Zone 73, Master Map
Normal View
+54°00'
Zone Master, Normal View, 10 deg FOV
+52°00'
c
e
+50°00'
Bootes
+48°00'
Hercules
f
+46°00'
d
υ
φ
16h 12m
16h 00m
15h 48m
15h 36m
15h 24m
15h 12m
15h 00m
14h 48m
Zone 73, Map 1
Normal Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Bootes
+54°00'
STF 1948
+55°00'
NGC 5908
h2779
h2771
Sh 191
Espin 740
+53°00'
NGC 5820
Draco
A 1625
+51°00'
Bemporad 18
+52°00'
Espin 741
Espin 964
Bemporad 15
OSS 137
Espin 775
+50°00'
A. G. 196
h2784
15h 36m
15h 30m
15h 24m
15h 18m
15h 12m
15h 06m
15h 00m
14h 54m
Zone 73, Map 1
Mirror Image
NGC 5908
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h2779
STF 1948
+54°00'
Bootes
h2771
Sh 191
Espin 740
h2751
+53°00'
NGC 5820
Draco
Espin 741
+52°00'
A 1625
Bemporad 18
+51°00'
STF 1889 rej
Bemporad 15
OSS 137
Espin 775
+50°00'
A. G. 196
h2784
14h 54m
15h 00m
15h 06m
15h 12m
15h 18m
15h 24m
15h 30m
15h 36m
Zone 73, Map 2
Normal Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Bemporad 14
h2781
+49°00'
h2784
+48°00'
Espin 2648
H 53
Bur 944
+47°00'
44 Boo
OS 291 rej
Lewis 13
+46°00'
STF 1920
h2770
Kustner 50
+45°00'
Roe 48
h2768
Espin 2649
h2788
h2772
15h 36m
15h 30m
15h 24m
15h 18m
15h 12m
15h 06m
15h 00m
14h 54m
Zone 73, Map 2
Mirror Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Bemporad 14
+49°00'
h2784
h2781
+48°00'
Espin 2648
Bur 944
44 Boo
+47°00'
H 53
OS 291 rej
+46°00'
STF 1920
h2770
Lewis 13
Kustner 50
h2768
OS 287
Espin 2649
h2788
h2772
14h 54m
15h 00m
15h 06m
15h 12m
15h 18m
15h 24m
15h 30m
15h 36m
+45°00'
Roe 48
Zone 73, Map 3
Normal Image
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1948
+54°00'
Milburn 135
Draco
+53°00'
Espin 742
STF 1984
A. G. 199
Espin 964
+51°00'
+52°00'
Bootes
Bemporad 21
+50°00'
Hercules
Espin 626
h2784
16h 06m
16h 00m
15h 54m
15h 48m
15h 42m
15h 36m
15h 30m
15h 24m
Zone 73, Map 3
Mirror Image
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1948
+54°00'
Milburn 135
Espin 740
+53°00'
Espin 742
Espin 741
STF 1984
A. G. 199
+52°00'
Bootes
Bemporad 21
+51°00'
Espin 964
+50°00'
Hercules
Espin 626
h2784
15h 24m
15h 30m
15h 36m
15h 42m
15h 48m
15h 54m
16h 00m
16h 06m
Zone 73, Map 4
Normal Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Espin 626
+49°00'
h2784
h2781
Bemporad 19
+48°00'
A. G. 201
Bur 944
Lewis 13
υ
Kustner 50
+46°00'
+47°00'
A. G. 202
Roe 48
+45°00'
Bur 355
h2788
16h 06m
16h 00m
15h 54m
15h 48m
15h 42m
15h 36m
15h 30m
15h 24m
Zone 73, Map 4
Mirror Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Espin 626
h2781
Bemporad 19
+48°00'
A. G. 201
+49°00'
h2784
Kustner 50
Lewis 13
+46°00'
+47°00'
Bur 944
υ
+45°00'
Roe 48
Espin 2649
h2788
15h 24m
15h 30m
15h 36m
15h 42m
15h 48m
15h 54m
16h 00m
16h 06m
Zone 73
Index
29 Double Stars
Flamsteed
h2768 ........................................................ 11
h2770 ........................................................ 10
h2771 .......................................................... 6
h2781 ........................................................ 10
h2784 ........................................................ 10
44 Boo ...................................................... 12
A
A. G. 199 ................................................. 15
B
K
Bemporad 15 ............................................. 4
Bemporad 18 ............................................. 5
Bemporad 19 ........................................... 17
Bur 944 .................................................... 13
Kustner 50 ................................................. 9
L
Lewis 13................................................... 11
E
O
Espin 2648 ................................................. 9
Espin 2649 ................................................. 8
Espin 626 ................................................. 14
Espin 740 ................................................... 4
Espin 741 ................................................... 5
Espin 742 ................................................. 15
Espin 775 ................................................... 3
Espin 964 ................................................. 16
OS 291 rej .................................................. 7
OSS 137 ..................................................... 3
R
Roe 48 ...................................................... 12
S
Sh 191 ........................................................ 2
STF 1920 ................................................... 7
STF 1948 ................................................... 2
STF 1984 ................................................. 14
H
H 53 ............................................................ 8
-1-
Zone 73
Zone 73, Map 1
Double Stars
Easy
Sh 191
ADS 9474; HD 132909; SAO 29372
Rating: 2 E
Position: 1500+5352
A
B
Magnitude
6.84
7.64
Separation PA
—
—
40.2 342 =
Year
—
1998
Spectra
F0
F2
Colors
W
B
Notes:
1823: 40.4 @ 341. 30 measurements. Common proper motion.
