Zone 120, Master Map
Normal View
+34°00'
Zone Master, Normal View, 10 deg FOV
c
+32°00'
e
+30°00'
Bootes
ρ
Canes Venatici
f
ψ
d
+28°00'
σ
+26°00'
Izarε
ω
15h 00m
14h 48m
14h 36m
14h 24m
14h 12m
14h 00m
Zone 120, Map 1
Normal Image
NGC 5590
+35°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 5444
NGC 5445
h547
NGC 5614
OS 274
NGC 5440
+34°00'
h554
+33°00'
STF 1818
NGC 5623
NGC 5611
+32°00'
Hertzsprung 10
STF 1854 rej
STF 1855
+31°00'
h2704
ρ
Canes Venatici
Rho Boo
h549
14h 30m
14h 25m
14h 20m
14h 15m
14h 10m
14h 05m
14h 00m
Zone 120, Map 1
Mirror Image
h535
NGC 5590
NGC 5444
NGC 5445
NGC 5440
+35°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h547
NGC 5614
OS 274
+34°00'
Bur 937
STF 1818
+33°00'
NGC 5623
NGC 5611
+32°00'
Hertzsprung 10
STF 1854 rej
+31°00'
h2704
Canes Venatici
ρ
h549
14h 00m
14h 05m
14h 10m
14h 15m
14h 20m
14h 25m
14h 30m
Zone 120, Map 2
Normal Image
+30°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+29°00'
h549
STF 1816
STF 1812
STF 1850
Canes Venatici
STF 1810
+28°00'
NGC 5466
h544
+27°00'
NGC 5635
STF 1808
+26°00'
h2715
NGC 5629
NGC 5523
NGC 5548
14h 30m
14h 25m
14h 20m
14h 15m
14h 10m
14h 05m
14h 00m
Zone 120, Map 2
Mirror Image
+30°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+29°00'
h549
STF 1816
STF 1812
h544
Canes Venatici
STF 1850
STF 1810
+28°00'
NGC 5466
+27°00'
NGC 5635
STF 1808
+26°00'
h2715
STF 1793
NGC 5629
NGC 5523
NGC 5548
14h 00m
14h 05m
14h 10m
14h 15m
14h 20m
14h 25m
14h 30m
Zone 120, Map 3
Normal Image
+35°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h562
h560
Ali 131
+34°00'
h554
STF 1891
h555
h556
+33°00'
h565
h559
Kuiper 68
+32°00'
OS 289
STF 1854 rej
STF 1855
NGC 5653
STF 1867
h2750
Scheiner 537
Bootes
ρ
Rho Boo
Sigma Boo σ
15h 00m
14h 55m
14h 50m
14h 45m
14h 40m
14h 35m
14h 30m
+31°00'
STF 1901
Zone 120, Map 3
Mirror Image
h562
Ali 131
h560
+35°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+34°00'
h554
STF 1891
h555
h556
+33°00'
NGC 5623
h559
Kuiper 68
+32°00'
OS 289
STF 1854 rej
NGC 5653
STF 1867
+31°00'
STF 1855
h2750
Scheiner 537
Bootes
ρ
Rho Boo
σ
14h 30m
Sigma Boo
14h 35m
14h 40m
14h 45m
14h 50m
14h 55m
15h 00m
Zone 120, Map 4
Normal Image
+30°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 5798
Sigma Boo σ
+29°00'
STF 1893
h2745
h5487
ε
+27°00'
+28°00'
h5489
Izar
Epsilon Boo
+26°00'
A. G. 346
h2730
15h 00m
14h 55m
14h 50m
14h 45m
14h 40m
14h 35m
14h 30m
Zone 120, Map 4
Mirror Image
+30°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 5798
σ
Sigma Boo
+29°00'
STF 1893
h2745
h5487
h5489
+28°00'
STF 1850
ε
+27°00'
NGC 5635
Izar
Epsilon Boo
+26°00'
A. G. 346
h2730
14h 30m
14h 35m
14h 40m
14h 45m
14h 50m
14h 55m
15h 00m
Zone 120
Index
35 Double Stars, 1 Globular Cluster, 10 Galaxies
A
NGC 5548 ................................................. 13
NGC 5611 ................................................... 5
NGC 5614 ................................................... 5
NGC 5623 ................................................... 6
NGC 5629 ................................................. 15
NGC 5635 ................................................. 16
NGC 5653 ................................................. 23
NGC 5798 ................................................. 28
A. G. 346................................................... 25
Ali 131 ...................................................... 21
E
Epsilon Boo............................................... 26
H
h2704........................................................... 4
h2715......................................................... 10
h2730......................................................... 25
h2745......................................................... 27
h2750......................................................... 20
h544........................................................... 12
h5487......................................................... 24
h5489......................................................... 25
h549............................................................. 9
