Zone 234, Master Map
Normal View
-16°00'
-14°00'
Zone Master, Normal View, 10 deg FOV
Hydra
c
d
-24°00'
f
-22°00'
-20°00'
Pyxis
-18°00'
e
ρ
09h 04m
08h 56m
08h 48m
08h 40m
08h 32m
08h 24m
08h 16m
08h 08m
08h 00m
Zone 234, Map 1
Normal Image
-15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h4070
-16°00'
h4050
-17°00'
Aravamudan 56
Aravamudan 54
Aravamudan 206
Argelander 20
Aravamudan 208
Bhaskaran 56
Jonckheere 2638
-18°00'
Pyxis
NGC 2509
Bos 2646
Fender 14
-19°00'
h4100
Bos 2645
Ruprecht 46
South 563
08h 30m
08h 25m
08h 20m
08h 15m
08h 10m
08h 05m
08h 00m
Zone 234, Map 1
Mirror Image
-15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h4070
-16°00'
h4050
Hydra
Aravamudan 54
-17°00'
Aravamudan 56
Aravamudan 206
Bhaskaran 56
Aravamudan 208
Jonckheere 2638
NGC 2509
NGC 2509
Bos 2646
Ruprecht 46
Fender 14
-19°00'
-18°00'
Pyxis
Bos 2645
South 563
08h 00m
08h 05m
08h 10m
08h 15m
08h 20m
08h 25m
08h 30m
Zone 234, Map 2
Normal Image
-20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
South 563
-21°00'
h2441
Bhaskaran 9
Bos 2159
Bur 334
-22°00'
Aravamudan 1442
Argelander 19
South 568
-24°00'
-23°00'
Bur 333
h4078
ρ
Bos 152
08h 30m
08h 25m
08h 20m
08h 15m
08h 10m
08h 05m
08h 00m
Zone 234, Map 2
Mirror Image
-20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
South 563
-21°00'
h2441
h4022
Aravamudan 1442
-22°00'
Argelander 19
Bos 2159
Bur 334
h4078
ρ
08h 00m
08h 05m
-24°00'
-23°00'
Bur 333
South 568
Bos 152
08h 10m
08h 15m
08h 20m
08h 25m
08h 30m
Zone 234, Map 3
Normal Image
9 Hya
A 3063
NGC 2610
-16°00'
-15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-17°00'
Pocock 2
Pocock 3
-18°00'
Argelander 72
South 585
Fender 15
-19°00'
h4100
Hydra
NGC 2665
Bur 584
Aravamudan 647
Bur 207
09h 00m
Aravamudan 648
08h 55m
Jonckheere 1527
08h 50m
08h 45m
08h 40m
08h 35m
08h 30m
Zone 234, Map 3
Mirror Image
A 3063
-16°00'
-15°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
9 Hya
NGC 2610
-17°00'
Pocock 2
-18°00'
Pocock 3
South 585
-19°00'
h4100 Fender 15
Hydra
NGC 2665
Bur 584
Bur 207
Aravamudan 647
Jonckheere 1527
08h 30m
08h 35m
08h 40m
08h 45m
08h 50m
08h 55m
09h 00m
Zone 234, Map 4
Normal Image
-20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-21°00'
Jonckheere 1527
Aravamudan 648
-22°00'
Aravamudan 1058
NGC 2613
-24°00'
See 106
Bos 161
09h 00m
08h 55m
08h 50m
08h 45m
-23°00'
Bur 208
08h 40m
08h 35m
08h 30m
Zone 234, Map 4
Mirror Image
-20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-21°00'
Jonckheere 1527
-22°00'
Aravamudan 1058
-23°00'
Bur 208
NGC 2613
-24°00'
See 106
Bos 161
08h 30m
08h 35m
08h 40m
08h 45m
08h 50m
08h 55m
09h 00m
Zone 234
39 Double Stars, 1 Planetary Nebula,
2 Open Clusters, 2 Galaxies
Flamsteed
Fender 15 .................................................. 15
9 Hya......................................................... 18
H
A
h2441......................................................... 10
h4050........................................................... 2
h4070........................................................... 6
h4078......................................................... 11
h4100......................................................... 15
A 3063....................................................... 18
Aravamudan 1058..................................... 21
Aravamudan 1442..................................... 10
Aravamudan 206......................................... 5
Aravamudan 208......................................... 3
Aravamudan 54........................................... 4