Observations:
C8 at 65x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.64 inches; B = 11.4 inches.
Separation: AB = 24.0 miles.
Distance (LY): 383
Total luminosity (Suns): 33
STF 1948
ADS 9649; HD 137972
Rating: 3 E
Position: 1527+5454
A
B
Magnitude
8.71
9.63
Separation PA
—
—
12.7 +
47 -
Year
—
1991
Spectra
A5
F
Colors
Y
L
Notes:
1830: 12.2 @ 51. 18 measurements. The stars show similar proper motions.
-2-
Zone 73
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.49 inches; B = 14.3 inches.
Separation: AB = 7.17 miles.
Distance (LY): 362
Total luminosity (Suns): 4
Espin 775
ADS 9556
Rating: 4 E
Position: 1515+5048
A
B
Magnitude
10.71
10.90
Separation PA
—
—
7.3 +
221 =
Year
—
1933
Spectra
Colors
W
W
Notes:
1909: 7.0 @ 221. 4 measurements.
Observations:
C11 at 115x.
Distance (LY): 154
Total luminosity (Suns): 0.178
OSS 137
HD 135944; SAO 29464
Rating: 4 E
Position: 1516+5056
A
B
Magnitude
6.47
8.88
Separation PA
—
—
67.4 102 -
Year
—
1994
Spectra
G5
Colors
W
bW
Notes:
1876: 75.8 @ 107. 22 measurements.
Hipparcos/Tycho data show different distances for these stars (197 and 407 light
years); they may be optical. The stars have different proper motions.
-3-
Zone 73
Observations:
C8 at 104x.
Espin 740
ADS 9587; HD 136511; SAO 29478
Rating: 4 E
Position: 1519+5334
A
B
Magnitude
9.72
10.70
Separation PA
—
—
3.4 38 =
Year
—
1986
Spectra
G5
Colors
Y
yW
Notes:
1909: 3.5 @ 38. 7 measurements.
Observations:
C11 at 193x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 21.4 inches.
Separation: AB = 1.23 miles.
Distance (LY): 233
Total luminosity (Suns): 0.782
Moderate
Bemporad 15
Espin 774HD 234208; SAO 29412
Rating: 5 M
Position: 1508+5056
A
B
Magnitude
10.19
11.50
Separation PA
—
—
5.3
64
Year
—
1930
Notes:
1 measurement.
Observations:
C11 at 115x.
-4-
Spectra
G0
Colors
W
W
Zone 73
Bemporad 18
Rating: 5 M
Position: 1519+5159
A
B
Magnitude
10.30
11.60
Separation PA
—
—
8.6
15
Year
—
1904
Spectra
Colors
O
B
Notes:
1 measurement.
Observations:
C11 at 115x.
Espin 741
ADS 9594; HD 136692; SAO 29485
Rating: 5 M
Position: 1520+5245
A
B
Magnitude
9.72
11.30
Separation PA
—
—
8.9 233 -
Year
—
1986
Notes:
1909: 9.0 @ 234. 4 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.5 inches.
Separation: AB = 2.15 miles.
Distance (LY): 155
Total luminosity (Suns): 0.304
-5-
Spectra
F8
Colors
W
?
Zone 73
Difficult
h2771
HD 135400; SAO 29445
Rating: 5 D
Position: 1513+5402
A
B
Magnitude
8.55
13.07
Separation PA
—
—
37.9
280
Year
—
1900
Notes:
1 measurement.