h555........................................................... 17
h556........................................................... 17
h559........................................................... 20
h560........................................................... 19
Hertzsprung 10............................................ 3
O
OS 274 ........................................................ 2
OS 289 ...................................................... 22
R
Rho Boo .................................................... 19
S
Scheiner 537.............................................. 18
Sigma Boo................................................. 23
STF 1808................................................... 10
STF 1810................................................... 11
STF 1812..................................................... 8
STF 1816................................................... 11
STF 1818..................................................... 2
STF 1850..................................................... 8
STF 1854 rej ............................................... 3
STF 1855................................................... 16
STF 1867................................................... 22
STF 1891................................................... 18
STF 1893................................................... 24
K
Kuiper 68 .................................................. 21
N
NGC 5440 ................................................... 6
NGC 5466 ................................................. 15
NGC 5523 ................................................. 12
-1-
Zone 120
Zone 120, Map 1
Double Stars
Easy
STF 1818
Rating: 3 E
ADS 9179; HD 124697; SAO 64014
Position: 1414+3356
A
B
Magnitude
8.71
10.22
Separation PA
—
—
5.5 =
330 +
Year
—
1991
Spectra
G2 III
Colors
Y
O
Notes:
1832: 5.5 @ 327. 13 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 34.5 inches.
Separation: AB = 1.88 miles.
Distance (LY): 220
Total luminosity (Suns): 1.5
OS 274
Rating: 4 E
ADS 9112; HD 123048; SAO 63935
Position: 1407+3447
A
B
Magnitude
7.02
10.42
Separation PA
—
—
12.8 55 -
Notes:
1843: 13.1 @ 72. 24 measurements.
Observations:
C8 at 65x.
-2-
Year
—
1991
Spectra
K0 III
Colors
Y
?
Zone 120
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 46.2 inches.
Separation: AB = 9.28 miles.
Distance (LY): 465
Total luminosity (Suns): 28
Hertzsprung 10
Rating: 4 E
SAO 64035
Position: 1416+3235
A
B
Magnitude
9.55
10.00
Separation PA
—
—
92.9 +!! 1 -
Year
—
1948
Spectra
F8
Colors
W
O
Notes:
1898: 72.3 @ 2. 6 measurements.
Hipparcos/Tycho mission 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 = 5.65 miles.
Distance (LY): 39
Total luminosity (Suns): 0.03
STF 1854 rej
Rating: 4 E
ADS 9288; HD 127304; SAO 64178
Position: 1430+3148
A
B
Magnitude
6.06
11.34
Separation PA
—
—
26.3 =
255 -
Year
—
1958
Spectra
A0 V
Colors
W
?
Notes:
1879: 26.3 @ 257. 9 measurements. Hipparcos/Tycho data show different distances
for these stars; they may be optical.
-3-
Zone 120
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.00 inches.
Separation: AB = 14.3 miles.
Distance (LY): 349
Total luminosity (Suns): 35.6
Moderate
h2704
Rating: 5 M
HD 124441; SAO 63989
Position: 1413+3135
A
B
Magnitude
8.23
12.99
Separation PA
—
—
44.3 +
354 +
Year
—
1989
Notes:
1906: 42.8 @ 350. 2 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 32.4 inches.
Separation: AB = 16.2 miles.
Distance (LY): 235
Total luminosity (Suns): 1.427
-4-
Spectra
G0 III
Colors
W
?
Zone 120
Deep Sky Objects
Difficult
NGC 5611
Rating: 4 D
Other Names: UGC 9227
Position: 1424+3303
Type: Gal
Surface brightness: 12.3
Class: S0
Dimensions: 1.3' x 0.6'
Magnitude: 12.6
PA: 63
Observations:
C11 at 98x. Small, and very rapidly brightens to the middle.
Radial velocity (k/s): +2,015
NGC 5614
Rating: 4 D
Other Names: UGC 9226; H II 420
Position: 1424+3452
Type: Gal
Surface brightness: 13.3
Class: SA(r)ab pec
Dimensions: 2.1' x 0.8'
Magnitude: 12.5
Observations:
C8 at 104x. Round, featureless, and bright; it is set below a triangle of 10m, 10m and
11m.