Aravamudan 56........................................... 4
Aravamudan 647....................................... 16
Aravamudan 648....................................... 20
Argelander 19............................................ 12
Argelander 20.............................................. 2
Argelander 72............................................ 17
J
Jonckheere 1527........................................ 22
Jonckheere 2638.......................................... 7
N
NGC 2509 ................................................... 8
NGC 2610 ................................................. 19
NGC 2613 ................................................. 23
NGC 2665 ................................................. 19
B
Bhaskaran 56............................................... 4
Bhaskaran 9............................................... 13
Bos 152 ..................................................... 13
Bos 2159 ................................................... 11
Bos 2645 ..................................................... 6
Bos 2646 ..................................................... 7
Bur 207...................................................... 17
Bur 208...................................................... 22
Bur 333........................................................ 9
Bur 334...................................................... 12
P
Pocock 2.................................................... 16
Pocock 3.................................................... 14
R
Ruprecht 46................................................. 8
S
See 106...................................................... 21
South 563 .................................................... 3
South 568 .................................................... 9
South 585 .................................................. 14
F
Fender 14 .................................................... 5
-1-
Zone 234
Zone 234, Map 1
Double Stars
Easy
h4050
Rating: 2 E
HD 68487
Position: 0812-1540
A
B
Magnitude
8.53
8.94
Separation PA
—
—
23.1 +
304 =
Year
—
1991
Spectra
A0 V
A0 V
Colors
W
W
Notes:
1894: 22.6 @ 304. 10 measurements.
Observations:
C8 at 83x. It sits inside a "home plate" of stars (six of them all about 9m).
Argelander 20
Rating: 2 E
ADS 6832; HD 71798; SAO 154297
Position: 0829-1732
A
B
Magnitude
8.36
8.88
Separation PA
—
—
15.1 174 +
Year
—
1991
Spectra
F5 V
F5 V
Colors
W
W
Notes:
1877: 15.2 @ 173. 15 measurements. The stars share a small common proper
motion.
Observations:
C8 at 83x. A nice cascade of four 9m stars lies 5 min W.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.35 inches; B = 13.7 inches.
Separation: AB = 63.62 miles.
Distance (LY): 2,700
Total luminosity (Suns): 360
-2-
Zone 234
South 563
Hipparcos 1159 (Aa); Bur 1419 (BC); ADS 6622; HD 67670
Rating: 3 E
Position: 0808-1952
A
B
C
a
BC
Magnitude
7.07
7.54
13.00
8.51
Separation PA
—
—
134.6 +
57 +
0.2
7.8
40
300
Year
—
1991
1903
1991
1903
Spectra
B8 III
G8 III
Colors
bW
O
No
No
Notes:
AB 1825: 134.3 @ 56. 4 measurements. The stars show similar proper motions.
BC, Aa both 1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.0 inches; B = 24.1 inches.
Separation: AB = 294 miles; BC = 17.0 miles; Aa = 2,307 feet.
Distance (LY): 1,400
Total luminosity (Suns): 356
Aravamudan 208
Rating: 4 E
Position: 0805-1802
A
B
Magnitude
10.41
11.24
Separation PA
—
—
9.2 +
133 +?
Year
—
1991
Spectra
Colors
W
W
Notes:
1915: 8.5 @ 308. 3 measurements. 1915 quadrant reversal?
May be optical because Hipparcos gives different distances (91 and 69 light years).