Observations:
C8 at 104x. Nice; an arc of 10m-11m stars lies to the SW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.5 inches.
Separation: AB = 29.6 miles.
Distance (LY): 500
Total luminosity (Suns): 10.11
-6-
Spectra
G0
Colors
W
?
Zone 73
Zone 73, Map 2
Double Stars
Easy
OS 291 rej
BX BooADS 9477; HD 133029; SAO 45326
Rating: 3 E
Position: 1501+4717
A
B
Magnitude
6.35
9.58
Separation PA
—
—
35.4 156 -
Year
—
1994
Spectra
B9p Si
Colors
W
bW
Notes:
1843: 36.5 @ 158. 26 measurements.
A is a Alpha CVn-type variable.
Hipparcos/Tycho data show different distances for these stars (477 and 2,510 light
years); they may be optical. However, the stars exhibit common proper motion.
Observations:
C8 at 104x.
STF 1920
SAO 45415
Rating: 3 E
Position: 1511+4651
A
B
Magnitude
9.85
9.94
Separation PA
—
—
18.7 110 =
Year
—
1991
Spectra
K0
K0
Colors
Y
Y
Notes:
1830: 19.0 @ 291. 17 measurements. Quadrant reversal apparent.
This system may be optical as the stars appear to be at different distances (382 and
441 light years) and have different proper motions.
Observations:
C11 at 115x.
-7-
Zone 73
Espin 2649
SAO 45511
Rating: 3 E
Position: 1522+4508
A
B
Magnitude
9.47
9.91
Separation PA
—
—
25.7 +
5+
Year
—
1991
Spectra
Colors
W
W
Notes:
1893: 25.1 @ 3. 8 measurements.
May be optical because Hipparcos gives different distances (193 and 3,260 light
years).
Observations:
C8 at 104x.
H 53
HD 133389; SAO 45344
Rating: 4 E
Position: 1502+4745
A
B
Magnitude
8.67
12.06
Separation PA
—
—
56.7
0
Year
—
1901
Spectra
G5
Notes:
1 measurement.
This star was measured for H VI 53, which could not be identified.
The Tycho-2 Catalogue indicates a single star entry.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.2 inches.
Separation: AB = 134 miles.
Distance (LY): 1,510
Total luminosity (Suns): 103
-8-
Colors
Y
?
Zone 73
Espin 2648
Popovic 220 (C); ADS 9539; HD 135364; SAO 45436
Rating: 4 E
Position: 1513+4835
A
B
C
Magnitude
7.16
11.14
10.89
Separation
—
26.4 0.7
PA
—
341 310
Year
—
1984
1991
Spectra
K0
Colors
yO
O
No
Notes:
AB 1898: 26.6 @ 342. 4 measurements.
AC 1 measurement.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 23.0 inches.
Separation: AB = 19.2 miles; AC = 2,929 feet.
Distance (LY): 467
Total luminosity (Suns): 23.62
Kustner 50
ADS 9646; SAO 45547
Rating: 4 E
Position: 1527+4610
A
B
Magnitude
10.30
10.50
Separation PA
—
—
3.0 +
335 -
Year
—
1999
Spectra
G0
Colors
Y
Y
Notes:
1900: 2.9 @ 340. 21 measurements.
The pair Lewis 13 formerly listed at 15280+4612 is identical (Heintz 1994).
Observations:
C11 at 193x.
-9-
Zone 73
h2770
ADS 9541
Rating: 5 E
Position: 1513+4649
A
C
Magnitude
10.90
12.70
Separation PA
—
—
18
129
Year
—
1908
Spectra
Colors
W
W
Observations:
C8 at 104x.
h2781
Rating: 5 E
Position: 1526+4913
A
B
Magnitude
10.47
12.46
Separation PA
—
—
22.4 +
324 -
Year
—
1914
Spectra
Colors
W
W
Notes:
1908: 22.3 @ 325. 2 measurements.
Observations:
C11 at 115x.
Distance (LY): 115
Total luminosity (Suns): 0.078
h2784
HD 234231; SAO 45559
Rating: 5 E
Position: 1528+4940
A
B
C
Magnitude
9.26
12.19
12.16
Separation
—
17.2 41.9 +
PA
—
234 +
10 -
- 10 -
Year
—
1987
1987
Spectra
K1 IV
Colors
W
?
?
Zone 73
Notes:
AB 1879: 17.4 @ 229. 4 measurements.
AC 1879: 41.4 @ 11. 3 measurements.
There is a 14.3m star at 31.5 @ 4 (1987).