C11 at 193x. Very faint and small, round, and not much brighter in the center.
Averted vision and tube movement helped.
Distance (LY): 170,000,000
Radial velocity (km/sec): +3,969
Total luminosity (Suns): 22,700,000,000
-5-
Zone 120
NGC 5623
Rating: 4 D
Other Names: H II 329; UGC 9260
Position: 1427+3314
Type: Gal
Surface brightness: 13.0
Class: E
Dimensions: 1.6' x 1.1'
Magnitude: 12.5
PA: 17
Observations:
C8 at 104x. It revealed itself as a faint oval patch with tube movement and averted
vision. No other details. It is flanked N and S by 10m stars.
Radial velocity (km/sec): +3,356
NGC 5440
Rating: 5 D
Other Names: UGC 8963; H II 416
Astronomical League Program: Herschel II Club
Position: 1403+3446
Type: Gal
Surface brightness: 13.7
Class: Sa
Dimensions: 2.9' x 2.1'
Magnitude: 12.3
Notes:
Member of NGC 5444 Group.
This galaxy produced supernova 1998D (type Ia).
Observations:
C11 at 140x. t is a very faint oval 1 min SE of a 13m star. No details were pulled out
on this night.
Radial velocity (km/sec): +3,689
See sketch, next page.
-6-
Zone 120
NGC 5440
Galaxy (Sa)
Observed with C11 on 7/4/03
Magnification: 140x
-7-
Zone 120
Zone 120, Map 2
Double Stars
Easy
STF 1812
Rating: 3 E
ADS 9158; HD 124346; SAO 83219
Position: 1413+2843
A
B
C
Magnitude
7.81
9.78
11.80
Separation
—
14.2 =
72.5 -
PA
—
109 +
153 =
Year
—
1998
1953
Spectra
F2 V
Colors
W
pB
?
Notes:
AB 1832: 14.2 @ 108. 41 measurements.
AC 1908: 72.6 @ 153. 2 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.10 inches.
Separation: AB = 6.40 miles; AC = 32.7 miles.
Distance (LY): 289
Total luminosity (Suns): 6.3
STF 1850
Rating: 3 E
ADS 9277; HD 127067; SAO 83374
Position: 1429+2818
A
B
Magnitude
7.12
7.62
Separation PA
—
—
25.7 =
262 =
-8-
Year
—
1996
Spectra
A1 V
A1 V
Colors
W
W
Zone 120
Notes:
1832: 25.7 @ 262. 65 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars exhibit common proper
motion. B is also a spectroscopic binary.
Observations:
C8 at 104x. Webb saw them as W or pY and pB.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.70 inches; B = 8.70 inches.
Separation: AB = 34.5 miles.
Distance (LY): 860
Total luminosity (Suns): 133
h549
Rating: 4 E
HD 126306; SAO 64121
Position: 1424+2959
A
B
Magnitude
8.16
11.94
Separation PA
—
—
30.9 +
137 =
Year
—
1903
Notes:
1879: 30.8 @ 137. 2 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 34.7 inches.
Separation: AB = 198 miles.
Distance (LY): 4,100
Total luminosity (Suns): 744
-9-
Spectra
K
Colors
yO
W
Zone 120
h2715
Position: 1424+2621
A
B
Magnitude
11.71
13.40
Rating: 5 E
Separation PA
—
—
11.8
342
Year
—
1910
Spectra
Colors
Y
?
Notes:
1 measurement.
Observations:
C11 at 115x.
Moderate
STF 1808
Rating: 3 M
ADS 9136; HD 123963; SAO 83201
Position: 1410+2636
A
B
C
Magnitude
8.33
9.70
11.90
Separation
—
2.6 59.2 +
PA
—
81 +
111 -
Year
—
1998
1987
Notes:
AB 1832: 2.8 @ 69. 78 measurements.
AC 1896: 45.1 @ 122. 6 measurements.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.8 inches.
Separation: AB = 5,016 feet; AC = 21.8 miles.
Distance (LY): 236
Total luminosity (Suns): 2.8
- 10 -
Spectra
G5
Colors
Y
rO!
W
Zone 120
STF 1810
Rating: 4 M
ADS 9150
Position: 1412+2802
A
B
Magnitude
9.03
9.76
Separation PA
—
—
2.3 +
183 +
Year
—
1998
Spectra
G0
Colors
Y
W
Notes:
1832: 1.8 @ 174. 36 measurements.
Observations:
C11 at 560x— Neat little split. It is the N vertex of a small triangle of 9m stars.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.0 inches.
