Zone 236, Master Map
Normal View
ν
-16°00'
-14°00'
Zone Master, Normal View, 10 deg FOV
φ2
µ
-18°00'
φ3
α Alkes
Crater
-24°00'
-22°00'
-20°00'
Hydra
11h 04m
10h 56m
10h 48m
10h 40m
10h 32m
10h 24m
10h 16m
10h 08m
10h 00m
Zone 236, Map 1
Normal Image
-16°00'
-15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1416
Holden 103
Holden 104
Mu Hya
-17°00'
µ
-18°00'
Aravamudan 63
NGC 3200
Bur 1072
-19°00'
NGC 3242
South 607
10h 30m
10h 25m
10h 20m
10h 15m
Bos 781
Bur 911
Aravamudan 666
10h 10m
10h 05m
10h 00m
Zone 236, Map 1
Mirror Image
-15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-16°00'
h825
STF 1416
Holden 104
µ
Mu Hya
-17°00'
Holden 103
-18°00'
Aravamudan 63
NGC 3200
Bur 1072
-19°00'
NGC 3242
South 607
Bos 781
10h 00m
10h 05m
Bur 911
10h 10m
Aravamudan 666
10h 15m
10h 20m
10h 25m
10h 30m
Zone 236, Map 2
Normal Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-22°00'
-21°00'
-20°00'
Aravamudan 666
-23°00'
Harvard 124
h4303
h4285
Aravamudan 1774
-24°00'
h4305
Bur 217
10h 30m
10h 25m
10h 20m
10h 15m
10h 10m
10h 05m
10h 00m
Zone 236, Map 2
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-22°00'
-21°00'
-20°00'
Aravamudan 666
h4303
-23°00'
Harvard 124
h4285
Aravamudan 1774
-24°00'
h4305
Bur 217
10h 00m
10h 05m
10h 10m
10h 15m
10h 20m
10h 25m
10h 30m
Zone 236, Map 3
Normal Image
-15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1474
-16°00'
STF 1473
Nu Hya ν
LDS 311
φ2
Skinner 14
-17°00'
φ3
South 610
-18°00'
Holden 108 Hough 373
-19°00'
Alkes
h4337
Crater
Holden 110
Hydra
11h 00m
10h 55m
10h 50m
10h 45m
10h 40m
10h 35m
10h 30m
Zone 236, Map 3
Mirror Image
-15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1474
ν
Skinner 14
φ2
-16°00'
STF 1473
Nu Hya
LDS 311
-17°00'
φ3
Holden 108 Hough 373
-18°00'
South 610
-19°00'
α
h4337
Crater
Holden 110
Hydra
10h 30m
10h 35m
10h 40m
10h 45m
10h 50m
Hough 533
10h 55m
11h 00m
Zone 236, Map 4
Normal Image
-20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Hydra
Hough 533
-21°00'
Bos 2248
Holden 109
South 618
Bur 1428
-22°00'
Hough 375
-24°00'
-23°00'
Aravamudan 1473
Crater
11h 00m
10h 55m
10h 50m
10h 45m
10h 40m
10h 35m
10h 30m
Zone 236, Map 4
Mirror Image
-20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Hydra
Hough 533
Holden 109
South 618
Bur 1428
-21°00'
Bos 2248
-22°00'
Hough 375
-24°00'
-23°00'
Aravamudan 1473
Crater
10h 30m
10h 35m
10h 40m
10h 45m
10h 50m
10h 55m
11h 00m
Zone 236
2 Reference Stars, 31 Double Stars,
1 Planetary Nebula, 1 Galaxy
A
Holden 110........................................... 17
Hough 373............................................ 15
Hough 375............................................ 20
Hough 533............................................ 20
Aravamudan 1473................................ 18
Aravamudan 1774................................ 11
Aravamudan 63...................................... 6
Aravamudan 666.................................... 5
L
B
LDS 311............................................... 16
Bos 2248 .............................................. 18
Bos 781 .................................................. 3
Bur 1072 ................................................ 4
Bur 1428 .............................................. 21
Bur 217 ................................................ 12
Bur 911 .................................................. 6
M
Mu Hya .................................................. 2
N
NGC 3200 .............................................. 9
NGC 3242 .............................................. 8
Nu Hya................................................. 13
H
h4285 ................................................... 11
h4303 ..................................................... 9
h4305 ................................................... 10
h4337 ................................................... 14
Harvard 124 ......................................... 10
Holden 103 ............................................ 7
Holden 104 ............................................ 5
Holden 108 .......................................... 16
Holden 109 .......................................... 22
S
Skinner 14 ............................................ 17
South 607 ............................................... 2
South 610 ............................................. 14
South 618 ............................................. 19
STF 1416................................................ 3
STF 1473.............................................. 15
STF 1474.............................................. 13
-1-
Zone 236
Zone 236, Map 1
Reference Star
Mu Hya (42 Hya; HD 90432; SAO 155980)
Position: 1026-1650
Mag : 3.83
Assumed distance: 248 light years
Spectrum : K4 III
Color : Y
Assumed luminosity (suns): 148
Notes:
This star is an infra-red source.