Observations:
C11 at 98x. An 8m Y star is 5 min N.
-3-
Zone 234
Aravamudan 54
Rating: 4 E
HD 68837; SAO 153999
Position: 0814-1707
A
B
Magnitude
8.47
11.07
Separation PA
—
—
11.1 88 -
Year
—
1991
Spectra
A0 V
Colors
W
W
Notes:
1915: 12.2 @ 89. 2 measurements.
Observations:
C11 at 98x.
Aravamudan 56
Rating: 4 E
HD 69490; SAO 154059
Position: 0817-1638
A
B
Magnitude
8.52
11.90
Separation PA
—
—
11.9
349
Year
—
1915
Spectra
K0 III
Colors
O
rO
Notes:
1 measurement.
Observations:
C11 at 98x.
Bhaskaran 56
Rating: 4 E
Position: 0823-1804
A
B
Magnitude
10.06
10.41
Separation PA
—
—
18.5 271 -?
Year
—
1991
Spectra
F5
Notes:
1915: 18.9 @ 92. 2 measurements. Quadrant reversal in 1915?
-4-
Colors
W
B
Zone 234
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.6 inches.
Separation: AB = 1.09 miles.
Distance (LY): 38
Total luminosity (Suns): 0.018
Fender 14
Jonckheere 2640;
Rating: 4 E
Position: 0827-1910
A
B
Magnitude
10.35
10.42
Separation PA
—
—
4.4 +
309 -
Year
—
1999
Spectra
Colors
W
W
Notes:
1915: 3.6 @ 318. 10 measurements.
Observations:
C11 at 98x. Nice field!
Distance (LY): 36
Total luminosity (Suns): 0.014
Aravamudan 206
Rating: 5 E
Position: 0801-1722
A
B
Magnitude
9.53
10.67
Separation PA
—
—
10.0
83
Year
—
1915
Notes:
1 measurement.
Observations:
C11 at 98x.
-5-
Spectra
Colors
pY
W
Zone 234
Distance (LY): 54
Total luminosity (Suns): 0.047
h4070
Rating: 5 E
HD 69530; SAO 154061
Position: 0817-1509
A
B
Magnitude
7.17
11.80
Separation PA
—
—
30.3 +
105 -
Year
—
1920
Spectra
K2 III
Colors
O
pB
Notes:
1916: 30.2 @ 106. 2 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 49.5 inches.
Separation: AB = 78.0 miles.
Distance (LY): 1,650
Total luminosity (Suns): 304
Moderate
Bos 2645
Rating: 5 M
HD 66991; SAO 153807
Position: 0805-1924
A
B
Magnitude
8.56
12.30
Separation PA
—
—
10.3 59 -
Notes:
1917: 11.7 @ 60. 2 measurements.
Observations:
C11 at 98x.
-6-
Year
—
1991
Spectra
Ap
Colors
W
?
Zone 234
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.83 inches.
Separation: AB = 56.4 miles.
Distance (LY): 3,510
Total luminosity (Suns): 375
Bos 2646
Rating: 5 M
Position: 0806-1904
A
B
Magnitude
9.02
11.20
Separation PA
—
—
10.0
92
Year
—
1933
Spectra
G0 V
Colors
pY
W
Notes:
1 measurement.
Observations:
C11 at 98x.
Jonckheere 2638
Rating: 5 M
HD 68086; SAO 153918
Position: 0811-1812
A
B
Magnitude
8.32
12.20
Separation PA
—
—
80.0
97
Year
—
1943
Notes:
1 measurement.
B has a 12.9m companion at 3.0 @ 20 (1943).
Observations:
C8 at 104x. A triangle of 9m stars lies 10 min SW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 49.5 inches.
Separation: AB = 262 miles.
Distance (LY): 2,100
Total luminosity (Suns): 205
-7-
Spectra
K2 III
Colors
O
?