Separation: AB = 1.50 miles.
Distance (LY): 420
Total luminosity (Suns): 9
Difficult
STF 1816
Rating: 3 D
ADS 9174; SAO 83235
Position: 1414+2906
A
B
Magnitude
7.46
7.79
Separation PA
—
—
0.6 91 +
Year
—
1997
Notes:
1831: 1.9 @ 80. Over 100 measurements.
Observations:
C8 at 697x. Webb saw A as Y.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.1 inches; B = 7.00 inches.
Separation: AB = 1,478 feet.
Distance (LY): 307
Total luminosity (Suns): 21
- 11 -
Spectra
F0
A2
Colors
W
W
Zone 120
h544
Rating: 5 D
ADS 9210; SAO 83282
Position: 1418+2823
A
B
Magnitude
10.06
12.50
Separation PA
—
—
8.4 326 +
Year
—
1931
Spectra
K0
Colors
yO
?
Notes:
1896: 9.6 @ 324. 3 measurements.
Observations:
C11 at 193x.
Deep Sky Objects
Moderate
NGC 5523
Rating: 5 M
Other Names: UGC 9119; H III 134
Astronomical League Program: Herschel II Club
Position: 1415+2519
Type: Gal
Surface brightness: 13.8
Class: SA(s)cd: II-III
Dimensions: 4.3' x 1.3'
Magnitude: 12.1
PA: 99
Observations:
C11 at 140x. Fairly bright and oblong with a somewhat brighter nucleus. Two 10m
stars bracket it N and S.
Distance (LY): 48,000,000
Radial velocity (km/sec): +1,047
Total luminosity (Suns): 2,700,000,000
See sketch, next page.
- 12 -
Zone 120
NGC 5523
Galaxy (SA(s)cd: II-III)
Observed with C11 on 7/4/03; s8, t8
Magnification: 140x
NGC 5548
Rating: 5 M
Other Names: UGC 9149; H II 194
Astronomical League Program: Herschel II Club
Position: 1418+2508
Type: Gal
Surface brightness: 13.3
Class: (R')SA(s)0/a
Dimensions: 1.6' x 1.5'
Magnitude: 12.6
PA: 110
Notes:
This galaxy is a Seyfert galaxy.
Observations:
C11 at 140x. This galaxy shows a very bright and starlike nucleus and a very difficult
and tiny (~10" dia) halo. About 6 min NW lies a very faint (~12m) narrow isosceles
triangle and 6 min to the E lies a 10m star.
- 13 -
Zone 120
Model (where the Sun is a baseball):
Its diameter would be 33.5 million miles.
Distance (LY): 224,000,000
Radial velocity (km/sec): +5,149
Luminosity (suns): 36,000,000,000
NGC 5548
Galaxy ( (R’)SA(s)0/a )
Observed with C11 on 7/3/03; s7, t5
Magnification: 140x
- 14 -
Zone 120
Difficult
NGC 5466
Rating: 5 D
Other Names: H VI 9
Astronomical League Program: Herschel 400 Club
Position: 1406+2832
Type: Gc
Dimensions: 5'
Class: 12
Magnitude: 9.1
Notes:
William Herschel discovered this globular on May 17, 1784.
The brightest stars are 13.8m and the horizontal branch is 16.6m.
Observations:
C8 at 65x. Semi-resolved, large and faint. Steve Coe, using a 13-inch Newtonian,
said it is shaped "somewhat like a heart." A 7m star is about 20 min ESE.
C11 at 98x. Estimated class of 10. It filled 1/3 the 32 min fov. It is a scatter, loose
group, and was semi-resolved. Three stars (1 bright, two fainter) lie to the east about 10
min and point to it.
Model (where the Sun is a baseball):
Its diameter would be 22,000 miles.
Distance (LY): 51,800
Luminosity (suns): 48,000
NGC 5629
Rating: 5 D
Other Names: UGC 9281
Position: 1428+2551
Type: Gal
Surface brightness: 13.2
Class: S0
Dimensions: 1.8'
Magnitude: 12.1
Observations:
C11 at 193x. Small, and very gradually brightens to the middle.
Radial velocity (k/s): +4,498
- 15 -
Zone 120
NGC 5635
Rating: 5 D
Other Names: H III 132; UGC 9283
Position: 1429+2724
Type: Gal
Surface brightness: 13.3
Class: S pec
Dimensions: 2.4' x 1.2'
Magnitude: 12.5
PA: 65
Observations:
C8 at 104x. It offers a tiny, indistinct glow, but no details.