Double Stars
Easy
South 607
Rating: 2 E
ADS 7641; SAO 155730
Position: 1007-1919
A
B
Magnitude
8.01
8.17
Separation PA
—
—
9.6 =
327 +?
Year
—
1992
Spectra
G5
K2
Colors
z
W
Notes:
1825: 9.6 @ 146. 17 measurements. The stars share common proper motion.
Quadrant reversal?
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.4 inches; B = 27.1 inches.
Separation: AB = 2.48 miles.
Distance (LY): 166
Total luminosity (Suns): 1.6
-2-
Zone 236
STF 1416
Rating: 2 E
ADS 7682; HD 88536; SAO 155811
Position: 1012-1605
A
B
Magnitude
7.63
9.62
Separation PA
—
—
11.8 +
277 +
Year
—
1991
Spectra
A3 III
Colors
W
dB
Notes:
1827: 11.3 @ 276. 27 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars exhibit a small common
proper motion.
Observations:
C8 at 104x. A ruddy 8.2m star (SAO 155808) lies 6 min S, while 8.3m SAO 155816
(dY!) is 12 min N. Very rich field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 12.3 miles.
Distance (LY): 670
Total luminosity (Suns): 35
Bos 781
Rating: 3 E
SAO 155674
Position: 1002-1946
A
B
Magnitude
9.43
9.96
Separation PA
—
—
2.4 =
343 =
Notes:
1927: 2.4 @ 343. 13 measurements.
Observations:
C11 at 193x.
-3-
Year
—
1991
Spectra
F2 V
Colors
W
W
Zone 236
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.10 inches.
Separation: AB = 5.54 miles.
Distance (LY): 1,480
Total luminosity (Suns): 47
Bur 1072
Schjellerup 110 (C); ADS 7627; HD 87344; SAO 155704
Rating: 3 E
Position: 1004-1806
A
B
C
Magnitude
6.27
12.10
7.14
Separation
—
11.9 +
21.2 =
PA
—
48 +
274 =
Year
—
1959
1991
Spectra
B8 V
B9 III/IV
Colors
W
?
L?
Notes:
AB 1889: 10.9 @ 43. 6 measurements.
AC 1822: 21.2 @ 274. 26 measurements. The stars share common proper motion.
May be optical because Hipparcos gives different distances (478 and 2,700 light years).
Spectrum of C is B9 III/IV.
Observations:
C8 at 104x. This star is the W vertex of a right triangle.
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.2 inches; C = 4.75 inches.
Separation: AB = 8.87 miles; AC = 15.8 miles.
Distance (LY): 478
Total luminosity (Suns): 81.26
-4-
Zone 236
Aravamudan 666
Rating: 4 E
HD 89003; SAO 155852
Position: 1016-1951
A
B
Magnitude
9.17
12.00
Separation PA
—
—
12.7
14
Year
—
1917
Spectra
K0 V
Colors
Y
W
Notes:
1 measurement.
Observations:
C11 at 98x. Nice field! Two 10m stars nearby form a nice, small and narrow
triangle.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 2.40 inches.
