Zone 72, Master Map
Normal View
Zone Master, Normal View, 10 deg FOV
Draco
+54°00'
Bootes
M101
ι
κ1
κ2
+50°00'
θ
+52°00'
c
e
Alkaid
+48°00'
η
Ursa Major
f
Canes Venatici
+46°00'
d
λ
15h 12m
15h 00m
14h 48m
14h 36m
14h 24m
14h 12m
14h 00m
13h 48m
Zone 72, Map 1
Normal Image
STF 1860
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1820
Ursa Major
NGC 5486
NGC 5485
h2717
NGC 5473
Bootes
h2725
+54°00'
NGC 5687
NGC 5457 M101
h2712
h2694
STF 1839
+53°00'
NGC 5474
STF 1795
+52°00'
A 1623
Theta Boo
Espin 19
ι
κ2 Kappa Boo
κ1
+51°00'
θ
STF 1863
Iota Boo
STF 1829
NGC 5520
14h 36m
NGC 5660
NGC 5676
14h 30m
14h 24m
+50°00'
NGC 5480
NGC 5481
STF 1814
Bemporad 8
14h 18m
14h 12m
14h 06m
14h 00m
13h 54m
Zone 72, Map 1
Mirror Image
STF 1820
NGC 5486
NGC 5485
NGC 5473
Ursa Major
STF 1860
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h2717
Bootes
h2725
NGC 5687
M101
+54°00'
NGC 5457
h2712
STF 1839
h2694
+53°00'
NGC 5474
+52°00'
STF 1795
κ2
κ1
Kappa Boo
θ
Theta Boo
Espin 19
+51°00'
Iota Booι
NGC 5480
NGC 5481
+50°00'
NGC 5520
STF 1829
STF 1814
Bemporad 8
13h 54m
14h 00m
14h 06m
14h 12m
14h 18m
14h 24m
NGC 5660
NGC 5676
14h 36m
14h 30m
Zone 72, Map 2
Normal Image
NGC 5520
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1814
Bemporad 8
NGC 5660
NGC 5676
OS 283
+49°00'
H VI 112
13 Boo
NGC 5448
LDS 5800
NGC 5689
h2710
STF 1806
STF 1834
+48°00'
Bur 615
Ursa Major
Espin 609
STF 1843
NGC 5377
STF 1826
Espin 1085
λ
STF 1815
h2732
14h 36m
14h 30m
Lambda Boo
+45°00'
NGC 5633
+46°00'
h2697
Swift 1
h2716
14h 24m
14h 18m
14h 12m
+47°00'
Canes Venatici
14h 06m
14h 00m
13h 54m
Zone 72, Map 2
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+50°00'
STF 1829
Bemporad 8
NGC 5660
NGC 5676
H VI 112
13 Boo
+49°00'
NGC 5520
STF 1814
OS 283
NGC 5448
LDS 5800
h2710
Bur 615
STF 1834
+48°00'
STF 1806
Ursa Major
STF 1843
+47°00'
Canes Venatici
NGC 5377
STF 1826
Espin 1085
λ
NGC 5633
Lambda Boo
STF 1815
13h 54m
14h 00m
14h 06m
14h 12m
14h 18m
+46°00'
h2716
h2732
14h 24m
14h 30m
14h 36m
+45°00'
h2697
Swift 1
Zone 72, Map 3
Normal Image
STF 1860
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Ursa Major
h2717
h2725
h2712
+54°00'
NGC 5687
Sh 191
NGC 5820
+53°00'
h2751
A 1625
θ
Theta Boo
+52°00'
A 1623
STF 1863
STF 1871
+51°00'
STF 1889 rej
Bemporad 15
+50°00'
A. G. 196
NGC 5660
15h 06m
15h 00m
14h 54m
14h 48m
14h 42m
14h 36m
14h 30m
14h 24m
Zone 72, Map 3
Mirror Image
Ursa Major
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1860
h2717
NGC 5687
+54°00'
h2725
h2712
STF 1839
Sh 191
+53°00'
NGC 5820
h2751
+52°00'
A 1623
A 1625
Espin 19
θ
Theta Boo
STF 1863
STF 1871
+51°00'
STF 1889 rej
+50°00'
A. G. 196
NGC 5660
14h 24m
14h 30m
14h 36m
14h 42m
14h 48m
14h 54m
15h 00m
15h 06m
Zone 72, Map 4
Normal Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Bemporad 14
OS 283
STF 1874
OS 284
NGC 5689
STF 1843
H 53
Espin 962
44 Boo
Espin 609
Hipparcos 2093
+45°00'
NGC 5633
h2732
OS 287
15h 00m
14h 54m
h2752
14h 48m
14h 42m
14h 36m
14h 30m
+46°00'
+47°00'
OS 291 rej
15h 06m
+48°00'
39 Boo
+49°00'
NGC 5660
NGC 5676
14h 24m
Zone 72, Map 4
Mirror Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Bemporad 14
OS 283
STF 1874
NGC 5689 OS 284
39 Boo
+48°00'
Bur 615
+49°00'
NGC 5660
NGC 5676
STF 1843
Espin 609
H 53
Espin 962
44 Boo
+47°00'
OS 291 rej
+46°00'
h2716
+45°00'
NGC 5633
Hipparcos 2093
h2732
OS 287
14h 24m
14h 30m
14h 36m
14h 42m
14h 48m
h2752
14h 54m
15h 00m
15h 06m
Zone 72
Index
1 Reference Star, 39 Double Stars, 13 Galaxies
Flamsteed
I
39 Boo.................................................. 28
Iota Boo.................................................. 4
A
K
A 1623 ................................................. 21
A 1625 ................................................. 24
A. G. 196 ............................................. 23
Kappa Boo ............................................. 3
L
Lambda Boo......................................... 12
B
N
Bemporad 14........................................ 31
Bemporad 8.......................................... 15
Bur 615 ................................................ 18
NGC 5448 ............................................ 19
NGC 5457 .............................................. 8
NGC 5473 .............................................. 9
NGC 5474 .............................................. 9
NGC 5480 ............................................ 10
NGC 5481 ............................................ 10