Radial velocity (km/sec): +4,316
Zone 120, Map 3
Double Stars
Easy
STF 1855
Rating: 3 E
ADS 9302; HD 127737
Position: 1433+3138
A
B
Magnitude
9.18
9.89
Separation PA
—
—
15.6 +
248 -
Year
—
1991
Spectra
G0
Colors
Y
O
Notes:
1831: 15.3 @ 249. 20 measurements.
The galaxy NGC 5672 is 1' E of this pair, but too faint for me to detect (13.5 visual
magnitude).
Observations:
C8 at 104x.
- 16 -
Zone 120
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.1 inches.
Separation: AB = 19.5 miles.
Distance (LY): 800
Total luminosity (Suns): 17
h556
Position: 1445+3345
A
B
Magnitude
9.92
10.98
Rating: 3 E
Separation PA
—
—
34.2 +
329 -
Year
—
1991
Spectra
K0
Colors
Y
B
Notes:
1880: 32.0 @ 334. 8 measurements.
Observations:
C11 at 115x. It is flanked by 10m stars.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 27.1 inches.
Separation: AB = 1,739 miles.
Distance (LY): 32,600?
Total luminosity (Suns): 12,300?
h555
Rating: 4 E
SAO 64265
Position: 1441+3354
A
B
Magnitude
10.81
10.98
Separation PA
—
—
16.2 145 =
Year
—
1950
Spectra
G0
Notes:
1907: 16.4 @ 145. 3 measurements.
Observations:
C11 at 115x. Another pair (9.35m, 11.81m, 29" @ 106) is 2 min E.
- 17 -
Colors
yW
W
Zone 120
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.6 inches.
Separation: AB = 1.64 miles.
Distance (LY): 65
Total luminosity (Suns): 0.029
Scheiner 537
Position: 1446+3058
A
B
Magnitude
10.88
11.10
Rating: 4 E
Separation PA
—
—
6.6 307 -
Year
—
1934
Spectra
Colors
W
W
Notes:
1894: 7.3 @ 309. 4 measurements.
Observations:
C11 at 115x.
Distance (LY): 37
Total luminosity (Suns): 0.009
STF 1891
Rating: 4 E
ADS 9435; HD 131763; SAO 64392
Position: 1455+3406
A
B
Magnitude
8.41
10.04
Separation PA
—
—
3.6 =
245 +
Notes:
1832: 3.6 @ 234. 24 measurements.
Observations:
C11 at 115x.
- 18 -
Year
—
1991
Spectra
G0
Colors
W
O
Zone 120
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.3 inches.
Separation: AB = 1.80 miles.
Distance (LY): 321
Total luminosity (Suns): 4.26
h560
Rating: 5 E
ADS B7062; SAO 64404
Position: 1456+3457
A
B
Magnitude
9.69
12.16
Separation PA
—
—
37.1 300 =
Year
—
1926
Spectra
K0
Colors
W
?
Notes:
1908: 37.3 @ 300. 3 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.7 inches.
Separation: AB = 6.71 miles.
Distance (LY): 116
Total luminosity (Suns): 0.11
Moderate
Rho Boo
25 Boo; h2728; ADS 9296; HD 127665; SAO 64202
Position: 1432+3022
A
B
Magnitude
3.57
11.30
Separation PA
—
—
38.4 -! 339 +
Notes:
1879: 53.3 @ 334. 10 measurements.
The primary is an infra-red source.
The stars have different proper motions.
- 19 -
Rating: 5 M
Year
—
1988
Spectra
K3 III
Colors
yG!
?
Zone 120
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 51.3 inches.
Separation: AB = 8.92 miles.
Distance (LY): 149
Total luminosity (Suns): 64.1
h2750
Position: 1451+3114
A
B
Magnitude
10.86
12.50
Rating: 5 M
Separation PA
—
—
10.0
139
Year
—
1909
Spectra
Colors
W
?
Notes:
1 measurement.
Observations:
C11 at 115x.
h559
Rating: 5 M
SAO 64368
Position: 1452+3235
A
B
Magnitude
9.55
12.87
Separation PA
—
—
21.0
11
Year
—
1908
Spectra
K5
Colors
Y
?
Notes:
1 measurement.
Observations:
C11 at 115x. Very nice field. It forms a large triangle with 7m and 9m stars.
