Zone 97, Master Map
Normal View
Zone Master, Normal View, 10 deg FOV
+44°00'
φ
+42°00'
c
χ
ν2
ν1
Hercules
β Nekkar
φ
Bootes
+40°00'
e
Corona Borealis
f
λ
+38°00'
µ
d
τ
+36°00'
µ1 Alkalurops
µ2
ζ2
ζ1
κ
16h 00m
15h 48m
15h 36m
15h 24m
15h 12m
15h 00m
Zone 97, Map 1
Normal Image
+45°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h2768
Espin 2649
h2788
+44°00'
h2772
STF 1896
OS 296
Bur 1449
STF 1934
+43°00'
STF 1961
Kustner 108
NGC 5899
h2773
ν2
h1260
ν1
Beta Booβ
Kazeza 93
Nekkar
h1264
STF 1895
Kazeza 95
15h 30m
15h 24m
15h 18m
15h 12m
15h 06m
15h 00m
+41°00'
+42°00'
h1274
Zone 97, Map 1
Mirror Image
h2768
Espin 2649
h2788
+45°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+44°00'
h2772
STF 1896
OS 296
Bur 1449
+43°00'
STF 1934
Kustner 108
+42°00'
h1274
NGC 5899
ν1
h1264
β
+41°00'
h2773
h1260
ν2
Nekkar
Kazeza 93
Beta Boo
STF 1895
Kazeza 95
15h 00m
15h 06m
15h 12m
15h 18m
15h 24m
15h 30m
Zone 97, Map 2
Normal Image
STF 1895
+40°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Kazeza 95
+39°00'
STF 1946
STF 1916
STF 1921
h2786
STF 1947
+38°00'
STF 1926
h567
Mu 1 Boo
+37°00'
µ1 Alkalurops
µ2 Mu 2 Boo
+36°00'
h250
h251
h562
15h 30m
15h 24m
15h 18m
15h 12m
15h 06m
15h 00m
Zone 97, Map 2
Mirror Image
+40°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1895
Kazeza 95
STF 1946
+39°00'
Corona Borealis
STF 1916
STF 1921
h2786
STF 1947
+38°00'
STF 1926
h567
Mu 1 Boo
+37°00'
µ1 Alkalurops
Mu 2 Boo
µ2
+36°00'
h250
h251
h243
h562
h560
15h 00m
15h 06m
15h 12m
15h 18m
15h 24m
15h 30m
Zone 97, Map 3
Normal Image
h2788
OS 296
Bur 1449
+44°00'
+45°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Espin 1556
Kustner 108
+43°00'
STF 1961
STF 1982
Chi Her
OS 301
h1274
STF 2001
+42°00'
χ
+41°00'
STF 1991
Kazeza 107
NGC 5993
ν2
NGC 6058
ν1
h573
φ
Hercules
A G 200
16h 00m
Kazeza 93
Bootes
OS 298
NGC 5966
15h 54m
15h 48m
15h 42m
15h 36m
Kazeza 95
15h 30m
Zone 97, Map 3
Mirror Image
+45°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+44°00'
h2788
OS 296
Bur 1449
Espin 1556
+43°00'
STF 1961
Kustner 108
STF 1982
χ
OS 301
Chi Her
+42°00'
h1274
STF 2001
+41°00'
STF 1991
Kazeza 107
NGC 5993
ν1
ν2
h573
Kazeza 93
φ
Hercules
Bootes
Kazeza 95
15h 30m
OS 298
NGC 5966
15h 36m
15h 42m
15h 48m
15h 54m
16h 00m
A G 200
Zone 97, Map 4
Normal Image
Hercules
+40°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Bootes
OS 298
NGC 5966
A. G. 200
Kazeza 95
+39°00'
Corona Borealis
OS 304
µ
h2786
+38°00'
λ
STF 1947
Lambda CrB
+37°00'
h579
h580
STF 1973
STF 1964
h258
κ
h577
16h 00m
Zeta 2 CrB
+36°00'
ζ2
ζ1
Kappa CrB
STF 1983
15h 54m
h572
15h 48m
15h 42m
15h 36m
15h 30m
Zone 97, Map 4
Mirror Image
+40°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Hercules
Bootes
Kazeza 95
OS 298
NGC 5966
A. G. 200
STF 1946
+39°00'
Corona Borealis
OS 304
µ
h2786
λ
+38°00'
STF 1947
Lambda CrB
h580
Zeta 2 CrB
STF 1973
STF 1964
h258
κ
15h 36m
15h 42m
Kappa CrB
STF 1983
h572
15h 30m
+36°00'
ζ2
ζ1
+37°00'
h579
15h 48m
15h 54m
h577
16h 00m
Zone 97
Index
2 Reference Stars, 38 Double Stars, 3 Galaxies
B
M
Beta Boo ................................................ 2
Bur 1449 ................................................ 5
Mu 1 Boo ............................................... 9
Mu 2 Boo ............................................. 13
C
N
Chi Her ................................................ 14
NGC 5899 .............................................. 7
NGC 5966 ............................................ 25
NGC 5993 ............................................ 18
H
h1274 ..................................................... 4
h250 ..................................................... 11
h251 ..................................................... 12
h258 ..................................................... 22
h2772 ..................................................... 6
h2773 ..................................................... 5
h2786 ................................................... 21
h2788 ................................................... 14