Separation: AB = 1.48 miles.
Distance (LY): 75
Total luminosity (Suns): 0.101
Holden 104
Rating: 5 E
ADS 7734
Position: 1021-1643
A
B
C
Magnitude
10.28
10.53
8.66
Separation
—
3.4 +
152.4
PA
—
198 +?
270
Year
—
1991
1915
Spectra
G5 V
M1 III
Notes:
AB 1888: 3.3 @ 15. 9 measurements. Quadrant reversal?
AC 1 measurement.
Observations:
C8 at 104x: Not much. A third star (10.5m) forms a triangle with it.
-5-
Colors
W
No
Y
Zone 236
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.00 inches; C = 43.7 inches.
Separation: AB = 5.78 miles; AC = 259 miles.
Distance (LY): 1,090
Total luminosity (Suns): 38
Moderate
Bur 911
Rating: 3 M
ADS 7655; HD 87998; SAO 155757
Position: 1008-1945
A
B
C
Magnitude
7.26
11.05
9.20
Separation
—
4.3 66.4 +!!
PA
—
315 +
62 -
Year
—
1991
1959
Spectra
G0 V
Colors
Y
W
W
Notes:
AB 1880: 4.8 @ 312. 15 measurements.
AC 1880: 47.3 @ 83. 12 measurements. Optical.
Observations:
C8 at 206x. Star B looks brighter than 11m— I estimate about 9.5.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.45 inches.
Separation: AB = 4,330 feet; AC = 12.7 miles.
Distance (LY): 123
Total luminosity (Suns): 1.45
Aravamudan 63
Rating: 5 M
HD 86914; SAO 155664
Position: 1002-1722
A
B
Magnitude
9.26
12.10
Separation PA
—
—
11.5
80
Year
—
1915
-6-
Spectra
A7/8 V
Colors
W
?
Zone 236
Notes:
1 measurement.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.30 inches.
Separation: AB = 1.23 miles.
Distance (LY): 69
Total luminosity (Suns): 0.079
Difficult
Holden 103
Rating: 4 D
ADS 7733
Position: 1021-1621
A
B
Magnitude
8.55
9.00
Separation PA
—
—
1.7 +
341 +
Year
—
1991
Notes:
1888: 1.6 @ 337. 12 measurements.
Observations:
C11 at 634x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.39 inches.
Separation: AB = 2.81 miles.
Distance (LY): 1,060
Total luminosity (Suns): 55
-7-
Spectra
G3 V
Colors
Y
pY
Zone 236
Deep Sky Objects
Easy
NGC 3242
Rating: 2 E
Other Names: Ghost of Jupiter; PK 261+32.1, H IV 27 ; The CBS Eye Nebula
Astronomical League Program: Caldwell Club, Herschel 400 Club, Urban Deep Sky
Club
Position: 1025-1838
Type: Pn
Dimensions: 40" x 35"
Class: 4
Magnitude: 8.9
Notes:
It was discovered in 1785 by William Herschel.
It is 1 light year in diameter.
The central star has a surface temperature of 60,000o K.
Observations:
C8 at 206x. Very large and bright, with a bluish tint and a ring. The edges are fuzzy.
It has a NW-SE axis, and a 10m star lies 5 min S. The central star (11m) is occasionally
seen with high powers, where the nebula also offers tantalizing glimpses of detail as the
sky roils. At high powers (400+) some knots appear SE of the star.
Model (where the Sun is a baseball):
Its diameter would be 206 miles.
Distance (LY): 3,300
Luminosity (suns): 230
-8-
Zone 236
Difficult
NGC 3200
Other Names: PGC 30108
Type: Gal
Dimensions: 4.8 x 1.8
Rating: 5 D
Class: SB(rs)c II
PA: 160
Magnitude: 12.0
Notes:
This galaxy produced supernova 1953D.
Observations:
C8 at 104x. It is an extremely faint glow just detected with tube movement. A 9m
star lies 6 min SE.
Model (where the Sun is a baseball):
Its diameter would be 97 million miles.
