Zone 158, Master Map
σ2
σ1
θ2
γ
Orion
ρ
+16°00'
Normal View
Zone Master, Normal View, 10 deg FOV
+14°00'
π
ο1
ο2
c
+10°00'
λ
+12°00'
e
π1
π2
f
+08°00'
µ
d
+06°00'
π3
ν
π4
04h 56m
04h 48m
04h 40m
04h 32m
04h 24m
04h 16m
04h 08m
04h 00m
Zone 158, Map 1
Normal Image
+15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 495
OS 82
π
+13°00'
+14°00'
South 443
+12°00'
λ
STF 478
+11°00'
STF 535
STF 491
STF 549
04h 30m
OS 70
04h 25m
04h 20m
04h 15m
04h 10m
04h 05m
04h 00m
Zone 158, Map 1
Mirror Image
STF 495
+15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
OS 82
π
+13°00'
+14°00'
South 443
+12°00'
λ
STF 478
STF 478
+11°00'
STF 535
STF 491
STF 549
OS 70
04h 00m
04h 05m
04h 10m
04h 15m
04h 20m
04h 25m
04h 30m
Zone 158, Map 2
Normal Image
STF 549
OS 70
+10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
µ
Bur 1278
h5459
Mu Tau
+09°00'
47 Tau
NGC 1517
Paloque 47
H VI 98
ν
+06°00'
+07°00'
A 1936
+08°00'
STF 497
STF 493
45 Tau
04h 30m
04h 25m
04h 20m
04h 15m
04h 10m
04h 05m
04h 00m
Zone 158, Map 2
Mirror Image
STF 549
OS 70
Bur 1278
h5459
+09°00'
47 Tau
+10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
µ
Mu Tau
NGC 1517
Paloque 47
Paloque 47
STF 497
A 1936
+07°00'
+08°00'
A 1936
+06°00'
H VI 98
ν
STF 493
45 Tau
04h 00m
04h 05m
04h 10m
04h 15m
04h 20m
04h 25m
04h 30m
Zone 158, Map 3
Normal Image
+15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
ρ
h3262
h3260
Sh 49
Hipparcos 597
+14°00'
ο1
STF 620
Omicron 2 Ori
NGC 1663
+13°00'
ο2
STF 597 rej
Bur 883
NGC 1662
+11°00'
+12°00'
90 Tau
Bpm 68
h684
NGC 1662
STF 626 rej
88 Tau
Pi 1 Oriπ1
05h 00m
04h 55m
04h 50m
04h 45m
04h 40m
04h 35m
04h 30m
Zone 158, Map 3
Mirror Image
ρ
+15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h3262
h3260
ο1
STF 620
+14°00'
Hipparcos 597
Sh 49
Omicron 2 Oriο2
+13°00'
NGC 1663
STF 597 rej
Bpm 68
Bur 883
NGC 1662 h684 NGC 1662
88 Tau
04h 30m
04h 35m
+11°00'
+12°00'
90 Tau
π1
04h 40m
04h 45m
04h 50m
Pi 1 Ori
04h 55m
05h 00m
Zone 158, Map 4
Normal Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+10°00'
88 Tau
Pi 1 Oriπ1
+09°00'
STF 569
Bur 404
π2
OS 90
+08°00'
OS 87
Bpm 67
STF 612
NGC 1633
NGC 1633
h682
π3
Pi 3 Ori
OS 84
+06°00'
H VI 83
+07°00'
NGC 1590
π4
STF 589
STF 556 rej
OSS 55
05h 00m
04h 55m
04h 50m
04h 45m
04h 40m
04h 35m
04h 30m
Zone 158, Map 4
Mirror Image
π1
Pi 1 Ori
STF 569
Bur 404
π2
+09°00'
88 Tau
+10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
OS 90
+08°00'
OS 87
Bpm 67
+07°00'
STF 612
NGC 1633 NGC 1633
h682
π3
H VI 83
Pi 3 Ori
+06°00'
OS 84
π4
STF 556 rej
04h 30m
STF 589
04h 35m
04h 40m
04h 45m
OSS 55
04h 50m
04h 55m
05h 00m
Zone 158
1 Reference Star, 40 Double Stars,
2 Open Clusters, 1 Galaxy
Flamsteed
NGC 1663 ............................................ 20
45 Tau .................................................... 9
47 Tau .................................................. 11
88 Tau .................................................. 12
90 Tau .................................................. 14
O
A 1936 ................................................. 10
Omicron 2 Ori...................................... 18
OS 70 ..................................................... 5
OS 84 ................................................... 21
OS 87 ................................................... 23
OS 90 ................................................... 27
OSS 55 ................................................. 23
B
P
Bpm 67 ................................................ 24
Bpm 68 ................................................ 17
Bur 1278 ................................................ 9
Bur 404 ................................................ 27
Paloque 47.............................................. 8
Pi 1 Ori................................................. 15
Pi 3 Ori................................................. 25
A
S
H
Sh 49 .................................................... 12
South 443 ............................................... 3
STF 478.................................................. 3
STF 491.................................................. 5
STF 493................................................ 11
STF 497.................................................. 8
STF 535.................................................. 6
STF 549.................................................. 4
STF 556 rej .......................................... 26
STF 569................................................ 22
STF 589................................................ 26
STF 597 rej .......................................... 15
STF 612................................................ 22
STF 620................................................ 16
H VI 83 ................................................ 25
H VI 98 .................................................. 7
h3260 ................................................... 13
h3262 ................................................... 13
h5459 ................................................... 10
h682 ..................................................... 24
h684 ..................................................... 14
Hipparcos 597...................................... 17
M
Mu Tau .................................................. 7
N
NGC 1633............................................ 28
NGC 1662............................................ 19
-1-
Zone 158
Zone 158, Map 1
Double Stars
Easy
STF 478
Rating: 3 E
ADS 2919; HD 25112; SAO 93712
Position: 0400+1132
A
B
Magnitude
8.83
10.22
Separation PA
—
—
9.6 =
138 +
Year
—
1991
Spectra
F5
Colors
W
V
Notes:
1829: 9.6 @ 137. 23 measurements. The stars show similar proper motions.