h562 ..................................................... 11
h567 ..................................................... 12
h572 ..................................................... 24
h573 ..................................................... 15
h577 ..................................................... 21
O
OS 296 ................................................... 6
OS 298 ................................................. 19
OS 301 ................................................. 18
S
STF 1916................................................ 8
STF 1921................................................ 8
STF 1926.............................................. 13
STF 1934................................................ 3
STF 1946.............................................. 10
STF 1947.............................................. 10
STF 1961.............................................. 16
STF 1964.............................................. 23
STF 1973.............................................. 20
STF 1982.............................................. 15
STF 1983.............................................. 25
STF 1991.............................................. 16
K
Kappa CrB ........................................... 23
Kazeza 107 .......................................... 17
Kazeza 93 ............................................ 17
Kazeza 95 ............................................ 24
Kustner 108............................................ 3
Z
L
Zeta 2 CrB............................................ 20
Lambda CrB ........................................ 22
-1-
Zone 97
Zone 97, Map 1
Reference Star
Beta Boo (42 Boo; Nekkar; the Arabic name for the entire constellation; HD
133208; SAO 45337)
Position: 1502+4023
Mag : 3.49
Spectrum : G8 III Color : yW
Assumed distance: 219 light years
Assumed luminosity (suns): 190
Notes:
This star is an infra-red source.
From James Kaler's Star Notes:
An eponymous star, one whose very name says it all, Nekkar comes simply and
directly from an Arabic phrase meaning "the Ox Driver." Nekkar is a bit of a curiosity for
other reasons as well.
A standard class G giant (one actually used as a spectral standard for class G8) with a
surface temperature of 4,950 Kelvin, it is a bit cooler than the Sun. We deduce true giant
status, a diameter 19 times solar. Nekkar is observed to be an X-ray source, and though a
slow rotator (taking about 3/4 of a year for one leisurely spin), it displays activity similar
to that seen on the Sun. While observing Nekkar in August of 1993, the Rosat X-ray
satellite detected the star to pop a large 10-minute X-ray flare many times the strength of
a typical bright solar flare (which produces an intense patch of brightness on the solar
surface), indicating a collapse of a magnetic field loop (one generated by rotation).
Nekkar is the first known single cool giant star to display such activity.
But is it single? Nekkar is also classed as a marginal "barium star," one enriched in
barium and other elements. Such stars (like Alphard) are usually thought to be
contaminated by companions that once fed them nuclear- enriched matter and are now
dead white dwarfs. Yet there is no indication that such a companion exists. Nekkar's
luminosity and temperature suggest a mass a bit over 3 times that of the Sun and an age
of perhaps 350 million years. Once a blue class B dwarf, Nekkar seems about ready to
become a much larger and brighter red giant, as its dead helium core prepares to fire up
and fuse itself to carbon and oxygen.
-2-
Zone 97
Double Stars
Easy
STF 1934
ADS 9573; HD 136136; SAO 45471
Rating: 3 E
Position: 1517+4348
A
B
C
Magnitude
8.72
8.88
9.60
Separation
—
9.4 +
140.6 -
PA
—
15 218 =
Year
—
1997
1921
Spectra
G5
G5
Colors
B
O
No
Notes:
AB 1830: 5.3 @ 45. Over 100 measurements. The stars have different proper
motions.
AC 1903: 141.4 @ 218. 4 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.2 inches; B = 20.4 inches.