Distance (LY): 215,000,000
Radial velocity (km/sec): +3,520
Luminosity (suns): 57,400,000,000
Zone 236, Map 2
Double Stars
Easy
h4303
Rating: 3 E
ADS 7731; HD 89637
Position: 1020-2237
A
B
Magnitude
8.48
9.47
Separation PA
—
—
8.4 267 -
-9-
Year
—
1966
Spectra
A2 V
Colors
W
W
Zone 236
Notes:
1835: 10.0 @ 269. 11 measurements.
Hipparcos/Tycho mission data show different distances for these stars (279 and 4,100
light years); they may be optical.
Observations:
C8 at 104x.
h4305
Rating: 3 E
ADS 7735; SAO 178706
Position: 1021-2338
A
B
Magnitude
7.54
10.65
Separation PA
—
—
18.2 +
218 +
Year
—
1991
Spectra
K0 III
K0 III
Colors
pO
B
Notes:
1835: 18.0 @ 214. 10 measurements.
The stars share common proper motion.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 46.2 inches; B = 28.0 inches.
Separation: AB = 13.0 miles.
Distance (LY): 456
Total luminosity (Suns): 17
Harvard 124
Rating: 4 E
ADS 7610; HD 86916; SAO 178307
Position: 1001-2246
A
B
C
Magnitude
7.82
7.34
12.74
Separation
—
13.2 42.0 =
PA
—
851 +
- 10 -
Year
—
1991
1928
Spectra
A0 IV
Colors
yW
V
?
Zone 236
Notes:
AB 1868: 14.0 @ 9. 9 measurements.
AC 1898: 42 @ 49. 2 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.7 inches.
Separation: AB = 9.78 miles; AC = 31.1 miles.
Distance (LY): 475
Total luminosity (Suns): 40.31
Aravamudan 1774
Rating: 4 E
SAO 178364
Position: 1004-2317
A
B
Magnitude
9.61
12.50
Separation PA
—
—
10.7
112
Year
—
1921
Spectra
Colors
O
W
Notes:
1 measurement.
Observations:
C11 at 98x.
h4285
Rating: 4 E
ADS 7642; HD 87756
Position: 1007-2308
A
B
Magnitude
7.65
9.71
Separation PA
—
—
8.6 357 -
Notes:
1835: 10.0 @ 2. 12 measurements.
- 11 -
Year
—
1991
Spectra
F5 V
Colors
W
B
Zone 236
Observations:
C8 at 104x. Rich field to the NW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.35 inches.
Separation: AB = 5.18 miles.
Distance (LY): 386
Total luminosity (Suns): 11.0
Moderate
Bur 217
Rating: 3 M
ADS 7644; HD 87793; SAO 178425
Position: 1007-2443
A
B
Magnitude
7.15
7.56
Separation PA
—
—
2.0 +
129 +
Year
—
1991
Notes:
1865: 1.7 @ 96. 61 measurements.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 4,066 feet.
Distance (LY): 247
Total luminosity (Suns): 6.6
- 12 -
Spectra
F8 IV
Colors
W
W
Zone 236
Zone 236, Map 3
Reference Star
Nu Hya (HD 93813; SAO 156256)
Position: 1050-1611
Mag : 3.11
Assumed distance: 139 light years
Spectrum : K0 III
Color : yO
Assumed luminosity (suns): 88
Notes:
This star is an infra-red source.
Double Stars
Easy
STF 1474
Rating: 3 E
ADS 7930; HD 93526; SAO 156235
Position: 1048-1516
A
B
C
Magnitude
6.67
6.94
6.90
Separation
—
71.1 74.1 -
PA
—
25 +
25 +
Year
—
1991
1987
Spectra
A0 IV
Colors
gW
W
W
Notes:
AB 1822: 71.6 @ 22. 29 measurements. Star A is a spectroscopic binary. The stars
share common proper motion.
AC 1858: 77.9 @ 23. 19 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.7 inches.
Separation: AB = 217 miles; AC = 227 miles.