Zone 234
Deep Sky Objects
Moderate
NGC 2509
Other Names: Melotte 81; Collinder 171; Raab 68, H VIII 1
Astronomical League Program: Herschel 400 Club
Rating: 3 M
Position: 0801-1904
Type: Oc
Dimensions: 8'
Class: I 1r
Cluster population: 70
Magnitude: 9.3
Notes:
This cluster may be as old as 8 billion years!
Observations:
C8 at 206x. Dense, it is almost nebulous in appearance. I resolved 25 stars. It is faint
and round, but with a bright center. There is also a rich field area bout 20 min N.
Distance (LY): 2,970
Total luminosity (Suns): 131
Ruprecht 46
Position: 0802-1928
Type: Oc
Dimensions: 2.0'
Rating: 5 M
Class: II 3p
Cluster population: 15
Magnitude: 9.1
Notes:
The brightest star is 9.4m.
Observations:
C8 at 280x. It looks like six stars in a Y-shaped asterism.
Distance (LY): 2,450
Total luminosity (Suns): 108
-8-
Zone 234
Zone 234, Map 2
Double Stars
Easy
Bur 333
Rating: 3 E
ADS 6524; HD 66097; SAO 174995
Position: 0801-2220
A
B
Magnitude
7.06
7.60
Separation PA
—
—
42.9 +! 71 +
Year
—
1991
Spectra
A2 V
Colors
W
B
Notes:
1875: 30.0 @ 60. 10 measurements.
THere is a 9.26m companion to A at 1.6- @ 45+ (1991).
Observations:
C8 at 104x. A nice line of three 9m stars descends to the W.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 38.16 miles.
Distance (LY): 570
Total luminosity (Suns): 30
South 568
Rating: 3 E
ADS 6800; HD 71176; SAO 175783
Position: 0825-2403
A
B
Magnitude
5.28
8.28
Separation PA
—
—
42.4 +
90 +
Year
—
1985
Spectra
Colors
K5 III+K1III Y!!
B!
Notes:
1825: 40.6 @ 85. 14 measurements. A is a spectroscopic binary. May be optical
because Hipparcos gives different distances (510 and 670 light years).
-9-
Zone 234
Observations:
C11 at 98x.
h2441
Rating: 4 E
SAO 175550
Position: 0818-2017
A
B
C
Magnitude
8.68
10.89
8.84
Separation
—
13.8 54.5 -
PA
—
142 +
332 =?
Year
—
1987
1991
Spectra
A1 III
Colors
W
B
W
Notes:
AB 1898: 13.9 @ 141. 6 measurements.
AC 1894: 55.9 @ 152. 10 measurements. Quadrant reversal?
A component is close double of Spects A5 III+G0 III, C component is also a close
double of types A0-2 III+K0 III.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.00 inches.
Separation: AB = 13.4 miles; AC = 52.7 miles.
Distance (LY): 620
Total luminosity (Suns): 20
Aravamudan 1442
Rating: 4 E
HD 69982; SAO 175568
Position: 0819-2134
A
B
Magnitude
8.21
11.40
Separation PA
—
—
15.0
352
Notes:
1 measurement.
- 10 -
Year
—
1920
Spectra
A0
Colors
bW
?
Zone 234
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.20 inches.
Separation: AB = 4.04 miles.
Distance (LY): 173
Total luminosity (Suns): 1.3
Bos 2159
Position: 0800-2157
A
B
Magnitude
8.94
10.30
Rating: 5 E
Separation PA
—
—
6.8 +
304 -
Year
—
1964
Spectra
Colors
A3/5 IV/V W
B
Notes:
1922: 6.2 @ 306. 2 measurements.
The Tycho-2 catalogue indicates a photo-center solution of a known or suspected
double, or one component of a double where the companion has been rejected.
Observations:
C11 at 98x. Nice field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.30 inches.
Separation: AB = 3.42 miles.