Separation: AB = 13.3 miles; AC = 200 miles.
Distance (LY): 910
Total luminosity (Suns): 31
Kustner 108
HD 138004; SAO 45551
Rating: 3 E
Position: 1528+4253
A
B
Magnitude
7.48
9.77
Separation PA
—
—
40.4 +
319 +
-3-
Year
—
1991
Spectra
G5
Colors
W
pB?
Zone 97
Notes:
1893: 39.3 @ 317. 11 measurements.
The stars share a large common proper motion.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.7 inches.
Separation: AB = 6.61 miles.
Distance (LY): 105
Total luminosity (Suns): 0.96
h1274
ADS 9669; SAO 45560
Rating: 3 E
Position: 1529+4215
A
B
Magnitude
10.52
10.80
Separation PA
—
—
7.0 +
310 =
Year
—
1969
Notes:
1908: 6.8 @ 310. 3 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.2 inches.
Separation: AB = 18.8 miles.
Distance (LY): 1,720
Total luminosity (Suns): 25
-4-
Spectra
F8
Colors
W
W
Zone 97
h2773
B 7205; HD 136008; SAO 45465
Rating: 4 E
Position: 1517+4124
A
B
Magnitude
9.60
11.09
Separation PA
—
—
28.4 145 =
Year
—
1991
Spectra
F8
Colors
W
Y
Notes:
1893: 28.9 @ 145. 6 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.4 inches.
Separation: AB = 8.68 miles.
Distance (LY): 196
Total luminosity (Suns): 0.5
Bur 1449
SAO 45543
Rating: 5 E
Position: 1527+4351
A
B
Magnitude
9.60
10.06
Separation PA
—
—
157.0
48
Year
—
1911
Spectra
G0
Notes:
1 measurement.
Observations:
C11 at 115x. Without a list, you'd never suspect it was a double star!
-5-
Colors
W
W
Zone 97
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.5 inches.
Separation: AB = 55.9 miles.
Distance (LY): 228
Total luminosity (Suns): 0.972
Moderate
h2772
ADS 9561; SAO 45452
Rating: 5 M
Position: 1516+4451
A
B
Magnitude
9.31
12.40
Separation PA
—
—
9.0 =
316 =
Year
—
1986
Spectra
Colors
W
?
Notes:
1903: 9.0 @ 316. 2 measurements.
Observations:
C11 at 115x.
Distance (LY): 840
Total luminosity (Suns): 11
Difficult
OS 296
ADS 9639; HD 137805; SAO 45541
Position: 1526+4400
A
B
C
Magnitude
7.49
9.20
12.36
Separation
—
1.9 +
77.8 +!
PA
—
284 312 -
Notes:
AB 1843: 1.6 @ 323. Over 100 measurements.
AC 1911: 67.30 @ 316. 8 measurements.
-6-
Year
—
1998
1998
Spectra
G5
Colors
O
W
?
Zone 97
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.8 inches.
Separation: AB = 4,541 feet; AC = 35.5 miles.
Distance (LY): 293
Total luminosity (Suns): 8.3
Deep Sky Objects
Difficult
NGC 5899
Other Names: UGC 9789; H II 650
Astronomical League Program: Herschel II Club
Rating: 4 D
Position: 1515+4203
Type : Gal
Surface brightness: 12.7
Class: SAB(rs)c II
Dimensions: 2.3' x 0.6'
Magnitude : 12.4
PA: 18
Observations:
C8 at 65x. Prominent nucleus, but little else. Its axis runs N to S and it is mottled at
high power.
C11 at 193x. It is a very faint patch with a nearly stellar center.
The field is rife with skymarks— a 10m star 4 min WSW; the yO SAO 45445 (6.2m
M2III, 186 times brighter than the Sun and 820 light years away) 9 min NW; and a bW
star 50 min N of SAO 45445.
Radial velocity (km/sec): +2,706
-7-
Zone 97
Zone 97, Map 2
Double Stars
Easy
STF 1916
ADS 9527; HD 134679; SAO 64528
Rating: 3 E
Position: 1510+3859
A
B
Magnitude
8.18
10.33
Separation PA
—
—
9.8 331 +
Year
—
1991
Spectra
F8 V
Colors
Y
R
Notes:
1829: 10.0 @ 330. 16 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.60 inches.
Separation: AB = 3.11 miles.