Observations:
C11 at 115x.
Moderate
h2768
ADS B7144
Rating: 5 M
Position: 1509+4509
A
B
Magnitude
11.18
11.94
Separation PA
—
—
21.4 +
116 +
Year
—
1912
Spectra
Colors
W
W
Notes:
1908: 20.8 @ 115. 3 measurements.
Observations:
C8 at 104x.
Lewis 13
ADS 9662
Rating: 5 M
Position: 1528+4612
A
B
Magnitude
11.18
12.70
Separation PA
—
—
3.0 332 -
Notes:
1896: 11.3 @ 344. 2 measurements.
Observations:
C8 at 280x.
- 11 -
Year
—
1959
Spectra
Colors
W
?
Zone 73
Roe 48
Rating: 5 M
Position: 1530+4542
A
B
Magnitude
9.50
10.50
Separation PA
—
—
8.6
222
Year
—
1910
Spectra
Colors
W
W
Notes:
1 measurement.
Observations:
C11 at 115x. This pair looks to be about 1 magnitude fainter than listed.
Difficult
44 Boo
i Boo; STF 1909ADS 9494; HD 133640; SAO 45357
Rating: 2 D
Position: 1504+4739
A
B
Magnitude
5.28
6.12
Separation PA
—
—
2.0 +
55 +?
Year
—
1999
Spectra
G0 V
G2 V
Colors
W
W
Notes:
1819: 1.5 @ 228. Over 100 measurements. Does the 1999 measure show a quadrant
reversal?
The visual binary orbit (in which the stars average 45 AU separation) takes 225 years
(Heintz, 1978). Motion direct, semi-major axis of 3.77", highly inclined orbit. The stars
share a very large common proper motion.
The companion is an extremely close eclipsing binary (W UMa type) with a
combined mass of 2.1 Suns, composed of two dwarfs that eclipse each other in a nearly
circular orbit (implying an old orbit) that takes only 6.4 hours to complete! There
appears to be mass transfer between the two stars also.
Observations:
C8 at 280x. Webb saw them as Y, B in 1832 but as Y and V in 1850. He points out
that F. Struve and Argelander differ greatly on the colors.
- 12 -
Zone 73
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.45 inches; B = 15.6 inches.
Separation: AB = 686 feet; Bb = 2.61 inches.
Distance (LY): 42
Total luminosity (Suns): 1.51
Bur 944
ADS 9673; HD 138302; SAO 45565
Rating: 5 D
Position: 1529+4743
A
B
C
Magnitude
6.84
12.80
12.26
Separation
—
10.9 +
56.4 +
PA
—
128 68 =
Year
—
1913
1913
Notes:
AB 1879: 10.7 @ 129. 7 measurements.
AC 1911: 56.0 @ 68. 2 measurements.
Observations:
C8 at 104x. Use averted vision.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.0 inches.
Separation: AB = 7.87 miles; AC = 40.7 miles.
Distance (LY): 463
Total luminosity (Suns): 32.3
- 13 -
Spectra
A0 V
Colors
W
?
?
Zone 73
Zone 73, Map 3
Double Stars
Easy
Espin 626
ADS 9746
Rating: 3 E
Position: 1541+5009
A
B
Magnitude
10.82
10.70
Separation PA
—
—
8.1 =
275 -
Year
—
1978
Spectra
Colors
bW
bW
Notes:
1903: 8.1 @ 276. 5 measurements.
Observations:
C8 at 104x.
Distance (LY): 82
Total luminosity (Suns): 0.05
STF 1984
ADS 9816; HD 142282; SAO 29691
Rating: 3 E
Position: 1551+5254
A
B
C
Magnitude
6.74
8.97
12.80
Separation
—
6.5 =
170.8
PA
—
281 +
98
Year
—
1991
1910
Spectra
A0 V
Notes:
AB 1828: 6.5 @ 273. 42 measurements.
AC 1 measurement.
Observations:
C8 at 206x. Webb saw them as W and ?, while Franks said W and B.
- 14 -
Colors
W
R
?
Zone 73
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.00 inches.
Separation: AB = 4.30 miles; AC = 113 miles.
Distance (LY): 424
Total luminosity (Suns): 34.106
A. G. 199
ADS 9824; HD 142417
Rating: 3 E
Position: 1552+5234
A
B
Magnitude
7.86
8.94
Separation PA
—
—
9.5 =
252 -
Year
—
1991
Spectra
F2
Colors
W
W
Notes:
1900: 9.5 @ 253. 11 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.6 inches.