Observations:
C8 at 83x. A 10m star lies 12 min SW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.7 inches.
Separation: AB = 1.24 miles.
Distance (LY): 83
Total luminosity (Suns): 0.21
South 443
Rating: 3 E
HD 25880; SAO 93764
Position: 0406+1422
A
B
C
Magnitude
8.99
9.53
7.80
Separation
—
40.6 184.9 +
PA
—
106 305 +
Year
—
1991
1908
Spectra
F5
F2
Colors
W
W
W
Notes:
AB 1825: 44.2 @ 114. 11 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. The stars have different proper motions.
AC 1825: 181.9 @ 301. 3 measurements.
-2-
Zone 158
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.8 inches; B = 12.7 inches.
Separation: AB = 6.33 miles; AC = 28.9 miles.
Distance (LY): 100
Total luminosity (Suns): 0.9
STF 549
Rating: 4 E
ADS 3233; HD 28259; SAO 111835
Position: 0428+1001
A
B
a
Magnitude
8.26
10.28
13.60
Separation
—
25.4 +
16.4
PA
—
158 354
Year
—
1991
1903
Spectra
A2
Colors
W
rO
No
Notes:
AB 1822: 23.9 @ 161. 12 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars exhibit a small common
proper motion.
Aa 1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.17 inches.
Separation: AB = 16.8 miles; Aa = 10.9 miles.
Distance (LY): 425
Total luminosity (Suns): 8
-3-
Zone 158
Moderate
OS 70
Rating: 4 M
ADS 2938; HD 25330; SAO 111566
Position: 0402+1000
A
B
a
Magnitude
5.67
11.21
8.11
Separation
—
12.0 +
0.7
PA
—
226 =
58
Year
—
1914
1991
Spectra
B5 V
Colors
bW
?
No
Notes:
AB 1848: 11.7 @ 226. 8 measurements.
Aa 1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.30 inches.
Separation: AB = 10.7 miles.
Distance (LY): 570
Total luminosity (Suns): 141
STF 491
Rating: 4 M
ADS 2981; HD 25812; SAO 93758
Position: 0406+1058
A
B
Magnitude
8.16
9.09
Separation PA
—
—
2.8 +
98 -
Notes:
1830: 2.7 @ 111. 29 measurements.
Observations:
C8 at 206x.
-4-
Year
—
1998
Spectra
F5 V?
Colors
W
O
Zone 158
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.7 inches.
Separation: AB = 1.87 miles.
Distance (LY): 427
Total luminosity (Suns): 10
Difficult
STF 535
Rating: 5 D
ADS 3174; HD 27762; SAO 93899
Position: 0423+1122
A
B
Magnitude
6.98
8.36
Separation PA
—
—
1.2 281 -
Year
—
1999
Spectra
A2 III
Colors
W
W
Notes:
1829: 2.0 @ 355. Over 100 measurements. A premature orbit has been computed.
Observations:
C8 at 697x. Elongated. Webb saw them as yW and bW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.28 inches.
Separation: AB = 2,429 feet.
Distance (LY): 247
Total luminosity (Suns): 12.7
-5-
Zone 158
Zone 158, Map 2
Reference Star
Mu Tau (49 Tau; HD 26912; SAO 111696)
Position: 0415+0853
Mag : 4.26
Assumed distance: 435 light years
Spectrum : B3 IV Color : B
Assumed luminosity (suns): 290
Notes:
This star is a spectroscopic binary and a member of the Cas-Tau OB1 Association.