Distance (LY): 204
Total luminosity (Suns): 1.9
STF 1921
HD 135077; SAO 64551
Rating: 3 E
Position: 1512+3840
A
B
Magnitude
8.52
8.71
Separation PA
—
—
30.8 +
282 -
-8-
Year
—
1999
Spectra
A2
A2
Colors
W
W
Zone 97
Notes:
1830: 30.3 @ 284. 31 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars exhibit common proper
motion.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.20 inches; B = 7.37 inches.
Separation: AB = 23.0 miles.
Distance (LY): 478
Total luminosity (Suns): 13
Mu 1 Boo
Rating: 4 E
51 Boo; Alkalurops; SII 28; ADS 9626; HD 137391; SAO 64686
Astronomical League Program: Double Star Club
Position: 1524+3723
A
B
Magnitude
4.31
6.51
Separation PA
—
—
109.1 +
171 -
Year
—
1996
Spectra
F0 V
Colors
Y
O
Notes:
1834: 108.5 @ 172. 65 measurements.
The orbital period is 260.2 years (Baize, 1952).
Star A is a spectroscopic binary with a 298.75 day period. It may also be a Delta Sct
variable.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.70 inches.
Separation: AB = 20.8 miles; AC = 23.4 miles.
Distance (LY): 122
Total luminosity (Suns): 25
-9-
Zone 97
STF 1946
SAO 64711
Rating: 4 E
Position: 1527+3930
A
B
Magnitude
9.10
10.90
Separation PA
—
—
7.5 +
344 -
Year
—
1991
Spectra
F5
Colors
W
B
Notes:
1830: 7.4 @ 346. 14 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.9 inches.
Separation: AB = 6.78 miles.
Distance (LY): 580
Total luminosity (Suns): 7.17
STF 1947
ADS 9663; SAO 64715
Rating: 4 E
Position: 1528+3822
A
B
Magnitude
9.29
9.63
Separation PA
—
—
6.8 =
26 -
Notes:
1831: 6.8 @ 28. 26 measurements.
Observations:
C11 at 115x.
- 10 -
Year
—
1991
Spectra
K0
Colors
Y
W
Zone 97
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.2 inches.
Separation: AB = 2.53 miles.
Distance (LY): 239
Total luminosity (Suns): 1.49
h250
B 7163; SAO 64555
Rating: 5 E
Position: 1512+3621
A
B
Magnitude
9.65
12.10
Separation PA
—
—
22.4
126
Year
—
1912
Spectra
Colors
W
?
Notes:
1 measurement.
Observations:
C8 at 104x.
Distance (LY): 281
Total luminosity (Suns): 0.9
Moderate
h562
HD 132753; SAO 64450
Rating: 4 M
Position: 1500+3506
A
B
Magnitude
7.75
12.12
Separation PA
—
—
25.1 +
308 =
Year
—
1991
Notes:
1905: 24.4 @ 308. 7 measurements.
Hipparcos shows both stars to be at the same distance.
- 11 -
Spectra
G5
Colors
yW
?
Zone 97
Observations:
C8 at 83x. Nice area.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.1 inches.
Separation: AB = 66.6 miles.
Distance (LY): 1,700
Total luminosity (Suns): 203
h567
HD 134712; SAO 64530
Rating: 5 M
Position: 1510+3741
A
B
Magnitude
8.86
12.00
Separation PA
—
—
10.7
154
Year
—
1925
Spectra
A2
Colors
W
?
Notes:
1 measurement.
Observations:
C8 at 206x. Use averted vision for B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.43 inches.
Separation: AB = 12.4 miles.
Distance (LY): 740
Total luminosity (Suns): 11
h251
B 7230
Rating: 5 M
Position: 1520+3558
A
B
Magnitude
11.81
12.54
Separation PA
—
—
20.0
240
- 12 -
Year
—
1820
Spectra
Colors
W
W
Zone 97
Notes:
1 measurement.
Observations:
C8 at 104x.
Difficult
Mu 2 Boo
51 Boo; STF 1938; ADS 9626; HD 137392; SAO 64687
Position: 1525+3721
A
B
Magnitude
6.51
7.60
Separation PA
—
—
2.0 +- 12 +
Year
—
1989
Rating: 2 D
Spectra
G1 V
Colors
W
W
Notes:
First measure: 1.4 @ 327. The orbit takes 260.1 years (Baize, 1952).
