826
A
B
Magnitude
7.16
7.87
Separation PA
—
—
2.5 +
164 -
Year
—
1998
Spectra
B3 V
Colors
W
W
Notes:
1830: 2.3 @ 171. 58 measurements.
There is an 11.00m companion to B at 0.7" in pa 346 (1994).
Observations:
C8 at 280x. Some observers report both as B. Webb saw them as W and bW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 1.21 inches.
Separation: AB = 4.29 miles.
Distance (LY): 1,100
Total luminosity (Suns): 150
- 17 -
Zone 135
Difficult
OS 95
Rating: 4 D
ADS 3672; HD 32642; SAO 94306
Position: 0506+1948
A
B
Magnitude
6.48
7.53
Separation PA
—
—
1.1 +
302 -
Year
—
1999
Spectra
A5m V
Colors
W
W
Notes:
1843: 0.5 @ 0. Over 100 measurements.
Observations:
C8 at 697x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.10 inches.
Separation: AB = 4,224 feet.
Distance (LY): 464
Total luminosity (Suns): 60
STF 665
Rating: 4 D
ADS 3837; HD 34117
Position: 0516+1944
A
B
Magnitude
9.08
9.55
Separation PA
—
—
1.6 254 -
Notes:
1831: 1.8 @ 260. 37 measurements.
Observations:
C8 at 280x. Difficult.
- 18 -
Year
—
1997
Spectra
F0
Colors
W
W
Zone 135
Deep Sky Objects
Easy
Collinder 65
Rating: 3 E
Position: 0526+1600
Type: Oc
Dimensions: 220.0'
Class: II 3p
Magnitude: 3.0
Notes:
This cluster is 26 million years old.
Observations:
C8 at 10x. It looks nice in the spotter (it is far too large for a telescope). I counted 15
stars in my 10x50 spotter.
Distance (LY): 1,010
Total luminosity (Suns): 5,030
NGC 1807
Rating: 4 E
Other Names: Melotte 29; Collinder 59; Raab 21
Astronomical League Program: Urban Deep Sky Club, Binocular Deep Sky Club
Position: 0511+1632
Type: Oc
Dimensions: 17'
Class: II 2p
Cluster population: 20
Magnitude: 7.5
Notes:
The earliest spectral type is A2.
Observations:
C8 at 65x. It resembles a miniature Orion! It is a fine but sparse sight.
C11 at 115x. A rather bright, loose group of about 20 stars, in the shape of a man
with outstretched arms. Delicate.
- 19 -
Zone 135
Moderate
NGC 1817
Rating: 5 M
Other Names: Collinder 60; Raab 22; H VII 4
Astronomical League Program: Herschel 400 Club, Urban Deep Sky Club, Binocular
Deep Sky Club
Position: 0512+1642
Type: Oc
Dimensions: 15'
Class: IV 2r
Cluster population: 60
Magnitude: 7.7
Notes:
It is 409 million years old and includes an Ap star. The earliest spectral type is A0.
The brightest star is 9m (900 times brighter than the Sun).
The cluster lies 33,500 light years from the galactic center and 1,350 light years below
its plane.
Observations:
C8 at 83x. This is a sparse cluster with two condensations separated by a gap. Note
the 5-star chain on the W end. The westernmost group is NGC 1807, and gives an
impression called "the poor man's Double Cluster" by Steve Coe.
At the center is a "V" pattern, and there are three tight clumps of faint stars within
1817; these clumps form an equilateral triangle. A close double of even stars lies a few
minutes SE.
C11 at 115x. Very rich and faint group with h3269. Four 11m stars in a diamond,
plus about 60 stars of 13m-15m in a scattered dusty field. As you wait, more and more
stars pop into view. Nice effect!
Model (where the Sun is a baseball):
Its diameter would be 9,550 miles and its stars would be 1,230 mi apart.
Distance (LY): 6,800
Luminosity (suns): 3,000
- 20 -
Zone 135
Zone 135, Map 3
Reference Star
Zeta Tau (123 Tau; HD 37202; SAO 77336)
Position: 0538+2108
Mag : 3
Spectrum : B4 IIIep Color :
Assumed distance: 417 light years
Assumed luminosity (suns): 880
Notes:
This is a star with an unstable expanding shell and is a spectroscopic binary with a
period of 132.91 days. It is also a visual binary with a 53.2 year period, and a member of
the Cas-Tau OB1 Association. It is also an infra-red source.
Double Stars
Easy
STF 740
Rating: 3 E
ADS 4201; HD 245310; SAO 77308
Position: 0537+2111
A
B
Magnitude
9.01
9.93
Separation PA
—
—
21.8 =
121 +
Year
—
1991
Spectra
B5 III
Colors
W
O
Notes:
1830: 21.8 @ 119. 10 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical.