Distance (LY): 1,960
Total luminosity (Suns): 1,400
- 13 -
Zone 236
South 610
Rating: 4 E
HD 91528; SAO 156064
Position: 1034-1750
A
B
Magnitude
8.20
8.88
Separation PA
—
—
111.9 +
49 +
Year
—
1991
Spectra
G3 V
M0
Colors
W
W
Notes:
1825: 100.9 @ 36. 14 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.39 inches; B = 42.2 inches.
Separation: AB = 41.0 miles.
Distance (LY): 235
Total luminosity (Suns): 3.6
h4337
Rating: 4 E
ADS 7856
Position: 1038-1921
A
B
Magnitude
8.91
10.66
Separation PA
—
—
9.7 72 =
Year
—
1992
Notes:
1878: 10.0 @ 72. 13 measurements.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.10 inches.
Separation: AB = 12.1 miles.
- 14 -
Spectra
F3 IV/V
Colors
W
W
Zone 236
Distance (LY): 800
Total luminosity (Suns): 16.4
STF 1473
Rating: 4 E
HD 93527; SAO 156233
Position: 1048-1538
A
B
C
Magnitude
7.67
8.89
10.10
Separation
—
30.5 97.7 -
PA
—
10 +
331 +
Year
—
1991
1982
Spectra
F8 II/III
Colors
W
pR
?
Notes:
AB 1822: 31.4 @ 9. 17 measurements. The stars share a large common proper
motion.
AC 1905: 98.7 @ 327. 3 measurements.
Observations:
C8 at 104x. The C star is very difficult.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.50 feet.
Separation: AB = 15.2 miles; AC = 48.6 miles.
Distance (LY): 319
Total luminosity (Suns): 10
Hough 373
Holden 108; ADS 7867; HD 92296; SAO 156132
Rating: 5 E
Position: 1039-1736
A
B
C
Magnitude
8.24
9.19
9.65
Separation
—
1.0 =
49.7 +
PA
—
25 +
238 +
Notes:
AB 1888: 1.0 @ 22. 11 measurements.
AC 1892: 49.1 @ 237. 9 measurements.
- 15 -
Year
—
1991
1985
Spectra
A2 III
Colors
W
No
W?
Zone 236
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.1 inches.
Separation: AB = 1,426 feet; AC = 13.6 miles.
Distance (LY): 175
Total luminosity (Suns): 1.57
LDS 311
Rating: 5 E
HD 92440; SAO 156142
Position: 1040-1622
A
B
Magnitude
7.72
8.99
Separation PA
—
—
213.4 +
317 -
Year
—
1991
Spectra
G3 V
Colors
pY
W
Notes:
1960: 208.0 @ 318. 2 measurements.
May be optical because Hipparcos gives different distances (190 and 550 light years).
Observations:
C11 at 98x.
Moderate
Holden 108
Hough 373 (C); HD 92296; SAO 156132
Rating: 4 M
Position: 1039-1735
A
B
C
Magnitude
8.59
9.19
9.55
Separation
—
1.0 =
49.7 +
PA
—
25 +
238 +
Notes:
AB 1888: 1.0 @ 22. 11 measurements.
AC 1892: 49.1 @ 237. 9 measurements.
- 16 -
Year
—
1991
1985
Spectra
A6/8 III
Colors
W
Y
W
Zone 236
Observations:
C11 at 634x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.20 inches.
Separation: AB = 1,426 feet; AC = 13.6 miles.
Distance (LY): 175
Total luminosity (Suns): 1.75
Holden 110
Rating: 4 M
ADS 7919; HD 93261
Position: 1046-1942
A
B
Magnitude
9.26
10.45
Separation PA
—
—
2.6 +
280 +
Year
—
1999
Spectra
G1 V
Colors
pY
Y
Notes:
1888: 2.0 @ 277. 10 measurements.
Observations:
C11 at 193x. Nice field.
Skinner 14
Rating: 5 M
ADS 7818
Position: 1032-1624
A
B
Magnitude
10.13
10.30
Separation PA
—
—
6.9 =
82 +
Notes:
1907: 6.9 @ 74. 5 measurements.
Observations:
C11 at 98x.