Observations:
C8 at 206x. Some observers report colors of bW, R and R. Webb saw a G primary.
Distance (LY): 122
Total luminosity (Suns): 4
STF 1926
ADS 9553; HD 135631; SAO 64585
Position: 1515+3818
A
B
Magnitude
7.11
8.81
Rating: 3 D
Separation PA
—
—
0.4 232 -
Year
—
1996
Notes:
1830: 1.6 @ 261. 85 measurements.
Observations:
C11 at 634x. On this night, I only got an oval.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.70 inches.
Separation: AB = 1,320 feet.
Distance (LY): 413
Total luminosity (Suns): 23
- 13 -
Spectra
F1 V
Colors
W
W
Zone 97
Zone 97, Map 3
Reference Star
Chi Her (1 Her; HD 142373; SAO 45772)
Position: 1553+4227
Mag : 4.59
Spectrum : F9 V Color : W
Assumed distance: 52 light years
Assumed luminosity (suns): 3.06
Notes:
This stars ratio of Lithium to Hydrogen is 12 times that of the Sun.
Double Stars
Easy
h2788
HD 139116; SAO 45617
Rating: 3 E
Position: 1535+4454
A
B
Magnitude
8.39
8.48
Separation PA
—
—
49.0 -! 302 -
Year
—
1991
Spectra
K0
K0
Colors
W
W
Notes:
1893: 59.0 @ 305. 11 measurements.
Hipparcos/Tycho mission data show different distances for these stars (990 and 489
light years); they may be optical.
Observations:
C8 at 83x.
- 14 -
Zone 97
STF 1982
ADS 9804; HD 141892; SAO 45751
Rating: 3 E
Position: 1550+4247
A
B
Magnitude
9.24
9.42
Separation PA
—
—
4.7 =
299 -
Year
—
1998
Spectra
F8
Colors
W
W
Notes:
1831: 4.7 @ 301. 29 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.1 inches.
Separation: AB = 11.7 miles.
Distance (LY): 1,590
Total luminosity (Suns): 74
h573
Rating: 4 E
Position: 1549+4037
A
B
Magnitude
10.92
12.03
Separation PA
—
—
14.5 +
53 -
Year
—
1991
Notes:
1894: 13.6 @ 62. 5 measurements.
Observations:
C11 at 115x.
Distance (LY): 2,170
Total luminosity (Suns): 21.5
- 15 -
Spectra
Colors
W
bW
Zone 97
Moderate
STF 1991
ADS 9861; HD 143208; SAO 45802
Rating: 3 M
Position: 1557+4140
A
B
C
Magnitude
9.03
10.04
9.20
Separation
—
3.1 =
94.6 -
PA
—
196 88 +
Year
—
1991
1988
Spectra
F5
Colors
W
No
W
Notes:
AB 1831: 3.1 @ 202. 27 measurements.
AC 1881: 94.9 @ 87. 3 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.9 inches.
Separation: AB = 2.15 miles; AC = 65.6 miles.
Distance (LY): 445
Total luminosity (Suns): 7
STF 1961
Rating: 4 M
Position: 1535+4331
A
B
C
Magnitude
10.07
10.17
12.40
Separation
—
27.2 +
45.0 -
PA
—
23 -!
300 -!
Notes:
AB 1830: 21.6 @ 56. 23 measurements.
AC 1910: 55.0 @ 328. 2 measurements.
- 16 -
Year
—
1991
1923
Spectra
K2
Colors
W
W
W?
Zone 97
Observations:
C8 at 104x. Faint. C was extremely difficult.
Kazeza 93
SAO 45583
Rating: 5 M
Position: 1531+4022
A
B
C
D
Magnitude
9.71
10.93
11.76
11.00
Separation
—
40.3 +
51.4
71.0
PA
—
357 =
92
19
Year
—
1991
1984
1984
Spectra
Colors
yW
B
?
No
Notes:
1893: 38.7 @ 357. 7 measurements.
AC and AD, 1 measurement.
Observations:
C11 at 115x. D was not seen.
Distance (LY): 53
Total luminosity (Suns): 0.051
Kazeza 107
SAO 45649
Rating: 5 M
Position: 1539+4112
A
B
Magnitude
9.90
11.52
Separation PA
—
—
29
326
Year
—
1984
Notes:
1 measurement.
Observations:
C11 at 115x.