Separation: AB = 13.8 miles.
Distance (LY): 930
Total luminosity (Suns): 67
Espin 742
ADS 9790; HD 141508; SAO 29660
Rating: 4 E
Position: 1547+5337
A
B
Magnitude
9.98
10.35
Separation PA
—
—
3.5 +
83 =
- 15 -
Year
—
1991
Spectra
G0
Colors
W
bW
Zone 73
Notes:
1909: 3.4 @ 83. 8 measurements.
Observations:
C11 at 115x.
Espin 964
ADS 9736; HD 234250; SAO 29599
Rating: 5 E
Position: 1538+5234
A
B
Magnitude
10.42
10.70
Separation PA
—
—
5.6 216 -
Notes:
1902: 5.7 @ 217. 6 measurements.
Observations:
C11 at 115x.
- 16 -
Year
—
1934
Spectra
K2
Colors
Y
W
Zone 73
Zone 73, Map 4
Double Stars
Easy
Bemporad 19
Rating: 4 E
Position: 1545+4906
A
B
Magnitude
10.56
11.82
Separation PA
—
—
27.8
53
Year
—
1904
Notes:
1 measurement.
The Tycho-2 Catalog indicates a single star entry.
Observations:
C8 at 104x.
- 17 -
Spectra
Colors
W
B
Zone 73
Zone 73 Mini-Catalog
Designation
Position
Rating
Map
Sh 191
1500+5352
2E
1
OS 291 rej
1501+4717
3E
2
STF 1920
1511+4651
3E
2
Espin 2649
1522+4508
3E
2
STF 1948
1527+5454
3E
1
Espin 626
1541+5009
3E
3
STF 1984
1551+5254
3E
3
A. G. 199
1552+5234
3E
3
H 53
1502+4745
4E
2
Espin 2648
1513+4835
4E
2
Espin 775
1515+5048
4E
1
OSS 137
1516+5056
4E
1
Espin 740
1519+5334
4E
1
Kustner 50
1527+4610
4E
2
Bemporad 19
1545+4906
4E
4
Espin 742
1547+5337
4E
3
h2770
1513+4649
5E
2
h2781
1526+4913
5E
2
h2784
1528+4940
5E
2
Espin 964
1538+5234
5E
3
Bemporad 15
1508+5056
5M
1
h2768
1509+4509
5M
2
Bemporad 18
1519+5159
5M
1
Component
A
B
A
B
A
B
A
B
A
B
A
B
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
C
A
B
A
B
A
B
A
B
- 18 -
Mag
6.84
7.64
6.35
9.58
9.85
9.94
9.47
9.91
8.71
9.63
10.82
10.70
6.74
8.97
12.80
7.86
8.94
8.67
12.06
7.16
11.14
10.89
10.71
10.90
6.47
8.88
9.72
10.70
10.30
10.50
10.56
11.82
9.98
10.35
10.90
12.70
10.47
12.46
9.26
12.19
12.16
10.42
10.70
10.19
11.50
11.18
11.94
10.30
11.60
Separation
—
40.2 —
35.4 —
18.7 —
25.7 +
—
12.7 +
—
8.1 =
—
6.5 =
170.8
—
9.5 =
—
56.7
—
26.4 0.7
—
7.3 +
—
67.4 —
3.4 —
3.0 +
—
27.8
—
3.5 +
—
18
—
22.4 +
—
17.2 41.9 +
—
5.6 —
5.3
—
21.4 +
—
8.6
PA
—
342 =
—
156 —
110 =
—
5+
—
47 —
275 —
281 +
170.8
—
252 —
0
—
341 0.7
—
221 =
—
102 —
38 =
—
335 —
53
—
83 =
—
18
—
324 —
234 +
41.9 +
—
216 —
64
—
116 +
—
15
Zone 73
Designation
Position
Rating
Map
Espin 741
1520+5245
5M
1
Lewis 13
1528+4612
5M
2
Roe 48
1530+4542
5M
2
44 Boo
1504+4739
2D
2
h2771
1513+5402
5D
1
Bur 944
1529+4743
5D
2
Component
A
B
A
B
A
B
A
B
A
B
A
B
C
- 19 -
Mag
9.72
11.30
11.18
12.70
9.50
10.50
5.28
6.12
8.55
13.07
6.84
12.80
12.26
Separation
—
8.9 —
3.0 —
8.6
—
2.0 +
—
37.9
—
10.9 +
56.4 +
PA
—
233 —
332 —
222
—
55 +?
—
280
—
128 56.4 +