Observations:
C8 at 104x. Very rich field. Webb saw them as Y and W?
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.0 inches.
Separation: AB = 9.72 miles.
Distance (LY): 286
Total luminosity (Suns): 2.6
- 21 -
Zone 135
A. G. 99
Rating: 3 E
ADS 4252; HD 246033
Position: 0540+2232
A
B
Magnitude
9.62
10.17
Separation PA
—
—
7.6 143 +
Year
—
1991
Spectra
A3
Colors
W
pB
Notes:
1901: 7.7 @ 142. 4 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.11 inches.
Separation: AB = 6.04 miles.
Distance (LY): 510
Total luminosity (Suns): 4.58
OSS 66
Rating: 3 E
HD 38584; SAO 77569
Position: 0548+2441
A
B
Magnitude
6.77
7.57
Separation PA
—
—
93.4 167 +
Year
—
1997
Notes:
1874: 94.2 @ 166. 17 measurements.
The stars show similar proper motions.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 24.7 inches; B = 26.1 inches.
Separation: AB = 292 miles.
Distance (LY): 2,000
Total luminosity (Suns): 900
- 22 -
Spectra
K2
K2
Colors
O
O
Zone 135
OSS 118
Rating: 3 E
ADS 4392; HD 38670; SAO 77578
Position: 0548+2052
A
B
Magnitude
6.03
8.27
Separation PA
—
—
75.4 162 -
Year
—
1991
Spectra
B9 Vn
A0
Colors
W
L
Notes:
1843: 80.0 @ 163. 25 measurements.
Star A is a spectroscopic binary and rotates at 175 kps.
Hipparcos/Tycho data show different distances for these stars (600 and 530 light
years); they may be optical.
Observations:
C8 at 104x. Very, very rich field.
STF 755
Rating: 4 E
ADS 4239; HD 37388; SAO 77353
Position: 0539+2317
A
B
C
D
CD
Magnitude
8.90
9.63
7.48
10.02
Separation
—
6.2 +
146.5 +
PA
—
318 +
33 -
Year
—
1974
1907
79.2 +
176 +
1907
Spectra
F8
K5 Ib
Colors
W
W
Y
No
Notes:
AB 1830: 6.0 @ 316. 19 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars exhibit common proper
motion.
AC 1879: 146.0 @ 34. 2 measurements. Different proper motion. C is also a
spectroscopic binary.
CD 1879: 79.1 @ 175. 2 measurements.
Observations:
C8 at 104x. A 9m star (GSC 1861:2150) lies 5" from A at PA 320.
- 23 -
Zone 135
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 15.8 inches; C = 33.2 inches.
Separation: AB = 1.71 miles; AC = 40.5 miles; CD = 21.8 miles.
Distance (LY): 177
Total luminosity (Suns): 1.1
STF 772
A 2110 (B, D); ADS 4277; HD 37801; SAO 77423
Position: 0542+2135
A
B
C
D
CD
Magnitude
8.88
9.70
9.65
13.10
Rating: 4 E
Separation
—
0.5 +
30.6 +
PA
—
124 +
243 =
Year
—
1991
1991
1.3 -
216 +
1919
Spectra
A0
Notes:
AB 1910: 0.4 @ 116. 13 measurements.
AC 1829: 29.9 @ 243. 20 measurements.
CD 1910: 1.4 @ 212. 2 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.45 inches.
Separation: AB = 1,050 feet; AC = 12.8 miles; CD = 2,746 feet.
Distance (LY): 267
Total luminosity (Suns): 3.10
- 24 -
Colors
W
No
W
No
Zone 135
STF 777
Rating: 4 E
ADS 4295; HD 37980
Position: 0543+2213
A
B
Magnitude
9.35
9.75
Separation PA
—
—
4.8 +
85 =
Year
—
1996
Spectra
A0
Colors
W
B
Notes:
1830: 4.6 @ 85. 14 measurements. The stars have different proper motions.
Observations:
C8 at 104x. (1/1/00 UT; s2, t3) An 8m star is 12 min NNW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.62 inches.
Separation: AB = 4,277 feet.
Distance (LY): 109
Total luminosity (Suns): 0.3
Bur 93
Rating: 4 E
ADS 4403; HD 38752
Position: 0549+2101
A
B
C
D
BC
BD
Magnitude
9.02
10.19
11.10
11.30
Separation PA
—
—
60.0 =
122 =
6.0 +
9.8 +
169 +
323 -
Year
—
1959
1916
1916
Spectra
A0
G5
Colors
W
Y
No
W
Notes:
AB 1891: 60.0 @ 122. 9 measurements. The stars have a small difference in proper
motion.
BC 1891: 5.7 @ 167. 4 measurements.
BD 1891: 9.4 @ 324. 4 measurements.
- 25 -
Zone 135
Observations:
C8 at 104x. A 7m star is 8 min SSE.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.50 inches; B = 21.9 inches.