Distance (LY): 1,090
Total luminosity (Suns): 12.5
- 17 -
Spectra
Colors
W
?
Zone 97
Difficult
OS 301
ADS 9782; HD 141204; SAO 45718
Rating: 5 D
Position: 1546+4228
A
B
Magnitude
7.35
11.00
Separation PA
—
—
3.9 +
29 -
Year
—
1991
Spectra
K0
Colors
Y
?
Notes:
1843: 3.7 @ 36. 13 measurements.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 23.3 inches.
Separation: AB = 5.78 miles.
Distance (LY): 950
Total luminosity (Suns): 80
Deep Sky Objects
Difficult
NGC 5993
Other Names: UGC 10007; H III 636
Rating: 5 D
Position: 1545+4107
Type : Gal
Surface brightness: 13.0
Class: SB(r)b:
Dimensions: 1.2' x 0.9'
Magnitude : 13.1
PA: 140
Observations:
C11 at 193x. It showed a small nucleus (~10") and a very dim halo.
Radial velocity (km/sec): +9,565
- 18 -
Zone 97
Zone 97, Map 4
Double Stars
Easy
OS 298
ADS 9716; HD 139323; SAO 64800
Rating: 5 D
Position: 1536+3948
A
B
C
D
E
Magnitude
6.78
7.72
7.65
11.70
Separation
—
0.4 121.8 189.3 463.1 +!!
PA
—
151 328 =
232 334 +
Year
—
1999
1991
1934
1984
Spectra
K2 V
K3 V
Colors
W
W
No
No
No
Notes:
AB 1843: 1.1 @ 179. Over 100 measurements. Orbital period of 55.6 years, with
semi-major axis of 0.80", motion direct.
AC 1867: 122.30 @ 328. 35 measurements. C is physical.
AD 1888: 203.3 @ 236. 1934: 189.3 @ 232. 2 measurements.
AE 1921: 356.4 @ 333. 1984: 463.1 @ 334. 3 measurements.
Observations:
C8 at 280x. Snowman. The faint galaxy NGC 5966 (13.6 m) lies 3 min SW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 2.10 inches; C = 31.0 inches.
Separation: AB = 211 feet; AC = 13.5 miles; AD = 21.0 miles; AE = 51.3 miles.
Distance (LY): 71
Total luminosity (Suns): 1.11
- 19 -
Zone 97
Zeta 2 CrB
7 CrB; STF 1965; ADS 9737; HD 139892; SAO 64834
Astronomical League Program: Double Star Club
Rating: 1 E
Position: 1539+3638
A
B
Magnitude
4.64
5.60
Separation PA
—
—
6.1 +
305 +
Year
—
1998
Spectra
B7 V
B9 V
Colors
W
W
Notes:
1822: 5.9 @ 300. Over 100 measurements. B is a Zeta 1 CrB.Star A is a
spectroscopic binary (actually, a triple) with a 12.5842 day period. The stars share
common proper motion.
Observations:
C8 at 104x. Very, very beautiful!
Distance (LY): 473
Total luminosity (Suns): 344
STF 1973
HD 141186; SAO 64893
Rating: 3 E
Position: 1546+3627
A
B
Magnitude
7.56
8.77
Separation PA
—
—
30.7 +
321 -
Year
—
1997
Spectra
F5
G0
Colors
Y
V
Notes:
1829: 30.6 @ 323. 25 measurements. The stars share common proper motion.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.7 inches; B = 17.7 inches.
Separation: AB = 12.6 miles.
Distance (LY): 263
Total luminosity (Suns): 6.6
- 20 -
Zone 97
h577
ADS 9856; HD 143062; SAO 64983
Rating: 3 E
Position: 1557+3530
A
B
Magnitude
8.93
9.97
Separation PA
—
—
9.4 +
13 -
Year
—
1991
Spectra
K0
Colors
O
B
Notes:
1873: 9.3 @ 15. 22 measurements.
Observations:
C11 at 115x. Nice color contrast.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 25.7 inches.
Separation: AB = 4.50 miles.
Distance (LY): 307
Total luminosity (Suns): 2.73
h2786
HD 138853; SAO 64774
Rating: 4 E
Position: 1533+3828
A
B
Magnitude
8.68
11.84
Separation PA
—
—
23.7 168 +
Year
—
1912
Notes:
1905: 24.5 @ 167. 2 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.2 inches.
Separation: AB = 15.9 miles.