Double Stars
Easy
H VI 98
V891 Tau; ADS 3085; HD 26923; SAO 111698
Position: 0416+0611
A
B
C
D
CD
Magnitude
6.32
6.94
10.20
10.20
Rating: 2 E
Separation
—
64.4 225.7 +
PA
—
316 +
48 +
Year
—
1991
1987
54.3 +
136 -
1987
Spectra
G0 IV
G5 IV
Colors
pY
pL
?
?
Notes:
AB 1875: 65.5 @ 315. 26 measurements. The stars share common proper motion.
AC 1885: 214.5 @ 47. 3 measurements.
CD 1907: 52.7 @ 139. 2 measurements.
B is a suspected variable.
Observations:
C8 at 104x.
-6-
Zone 158
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.60 inches; B = 9.00 inches.
Separation: AB = 6.93 miles; AC = 24.0 miles.
Distance (LY): 69
Total luminosity (Suns): 1.85
Paloque 47
Rating: 4 E
SAO 111557
Position: 0401+0838
A
B
Magnitude
9.83
10.16
Separation PA
—
—
39.4 +
331 -
Year
—
1991
Spectra
K2
Colors
yO
W
Notes:
1899: 38.6 @ 332. 10 measurements.
May be optical because Hipparcos gives different distances (178 and 1,210 light
years).
Observations:
C11 at 115x.
STF 497
Rating: 4 E
ADS 3018; SAO 111623
Position: 0409+0827
A
B
Magnitude
9.35
10.85
Separation PA
—
—
11.5 222 -
Year
—
1991
Spectra
F5 IV?
Colors
W
rO
Notes:
1829: 14.3 @ 236. 17 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.5 inches.
Separation: AB = 25.0 miles.
Distance (LY): 1,390
Total luminosity (Suns): 34
-7-
Zone 158
45 Tau
Engelmann 18; HD 26462; SAO 111648
Position: 0411+0531
A
B
Magnitude
5.71
10.88
Rating: 5 E
Separation PA
—
—
121.8 -! 40 -
Year
—
1955
Spectra
F4 V
Colors
W
W
Notes:
1888: 129 @ 43. 5 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.50 inches.
Separation: AB = 23.9 miles.
Distance (LY): 126
Total luminosity (Suns): 6.51
Bur 1278
Rating: 5 E
ADS 3063; HD 26677; SAO 111671
Position: 0414+0854
A
B
C
Magnitude
6.52
13.60
13.35
Separation
—
8.4 +
54.3 -
PA
—
302 255 +
Year
—
1938
1959
Spectra
A3
Colors
W
No
?
Notes:
AB 1898: 7.5 @ 303. 5 measurements.
AC 1898: 55.3 @ 252. 4 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.10 inches.
Separation: AB = 3.96 miles; AC = 25.6 miles.
Distance (LY): 302
Total luminosity (Suns): 20.08
-8-
Zone 158
Moderate
A 1936
Rating: 4 M
ADS 2923
Position: 0400+0818
A
B
Magnitude
10.11
10.48
Separation PA
—
—
4.1 27 -
Year
—
1991
Spectra
K0
K0
Colors
O
O
Notes:
1908: 4.2 @ 28. 11 measurements.
B has a 9.7m companion well beyond the resolution of amateur telescopes.
Observations:
C8 at 104x. It forms a nice triangle with two other 9.5m stars.
h5459
Rating: 5 M
SAO 111556
Position: 0401+0855
A
B
Magnitude
9.82
11.76
Separation PA
—
—
14.3 +
260 +
Year
—
1991
Spectra
K5
Colors
O
yW
Notes:
1900: 13.3 @ 259. 10 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 38.1 inches.
Separation: AB = 182 miles.
Distance (LY): 8,150
Total luminosity (Suns): 720
-9-
Zone 158
Difficult
47 Tau
Bur 547; ADS 3072; HD 26722; SAO 111674
Position: 0414+0916
A
B
C
Magnitude
4.84
7.09
13.20
Separation
—
1.2 +
29.8 -
PA
—
342 226 +
Rating: 3 D
Year
—
1999
1959
Spectra
G0 IV
Colors
W
W
?
Notes:
AB 1877: 0.9 @ 359. 44 measurements.
AC 1877: 32.2 @ 223. 6 measurements.
Observations:
C11 at 634x. I got a "snowman" on a night of marginal seeing.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.55 inches.
Separation: AB = 3,668 feet; AC = 17.3 miles.
Distance (LY): 371
Total luminosity (Suns): 140
STF 493
Rating: 5 D
ADS 2993; HD 25942
Position: 0407+0541
A
B
Magnitude
8.51
8.93
Separation PA
—
—
1.3 85 -
Year
—
1998
Spectra
F8 IV?