Separation: AB = 25.0 miles; BC = 2.50 miles; BD = 4.08 miles.
Distance (LY): 267
Total luminosity (Suns): 1.046
Pourteau 789
Position: 0555+2259
A
B
Magnitude
9.02
10.60
Rating: 4 E
Separation PA
—
—
8.2 265 +
Year
—
1974
Spectra
F0
Colors
W
B
Notes:
1902: 12.7 @ 251. 3 measurements.
Observations:
C8 at 104x. An 8.5m star lies 3 min E.
h373
Hough 337 (C); ADS 4510; HD 39770;
Position: 0556+2317
A
B
C
BC
Magnitude
9.50
10.26
11.46
Rating: 4 E
Separation PA
—
—
8.9 114 +
1.7 +
94 -
Year
—
1961
Spectra
A2
Colors
W
B
No
1991
Notes:
AB 1890: 9.5 @ 113. 9 measurements. May be optical because Hipparcos gives
different distances (126 and 37 light years).
BC 1890: 0.9 @ 101. 14 measurements.
Observations:
C11 at 115x.
- 26 -
Zone 135
Barton 2327
Rating: 5 E
HD 245790
Position: 0539+2002
A
B
Magnitude
9.34
10.46
Separation PA
—
—
4.6 +
24 -
Year
—
1991
Spectra
G0
Colors
W
O
Notes:
1895: 4.5 @ 25. 5 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.55 inches.
Separation: AB = 4.31 miles.
Distance (LY): 600
Total luminosity (Suns): 7.00
Bur 92
Rating: 5 E
ADS 4385; HD 247724
Position: 0548+2106
A
B
Magnitude
9.67
11.90
Separation PA
—
—
10.3 +
169 -
Notes:
1875: 9.1 @ 170. 8 measurements.
Observations:
C11 at 115x. Very rich field.
- 27 -
Year
—
1992
Spectra
Colors
W
?
Zone 135
Pourteau 779
Rating: 5 E
HD 247582
Position: 0548+2339
A
B
Magnitude
9.76
13.34
Separation PA
—
—
11.9 179 +
Year
—
1951
Spectra
K0
Colors
Notes:
1906: 12.2 @ 177. 2 measurements.
Observations:
C8 at 206x. It is a dim pair. However, a very nice little asterism of 5 stars, shaped
roughly like a "home plate" in baseball, lies a few minutes E of this pair.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.8 inches.
Separation: AB = 23.2 miles.
Distance (LY): 1,250
Total luminosity (Suns): 15.58
Moderate
STF 742
Rating: 1 M
ADS 4200; HD 37013; SAO 77313
Position: 0537+2159
A
B
Magnitude
6.88
7.32
Separation PA
—
—
4.1 +
273 +
Year
—
1999
Spectra
F8 IV?
F8 V?
Colors
O
O
Notes:
1831: 3.2 @ 248. Over 100 measurements. The orbital period may be 2,959 years
(Hopmann, 1973). The stars share common proper motion.
Observations:
C8 at 206x. Webb saw them as Y and W.
- 28 -
Zone 135
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.7 inches; B = 11.0 inches.
Separation: AB = 1.36 miles.
Distance (LY): 212
Total luminosity (Suns): 8.3
STF 742
Observed with C11
on 11/28/03
Magnification: 140x
A 2434
Rating: 4 M
ADS 4139; HD 36524; SAO 77247
Position: 0533+2002
A
B
Magnitude
8.81
10.54
Separation PA
—
—
3.8 162 +!
Notes:
1911: 3.9 @ 148. 16 measurements.
- 29 -
Year
—
1994
Spectra
G5
Colors
Y
W
Zone 135
Observations:
C11 at 115x!
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.3 inches.
Separation: AB = 4,646 feet.
Distance (LY): 150
Total luminosity (Suns): 0.633
Hussey 40
Rating: 4 M
ADS 4444; HD 248345
Position: 0552+2008
A
B
Magnitude
8.30
10.10
Separation PA
—
—
3.3 13 +
Year
—
1975
Spectra
K0
Colors
Y
W
Notes:
1900: 3.6 @ 10. 11 measurements.
Observations:
C11 at 115x. Very nice field.
Hipparcos 789
Rating: 5 M
HD 248641; SAO 77663
Position: 0553+2110
A
B
Magnitude
9.34
11.63
Separation PA
—
—
10.5 250 -
Year
—
1992
Notes:
1893: 10.7 @ 252. 4 measurements.
Observations:
C11 at 115x. B was very faint.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.50 inches.
Separation: AB = 7.98 miles.
Distance (LY): 487
Total luminosity (Suns): 3.82
- 30 -
Spectra
F8 V
Colors
W
?