- 17 -
Year
—
1964
Spectra
Colors
W
W
Zone 236
Zone 236, Map 4
Double Stars
Easy
Bos 2248
Jonckheere 2655; Bhaskavan 13; HD 91279; SAO 178940
Rating: 3 E
Position: 1032-2021
A
B
Magnitude
9.01
10.50
Separation PA
—
—
6.9 =
66 +
Year
—
1970
Spectra
G5 V
Colors
Y
pO
Notes:
1918: 6.9 @ 65. 10 measurements.
Observations:
C11 at 98x. It is the northern star of a large diamond pattern.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.00 inches.
Separation: AB = 4,277 feet.
Distance (LY): 76
Total luminosity (Suns): 0.141
Aravamudan 1473
Rating: 4 E
SAO 179061
Position: 1038-2153
A
B
Magnitude
9.49
11.60
Separation PA
—
—
12.5
359
Notes:
1 measurement.
- 18 -
Year
—
1920
Spectra
K0
Colors
yO
W
Zone 236
Observations:
C11 at 98x. It is part of a small isosceles triangle.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.5 inches.
Separation: AB = 2.28 miles.
Distance (LY): 117
Total luminosity (Suns): 0.196
South 618
Rating: 4 E
HD 94749; SAO 179350
Position: 1056-2108
A
B
Magnitude
8.94
9.03
Separation PA
—
—
79.3 +
37 +?
Year
—
1994
Spectra
K5
F5
Colors
Y
Y
Notes:
1825: 79.1 @ 216. 10 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. Quadrant reversal apparent.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 36.3; B = 13.9 inches.
Separation: AB = 18.3 miles.
Distance (LY): 148
Total luminosity (Suns): 0.9
- 19 -
Zone 236
Moderate
Hough 533
Bur 1429 (B); HD 94388; SAO 156301
Rating: 4 M
Position: 1054-2008
A
B
C
D
BC
BD
Magnitude
5.24
9.58
10.40
13.30
Separation PA
—
—
124.5 216 +
14.0 +
45.3
132 +
294
Year
—
1968
Spectra
F6 Vv
G5
Colors
W
yW
W?
?
1917
1890
Notes:
AB 1886: 135.3 @ 208. 5 measurements. A is a long-period variable.
BC 1890: 13.4 @ 131. 3 measurements.
BD 1 measurement.
Observations:
C11 at 98x. C was very difficult.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.20 inches; B = 21.2 inches.
Separation: AB = 19.8 miles; BC = 2.23 miles; BD = 7.22 miles.
Distance (LY): 102
Total luminosity (Suns): 6.70
Hough 375
Rating: 5 M
ADS 7947; HD 94073; SAO 179272
Position: 1051-2131
A
B
Magnitude
8.02
12.10
Separation PA
—
—
12.5 +
176 +
Notes:
1890: 12.3 @ 174. 7 measurements.
- 20 -
Year
—
1959
Spectra
K4/5 III
Colors
O
W
Zone 236
Observations:
C11 at 193x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 54.3 inches.
Separation: AB = 60.1 miles.
Distance (LY): 3,080
Total luminosity (Suns): 470
Bur 1428
V Hya
Rating: 5 M
Position: 1052-2115
A
B
Magnitude
8.05
12.21
Separation PA
—
—
46.6 +
186 =
Year
—
1991
Spectra
N6
Colors
R!!
W?
Notes:
1903: 46.3 @ 186. 3 measurements. A is a variable.
Observations:
C11 at 98x. The primary looks like a tiny drop of blood on a black velvet sky!
Wonderful effect!
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.0 feet.
Separation: AB = 1,484 miles.
Distance (LY): 20,400
Total luminosity (Suns): 20,000
- 21 -
Zone 236
Difficult
Holden 109
Rating: 3 D
ADS 7901
Position: 1043-2101
A
B
Magnitude
10.89
10.90
Separation PA
—
—
2.2 +
136 -
Notes:
1888: 2.0 @ 142. 10 measurements.
Observations:
C11 at 634x. It is part of a very small triangle.