Colors
W
yW
Notes:
1831: 1.8 @ 98. 41 measurements.
Observations:
C11 at 634x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 1.50 miles.
Distance (LY): 740
Total luminosity (Suns): 28
- 10 -
Zone 158
Zone 158, Map 3
Double Stars
Easy
Sh 49
OSS 58; ADS 3579; HD 31764; SAO 94240
Position: 0459+1432
A
B
C
Magnitude
6.14
7.58
9.60
Separation
—
38.9 53.6 -
PA
—
305 =
89 +
Rating: 2 E
Year
—
1992
1992
Spectra
B7 V
B6 V
Colors
pY
pB
dB
Notes:
AB 1822: 39.2 @ 305. 37 measurements. Probably identical with H V 57. This pair
has common proper motion.
AC 1874: 54.7 @ 88. 27measurements. Similar proper motion.
Observations:
C8 at 104x. Others see: yW, bW, and W or pB. Webb saw them as W and B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 1.12 inches; B = 1.25 inches.
Separation: AB = 40.7 miles; AC = 56.0 miles.
Distance (LY): 670
Total luminosity (Suns): 169
88 Tau
d Tau; Sh 45; ADS 3317; HD 29140; SAO 94026
Position: 0436+1010
A
B
Magnitude
4.27
7.84
Separation PA
—
—
69.0 300 +
Rating: 4 E
Year
—
1993
Spectra
A3
Colors
Y
B
Notes:
1822: 69.7 @ 299. 20 measurements. The stars share common proper motion.
- 11 -
Zone 158
Star A is a spectroscopic binary with a 3.57124 day period. It is a member of the
Hyades group and is 2.2 times as large as the Sun. It is also an Alpha CVn type of
variable.
Observations:
C8 at 83x. Webb saw them as Y and yR or Y and pL.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.1 inches.
Separation: AB = 16.2 miles.
Distance (LY): 150
Total luminosity (Suns): 34.8
h3260
Position: 0448+1436
A
B
Magnitude
8.15
10.66
Rating: 4 E
Separation PA
—
—
15.4 +
63 +
Year
—
1989
Spectra
Colors
G0
W
Notes:
1903: 14.3 @ 61. 3 measurements.
Observations:
C8 at 104x. It forms a medium-sized triangle with two 9.5m stars.
Distance (LY): 89
Total luminosity (Suns): 0.358
h3262
Rating: 4 E
HD 286184; SAO 94205
Position: 0455+1451
A
B
C
Magnitude
9.72
10.79
12.20
Separation
—
12.7 =
30.0
PA
—
233 +
315
Notes:
AB 1905: 12.7 @ 232. 5 measurements.
AC 1 measurement.
- 12 -
Year
—
1991
1910
Spectra
A2
Colors
W
W
W
Zone 158
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.78 inches.
Separation: AB = 1.88 miles; AC = 4.44 miles.
Distance (LY): 95
Total luminosity (Suns): 0.13
90 Tau
Bpm 66; HD 29388; SAO 94044
Position: 0438+1231
A
B
C
Magnitude
4.27
13.30
10.33
Separation
—
48.1 +
120 +
Rating: 5 E
PA
—
316 310 -
Year
—
1956
1960
Spectra
A6 V
Colors
W
No
W
Notes:
AB 1910: 44.1 @ 322. 2 measurements. A is a spectroscopic binary.
AC 1910: 115 @ 312. 2 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.20 inches.
Separation: AB = 11.3 miles; AC = 28.1 miles.
Distance (LY): 150
Total luminosity (Suns): 34.6
h684
Rating: 5 E
HD 30485; SAO 94133
Position: 0448+1056
A
B
C
D
E
Magnitude
8.33
10.13
9.59
12.50
9.38
Separation
—
24.4 47.0 +
PA
—
265 +
212 =
Year
—
1987
1987
78.2 +
240 =
1987
- 13 -
Spectra
G5 III
Colors
Y
W
W
?
?
Zone 158
Notes:
AB 1901: 24.5 @ 264. 8 measurements.
AC 1901: 46.8 @ 212. 7 measurements.
CD 1910: 10.5 @ 307. 2 measurements. 1987: 10.3 - @ 308 +.
AE 1901: 77.9 @ 240. 9 measurements.
The stars show similar proper motions; however, Hipparcos shows them to all be at
different distances (5,400 light years for A, 137 for B, 69 for C, and 259 for E).
There are two more faint comes.
Observations:
C8 at 104x. It lies on the NW edge of a rich open cluster (NGC 1662).
STF 597 rej
Rating: 5 E
HD 30383; SAO 94125
Position: 0448+1307
A
B
Magnitude
8.73
11.97
Separation PA
—
—
30.0 +
279 -
Year
—
1991
Spectra
G0 IV?