Zone 135
Difficult
STF 787
Rating: 2 D
ADS 4349; HD 38363; SAO 77527
Position: 0546+2119
A
B
C
Magnitude
8.36
8.21
12.90
Separation
—
0.7 12.8 +
PA
—
61 -!
40 -
Year
—
1995
1911
Spectra
F2 IV?
Colors
W
W
?
Notes:
AB 1830: 1.4 @ 81. 58 measurements.
AC 1880: 11.0 @ 50. 2 measurements.
Observations:
C11 at 634x. This triple is part of a wonderful trapezium!
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.8 inches.
Separation: AB = 3,168 feet; AC = 11.0 miles.
Distance (LY): 550
Total luminosity (Suns): 32
Deep Sky Objects
Easy
NGC 2026
Other Names: H VIII 28
Rating: 5 E
Position: 0542+2006
Type: Oc
Cluster population: 35
Magnitude: 8.0
Notes:
Probably not a cluster.
- 31 -
Dimensions: 10' x 7'
Zone 135
Observations:
C8 at 65x. It is round and dominated at the S end by SAO 77448 (9.3m).
Moderate
NGC 1952
Other Names: Crab Nebula; 3C144, M1
Astronomical Leage Program: Messier Club
Rating: 2 M
Position: 0535+2201
Type: SNR
Dimensions: 5' x 3'
Class: E
Magnitude: 9.0
Notes:
It was discovered by J. Bevis in 1731; Messier noted it in September of 1758 and
included it in his first list of 1771. (In an interesting historical note, when Bevis saw
Messier's mention of the nebula in his 1771 list, Bevis wrote Messier a letter stating he
had seen it in 1731. Messier, a true gentleman, gave Bevis credit for this sighting in all
subsequent issues of his list!) Johannes Bode included it in his list of 1779.
Messier's own description of the leadoff item of his list goes like this: "nebula above
the southern horn of Taurus, contains no star; it is a whitish light, elongated like the flame
of a taper, discovered while observing the Comet of 1758." Pierre Mechain, Messier's
assistant, thought it was a planetary nebula.
It was named by Lord Rosse.
The cloud is expanding at 600 miles per second. It is now 7 light years in diameter.
The central pulsar rotates at 30 Hz and may be no larger than a few miles in diameter.
Based on the writings of the Chinese astronomers who recorded the supernova (July
4, 1054 AD), the precursor must have achieved the luminance of 400 million suns!
Pulsars are nothing more than rapidly-rotating neutron stars discovered by Jocelyn
Bell, a graduate assistant to Anthony Hewish at Cambridge University in 1967. Over 500
are now known. Their periods range from 1.56 milliseconds to 4 seconds and can be
measured with an accuracy of one part in 10^10. The pulse occurs when the neutron
star's magnetic axis sweeps past earth. It is thus apparent that the spin axis and magnetic
axis in a pulsar do not align.
Estimates place the total number of pulsars in the Galaxy at 100,000. They may form
at the rate of about 5 per century.
It is thought that pulsars originate in supernova explosions. The remaining core must
be above 1.4 solar masses (Chandrasekhar's Limit) to form a neutron star, but below 3
solar masses (or else it would form a black hole).
- 32 -
Zone 135
Several types of pulsars are now know to exist. These include binary pulsars,
millisecond pulsars, and the exoticly-named "black widow" pulsars.
Binary pulsars are pulsars in which the pulsar is in orbit around an ordinary star and
are detected by the strength of their X-ray signals. The X-rays arise from matter falling
onto an accretion disk around the pulsar, the matter being gravitationally siphoned off the
companion star. Slight changes in the pulsar's period indicate the presence of a
companion star (because the companion stars are rarely seen). The pulse rate is in the
millisecond range up to about one second. They are common in globular clusters, but can
also be found in the galactic disk. The first binary pulsar found was PSR 1913+16,
detected in 1974. It has a pulse rate of 59 milliseconds and a short orbital period with
very high eccentricity (e = 0.617). Its mass is 1.4 Suns and the unseen companion is
likewise 1.4 solar masses. The orbital period is slowing by 75 microseconds per year
because the stars are spiralling together. The spin rate (which gives rise then to the pulse
rate) is conversely decreasing as the system's angular momentum is conserved.
A "black widow" pulsar is a rare class of binary pulsar where the millisecond pulsar's
radiation is slowly evaporating the companion star. The first such beast found was PSR
1957+20, detected in 1988. The spin rate (hence, the pulse rate) is 0.0016 seconds and
the orbital period is only 9.2 hours. The companion star has already had about 0.02 solar
masses evaporated by the pulsar's terrible blast and the system will probably merge into a
single millisecond pulsar in 20 or 30 million more years.
The millisecond pulsar’s fast spin is not a result of their youth, but of their age! They
have been "spun up" by mass transfer in close binaries. Normal pulsars have slowing
pulses as they gradually spin slower and slower due to magnetic field "drag", but as long
as there is a supply of fresh mass, the law of conservation of angular momentum requires
the pulsar to spin faster and faster to conserve momentum.