Distance (LY): 323
Total luminosity (Suns): 2.9
h4078
Rating: 5 E
ADS 6759; HD 70361; SAO 175643
Position: 0821-2406
A
B
Magnitude
8.59
10.24
Separation PA
—
—
11.1 137 +
- 11 -
Year
—
1947
Spectra
K0 III
Colors
W
R?
Zone 234
Notes:
1835: 12.0 @ 133. 8 measurements.
Observations:
C8 at 104x. It lies between two 9m stars.
Argelander 19
Rating: 5 E
Position: 0827-2138
A
B
Magnitude
8.69
10.06
Separation PA
—
—
19.8 +
277 +
Year
—
1991
Spectra
F0
Colors
W
W
Notes:
1875: 12.0 @ 270. 6 measurements.
Observations:
C8 at 104x.
Moderate
Bur 334
Rating: 3 M
ADS 6614
Position: 0808-2208
A
B
Magnitude
7.59
7.64
Separation PA
—
—
3.2 +
347 -
Year
—
1991
Notes:
AB 1875: 2.0 @ 350. 21 measurement.
Observations:
C8 at 206x. Very rich field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.00 inches.
Separation: AB = 1.10 miles.
Distance (LY): 222
Total luminosity (Suns): 7.30
- 12 -
Spectra
G5 V
Colors
O
yW
Zone 234
Bos 152
See; HDO 114; ADS 6748
Rating: 5 M
Position: 0820-2418
A
B
Magnitude
9.52
10.77
Separation PA
—
—
4.9 333 +
Year
—
1991
Spectra
Colors
W
W
Notes:
1922: 5.7 @ 330. 5 measurements.
Observations:
C11 at 98x. A nice five-star group lies 4 min E.
Difficult
Bhaskaran 9
Rating: 5 D
HD 71833; SAO 175912
Position: 0829-2057
A
B
Magnitude
6.67
11.77
Separation PA
—
—
18.9
30
Year
—
1917
Notes:
1 measurement.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.0 inches.
Separation: AB = 39.5 miles.
Distance (LY): 1,340
Total luminosity (Suns): 304
- 13 -
Spectra
B8 III
Colors
W
?
Zone 234
Zone 234, Map 3
Double Stars
Easy
South 585
Rating: 2 E
HD 76376; SAO 154745
Position: 0855-1815
A
B
Magnitude
5.80
7.06
Separation PA
—
—
64.7 150 +
Year
—
1991
Spectra
K2 III
K2 III
Colors
O
O
Notes:
1894: 67.9 @ 147. 15 measurements. The primary is an infra-red source.
Hipparcos/Tycho data show different distances for these stars; they may be optical. The
stars have different proper motions.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 49.5 inches; B = 25.2 inches.
Separation: AB = 42.9 miles.
Distance (LY): 425
Total luminosity (Suns): 90
Pocock 3
Rating: 3 E
ADS 7027; HD 75423
Position: 0849-1711
A
B
Magnitude
9.25
9.67
Separation PA
—
—
7.7 227 +
Notes:
1895: 8.3 @ 214. 5 measurements.
- 14 -
Year
—
1991
Spectra
F5
Colors
W
W
Zone 234
Observations:
C11 at 98x. It is the northern star of a small cross.
h4100
Rating: 4 E
HD 72029; SAO 154321
Position: 0830-1821
A
B
Magnitude
7.78
10.23
Separation PA
—
—
22.5 +
178 +
Year
—
1915
Spectra
K0 III
Colors
O
R
Notes:
1915: 21.3 @ 177. 3 measurements.
Hipparcos/Tycho mission data show different distances for these stars (1,050 and 74
light years); they may be optical.
Observations:
C8 at 83x.
Fender 15
Rating: 4 E
Position: 0832-1821
A
B
Magnitude
10.46
10.70
Separation PA
—
—
4.7 =
347 =
Year
—
1915
Spectra
Colors
W
W
Notes:
1915: 4.7 @ 347. 2 measurements.