- 22 -
Year
—
1966
Spectra
Colors
W
W
Zone 236
Zone 236 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
South 607
1007-1919
2E
1
STF 1416
1012-1605
2E
1
Bos 781
1002-1946
3E
1
Bur 1072
1004-1806
3E
1
h4303
1020-2237
3E
2
h4305
1021-2338
3E
2
Bos 2248
1032-2021
3E
4
STF 1474
1048-1516
3E
3
Harvard 124
Aravamudan
1774
1001-2246
4E
2
1004-2317
4E
2
1007-2308
4E
2
1016-1951
4E
1
h4285
Aravamudan
666
South 610
Aravamudan
1473
1034-1750
4E
3
1038-2153
4E
4
h4337
1038-1921
4E
3
STF 1473
1048-1538
4E
3
South 618
1056-2108
4E
4
Holden 104
1021-1643
5E
1
Hough 373
1039-1736
5E
3
LDS 311
1040-1622
5E
3
Component
A
B
A
B
A
B
A
B
C
A
B
A
B
A
B
A
B
C
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
C
A
B
C
A
B
- 23 -
Mag
8.01
8.17
7.63
9.62
9.43
9.96
6.27
12.10
7.14
8.48
9.47
7.54
10.65
9.01
10.50
6.67
6.94
6.90
7.82
7.34
12.74
9.61
12.50
7.65
9.71
9.17
12.00
8.20
8.88
9.49
11.60
8.91
10.66
7.67
8.89
10.10
8.94
9.03
10.28
10.53
8.66
8.24
9.19
9.65
7.72
8.99
Separation
—
9.6 =
—
11.8 +
—
2.4 =
—
11.9 +
21.2 =
—
8.4 —
18.2 +
—
6.9 =
—
71.1 74.1 —
13.2 42.0 =
—
10.7
—
8.6 —
12.7
—
111.9 +
—
12.5
—
9.7 —
30.5 97.7 —
79.3 +
—
3.4 +
152.4
—
1.0 =
49.7 +
—
213.4 +
PA
—
327 +?
—
277 +
—
343 =
—
48 +
21.2 =
—
267 —
218 +
—
66 +
—
25 +
74.1 —
842.0 =
—
112
—
357 —
14
—
49 +
—
359
—
72 =
—
10 +
97.7 —
37 +?
—
198 +?
152.4
—
25 +
49.7 +
—
317 -
Zone 236
Designation
Position
Rating
Map
Bur 217
1007-2443
3M
2
Bur 911
1008-1945
3M
1
Holden 108
1039-1735
4M
3
Holden 110
1046-1942
4M
3
Hough 533
Aravamudan
63
1054-2008
4M
4
1002-1722
5M
1
Skinner 14
1032-1624
5M
3
Hough 375
1051-2131
5M
4
Bur 1428
1052-2115
5M
4
Holden 109
1043-2101
3D
4
Holden 103
1021-1621
4D
1
Component
A
B
A
B
C
A
B
C
A
B
A
B
C
D
BC
BD
A
B
A
B
A
B
A
B
A
B
A
B
Mag
7.15
7.56
7.26
11.05
9.20
8.59
9.19
9.55
9.26
10.45
5.24
9.58
10.40
13.30
9.26
12.10
10.13
10.30
8.02
12.10
8.05
12.21
10.89
10.90
8.55
9.00
Separation
—
2.0 +
—
4.3 66.4 +!!
—
1.0 =
49.7 +
—
2.6 +
—
124.5 -
PA
—
129 +
—
315 +
66.4 +!!
—
25 +
49.7 +
—
280 +
—
216 +
14.0 +
45.3
—
11.5
—
6.9 =
—
12.5 +
—
46.6 +
—
2.2 +
—
1.7 +
132 +
294
—
80
—
82 +
—
176 +
—
186 =
—
136 —
341 +
Deep Space Objects
Object
NGC 3242
NGC 3200
Position
1025-1838
1019-1759
Rating
2E
5D
Map
1
1
Type
Pn (4)
Gal (SB(rs)c II)
- 24 -
Specifications
Surface
Mag
Br
8.9
12.0
Population