Finally, there is at least one case of a planetary pulsar, PSR 1257+12, which is a
pulsar accompanied by at least two planets. (If life ever evolved on them— and it is not
likely that it did, since the parent star was a short-lived supergiant that went supernova
sometime recently— it probably did not survive.)
Observations:
C8 at 206x. Ghostly, with ragged edges at high power and a nebular filter. It is
longer in the NW-SE axis.
Model (where the Sun is a baseball):
Its diameter would be 1,640 miles.
Distance (LY): 3,500
Luminosity (suns): 250
- 33 -
Zone 135
NGC 1952 (M1, The Crab Nebula)
Supernova remnant
Observed with C8 on 1/30/92
Magnification: 80x
Basel 11b
Rating: 4 M
Position: 0558+2158
Type: Oc
Dimensions: 10'
Class: II 2m
Cluster population: 12
Magnitude: 8.9
Notes:
It is 14 light years in diameter. The brightest star is 11.5m (50 times brighter than the
Sun). It is about 65 million years old.
Observations:
C8 at 104x. It is a nebulous patch at low power, and a nice group of 15 stars at high
power.
Distance (LY): 5,520
Luminosity (suns): 672
- 34 -
Zone 135
Difficult
Berkeley 21
Rating: 5 D
Position: 0552+2147
Type: Oc
Dimensions: 7'
Class: II 3m
Cluster population: 40
Magnitude: 11.1
Notes:
It is 79 light years in diameter, and 2.2 billion years old.
Observations:
C8 at 104x. It is an oblong patch of rich, grainy field with 7 stars at low power, and
14 at high power.
Model (where the Sun is a baseball):
The diameter would be 10,684 miles. The stars would be, on average, 1,560 miles
apart.
Distance (LY): 16,300
Luminosity (suns): 230
- 35 -
Zone 135
Zone 135, Map 4
Red (Carbon) Star
119 Tau (CE Tau; HD 36389; SAO 94628)
Position: 0532+1836
Mag : 4.32
Assumed distance: 1,920 light years
Spectrum : M2 Ia Color : rO!!
Assumed luminosity (suns): 5,660
Observations:
C8 at 104x. By way of wonderful contrast, in the same low power field is the
intensely bW 120 Tau (5m).
Notes:
This star emits a lot of radiation in both the infrared and ultraviolet parts of the
spectrum.
Its diameter has been measured by intereferometer to be 0.0105".
Double Stars
Easy
STF 730
Rating: 2 E
ADS 4131; HD 36408; SAO 94630
Position: 0532+1703
A
B
Magnitude
5.50
5.87
Separation PA
—
—
9.6 142 =
Year
—
1998
Spectra
A2 IIIe
B7 III
Colors
W
W
Notes:
1831: 9.8 @ 142. 60 measurements. Star A is a spectroscopic binary. The stars
show a similar, but small, proper motion.
Observations:
C8 at 83x. Striking! Webb saw them as yW and bW. Moderate field.
- 36 -
Zone 135
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.70 inches; B = 1.10 inches.
Separation: AB = 16.8 miles.
Distance (LY): 1,120
Total luminosity (Suns): 650
STF 759
Position: 0539+1745
A
B
Magnitude
9.09
9.94
Rating: 3 E
Separation PA
—
—
29.5 325 +
Year
—
1991
Spectra
A0
Colors
W
W
Notes:
1830: 29.7 @ 324. 10 measurements.
There is a 13.00m companion to A at 17.8" in PA 285.
Observations:
C8 at 104x; A nice, medium-bright and moderately rich field here.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.53 inches.
Separation: AB = 2.94 miles.
Distance (LY): 64
Total luminosity (Suns): 0.11
STF 766
Rating: 3 E
ADS 4256; HD 37603; SAO 94746
Position: 0540+1521
A
B
Magnitude
6.98
8.33
Separation PA
—
—
10.2 +
275 -
Year
—
1991
Spectra
F0 II?
F0 III?
Colors
O
B
Notes:
1829: 9.6 @ 276. 24 measurements. The stars share common proper motion.
- 37 -
Zone 135
Observations:
C8 at 104x. Some observers report pY and B. Rich field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.8 inches; B = 11.8 inches.
Separation: AB = 24.5 miles.
Distance (LY): 1,540
Total luminosity (Suns): 390
STF 806
Jonckheere 677 (B); ADS 4445; HD 248358
Position: 0551+1753
A
B
C
Magnitude
10.09
10.88
9.90
Separation
—
1.7 11.1 +
PA
—
77 +
201 +
Rating: 3 E
Year
—
1991
1960
Spectra
G0
Colors
W
No
W
Notes:
AB 1912: 1.9 @ 69. 11 measurements.