NGC 5520 ............................................ 11
NGC 5633 ............................................ 20
NGC 5687 ............................................ 25
NGC 5820 ............................................ 25
E
Espin 1085 ........................................... 18
Espin 19 ................................................. 5
Espin 609 ............................................. 27
Espin 962 ............................................. 26
H
H VI 112 .............................................. 14
h2697 ................................................... 17
h2710 ................................................... 13
h2712 ..................................................... 6
h2716 ................................................... 14
h2717 ..................................................... 7
h2725 ..................................................... 7
h2732 ................................................... 27
h2751 ................................................... 23
Hipparcos 2093.................................... 30
O
OS 283 ................................................. 29
OS 284 ................................................. 30
S
STF 1806.............................................. 15
STF 1814................................................ 3
STF 1815.............................................. 16
STF 1826.............................................. 17
STF 1829................................................ 4
STF 1834.............................................. 12
-1-
Zone 72
STF 1839 ............................................... 5
STF 1843 ............................................. 16
STF 1863 ............................................. 21
STF 1871 ............................................. 24
STF 1874 ............................................. 26
STF 1889 rej ........................................ 22
Swift 1.................................................. 13
T
Theta Boo............................................... 6
-2-
Zone 72
Zone 72, Map 1
Double Stars
Easy
Kappa Boo
Rating: 1 E
17 Boo; Asellus Tertius; STF 1821; ADS 9173; HD 124675; SAO 29046
Astronomical League Program: Double Star Club
Position: 1414+5147
A
B
Magnitude
4.53
6.62
Separation PA
—
—
14.0 +
237 +
Year
—
1998
Spectra
A8 IV
F2 V
Colors
D
O
Notes:
1822: 12.5 @ 234. 95 measurements.
Star A is a spectroscopic binary and a Delta Scuti star. Star B is a spectroscopic
binary.
This star is a member of the Sirius Group.
Hipparcos/Tycho mission data show different distances for these stars (155 and 195
light years); they may be optical.
Observations:
C8 at 104x. Some observers report W and W, or W and B.
STF 1814
ADS 9147; HD 124257; SAO 29032
Rating: 3 E
Position: 1411+5015
A
B
Magnitude
9.25
9.83
Separation PA
—
—
11.2 +
256 =
Notes:
1831: 11.0 @ 256. 21 measurements.
The stars share a large common proper motion.
-3-
Year
—
1991
Spectra
G5
Colors
yO
bW
Zone 72
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.8 inches.
Separation: AB = 28.7 miles.
Distance (LY): 1,640
Total luminosity (Suns): 73
STF 1829
ADS 9187; HD 125020; SAO 29061
Rating: 3 E
Position: 1415+5026
A
B
Magnitude
7.62
8.26
Separation PA
—
—
5.6 +
151 +
Year
—
1991
Spectra
F5
Colors
W
W?
Notes:
1831: 5.4 @ 150. 31 measurements.
Observations:
C8 at 83x. It forms the W vertex of a triangle with 8.1m and 7.8m stars.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.7 inches.
Separation: AB = 4.06 miles.
Distance (LY): 465
Total luminosity (Suns): 23
Iota Boo
21 Boo; SI 26; ADS 9198; HD 125161; SAO 29071
Astronomical League Program: Double Star Club
Rating: 3 E
Position: 1416+5122
A
B
C
Magnitude
4.75
8.34
13.61
Separation
—
38.9 +
86.7 +
PA
—
33 =
194 -4-
Year
—
1998
1925
Spectra
A9 V
K0 V
Colors
W
W
?
Zone 72
Notes:
AB 1820: 38.5 @ 33. 57 measurements.
Hipparcos/Tycho mission data show different distances for these stars (34 and 70 light
years); they may be optical. However, the stars exhibit common proper motion.
AC 1911: 85.7 @ 197. 2 measurements.
Star A is a spectroscopic binary and is a Delta Scuti variable.
Observations:
C8 at 104x. Webb saw the primary as yW; Dembowski saw it as V.
Espin 19
ADS 9230; HD 234127
Rating: 3 E
Position: 1420+5141
A
B
C
Magnitude
10.09
11.77
9.72
Separation
—
1.7 =
41.5 +
PA
—
47 =
170 =
Year
—
1991
1983
Spectra
G
Colors
W
No
W
Notes:
AB 1902: 1.7 @ 47. 10 measurements.
AC 1902: 40.8 @ 170. 8 measurements.
Observations:
C8 at 104x.