- 20 -
Zone 120
Ali 131
Rating: 5 M
SAO 64364
Position: 1452+3453
A
B
Magnitude
9.65
12.70
Separation PA
—
—
9.0
116
Year
—
1933
Spectra
F2
Colors
W
?
Notes:
1 measurement.
Observations:
C11 at 115x. It lies at the W end of a chain of 9m stars.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.8 inches.
Separation: AB = 3.84 miles.
Distance (LY): 274
Total luminosity (Suns): 0.859
Difficult
Kuiper 68
Rating: 5 D
HD 128093; SAO 64221
Position: 1434+3232
A
B
Magnitude
6.32
11.29
Separation PA
—
—
26.0 +
322 -
Year
—
1986
Spectra
F5 V
Colors
W
?
Notes:
1958: 24.7 @ 328. 2 measurements.
May be optical because Hipparcos gives different distances (138 and 27 light years).
Observations:
C8 at 83x.
- 21 -
Zone 120
STF 1867
Rating: 5 D
ADS 9340; HD 129260; SAO 64268
Position: 1441+3117
A
B
Magnitude
8.37
8.92
Separation PA
—
—
0.8 359 -
Year
—
1999
Spectra
F5
Colors
W
B
Notes:
1831: 1.6 @ 22. Over 100 measurements. With STF 1854 and Rho Boo, it forms a
large triangle. Inside this triangle is the Bootes Cluster of Galaxies.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.3 inches.
Separation: AB = 3,168 feet.
Distance (LY): 482
Total luminosity (Suns): 19
OS 289
Rating: 5 D
ADS 9442; HD 132029; SAO 64408
Position: 1456+3218
A
B
Magnitude
6.12
10.35
Separation PA
—
—
4.8 +
112 -
Year
—
2000
Notes:
1846: 4.6 @ 119. 32 measurements.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 2.34 miles.
Distance (LY): 313
Total luminosity (Suns): 29
- 22 -
Spectra
A2 V
Colors
W
?
Zone 120
Deep Sky Objects
Difficult
NGC 5653
Rating: 4 D
Other Names: UGC 9318; H II 330
Position: 1430+3113
Type: Gal
Surface brightness: 12.9
Class: Sb(R)
Dimensions: 1.7' x 1.3'
Magnitude: 12.2
PA: 125
Observations:
C11 at 98x. Small ellipse that brightens very rapidly toward the middle.
Distance (LY): 160,000,000
Total luminosity (Suns): 26,500,000,000
Zone 120, Map 1
Double Stars
Easy
Sigma Boo
28 Boo; OS 582; HD 128167; SAO 83416
Position: 1435+2945
A
B
C
Magnitude
4.46
9.80
11.30
Separation
—
233 237
Rating: 4 E
PA
—
83 +
97
Notes:
AB 1852: 247.9 @ 82. 5 measurements.
AC 1 measurement.
The primary may be a Delta Sct variable.
- 23 -
Year
—
1924
1907
Spectra
F3 Vv
Colors
W
?
?
Zone 120
Observations:
C8 at 206x. BC make a nice pair on their own!
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.80 inches.
Separation: AB = 18.2 miles; AC = 18.5 miles.
Distance (LY): 50
Total luminosity (Suns): 3.14
h5487
Position: 1443+2847
A
B
Magnitude
10.98
11.74
Rating: 4 E
Separation PA
—
—
19.5 237 +
Year
—
1991
Spectra
Colors
W
?
Notes:
1902: 19.9 @ 232. 4 measurements.
Observations:
C11 at 115x.
STF 1893
Rating: 4 E
ADS 9444; HD 132049; SAO 83588
Position: 1456+2929
A
B
Magnitude
9.28
11.18
Separation PA
—
—
21.4 214 -
Year
—
1991
Notes:
1832: 21.6 @ 261. 27 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.2 inches.
Separation: AB = 18.9 miles.
Distance (LY): 326
Total luminosity (Suns): 2.4
- 24 -
Spectra
F8
Colors
W
B!
Zone 120
h2730
Position: 1433+2526
A
B
Magnitude
11.39
12.87
Rating: 5 E
Separation PA
—
—
26.9
303
Year
—
1907
Spectra
Colors
yO
W?
Notes:
1 measurement.
Observations:
C11 at 115x.
A. G. 346
Position: 1449+2628
A
B
Magnitude
9.80
10.10
Rating: 5 E
Separation PA
—
—
9.4 =
336 +
Year
—
1914
Spectra
F5
Colors
W
bW
Notes:
1904: 9.4 @ 335. 2 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.4 inches.