Colors
W
W
Notes:
1904: 28.4 @ 287. 3 measurements. Hipparcos/Tycho data show different distances
for these stars; they may be optical.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.4 inches.
Separation: AB = 26.7 miles.
Distance (LY): 570
Total luminosity (Suns): 10.4
Pi 1 Ori
7 Ori; Engelmann 19; HD 31295; SAO 94201
Position: 0455+1009
A
B
C
Magnitude
4.63
8.94
12.70
Separation
—
171.6 =
39.7 +
PA
—
249 +
359 -
- 14 -
Rating: 5 E
Year
—
1921
1962
Spectra
A0 V
Colors
W
bW
?
Zone 158
Notes:
AB 1887: 171.6 @ 248. 5 measurements.
AC 1907: 33.1 @ 4. 2 measurements.
This star may be a member of the Hyades group and is 2.7 times larger than the Sun.
It is also a Lambda Boo type star.
Hipparcos/Tycho data show different distances for the AC stars; C is shown to be 209
light years away.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.30 inches.
Separation: AB = 32.4 miles; AC = 7.50 miles.
Distance (LY): 121
Total luminosity (Suns): 17.009
Moderate
STF 620
Rating: 4 M
ADS 3567; HD 31665; SAO 94234
Position: 0458+1357
A
B
Magnitude
8.77
9.81
Separation PA
—
—
4.2 +
237 +
Year
—
1997
Spectra
G0
Colors
W
B
Notes:
1831: 3.6 @ 226. 24 measurements.
Observations:
C8 at 206x. Moderate field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.7 inches.
Separation: AB = 3,590 feet.
Distance (LY): 104
Total luminosity (Suns): 0.4
- 15 -
Zone 158
Hipparcos 597
Rating: 5 M
HD 29298; SAO 94041
Position: 0438+1418
A
B
Magnitude
9.03
12.62
Separation PA
—
—
6.6 81 +
Year
—
1997
Spectra
G0 IV
Colors
W
?
Notes:
1991: 6.7 @ 79. 2 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.4 inches.
Separation: AB = 4.43 miles.
Distance (LY): 430
Total luminosity (Suns): 3.76
Bpm 68
Rating: 5 M
HD 30034; SAO 94095
Position: 0444+1109
A
B
C
BC
Magnitude
5.39
10.02
12.60
Separation PA
—
—
70.8 98 +
10.0 -
4+
Year
—
1992
Spectra
F0 V
1960
Notes:
AB 1910: 79.3 @ 97. 3 measurements. A may be variable.
BC 1910: 12.4 @ 359. 2 measurements.
Observations:
C11 at 115x.
- 16 -
Colors
W
?
No
Zone 158
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.70 inches.
Separation: AB = 17.3 miles.
Distance (LY): 157
Total luminosity (Suns): 13.7
Difficult
Omicron 2 Ori
9 Ori; Bur 553; ADS 3540; HD 31421; SAO 94218
Position: 0456+1331
A
B
C
Magnitude
4.05
11.30
11.64
Separation
—
36.2 +
100.4
PA
—
51 +
69
Rating: 4 D
Year
—
1962
1918
Spectra
K2 III
Colors
O
?
W
Notes:
1877: 28.6 @ 48. 6 measurements.
AC 1 measurement.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 91.4 inches.
Separation: AB = 9.50 miles; AC = 26.5 miles.
Distance (LY): 169
Total luminosity (Suns): 52.2
- 17 -
Zone 158
Deep Sky Objects
Easy
NGC 1662
Rating: 5 E
Other Names: Collinder 55; H VII 1
Astronomical League Program: Herschel II Club, Binocular Deep Sky Club
Position: 0449+1056
Type: Oc
Dimensions: 20'
Class: II 3m
Cluster population: 35
Magnitude: 6.4
Notes:
It is 8 light years in diameter and 422 million years old. There are two Ap stars, and
the earliest star types are A0. The brightest star is 8.3m (63 times brighter than the Sun).
It lies 29,000 light years from the galactic center and 440 light years south of its
central plane.
Observations:
C8 at 104x. Only five stars were resolved, in a very flattened "W" pattern that runs
NW to SE. It resembles a miniature "Lepus".
C11 at 115x. Nice bright group in a "C" shape. The S end of the C has a tight
diamond. I counted 15 stars. (Okie-Tex Star Party, 2003)
Sentinel, AZ; Steve Coe's C11 at 140x. 15 stars counted, in a 20m x 5m "C" shape.
Stars of 9m to 12m.
Model (where the Sun is a baseball):
Its diameter would be 2,430 miles, with its stars 375 miles apart.
Distance (LY): 1,300
Luminosity (suns): 360
- 18 -
Zone 158
Difficult
NGC 1663
Other Names: OCL 461; H VIII 7
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 0449+1310
Type: OC
Class: IV 2 p
Magnitude: 13.0
Surface brightness: 14.0
Dimensions: 1'
Notes:
This cluster may be 2 billion years
old !