STF 1839
ADS 9234; HD 126049; SAO 29115
Rating: 3 E
Position: 1421+5354
A
B
Magnitude
8.76
8.85
Separation PA
—
—
14.5 +
81 -
Year
—
1991
Spectra
G0
Colors
W
W
Notes:
1831: 14.4 @ 82. 30 measurements. The stars show a similar, but small, proper
motion.
-5-
Zone 72
Observations:
C8 at 104x. It forms a flat triangle with two 10m stars.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.7 inches.
Separation: AB = 10.3 miles.
Distance (LY): 457
Total luminosity (Suns): 9
h2712
Rating: 5 E
Position: 1420+5402
A
B
Magnitude
13.36
14.00
Separation PA
—
—
28.5
299
Year
—
1911
Spectra
Colors
bW
W
Notes:
1 measurement.
Observations:
C11 at 115x.
Theta Boo
23 Boo; Asellus Primus; OS 580; HD 126660; SAO 29137
Rating: 5 E
Position: 1425+5151
A
B
Magnitude
4.05
11.10
Separation PA
—
—
69.5 +
182 =
Year
—
1971
Spectra
F7 V
Colors
W
?
Notes:
1854: 69.1 @ 182. 16 measurements. This star is a member of the Wolf 630 group.
The primary is an infra-red source and Delta Scuti variable.
Observations:
C8 at 104x. You'll need averted vision to glimpse B.
-6-
Zone 72
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.90 inches.
Separation: AB = 5.20 miles.
Distance (LY): 48
Total luminosity (Suns): 4.56
h2725
A 1620 (B); ADS 9281; HD 127318; SAO 29166
Rating: 5 E
Position: 1429+5430
A
B
C
Magnitude
9.31
12.30
11.97
Separation
—
0.9 25.4 +
PA
—
223 135 -
Year
—
1993
1962
Spectra
K0
Colors
Y
No
?
Notes:
AB 1907: 1.1 @ 225. 9 measurements.
AC 1900: 22.9 @ 138. 5 measurements.
Observations:
C11 at 115x. B was not detected at any magnification.
Moderate
h2717
Rating: 5 M
Position: 1422+5452
A
B
Magnitude
10.70
11.20
Separation PA
—
—
9.6 +
290 -
Notes:
1908: 9.2 @ 294. 2 measurements.
Observations:
C11 at 115x.
-7-
Year
—
1917
Spectra
Colors
W?
?
Zone 72
Deep Sky Objects
Difficult
NGC 5457
Other Names: Pinwheel Galaxy, M101
Astronomical Leage Program: Messier Club
Rating: 5 D
Position: 1403+5421
Type : Gal
Surface brightness: 14.8
Class: Sc
Dimensions: 22' x 20'
Magnitude : 9.0
Notes:
It has a mass of 16 billion suns, making it one of the least dense galaxies known. It is
90,000 light years in diameter.
M101 was discovered by Pierre Méchain on March 27, 1781, and added as one of the
last entries in Charles Messier's catalog. It was the first "spiral nebula" identified as such
by William Parsons, the third Earl of Rosse.
Although extended 22 arc minutes on photos and quite bright, only the central region
of this galaxy is visible in smaller telescopes, best at low powers. Suggestions of the
spiral arms can be glimpsed in telescopes starting from 4 inch as nebulous patches.
Several of these patches (i.e., spiral arm fragments) were assigned their own catalog
numbers by William Herschel and later observers; according to the NGC and Burnham,
there are 9 such numbers, 3 of which go back to Herschel who has found them on April
14, 1789, while the RNGC states that five of the others don't exist (ne); it mentions
however that deVaucouleurs has them as knots: NGC 5447 (H III 787), 5449 (ne), 5450
(ne), 5451 (ne), 5453 (ne), 5455, 5458 (ne), 5461 (H III 788), 5462 (H III 789), and 5471.
M101 is the brightest of a group of at least 9 galaxies, the brightest companions being
NGC 5474 (type Sc, 10.85 mag vis) to the SSE and NGC 5585 (Sa, 11.49 mag; Glyn
Jones and Robert Burnham misprinted this as 5485) to the NE. Other probable group
members are NGC 5204 (Ir, 11.26), NGC 5238 (SB(d)m, 13.35p), NGC 5477 (Ir+, 13.8),
UGC 8508 (Ir+, 14.5 p), UGC 8837 (Ir+, 13.1 p), and UGC 9405.
It has a linear diameter of over 170,000 light years and is thus among the biggest disk
galaxies, and its total apparent visual brightness of 7.9 mag corresponds to an absolute
brightness of -21.6 magnitudes, or a luminosity of about 30 billion times that of our sun.
Three supernovae have been discovered in M101: The first one, SN 1909A, appeared
on Jan 26, 1909 and was discovered by Max Wolf; it was of peculiar type and reached
mag 12.1 (Glyn Jones reports that the discovery took place in February, and the SN
reached only mag 13.5). The second supernova 1951H was of type II, occurred in
-8-
Zone 72
September 1951 and reached mag 17.5, while the third, SN 1970G, also type II, occurred
on Jul 30, 1970 and reached mag 11.5.
[Source: http://www.seds.org/messier/m/m101.html]
Observations:
C8 at 65x. Large, but dim. The halo is knotty (note the H-II region NGC 5642, about
8 min E of the center). A 13m star is 2 min N of the nucleus.