AC 1830: 10.7 @ 199. 15 measurements.
Observations:
C8 at 104x; sits at the fork of a "Y" with three 8m stars.
STF 733
Rating: 4 E
ADS 4149; HD 244804; SAO 94648
Position: 0534+1601
A
B
Magnitude
9.84
10.39
Separation PA
—
—
12.2 +
40 +
Year
—
1991
Spectra
A0
Notes:
1828: 12.1 @ 38. 13 measurements. Different proper motions.
Observations:
C11 at 115x.
- 38 -
Colors
W
W
Zone 135
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.79 inches.
Separation: AB = 2,165 feet.
Distance (LY): 22
Total luminosity (Suns): 0.007
STF 771
Rating: 4 E
HD 246405
Position: 0542+1933
A
B
C
BC
Magnitude
10.27
10.35
14.30
Separation PA
—
—
22.2 55 =
100.5
210
Year
—
1991
Spectra
Colors
W
W
?
1912
Notes:
AB 1829: 26.3 @ 55. 13 measurements.
BC 1 measurement.
Observations:
C11 at 115x. C is difficult.
Distance (LY): 34
Total luminosity (Suns): 0.013
h5539
Rating: 4 E
HD 247248
Position: 0546+1737
A
B
Magnitude
10.06
10.45
Separation PA
—
—
27.3 +
282 +
Notes:
1831: 26.7 @ 281. 6 measurements.
Observations:
C11 at 115x.
- 39 -
Year
—
1991
Spectra
A0
Colors
W
W
Zone 135
Bur 1401
STF 767 rej?; HD 247616
Position: 0548+1736
A
B
Magnitude
9.75
10.68
Rating: 4 E
Separation PA
—
—
15.4 174 +
Year
—
1952
Spectra
Colors
W
W
Notes:
1903: 15.5 @ 171. 2 measurements.
Observations:
C11 at 115x. It lies 5 min S of a 5m star.
OS 126
Rating: 4 E
ADS 4571; HD 40412; SAO 95084
Position: 0559+1749
A
B
Magnitude
7.92
10.48
Separation PA
—
—
10.7 +
61 +
Year
—
1991
Spectra
F5
A0
Colors
W
W
Notes:
1843: 9.9 @ 60. 7 measurements.
Hipparcos/Tycho data show different distances for these stars (289 and 960 light
years); they may be optical.
Observations:
C8 at 104x.
OS 115
Rating: 5 E
ADS 4323; HD 38182; SAO 94816
Position: 0545+1504
A
B
C
Magnitude
7.12
8.45
11.57
Separation
—
0.4 92.9 -
PA
—
122 257 +
- 40 -
Year
—
1994
1911
Spectra
G0 III
Colors
Y
No
?
Zone 135
Notes:
AB 1843: 0.8 @ 123. 71 measurements.
AC 1850: 93.8 @ 255. 4 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.8 inches.
Separation: AB = 3,010 feet; AC = 133 miles.
Distance (LY): 920
Total luminosity (Suns): 103
Jonckheere 2394
Position: 0556+1850
A
B
C
D
CD
Magnitude
11.17
13.50
12.40
11.50
Rating: 5 E
Separation
—
15.0
20.0
PA
—
145
210
3.0
130
Year
—
1942
1942
1942
Spectra
Colors
rO
No
?
No
Notes:
All 1 measurement.
Observations:
C8 at 83x.
Moderate
STF 813
Rating: 3 M
ADS 4490;
Position: 0554+1854
A
B
Magnitude
7.95
8.05
Separation PA
—
—
3.0 149 +
Notes:
1831: 3.2 @ 148. 55 measurements.
- 41 -
Year
—
1995
Spectra
A0
Colors
pO
pB
Zone 135
Observations:
C8 at 206x.
OS 114
Heintz 322 (a); ADS 4271; HD 37772; SAO 94768
Position: 0542+1614
A
B
Magnitude
7.94
10.6
Separation PA
—
—
3.0 +
280 +
Rating: 4 M
Year
—
1987
Spectra
A0
Colors
W
W
Notes:
1843: 2.4 @ 277. 13 measurements.
Observations:
C11 at 193x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.10 inches.
Separation: AB = 1.77 miles.
Distance (LY): 379
Total luminosity (Suns): 10.7
Jonckheere 248
Rating: 5 M
ADS 4175; HD 36796; SAO 94663
Position: 0535+1838
A
B
Magnitude
8.94
9.50
Separation PA
—
—
3.8 29 -
Notes:
AB 1897: 4.0 @ 33. 7 measurements.
Observations:
C8 at 206x.
- 42 -
Year
—
1977
Spectra
A0
Colors
W
W?