Observations:
C11 at 98x. Very small and faint; not
resolved. A rich grainy area of about 20
very faint stars lies 10 min to the E. (OkieTex Star Party, 2003)
Distance (LY): 2,300
Total luminosity (Suns): 3
NGC 1663
Open cluster (IV 2 p)
Observed with C11 on 9/25/03
Magnification: 98x
Okie-Tex Star Party
- 19 -
Zone 158
Zone 158, Map 4
Double Stars
Easy
OS 84
Rating: 1 E
ADS 3279; HD 28630; SAO 111862
Position: 0431+0647
A
B
Magnitude
6.78
7.81
Separation PA
—
—
9.5 +
253 -
Year
—
1992
Spectra
K0 IV
Colors
O!!
W?
Notes:
1843: 9.4 @ 256. 26 measurements.
Common proper motion.
Observations:
C8 at 104x. Two stunning jewels!
Scale model (in which the Sun is the size of a
baseball):
Diameter: A = 41.0 inches.
Separation: AB = 4.00 miles.
Distance (LY): 269
Total luminosity (Suns): 13.9
OS 84
Observed with C11
on 11/20/03
Magnification: 98x
- 20 -
Zone 158
STF 569
Rating: 2 E
ADS 3327; HD 29195
Position: 0436+0912
A
B
Magnitude
8.70
9.60
Separation PA
—
—
8.1 +
133 =
Year
—
1981
Spectra
A3
Colors
Y
R
Notes:
1831: 7.9 @ 133. 20 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 = 7.71 inches.
Separation: AB = 1.63 miles.
Distance (LY): 129
Total luminosity (Suns): 0.6
STF 612
Rating: 2 E
ADS 3514; HD 31208; SAO 112196
Position: 0454+0722
A
B
C
Magnitude
8.33
8.41
13.80
Separation
—
16.2 46.7 +
PA
—
200 +
236 +
Year
—
1991
1927
Spectra
K0 V?
Colors
W
pB
No
Notes:
AB 1831: 16.6 @ 197. 53 measurements. The stars share a very large common
proper motion.
AC 1903: 44.6 @ 229. 2 measurements. Star C is optical.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 36.0 inches.
Separation: AB = 1.87 miles; AC = 5.39 miles.
Distance (LY): 74
Total luminosity (Suns): 0.45
- 21 -
Zone 158
OSS 55
Rating: 3 E
SAO 112101
Position: 0449+0512
A
B
Magnitude
8.09
9.14
Separation PA
—
—
37.4 17 +
Year
—
1997
Spectra
K
F
Colors
O
bW
Notes:
1875: 37.7 @ 16. 18 measurements.
The stars share common proper motion. However, Hipparcos shows different
distances (700 and 1,040 light years).
Observations:
C8 at 104x. Some observers report colors of R and B (Webb, et al).
OS 87
Rating: 4 E
ADS 3326; HD 29196
Position: 0436+0813
A
B
Magnitude
7.63
9.20
Separation PA
—
—
6.0 +
234 -
Year
—
1999
Spectra
A0 V
Colors
yW
B
Notes:
1845: 4.6 @ 239. 27 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.50 inches.
Separation: AB = 4.80 miles.
Distance (LY): 510
Total luminosity (Suns): 23
- 22 -
Zone 158
h682
A 1941 (C); ADS 3424; SAO 112048
Position: 0446+0708
A
B
C
Magnitude
9.97
10.38
14.00
Separation
—
25.5 +
4.3 =
Rating: 4 E
PA
—
151 +
8-
Year
—
1991
1917
Spectra
K0
Colors
yO
W
No
Notes:
AB 1897: 23.3 @ 149. 18 measurements.
AC 1909: 4.3 @ 10. 2 measurements.
AB may be optical as Tycho shows different distances (362 and 65 light years). They
also have different proper motions.
Observations:
C11 at 115x.
Bpm 67
Rating: 5 E
HD 29499; SAO 111954
Position: 0439+0752
A
B
C
Magnitude
5.39
10.80
9.23
Separation
—
76.8 +
296.4 -
PA
—
252.4 +
314.3 -
Year
—
1954
1954
Spectra
A5m
Colors
W
W
W
Notes:
AB 1884: 69.2 @ 247. 5 measurements.
AC 1884: 299.4 @ 317. 3 measurements.
C may be optical as Tycho shows different distances for A and C (168 and 204 light
years). The stars also have very different proper motions.
Observations:
C11 at 115x.
- 23 -
Zone 158
H VI 83
Position: 0450+0657
A
B
Magnitude
7.20
8.70
Rating: 5 E
Separation PA
—
—
95.4 5+
Year
—
1981
Spectra
A2
Colors
W
W
Notes:
1897: 96.2 @ 4. 10 measurements.