Distance (LY): 27,000,000
Radial velocity (km/sec): +394
Luminosity (suns): 14,400,000,000
NGC 5474
Other Names: UGC 9013, H I 214
Astronomical League Program: Herschel 400 Club
Rating: 5 D
Position: 1405+5340
Type : Gal
Surface brightness: 14.3
Class: Sc
Dimensions: 4' x 3'
Magnitude : 11.5
Notes:
This is a Seyfert galaxy.
Observations:
C8 at 104x. Faint and featureless, wtih no obvious nucleus. 7.1m star (SAO 29009)
lies 25 min SE. A 10m star lies 15 min N (bad news!), and a 12.5m star lies 4 min NW.
Model (where the Sun is a baseball):
Its diameter would be 8.6 million miles.
Distance (LY): 23,000,000
Radial velocity (km/sec): +394
Luminosity (suns): 1,100,000,000
NGC 5473
Other Names: UGC 9011, H I 231
Astronomical League Program: Herschel 400 Club
Rating: 5 D
Position: 1405+5454
Type : Gal
Class: SAB(s)0-:
-9-
Magnitude : 12.6
Zone 72
Surface brightness: 12.7
Dimensions: 1'
PA: 160
Observations:
C8 at 104x. Faint and small, averted vision helps. The nucleus is stellar. A 10m star
lies 15 min N.
Distance: 94,000,000 light years
Radial velocity (km/sec): +2,127
Luminosity: 6,400,000,000 Suns
NGC 5480
Other Names: UGC 9026, H II 692
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1406+5043
Type : Gal
Surface brightness: 12.3
Class: Sc
Dimensions: 1.3' x 0.9'
Magnitude : 12.6
PA: 0
Notes:
This galaxy produced supernova 1988L (type Ib).
Observations:
C8 at 104x. Extremely faint N-S smudge in a bleak field.
Model (where the Sun is a baseball):
Its diameter would be 16.7 million miles.
Distance (LY): 137,000,000
Radial velocity (km/sec): +1,856
Luminosity (suns): 13,400,000,000
NGC 5481
Other Names: UGC 9029, H II 693
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1407+5043
Type : Gal
Surface brightness: 13.0
Class: E+
Dimensions: 1.8' x 1.3'
- 10 -
Magnitude : 12.2
Zone 72
Observations:
C11 at 140x. It is faint and round, and slowly brightens to the center. Three faint
field stars lie to the E/SE.
Radial velocity (km/sec): +2,064
NGC 5520
Other Names: UGC 9097, H III 676
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1412+5022
Type : Gal
Surface brightness: 12.8
Class: SB II-III
Dimensions: 1.6' x 1.0'
Magnitude : 12.4
Observations:
C11 at 140x. Very faint and
indistinct, with a very slow
brightening towards the center.
I noted three very faint field
stars; this galaxy lies along the
longest leg of that triangle.
Radial velocity (km/sec):
+1,877
NGC 5520
Galaxy (Sb II-III)
Observed with C11 on 7/4/03; s8, t8
Magnification: 140x
- 11 -
Zone 72
Zone 72, Map 2
Reference Star
Lambda Boo (19 Boo; HD 125162; SAO 44965)
Position: 1416+4605
Mag : 4.18
Spectrum : A0
Color : W
Assumed distance: 97 light years
Assumed luminosity (suns): 16
Notes:
This is the prototype of the Lambda Boo variables.
Double Stars
Easy
STF 1834
ADS 9229; HD 125796; SAO 45000
Rating: 4 D
Position: 1420+4831
A
B
Magnitude
8.15
8.33
Separation PA
—
—
1.5 +
103 -
Year
—
1999
Spectra
F2 V
Colors
W
W
Notes:
1829: 1.4 @ 114. Over 100 measurements. The orbit takes 321.0 years (Van den
Bos, 1936) with semi-major axis of 0.90" and direct motion.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.10 inches.
Separation: AB = 2,851 feet..
Distance (LY): 232
Total luminosity (Suns): 6.6
- 12 -
Zone 72
Swift 1
ADS 9090
Rating: 3 E
Position: 1402+4620
A
B
Magnitude
10.05
10.26
Separation PA
—
—
3.7 +
23 +
Year
—
1998
Spectra
M1
Colors
O
yO
Notes:
1889: 2.3 @ 8. 85 measurements.
Observations:
C11 at 115x! I wish it was a brighter system!
h2710
ADS 9211; SAO 44979
Rating: 3 E
Position: 1418+4846
A
C
Magnitude
9.28
9.69
Separation PA
—
—
24
321
Year
—
1933
Notes:
The stars share common proper motion.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.60 inches.
Separation: AB = 5.05 miles.
Distance (LY): 135
Total luminosity (Suns): 0.5
- 13 -
Spectra
A2
Colors
W
W
Zone 72
h2716
ADS 9248
Rating: 3 E
Position: 1423+4623
A
B
Magnitude
10.57
10.92
Separation PA
—
—
5.8 +
86 =
Year
—
1996
Spectra
Colors
W
yO?
Notes:
1894: 5.4 @ 86. 7 measurements.
Observations:
C11 at 115x.
Distance (LY): 90
Total luminosity (Suns): 0.065
H VI 112
13 Boo, CF BooHD 123782; SAO 44905
Rating: 4 E
Position: 1408+4928
A
B
Magnitude Separation PA
5.25
—
—
10.9077.0 - 271 -?