Zone 135
Bur 1400
Rating: 5 M
HD 246423; SAO 94773
Position: 0542+1940
A
B
Magnitude
9.19
11.76
Separation PA
—
—
29.6 +
342 +!
Year
—
1992
Spectra
K2
Colors
Y
W
Notes:
1901: 29.2 @ 312. 2 measurements.
Observations:
C11 at 115x. Rich field.
A 2437
Rating: 5 M
ADS 4355; HD 38377; SAO 94840
Position: 0546+1852
A
B
C
Magnitude
7.60
10.73
13.10
Separation
—
4.2 +
10.6 +
PA
—
20 =
234 +
Year
—
1991
1935
Notes:
AB 1912: 3.9 @ 20. 6 measurements.
AC 1911: 9.7 @ 233. 4 measurements.
Observations:
C11 at 193x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.10 inches.
Separation: AB = 4.19 miles; AC = 10.6 miles.
Distance (LY): 640
Total luminosity (Suns): 31
- 43 -
Spectra
F2
Colors
W
O
?
Zone 135
Difficult
STF 770
Rating: 4 D
ADS 4268; HD 37740; SAO 94763
Position: 0542+1913
A
B
Magnitude
8.76
9.77
Separation PA
—
—
1.1 334 -
Year
—
1991
Notes:
1830: 1.3 @ 341. 20 measurements.
Observations:
C11 at 634x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.41 inches.
Separation: AB = 1,531 feet.
Distance (LY): 173
Total luminosity (Suns): 1.02
- 44 -
Spectra
A0
Colors
W
W
Zone 135
Zone 135 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
115 Tau
0527+1758
1E
2
STF 686
0521+2402
2E
1
STF 697
0523+1602
2E
2
h3275
0530+1825
2E
2
STF 730
0532+1703
2E
4
STF 680
0519+2008
3E
1
111 Tau
0524+1721
3E
2
STF 740
0537+2111
3E
3
STF 759
0539+1745
3E
4
STF 766
0540+1521
3E
4
A. G. 99
0540+2232
3E
3
OSS 118
0548+2052
3E
3
OSS 66
0548+2441
3E
3
STF 806
0551+1753
3E
4
h3267
0507+1650
4E
2
105 Tau
0508+2143
4E
1
h3268
0511+1630
4E
2
h3270
0513+1629
4E
2
STF 674
0517+2008
4E
1
Kustner 87
Jonckheere
144
0522+1854
4E
2
0522+2008
4E
1
h364
0524+2208
4E
1
Component
A
B
C
A
B
A
B
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
- 45 -
Mag
5.40
10.10
11.80
9.21
9.40
7.27
8.28
7.64
13.60
8.15
5.50
5.87
6.12
9.92
4.99
8.80
9.01
9.93
9.09
9.94
6.98
8.33
9.62
10.17
6.03
8.27
6.77
7.57
10.09
10.88
9.90
8.46
10.30
5.89
9.10
8.86
10.20
10.41
10.64
6.69
9.75
7.71
10.09
9.67
10.10
10.00
10.59
Separation
—
10.2 10.1 +
—
9.3 +
—
26.1 +
—
10.7 +
55.9 +
—
9.6 —
9.1 +
—
99.0 +!!
—
21.8 =
—
29.5 —
10.2 +
—
7.6 —
75.4 —
93.4 —
1.7 11.1 +
—
28.1 —
110.6 —
9.9 +
—
13.8 —
10.0 —
35.9 —
6.4 +
—
10.7 +
PA
—
305 10.1 +
—
225 +
—
286 +
—
129 +
55.9 +
—
142 =
—
203 +
—
271 =
—
121 +
—
325 +
—
275 —
143 +
—
162 —
167 +
—
77 +
11.1 +
—
153 +
—
250 —
269 +
—
331 +
—
149 +
—
104 —
174 +
—
143 =
Zone 135
Designation
Position
Rating
Map
Hipparcos 713
0526+2250
4E
1
h3273
0527+1513
4E
2
STF 733
0534+1601
4E
4
STF 755
0539+2317
4E
3
STF 771
STF 772
0542+1933
0542+2135
4E
4E
Component
A
B
A
B
A
B
A
B
C
D
CD
A
B
C
BC
A
B
C
D
CD
A
B
A
B
A
B
A
B
C
D
BC
BD
A
B
A
B
C
BC
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
4
3
STF 777
0543+2213
4E
3
h5539
0546+1737
4E
4
Bur 1401
0548+1736
4E
4