The stars share a small common proper motion.
Observations:
C8 at 104x. It is overpowered by a 4m Y star 10 min to the W.
Pi 3 Ori
1 Ori; OS 560; HD 30652; SAO 112106
Position: 0450+0657
A
B
Magnitude
3.19
11.31
Rating: 5 E
Separation PA
—
—
74.7 -!! 163 +!
Year
—
1993
Spectra
F6 V
Colors
W
?
Notes:
1852: 112.4 @ 128. 9 measurements.
The primary may be a Delta Sct type of varialbe; it is certainly a spectroscopic binary.
It is also an infra-red source.
Optical pair.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.30 inches.
Separation: AB = 3.03 miles.
Distance (LY): 26
Total luminosity (Suns): 2.878
- 24 -
Zone 158
Moderate
STF 589
Rating: 2 M
ADS 3417; HD 30101; SAO 112034
Position: 0445+0517
A
B
Magnitude
8.09
8.23
Separation PA
—
—
4.5 =
280 -
Year
—
1997
Spectra
G5 V?
G5 V?
Colors
B
O
Notes:
1831: 4.5 @ 311. Over 100 measurements. The stars share a large common proper
motion.
Observations:
C8 at 104x. Webb saw them as yW and ?. "Beautiful!" he wrote. Amateur reports
include (W, ?), (pO, pO), (bW, W).
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 15.8 inches; B = 15.9 inches.
Separation: AB = 5,174 feet.
Distance (LY): 139
Total luminosity (Suns): 1.3
STF 556 rej
Opik 4 (C); ADS 3266;
Position: 0430+0518
Rating: 5 M
A
B
C
Magnitude
9.83
10.58
10.83
Separation
—
4.4 =
75.0 -
PA
—
289 =
160 +
Notes:
AB 1895: 4.4 @ 289. 17 measurements.
AC 1918: 80.1 @ 156. 2 measurement.
Observations:
C11 at 115x.
- 25 -
Year
—
1991
1926
Spectra
F8
Colors
W
W
?
Zone 158
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.6 inches.
Separation: AB = 1,214 feet; AC = 3.97 miles..
Distance (LY): 34
Total luminosity (Suns): 0.02
OS 90
Rating: 5 M
ADS 3517; SAO 112205
Position: 0455+0836
A
B
C
D
CD
Magnitude
6.86
9.11
14.17
12.70
Separation
—
1.8 38.1
11.8
PA
—
340 95
Year
—
1994
1909
1909
Spectra
A0 IV
Colors
W
B
?
?
320
Notes:
AB 1845: 2.0 @ 347. 33 measurements.
AC and CD, 1 measurement.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.6 inches.
Separation: AB = 1.50 miles; AC = 31.5 miles; CD = 9.76 miles.
Distance (LY): 530
Total luminosity (Suns): 46.562
Bur 404
Rating: 5 M
ADS 3541; HD 31422; SAO 112222
Position: 0456+0908
A
B
Magnitude
9.64
9.72
Separation PA
—
—
1.7 =
239 +?
Year
—
1991
Spectra
Notes:
1877: 1.7 @ 112. 19 measurements. Is there a quadrant reversal?
- 26 -
Colors
W
W
Zone 158
Observations:
C11 at 339x.
Distance (LY): 60
Total luminosity (Suns): 0.08
Deep Sky Objects
Difficult
NGC 1633
Other Names: UGC 3125; H III 952
Rating: 5 D
Position: 0440+0721
Type: Gal
Surface brightness: 13.1
Class: SAB(s)ab
Dimensions: 60" x 54"
Magnitude: 13.5
Observations:
C11 at 193x. It was a faint round patch, with only a very slightly brighter middle. A
triangle of bright stars is 3 min W. It was steadily held with averted vision.