Distance (LY): 430
Total luminosity (Suns): 5.27
- 21 -
Spectra
G5
Colors
W
?
Zone 97
Lambda CrB
12 CrB; HD 142908; SAO 64674; H VI 94
Rating: 4 E
Position: 1556+3757
A
B
Magnitude
5.43
11.38
Separation PA
—
—
90.8 67 +
Year
—
1989
Spectra
F0 IV
Colors
W
pB
Notes:
1879: 98.3 @ 64. 10 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 19.1 miles.
Distance (LY): 135
Total luminosity (Suns): 9.94
h258
B 7451; SAO 64984
Rating: 4 E
Position: 1557+3613
A
B
Magnitude
9.61
10.80
Separation PA
—
—
16.7 +
254 -
Notes:
1873: 16.2 @ 256. 5 measurements.
Observations:
C8 at 104x.
- 22 -
Year
—
1912
Spectra
Colors
W
dB
Zone 97
Kappa CrB
11 CrB; Bpm 163; HD 142091; SAO 64948
Rating: 5 E
Position: 1551+3539
A
B
Magnitude
4.79
13.40
Separation PA
—
—
134.7 203 +
Year
—
1925
Spectra
K0 III
Colors
O
?
Notes:
1909: 139.7 @ 202. 2 measurements.
The primary is an infra-red source.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 46.2 inches.
Separation: AB = 21.4 miles.
Distance (LY): 102
Total luminosity (Suns): 9.92
Moderate
STF 1964
Hussey 1167 (B); ADS 9731; HD 139691; SAO 64821
Rating: 4 M
Position: 1538+3615
A
B
C
D
Magnitude
7.10
9.27
7.60
9.86
Separation
—
1.3 +
15.2 16.4 +
PA
—
80 86 =
81 +
Year
—
1995
1994
1994
Spectra
F5
F5
Colors
W
W
Y
W
Notes:
AB 1905: 0.9 @ 89. 16 measurements.
AC 1829: 15.3 @ 86. 40 measurements. The stars share common proper motion.
AD 1900: 15.6 @ 80. 4 measurements.
- 23 -
Zone 97
Observations:
C8 at 697x Webb thought that A was Y.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.3 inches; B = 14.0 inches.
Separation: AB = 3,062 feet; AC = 6.78 miles; AD = 7.31 miles.
Distance (LY): 286
Total luminosity (Suns): 22.3
Kazeza 95
HD 138594; SAO 64758
Rating: 5 M
Position: 1532+3941
A
B
Magnitude
7.70
11.34
Separation PA
—
—
39
138
Year
—
1984
Spectra
K0
Colors
Y
?
Notes:
1 measurement.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 23.8 inches.
Separation: AB = 13.1 miles.
Distance (LY): 216
Total luminosity (Suns): 3.14
h572
ADS B7379; SAO 64872
Rating: 5 M
Position: 1544+3526
A
B
Magnitude
8.78
12.58
Separation PA
—
—
22.4
276
- 24 -
Year
—
1903
Spectra
K2
Colors
W
?
Zone 97
Notes:
1 measurement.
Observations:
C8 at 104x. There is a mini-Cassiopeia just off the field to the NE.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 28.1 inches.
Separation: AB = 255 miles.
Distance (LY): 7,300
Total luminosity (Suns): 1338
STF 1983
Rating: 5 M
Position: 1552+3528
A
B
Magnitude
10.19
11.74
Separation PA
—
—
14.5 66 -
Year
—
1991
Spectra
K2
Colors
O
W?
Notes:
1830: 17.4 @ 77. 12 measurements.
Observations:
C11 at 115x.
Deep Sky Objects
Difficult
NGC 5966
Other Names: UGC 9923; H III 634
Rating: 5 D
Position: 1536+3946
Type : Gal
Surface brightness: 12.9
Class: E
Dimensions: 1.8' x 1.1'
- 25 -
Magnitude : 12.2
PA: 90
Zone 97
Observations:
C11 at 193x. It is faint, and two 7m stars 2 min N are brutal! It very gradually
brightens towards the middle.