Bur 93
0549+2101
4E
3
Pourteau 789
0555+2259
4E
3
h373
0556+2317
4E
3
OS 126
0559+1749
4E
4
Pourteau 535
0505+2348
5E
1
Haupt 11
0512+1538
5E
2
h3269
Jonckheere
1818
0512+1645
5E
2
0519+1800
5E
2
Barton 2327
0539+2002
5E
3
OS 115
0545+1504
5E
4
- 46 -
Mag
10.09
10.27
9.03
9.90
9.84
10.39
8.90
9.63
7.48
10.02
10.27
10.35
14.30
8.88
9.70
9.65
13.10
9.35
9.75
10.06
10.45
9.75
10.68
9.02
10.19
11.10
11.30
9.02
10.60
9.50
10.26
11.46
7.92
10.48
7.17
11.90
9.74
11.40
8.62
10.72
9.23
10.50
9.34
10.46
7.12
8.45
11.57
Separation
—
24.1 +
—
9.7
—
12.2 +
—
6.2 +
146.5 +
PA
—
129 =
—
108
—
40 +
—
318 +
146.5 +
79.2 +
—
22.2 -
176 +
—
55 =
100.5
—
0.5 +
30.6 +
210
—
124 +
30.6 +
1.3 —
4.8 +
—
27.3 +
—
15.4 —
60.0 =
216 +
—
85 =
—
282 +
—
174 +
—
122 =
6.0 +
9.8 +
—
8.2 —
8.9 -
169 +
323 —
265 +
—
114 +
1.7 +
—
10.7 +
—
12.7
—
12.0
—
19.5 —
6.5 +
—
4.6 +
—
0.4 92.9 -
94 —
61 +
—
103
—
38
—
62 +
—
353 +
—
24 —
122 92.9 -
Zone 135
Designation
Position
Rating
Map
Bur 92
0548+2106
5E
3
Pourteau 779
0548+2339
5E
3
Jonckheere
2394
0556+1850
5E
4
STF 742
0537+2159
1M
3
STF 670
0517+1826
3M
2
STF 813
0554+1854
3M
4
103 Tau
0508+2416
4M
1
A 2434
0533+2002
4M
3
OS 114
0542+1614
4M
4
Hussey 40
Jonckheere
248
0552+2008
4M
3
0535+1838
5M
4
Bur 1400
0542+1940
5M
4
A 2437
0546+1852
5M
4
Hipparcos 789
0553+2110
5M
3
STF 787
0546+2119
2D
3
STF 694
0524+2458
3D
1
OS 95
0506+1948
4D
2
STF 665
0516+1944
4D
2
STF 770
0542+1913
4D
4
114 Tau
0528+2156
5D
1
Component
A
B
A
B
A
B
C
D
CD
A
B
A
B
A
B
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
C
A
B
C
A
B
A
B
A
B
A
B
C
D
- 47 -
Mag
9.67
11.90
9.76
13.34
11.17
13.50
12.40
11.50
6.88
7.32
7.16
7.87
7.95
8.05
5.50
12.00
8.60
8.81
10.54
7.94
10.60
8.30
10.10
8.94
9.50
9.19
11.76
7.60
10.73
13.10
9.34
11.63
8.36
8.21
12.90
7.78
7.93
15.50
6.48
7.53
9.08
9.55
8.76
9.77
4.88
10.90
11.66
12.65
Separation
—
10.3 +
—
11.9 —
15.0
20.0
PA
—
169 —
179 +
—
145
20.0
3.0
—
4.1 +
—
2.5 +
—
3.0 —
14.4 +
35.4 +
—
3.8 —
3.0 +
—
3.3 —
3.8 —
29.6 +
—
4.2 +
10.6 +
—
10.5 —
0.7 12.8 +
—
1.0 10.2 +
—
1.1 +
—
1.6 —
1.1 —
37.8 =
58.5 73.3 -
130
—
273 +
—
164 —
149 +
—
150 +
35.4 +
—
162 +!
—
280 +
—
13 +
—
29 —
342 +!
—
20 =
10.6 +
—
250 —
61 -!
12.8 +
—
8+
10.2 +
—
302 —
254 —
334 —
349 +
58.5 73.3 -
Zone 135
Deep Sky Objects
Object
119 Tau
NGC 1750
Collinder 65
NGC 1746
NGC 1758
NGC 1807
NGC 1802
NGC 2026
NGC 1952
Basel 11b
NGC 1817
Berkeley 21
Position
0532+1836
0504+2341
0526+1600
0504+2349
0505+2347
0511+1632
0510+2408
0542+2006
0535+2201
0558+2158
0512+1642
0552+2147
Rating
1E
3E
3E
4E
4E
4E
5E
5E
2M
4M
5M
5D
Map
4
1
2
1
1
2
1
3
3
3
2
3
Type
R Star
Oc
Oc (II 3p)
Oc (III 2p)
Oc (IV 1 p)
Oc (II 2p)
Oc
Oc
SNR (E)
Oc (II 2m)
Oc (IV 2r)
Oc (II 3m)
- 48 -
Specifications
Surface
Mag
Br
4.5
Population
3.0
6.1
60
7.5
20
8.0
9.0
8.9
7.7
11.1
35
12
60
40