1989
Year
—
Spectra
M1.5 III
?
Colors
rO!
Notes:
1879: 83.5 @ 95. 12 measurements. Quadrant reversal?
This may be an optical pair as Hipparcos shows different distances (560 and 196 light
years).
Observations:
C8 at 104x. Wonderful, intense color in A.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 1.20 inches.
Separation: AB = 67.3 miles.
Distance (LY): 560
Total luminosity (Suns): 191
- 14 -
Zone 72
STF 1806
ADS 9129; SAO 44907
Rating: 4 E
Position: 1409+4830
A
B
Magnitude
10.08
11.03
Separation PA
—
—
13.0 173 -
Year
—
1991
Spectra
F8
Colors
W
W
Notes:
1831: 13.2 @ 174. 17 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.8 inches.
Separation: AB = 132 miles.
Distance (LY): 6,520
Total luminosity (Suns): 478
Bemporad 8
HD 234112; SAO 29036
Rating: 4 E
Position: 1412+4946
A
B
Magnitude
9.85
11.04
Separation PA
—
—
24.6 240 -?
Notes:
1905: 24.9 @ 241. 3 measurements.
Observations:
C11 at 115x.
- 15 -
Year
—
1991
Spectra
F0
Colors
W
bW
Zone 72
STF 1815
ADS 9162; HD 124474; SAO 44938
Rating: 4 E
Position: 1413+4512
A
B
Magnitude Separation PA
9.22
—
—
10.508.9 + 151 1991
Year
—
Spectra
K0
W
Colors
Y
Notes:
1831: 8.8 @ 153. 13 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.1 inches.
Separation: AB = 7.08 miles.
Distance (LY): 510
Total luminosity (Suns): 5.45
STF 1843
ADS 9259; HD 126531; SAO 45045
Rating: 4 E
Position: 1425+4750
A
B
C
Magnitude
7.64
9.73
Separation
—
19.6 99.0 +
PA
—
186 64 -
Year
—
1997
1997
Spectra
F5 V
F5
Colors
Y
R
No
Notes:
AB 1830: 20.2 @ 188. 24 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars exhibit common proper
motion.
AC 1982: 97.8 @ 65. 2 measurements.
Observations:
C8 at 65x.
- 16 -
Zone 72
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.40 inches; B = 14.4 inches.
Separation: AB = 11.0 miles; AC = 55.7 miles.
Distance (LY): 361
Total luminosity (Suns): 10
h2697
Rating: 5 E
Position: 1401+4625
A
B
Magnitude
10.75
11.87
Separation PA
—
—
23.4 297 +
Year
—
1991
Spectra
Colors
?
?
Notes:
1894: 25.3 @ 294. 6 measurements.
Observations:
C8 at 104x.
Distance (LY): 247
Total luminosity (Suns): 0.3
Moderate
STF 1826
ADS 9183; HD 124952; SAO 44956
Rating: 3 M
Position: 1415+4659
A
B
C
Magnitude
8.47
9.37
12.70
Separation
—
4.3 43.7 +
PA
—
311 355 +?
Year
—
1998
1914
Notes:
AB 1832: 4.4 @ 315. 28 measurements.
AC 1906: 42.8 @ 176. 2 measurements. Quadrant reversal?
Observations:
C8 at 206x. A 12m star is 30" away in pa 180.
- 17 -
Spectra
F8
Colors
W
O
?
Zone 72
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 15.4 inches.
Separation: AB = 3.22 miles; AC = 32.8 miles.
Distance (LY): 481
Total luminosity (Suns): 9
Bur 615
ADS 9241; SAO 45018
Rating: 3 M
Position: 1422+4832
A
B
Magnitude
9.52
10.60
Separation PA
—
—
2.8 +
233 -
Year
—
1966
Spectra
K0
Colors
O
Y
Notes:
1878: 2.6 @ 237. 23 measurements.
Observations:
C11 at 339x.
Espin 1085
ADS 9199; SAO 44967
Rating: 4 M
Position: 1417+4633
A
B
Magnitude
8.53
11.80
Separation PA
—
—
6.1
172
Notes:
1 measurement.
- 18 -
Year
—
1911
Spectra
K5
Colors
O!
W
Zone 72
Observations:
C11 at 193x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 35.5 inches.
Separation: AB = 2.21 miles.
Distance (LY): 233
Total luminosity (Suns): 1.72
Deep Sky Objects
Difficult
NGC 5448
Other Names: UGC 8969, H II 691
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1403+4910
Type : Gal
Surface brightness: 13.1
Class: (R)SAB(r)a
Dimensions: 3.5' x 1'
Magnitude : 12.3
PA: 115
Observations:
C8 at 104x. A very faint E-W streak, with a 10m star about 15 min WSW.
C11 at 115x. Very low surface brightness, with a somewhat brighter center. Possibly
some splotchiness.
C11 at 98x with Orion Ultra-Block Filter. Very faint oval with a very rapidly
brightening center.