Separation: AB = 22.7 miles.
Distance (LY): 1,550
Total luminosity (Suns): 40
h5489
Rating: 5 E
HD 130917; SAO 83551
Position: 1450+2837
A
B
Magnitude
5.80
12.90
Separation PA
—
—
111.2 22 -
- 25 -
Year
—
1959
Spectra
A4 V
Colors
W
?
Zone 120
Notes:
1878: 112.6 @ 23. 3 measurements.
Star A is a spectroscopic binary.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.80 inches.
Separation: AB = 51.2 miles.
Distance (LY): 295
Total luminosity (Suns): 33.4
Moderate
Epsilon Boo
Rating: 4 M
36 Boo; Mirak, "girdle", Izar, "the girdle", Pulcherrima; STF 1877; ADS 9372; SAO
83500
Position: 1445+2704
A
B
C
Magnitude
2.34
4.54
12.00
Separation
—
2.6 176.5 -
PA
—
341 +
256 -
Year
—
1998
1988
Spectra
K0 III
A2 V
Colors
Y
B
?
Notes:
AB 1822: 2.7 @ 318. Over 100 measurements.
AC 1912: 178.7 @ 257. 3 measurements.
Star B is a spectroscopic binary.
The stars share common proper motion.
From James Kaler's Star Notes:
This star's claim to fame is that it is one of the finest double stars in the sky. It
consists of a third magnitude orange bright giant only three seconds of arc from a fifth
magnitude white class A main sequence dwarf. The color contrast, enhanced by the stars'
proximity to each other, is so striking that the discoverer (F. G. W. Struve) called the pair
"Pulcherima" for "the most beautiful."
The A dwarf's 8,700 Kelvin temperature show it to be about twice the size of the Sun,
while the cooler 4,500 Kelvin giant is 33 times as large. In the 170 years since discovery,
the stars have completed less than three percent of their orbit. Separated by a distance of
at least 185 AU, the period is well over 1,000 years long.
- 26 -
Zone 120
The pair wonderfully presents a chapter in the story of stellar evolution. The A star is
about double the solar mass, the K star closer to quadruple. Class K giants by their
natures are evolved, fusing helium to carbon in their cores instead of hydrogen to helium
(as does the class A dwarf). More massive stars use their fuel and evolve first. We know
how rapidly stars age. The pair was born some 300 million years ago as the white A star
we see now and a hotter, bluer, and brighter mid class B star. Ten or 20 million years ago,
the brighter star's central hydrogen fuel supply ran out and now it is a bright giant with
little time left to it. In a little over a billion years, the same thing will happen to the
smaller star, and it will become a lesser orange giant. By that time, the bigger star will
have ejected almost all of its outer envelope leaving not much more than the old core,
which will appear as a dim dense "white dwarf" about the size of Earth that will nearly be
lost in the orange glow of the giant-to-be (which will someday become a lesser white
dwarf itself).
Observations:
C8 at 206x. The glare is awful! Use a diffraction mask if you want to see the
companions.
Webb saw them as Y!, B!. Van Biesbroeck saw them as Y and G; Secchi says Y!, B!.
William Herschel said R and pL while his son said Y and bG; Struve himself called them
Y and G. Smythe saw them as pO and pG. Flammarion said Y and dB. Olcott saw them
as O and G.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 99.0 inches; B = 8.40 inches.
Separation: AB = 4,488 feet; AC = 57.8 miles.
Distance (LY): 210
Total luminosity (Suns): 427
h2745
Rating: 5 M
HD 130066; SAO 83505
Position: 1445+2911
A
B
Magnitude
9.74
13.93
Separation PA
—
—
13.7 125 +
Notes:
1908: 17.0 @ 120. 2 measurements.
Observations:
C11 at 115x.
- 27 -
Year
—
1991
Spectra
G5
Colors
Y
O?
Zone 120
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 21.4 inches.
Separation: AB = 39.3 miles.
Distance (LY): 1,840
Total luminosity (Suns): 34
Deep Sky Objects
Difficult
NGC 5798
Rating: 4 D
Other Names: UGC 9628; H III 131
Position: 1458+2958
Type: Gal
Surface brightness: 13.3
Class: Ir Bar
Dimensions: 84" x 54"
Magnitude: 13.1
PA: 42
Observations:
C11 at 98x. Sizeable patch with a very gradually brighter middle.