Radial velocity (km/sec): +4,474
- 26 -
Zone 97
Zone 97 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
Zeta 2 CrB
1539+3638
1E
4
STF 1916
1510+3859
3E
2
STF 1921
1512+3840
3E
2
STF 1934
1517+4348
3E
1
Kustner 108
1528+4253
3E
1
h1274
1529+4215
3E
1
h2788
1535+4454
3E
3
STF 1973
1546+3627
3E
4
STF 1982
1550+4247
3E
3
h577
1557+3530
3E
4
h2773
1517+4124
4E
1
Mu 1 Boo
1524+3723
4E
2
STF 1946
1527+3930
4E
2
STF 1947
1528+3822
4E
2
h2786
1533+3828
4E
4
h573
1549+4037
4E
3
Lambda CrB
1556+3757
4E
4
h258
1557+3613
4E
4
h250
1512+3621
5E
2
Bur 1449
1527+4351
5E
1
Kappa CrB
1551+3539
5E
4
STF 1991
1557+4140
3M
3
Component
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
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
- 27 -
Mag
4.64
5.60
8.18
10.33
8.52
8.71
8.72
8.88
9.60
7.48
9.77
10.52
10.80
8.39
8.48
7.56
8.77
9.24
9.42
8.93
9.97
9.60
11.09
4.31
6.51
9.10
10.90
9.29
9.63
8.68
11.84
10.92
12.03
5.43
11.38
9.61
10.80
9.65
12.10
9.60
10.06
4.79
13.40
9.03
10.04
9.20
Separation
—
6.1 +
—
9.8 —
30.8 +
—
9.4 +
140.6 —
40.4 +
—
7.0 +
—
49.0 -!
—
30.7 +
—
4.7 =
—
9.4 +
—
28.4 —
109.1 +
—
7.5 +
—
6.8 =
—
23.7 —
14.5 +
—
90.8 —
16.7 +
—
22.4
—
157.0
—
134.7 —
3.1 =
94.6 -
PA
—
305 +
—
331 +
—
282 —
15 140.6 —
319 +
—
310 =
—
302 —
321 —
299 —
13 —
145 =
—
171 —
344 —
26 —
168 +
—
53 —
67 +
—
254 —
126
—
48
—
203 +
—
196 94.6 -
Zone 97
Designation
Position
Rating
Map
h562
1500+3506
4M
2
STF 1961
1535+4331
4M
3
STF 1964
1538+3615
4M
4
h567
1510+3741
5M
2
h2772
1516+4451
5M
1
h251
1520+3558
5M
2
Kazeza 93
1531+4022
5M
3
Kazeza 95
1532+3941
5M
4
Kazeza 107
1539+4112
5M
3
h572
1544+3526
5M
4
STF 1983
1552+3528
5M
4
Mu 2 Boo
1525+3721
2D
2
STF 1926
1515+3818
3D
2
OS 296
1526+4400
4D
1
OS 298
1536+3948
5D
4
OS 301
1546+4228
5D
3
Component
A
B
A
B
C
A
B
C
D
A
B
A
B
A
B
A
B
C
D
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
C
D
E
A
B
Mag
7.75
12.12
10.07
10.17
12.40
7.10
9.27
7.60
9.86
8.86
12.00
9.31
12.40
11.81
12.54
9.71
10.93
11.76
11.00
7.70
11.34
9.90
11.52
8.78
12.58
10.19
11.74
6.51
7.60
7.11
8.81
7.49
9.20
12.36
6.78
7.72
7.65
11.70
7.35
11.00
Separation
—
25.1 +
—
27.2 +
45.0 —
1.3 +
15.2 16.4 +
—
10.7
—
9.0 =
—
20.0
—
40.3 +
51.4
71.0
—
39
—
29
—
22.4
—
14.5 —
2.0 +—
0.4 —
1.9 +
77.8 +!
—
0.4 121.8 189.3 463.1 +!!
—
3.9 +
PA
—
308 =
—
23 -!
45.0 —
80 15.2 16.4 +
—
154
—
316 =
—
240
—
357 =
51.4
71.0
—
138
—
326
—
276
—
66 —
12 +
—
232 —
284 77.8 +!
—
151 121.8 189.3 334 +
—
29 -
Deep Space Objects
Object
NGC 5899
NGC 5966
NGC 5993
Position
1515+4203
1536+3946
1545+4107
Rating
4D
5D
5D
Map
1
4
3
Type
Gal (SAB(rs)c II)
Gal (E)
Gal (SB(r)b:)
- 28 -
Specifications
Surface
Mag
Br
12.4
12.7
12.2
12.9
13.1
13.0
Population