Distance: 91,000,000 light years
Radial velocity (km/sec): +2,102
Luminosity: 7,800,000,000 Suns
- 19 -
Zone 72
NGC 5633
Other Names: UGC 9271, H I 185
Rating: 5 D
Position: 1428+4609
Type : Gal
Surface brightness: 13.2
Class: (R)SA(rs)b II-III
Dimensions: 60" x 30"
Magnitude : 12.8
PA: 10
Observations:
C8 at 104x. Faint, fuzzy N-S star lying 31 minS of 8.3m SAO 45053. The nucleus is
a little brighter and concentrated. Two 11m stars lie just N of it.
Distance: 110,000,000 light years
Radial velocity (km/sec): +2,457
Luminosity: 7,200,000,000 Suns
- 20 -
Zone 72
Zone 72, Map 3
Double Stars
Easy
STF 1863
ADS 9329; HD 128941; SAO 29224
Rating: 3 D
Position: 1438+5135
A
B
Magnitude
7.72
7.85
Separation PA
—
—
0.7 =
65 -
Year
—
1997
Spectra
F2 V
Colors
W
W
Notes:
1830: 0.7 @ 110. 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 = 1,584 feet.
Distance (LY): 279
Total luminosity (Suns): 14.8
A 1623
ADS 9348; HD 129562; SAO 29245
Rating: 4 D
Position: 1441+5238
A
B
Magnitude
8.72
10.78
Separation PA
—
—
2.2 237 +
Notes:
1907: 2.3 @ 227. 14 measurements.
- 21 -
Year
—
1992
Spectra
F8
Colors
W
yO
Zone 72
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 15.6 inches.
Separation: AB = 1.05 miles.
Distance (LY): 307
Total luminosity (Suns): 3.32
STF 1889 rej
ADS 9405; HD 131040; SAO 29296
Rating: 3 E
Position: 1450+5123
A
B
Magnitude
6.49
9.80
Separation PA
—
—
15.2 91 +
Year
—
1991
Spectra
F5 IV
G7
Colors
Y
dB
Notes:
1900: 16.1 @ 88. 15 measurements. Both stars are spectroscopic binaries. The stars
have different proper motions.
Observations:
C8 at 83x. It lies at the center of a quadrangle of stars.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.33 inches; B = 24.5 inches.
Separation: AB = 3.98 miles.
Distance (LY): 168
Total luminosity (Suns): 5.9
- 22 -
Zone 72
A. G. 196
HD 234189; SAO 29333
Rating: 3 E
Position: 1455+5038
A
B
Magnitude
10.04
10.76
Separation PA
—
—
27.0 +
139 =
Year
—
1991
Spectra
G5
Colors
Y
B?
Notes:
1900: 25.3 @ 139. 6 measurements.
These may be an optical pair as Hipparcos gives different distances (257 and 105 light
years).
Observations:
C11 at 115x. B appeared to be brighter than A.
h2751
Rating: 5 E
Position: 1449+5323
A
B
Magnitude
10.97
11.50
Separation PA
—
—
9.2
131
Notes:
1 measurement.
Observations:
C11 at 115x.
- 23 -
Year
—
1908
Spectra
Colors
W?
?
Zone 72
A 1625
ADS 9434; SAO 29329
Rating: 5 E
Position: 1454+5217
A
B
C
Magnitude
9.19
9.57
11.54
Separation
—
3.4 +
30.5 -
PA
—
298 +
46 +
Year
—
1998
1991
Spectra
F8
Colors
bW
No
W
Notes:
AB 1907: 3.2 @ 299. 13 measurements.
AC 1904: 31.0 @ 42. 5 measurements.
C has a 14.50m companion at 6.4 @ 144 (1918).
Observations:
C8 at 104x.
Moderate
STF 1871
ADS 9350; HD 129600; SAO 29246
Rating: 4 M
Position: 1442+5124
A
B
Magnitude
8.05
8.16
Separation PA
—
—
1.8 =
309 +
Year
—
1997
Notes:
1829: 1.8 @ 283. Over 100 measurements.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.70 inches.
Separation: AB = 1.11 miles.
Distance (LY): 397
Total luminosity (Suns): 23
- 24 -
Spectra
F0 V
Colors
O
O
Zone 72
Deep Sky Objects
Moderate
NGC 5687
Other Names: UGC 9395, H II 808
Astronomical League Program: Herschel II Club
Rating: 5 M
Position: 1435+5429
Type : Gal
Surface brightness: 13.1
Class: S0
Dimensions: 36" x 24"
Magnitude : 12.7
PA: 105
Observations:
C8 at 65x. Small and faint, it is bracketed by two 9m stars.
C11 at 193x. Bright nucleus, very small and faint halo.
Distance: 99,000,000 light years
Radial velocity (km/sec): +2,286
Luminosity: 6,400,000,000 Suns
Difficult
NGC 5820
Other Names: UGC 9642, H II 756
Rating: 5 D
Position: 1459+5323
Type : Gal
Surface brightness: 13.9
Class: E5
Dimensions: 60" x 20"
Magnitude : 12.8
Observations:
C8 at 65x. Small and faint, the axis runs E-W. A bright double (Sh 191; 6.8m-7.4m;
41" @ 342) lies 8 min E.
Model (where the Sun is a baseball):
Its diameter would be 21 million miles.
Distance (LY): 225,000,000
Radial velocity (km/sec): +3,444
Luminosity (suns): 30,000,000,000
- 25 -
Zone 72
Zone 72, Map 4
Double Stars
Espin 962
ADS 9365; SAO 45194
Rating: 5 D
Position: 1444+4743
A
B
Magnitude
9.27
11.30
Separation PA
—
—
8.5
170
Year
—
1910
Spectra
F5
Colors
W
?