Radial velocity (k/s): +1,788
- 28 -
Zone 120
Zone 120 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
STF 1812
1413+2843
3E
2
STF 1818
1414+3356
3E
1
STF 1850
1429+2818
3E
2
STF 1855
1433+3138
3E
3
h556
1445+3345
3E
3
OS 274
1407+3447
4E
1
Hertzsprung 10
1416+3235
4E
1
h549
1424+2959
4E
2
STF 1854 rej
1430+3148
4E
1
Sigma Boo
1435+2945
4E
4
h555
1441+3354
4E
3
h5487
1443+2847
4E
4
Scheiner 537
1446+3058
4E
3
STF 1891
1455+3406
4E
3
STF 1893
1456+2929
4E
4
h2715
1424+2621
5E
2
h2730
1433+2526
5E
4
A. G. 346
1449+2628
5E
4
h5489
1450+2837
5E
4
h560
1456+3457
5E
3
STF 1808
1410+2636
3M
2
STF 1810
1412+2802
4M
2
Component
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
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
- 29 -
Mag
7.81
9.78
11.80
8.71
10.22
7.12
7.62
9.18
9.89
9.92
10.98
7.02
10.42
9.55
10.00
8.16
11.94
6.06
11.34
4.46
9.80
11.30
10.81
10.98
10.98
11.74
10.88
11.10
8.41
10.04
9.28
11.18
11.71
13.40
11.39
12.87
9.80
10.10
5.80
12.90
9.69
12.16
8.33
9.70
11.90
9.03
9.76
Separation
—
14.2 =
72.5 —
5.5 =
—
25.7 =
—
15.6 +
—
34.2 +
—
12.8 —
92.9 +!!
—
30.9 +
—
26.3 =
—
233 237
—
16.2 —
19.5 —
6.6 —
3.6 =
—
21.4 —
11.8
—
26.9
—
9.4 =
—
111.2 —
37.1 —
2.6 59.2 +
—
2.3 +
PA
—
109 +
72.5 —
330 +
—
262 =
—
248 —
329 —
55 —
1—
137 =
—
255 —
83 +
237
—
145 =
—
237 +
—
307 —
245 +
—
214 —
342
—
303
—
336 +
—
22 —
300 =
—
81 +
59.2 +
—
183 +
Zone 120
Designation
Position
Rating
Map
Epsilon Boo
1445+2704
4M
4
h2704
1413+3135
5M
1
Rho Boo
1432+3022
5M
3
h2745
1445+2911
5M
4
h2750
1451+3114
5M
3
Ali 131
1452+3453
5M
3
h559
1452+3235
5M
3
STF 1816
1414+2906
3D
2
h544
1418+2823
5D
2
Kuiper 68
1434+3232
5D
3
STF 1867
1441+3117
5D
3
OS 289
1456+3218
5D
3
Component
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
Mag
2.34
4.54
12.00
8.23
12.99
3.57
11.30
9.74
13.93
10.86
12.50
9.65
12.70
9.55
12.87
7.46
7.79
10.06
12.50
6.32
11.29
8.37
8.92
6.12
10.35
Separation
—
2.6 176.5 —
44.3 +
—
38.4 -!
—
13.7 —
10.0
—
9.0
—
21.0
—
0.6 —
8.4 —
26.0 +
—
0.8 —
4.8 +
PA
—
341 +
176.5 —
354 +
—
339 +
—
125 +
—
139
—
116
—
11
—
91 +
—
326 +
—
322 —
359 —
112 -
Deep Sky Objects
Object
NGC 5523
NGC 5548
NGC 5611
NGC 5614
NGC 5623
NGC 5653
NGC 5798
NGC 5440
NGC 5466
NGC 5629
NGC 5635
Position
1415+2519
1418+2508
1424+3303
1424+3452
1427+3314
1430+3113
1458+2958
1403+3446
1406+2832
1428+2551
1429+2724
Rating
5M
5M
4D
4D
4D
4D
4D
5D
5D
5D
5D
Map
2
2
1
1
1
3
4
1
2
2
2
Specifications
Surface
Type
Mag
Br
Gal (SA(s)cd: II-III)
12.1
13.8
Gal ((R')SA(s)0/a)
12.6
13.3
Gal (S0)
12.6
12.3
Gal (SA(r)ab pec)
12.5
13.3
Gal (E)
12.5
13.0
Gal (Sb(R))
12.2
12.9
Gal (Ir Bar)
13.1
13.3
Gal (Sa)
12.3
13.7
Gc (12)
9.1
Gal (S0)
12.1
13.2
Gal (S pec)
12.5
13.3
- 30 -
Population