Radial velocity (km/sec): +4,989
- 27 -
Zone 158
Zone 158 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
OS 84
0431+0647
1E
4
H VI 98
0416+0611
2E
2
STF 569
0436+0912
2E
4
STF 612
0454+0722
2E
4
Sh 49
0459+1432
2E
3
STF 478
0400+1132
3E
1
South 443
0406+1422
3E
1
OSS 55
0449+0512
3E
4
Paloque 47
0401+0838
4E
2
STF 497
0409+0827
4E
2
STF 549
0428+1001
4E
1
OS 87
0436+0813
4E
4
88 Tau
0436+1010
4E
3
h682
0446+0708
4E
4
h3260
0448+1436
4E
3
h3262
0455+1451
4E
3
45 Tau
0411+0531
5E
2
Bur 1278
0414+0854
5E
2
90 Tau
0438+1231
5E
3
Component
A
B
A
B
C
D
CD
A
B
A
B
C
A
B
C
A
B
A
B
C
A
B
A
B
A
B
A
B
a
A
B
A
B
A
B
C
A
B
A
B
C
A
B
A
B
C
A
B
C
- 28 -
Mag
6.78
7.81
6.32
6.94
10.20
10.20
8.70
9.60
8.33
8.41
13.80
6.14
7.58
9.60
8.83
10.22
8.99
9.53
7.80
8.09
9.14
9.83
10.16
9.35
10.85
8.26
10.28
13.60
7.63
9.20
4.27
7.84
9.97
10.38
14.00
8.15
10.66
9.72
10.79
12.20
5.71
10.88
6.52
13.60
13.35
4.27
13.30
10.33
Separation
—
9.5 +
—
64.4 225.7 +
PA
—
253 —
316 +
225.7 +
54.3 +
—
8.1 +
—
16.2 46.7 +
—
38.9 53.6 —
9.6 =
—
40.6 184.9 +
—
37.4 —
39.4 +
—
11.5 —
25.4 +
16.4
—
6.0 +
—
69.0 —
25.5 +
4.3 =
—
15.4 +
—
12.7 =
30.0
—
121.8 -!
—
8.4 +
54.3 —
48.1 +
120 +
136 —
133 =
—
200 +
46.7 +
—
305 =
53.6 —
138 +
—
106 184.9 +
—
17 +
—
331 —
222 —
158 354
—
234 —
300 +
—
151 +
4.3 =
—
63 +
—
233 +
30.0
—
40 —
302 54.3 —
316 120 +
Zone 158
Designation
Position
Rating
Map
Bpm 67
0439+0752
5E
4
h684
0448+1056
5E
3
STF 597 rej
0448+1307
5E
3
H VI 83
0450+0657
5E
4
Pi 3 Ori
0450+0657
5E
4
Pi 1 Ori
0455+1009
5E
3
STF 589
0445+0517
2M
4
A 1936
0400+0818
4M
2
OS 70
0402+1000
4M
1
STF 491
0406+1058
4M
1
STF 620
0458+1357
4M
3
h5459
0401+0855
5M
2
STF 556 rej
0430+0518
5M
4
Hipparcos 597
0438+1418
5M
3
Bpm 68
0444+1109
5M
3
OS 90
0455+0836
5M
Component
A
B
C
A
B
C
D
E
A
B
A
B
A
B
A
B
C
A
B
A
B
A
B
a
A
B
A
B
A
B
A
B
C
A
B
A
B
C
BC
A
B
C
D
CD
A
B
A
B
C
A
B
C
A
B
4
Bur 404
0456+0908
5M
4
47 Tau
0414+0916
3D
2
Omicron 2 Ori
0456+1331
4D
3
STF 493
0407+0541
5D
2
- 29 -
Mag
5.39
10.80
9.23
8.33
10.13
9.59
12.50
9.38
8.73
11.97
7.20
8.70
3.19
11.31
4.63
8.94
12.70
8.09
8.23
10.11
10.48
5.67
11.21
8.11
8.16
9.09
8.77
9.81
9.82
11.76
9.83
10.58
10.83
9.03
12.62
5.39
10.02
12.60
6.86
9.11
14.17
12.70
9.64
9.72
4.84
7.09
13.20
4.05
11.30
11.64
8.51
8.93
Separation
—
76.8 +
296.4 —
24.4 47.0 +
78.2 +
PA
—
252.4 +
296.4 —
265 +
47.0 +
240 =
—
30.0 +
—
95.4 —
74.7 -!!
—
171.6 =
39.7 +
—
4.5 =
—
4.1 —
12.0 +
0.7
—
2.8 +
—
4.2 +
—
14.3 +
—
4.4 =
75.0 —
6.6 —
70.8 -
—
279 —
5+
—
163 +!
—
249 +
39.7 +
—
280 —
27 —
226 =
58
—
98 —
237 +
—
260 +
—
289 =
75.0 —
81 +
—
98 +
10.0 —
1.8 38.1
4+
—
340 38.1
11.8
—
1.7 =
—
1.2 +
29.8 —
36.2 +
100.4
—
1.3 -
320
—
239 +?
—
342 29.8 —
51 +
100.4
—
85 -
Zone 158
Designation
STF 535
Position
0423+1122
Rating
5D
Map
Component
1
A
B
Mag
6.98
8.36
Separation
—
1.2 -
PA
—
281 -
Deep Space
Object
NGC 1662
NGC 1633
NGC 1663
Position
0449+1056
0440+0721
0449+1310
Rating
5E
5D
5D
Map
3
4
3
Type
Oc (II 3m)
Gal (SAB(s)ab)
Oc (IV 2 p)
- 30 -
Specifications
Surface
Mag
Br
6.4
13.5
13.1
13.0
14.0
Population
35