Notes:
1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.0 inches.
Separation: AB = 6.10 miles.
Distance (LY): 460
Total luminosity (Suns): 3.5
STF 1874
HD 129664; SAO 45180
Rating: 3 E
Position: 1442+4908
A
B
Magnitude
8.70
10.17
Separation PA
—
—
27.1 +
289 +
Year
—
1991
Spectra
G5
G0
Colors
O!
dB!
Notes:
1830: 25.7 @ 288. 14 measurements.The stars show similar proper motions.
Observations:
C8 at 104x. Great contrast.
- 26 -
Zone 72
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.2 inches;B = 19.1 inches.
Separation: AB = 50.7 miles.
Distance (LY): 1,200
Total luminosity (Suns): 47
h2732
HD 127947; SAO 45102
Rating: 4 E
Position: 1433+4505
A
B
Magnitude
9.56
10.91
Separation PA
—
—
92.6 +
349 -
Year
—
1983
Spectra
A2
Colors
W
?
Notes:
1894: 92.2 @ 354. 5 measurements.
Observations:
C8 at 104x. A 10.5m star is 15" in pa 15.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.72 inches.
Separation: AB = 6.35 miles.
Distance (LY): 44
Total luminosity (Suns): 0.028
Espin 609
ADS 9327; SAO 45141
Rating: 4 E
Position: 1438+4743
A
B
C
Magnitude
9.90
11.60
10.23
Separation
—
4.3 78.8 +
PA
—
16 +
297 =?
Notes:
AB 1898: 4.8 @ 8. 8 measurements.
- 27 -
Year
—
1975
1991
Spectra
G5
Colors
Y
No
O
Zone 72
AC 1898: 78.6 @ 117. 9 measurements. Quadrant reversal?
Observations:
C8 at 104x. The field to the SW is very nice!
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 21.6 inches.
Separation: AB = 4,171 feet; AC = 14.6 miles.
Distance (LY): 119
Total luminosity (Suns): 0.2
Moderate
39 Boo
STF 1890; ADS 9406; HD 131041; SAO 45231
Rating: 1 M
Position: 1450+4843
A
B
Magnitude
5.68
6.04
Separation PA
—
—
2.7 46 +
Year
—
1998
Spectra
F5 V
F6 V
Colors
W
W
Notes:
1822: 3.7 @ 44. Over 100 measurements. The stars share common proper motion.
Star B is a spectroscopic binary with a 12.822 day period.
Observations:
C8 at 280x. A fine pair! Webb saw them as W, V, but Dembowski says both are W.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.35 inches; B = 11.9 inches.
Separation: AB = 1.00
Distance (LY): 229
Total luminosity (Suns): 20.9
See sketch, next page.
- 28 -
Zone 72
39 Boo (Σ1890)
Double star; W, W; 5.68 / 6.04; 2.7 @ 46
Observed with C8 on 5/20/95; s7, t6
Magnification: 270x
OS 283
Rating: 5 M
OS 581 (C); Hussey 57 (BC)ADS 9306; HD 127930; SAO 45099
Position: 1433+4911
A
B
C
Magnitude
7.96
11.70
12.40
Separation
—
5.5 +
6.5
PA
—
129 131
Notes:
AB 1846: 4.8 @ 131. 11 measurements.
AC 1 measurement.
Observations:
C11 at 193x.
- 29 -
Year
—
1991
1898
Spectra
F5
Colors
W
W
No
Zone 72
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.0 inches.
Separation: AB = 2.39 miles; AC = 2.83 miles.
Distance (LY): 279
Total luminosity (Suns): 4.18
OS 284
ADS 9339; HD 129308; SAO 45163
Rating: 5 M
Position: 1440+4843
A
B
Magnitude
7.86
11.44
Separation PA
—
—
7.3 102 -
Year
—
1991
Spectra
F0
Colors
W
W?
Notes:
1846: 9.0 @ 144. 22 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.3 inches.
Separation: AB = 3.71 miles.
Distance (LY): 326
Total luminosity (Suns): 6.19
Hipparcos 2093
Rating: 5 M
Position: 1450+4517
A
B
Magnitude
10.70
12.01
Separation PA
—
—
7.3 =
183 +
Notes:
1991: 7.3 @ 180. 2 measurements.
- 30 -
Year
—
1999
Spectra
K5
Colors
O
W?
Zone 72
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 39.7 inches.
Separation: AB = 2.81 miles.
Distance (LY): 247
Total luminosity (Suns): 0.326
Bemporad 14
Rating: 5 M
Position: 1456+4914
A
B
Magnitude
10.77
11.89
Separation PA
—
—
26.7 +
151 -
Notes:
1902: 24.2 @ 153. 5 measurements.
Observations:
C8 at 104x.
- 31 -
Year
—
1991
Spectra
Colors
W
W
Zone 72
Zone 72 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
Kappa Boo
1414+5147
1E
1
Swift 1
1402+4620
3E
2
STF 1814
1411+5015
3E
1
STF 1829
1415+5026
3E
1
Iota Boo
1416+5122
3E
1
h2710
1418+4846
3E
2
Espin 19
1420+5141
3E
1
STF 1839
1421+5354
3E
1
h2716
1423+4623
3E
2
STF 1874
1442+4908
3E
4
STF 1889 rej
1450+5123
3E
3
A. G. 196
1455+5038
3E
3
H VI 112
1408+4928
4E
2
STF 1806
1409+4830
4E
2
Bemporad 8
1412+4946
4E
2
STF 1815
1413+4512
4E
2
STF 1843
1425+4750
4E
2
h2732
1433+4505
4E
4
Espin 609
1438+4743
4E
4
h2697
1401+4625
5E
2
h2712
1420+5402
5E
1
Theta Boo
1425+5151
5E
1
Component
A
B
A
B
A
B
A
B
A
B
C
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
A
B
A
B
C
A
B
A
B
A
B
- 32 -
Mag
4.53
6.62
10.05
10.26
9.25
9.83
7.62
8.26
4.754
8.34
13.61
9.28
9.69
10.09
11.77
9.72
8.76
8.85
10.57
10.92
8.70
10.17
6.49
9.80
10.04
10.76
5.25
10.90
10.08
11.03
9.85
11.04
9.22
10.50
7.64
9.73
9.56
10.91
9.90
11.60
10.23
10.75
11.87
13.36
14.00
4.05
11.10
Separation
—
14.0 +
—
3.7 +
—
11.2 +
—
5.6 +
—
38.9 +
86.7 +
—
24
—
1.7 =
41.5 +
—
14.5 +
—
5.8 +
—
27.1 +
—
15.2 —
27.0 +
—
77.0 —
13.0 —
24.6 —
8.9 +
—
19.6 —
92.6 +
—
4.3 78.8 +
—
23.4 —
28.5
—
69.5 +
PA
—
237 +
—
23 +
—
256 =
—
151 +
—
33 =
86.7 +
—
24
—
47 =
41.5 +
—
81 —
86 =
—
289 +
—
91 +
—
139 =
—
271 -?
—
173 —
240 -?
—
151 —
186 —
349 —
16 +
78.8 +
—
297 +
—
299
—
182 =
Zone 72
Designation
Position
Rating
Map
h2725
1429+5430
5E
1
h2751
1449+5323
5E
3
A 1625
1454+5217
5E
3
39 Boo
1450+4843
1M
4
STF 1826
1415+4659
3M
2
Bur 615
1422+4832
3M
2
Espin 1085
1417+4633
4M
2
STF 1871
1442+5124
4M
3
h2717
1422+5452
5M
1
OS 283
1433+4911
5M
4
OS 284
Hipparcos
2093
1440+4843
5M
4
1450+4517
5M
4
Bemporad 14
1456+4914
5M
4
STF 1863
1438+5135
3D
3
STF 1834
1420+4831
4D
2
A 1623
1441+5238
4D
3
Espin 962
1444+4743
5D
4
Component
A
B
C
A
B
A
B
C
A
B
A
B
C
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
- 33 -
Mag
9.31
12.30
11.97
10.97
11.50
9.19
9.57
11.54
5.68
6.04
8.47
9.37
12.70
9.52
10.60
8.53
11.80
8.05
8.16
10.70
11.20
7.96
11.70
12.40
7.86
11.44
10.70
12.01
10.77
11.89
7.72
7.85
8.15
8.33
8.72
10.78
9.27
11.30
Separation
—
0.9 25.4 +
—
9.2
—
3.4 +
30.5 —
2.7 —
4.3 43.7 +
—
2.8 +
—
6.1
—
1.8 =
—
9.6 +
—
5.5 +
6.5
—
7.3 —
7.3 =
—
26.7 +
—
0.7 =
—
1.5 +
—
2.2 —
8.5
PA
—
223 25.4 +
—
131
—
298 +
30.5 —
46 +
—
311 43.7 +
—
233 —
172
—
309 +
—
290 —
129 6.5
—
102 —
183 +
—
151 —
65 —
103 —
237 +
—
170
Zone 72
Deep Sky Objects
Object
NGC 5676
NGC 5687
NGC 5448
NGC 5457
NGC 5474
NGC 5473
NGC 5480
NGC 5481
NGC 5520
NGC 5633
NGC 5660
NGC 5689
NGC 5820
Position
1433+4928
1435+5429
1403+4910
1403+5421
1405+5340
1405+5454
1406+5043
1407+5043
1412+5022
1428+4609
1430+4937
1436+4845
1459+5323
Rating
5M
5M
5D
5D
5D
5D
5D
5D
5D
5D
5D
5D
5D
Map
4
3
2
1
1
1
1
1
1
2
4
4
3
Specifications
Surface
Type
Mag
Br
Gal (SA(rs)bc II)
11.9
13.0
Gal (S0)
12.7
13.1
Gal (Sa)
12.3
13.1
Gal (Sc)
9.0
14.8
Gal (Sc)
11.5
14.3
Gal (SAB(s)0-:)
12.6
12.7
Gal (Sc)
12.6
12.3
Gal (E+)
12.2
13.0
Gal (SB II-III)
12.4
12.8
Gal ((R)SA(rs)b II-III)
12.8
13.2
Gal (SAB(rs)c II)
12.3
14.0
Gal (SB(s)0/a:)
12.6
13.1
Gal (E5)
12.8
13.9
- 34 -
Population