Observations:
C11 at 98x. It lies 3 min N of 7.06m HD 72379, a K0 giant some 246 light years
away (making it about 7 times as bright as the Sun).
Distance (LY): 27
Total luminosity (Suns): 0.007
- 15 -
Zone 234
Aravamudan 647
Rating: 4 E
HD 74573; SAO 154593
Position: 0844-1938
A
B
Magnitude
10.02
12.40
Separation PA
—
—
10.4
153
Year
—
1917
Spectra
A6 IV
Colors
W
B
Notes:
1 measurement.
Observations:
C11 at 98x. It is part of a diamond asterism.
Pocock 2
Rating: 4 E
ADS 7011
Position: 0848-1641
A
B
Magnitude
10.00
10.00
Separation PA
—
—
6.7 90 +
Year
—
1914
Notes:
1894: 6.9 @ 88. 2 measurements.
Observations:
C11 at 98x.
Distance (LY): 178
Total luminosity (Suns): 0.50
- 16 -
Spectra
Colors
W
W
Zone 234
Moderate
Argelander 72
Bur 210; HD 76635; SAO 154781
Rating: 2 M
Position: 0857-1726
A
B
Magnitude
6.56
7.50
Separation PA
—
—
3.8 +
182 =
Year
—
1992
Spectra
F2
Colors
W
W
Notes:
1875: 2.4 @ 182. 41 measurements.
Observations:
C8 at 206x. Faint field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.6 inches.
Separation: AB = 1.29 miles.
Distance (LY): 219
Total luminosity (Suns): 8.3
Bur 207
Rating: 4 M
ADS 6903; HD 73603; SAO 154492
Position: 0839-1944
A
B
Magnitude
6.32
9.40
Separation PA
—
—
4.5 +
103 -
Year
—
1991
Spectra
K5 III
Notes:
1876: 4.3 @ 104. 16 measurements. The primary is an infra-red source.
Observations:
C8 at 206x Webb: R.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 54.3 inches.
Separation: AB = 6.39 miles.
Distance (LY): 910
Total luminosity (Suns): 191
- 17 -
Colors
Y
dO
Zone 234
Difficult
A 3063
Rating: 4 D
ADS 6912; HD 73716; SAO 154503
Position: 0839-1602
A
B
C
Magnitude
7.74
8.80
13.00
Separation
—
0.4 +
12.8 +
PA
—
305 +
234 =
Year
—
1991
1936
Spectra
A0 V
Colors
W
W
?
Notes:
AB 1926: 0.3 @ 296. 6 measurements.
AC 1926: 12.7 @ 234. 2 measurements.
Observations:
C11 at 634x. I got a peanut on a night of good seeing (8 out of 10).
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.00 inches.
Separation: AB = 3,643 feet; AC = 22.4 miles.
Distance (LY): 1,120
Total luminosity (Suns): 109
9 Hya
h4124; ADS 6937; HD 74137; SAO 154552
Rating: 5 D
Position: 0842-1557
A
B
Magnitude
4.87
11.70
Separation PA
—
—
31.0 112 -
Year
—
1920
Spectra
G8 III
Notes:
1898: 33.5 @ 116. 4 measurements. Optical.
It is a member of the Ursa Major moving stream and an infra-red source.
Observations:
C8 at 83x. Star B is very difficult.
- 18 -
Colors
yW
W
Zone 234
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 43.5 inches.
Separation: AB = 9.86 miles.
Distance (LY): 204
Total luminosity (Suns): 36
Deep Sky Objects
Moderate
NGC 2610
Other Names: PK 239+13.1, H IV 35
Astronomical League Program: Herschel II Club
Rating: 4 M
Position: 0833-1609
Type: Pn
Dimensions: 40" x 30"
Class: 4
Magnitude: 13.6
Observations:
C8 at 206x. There is a 13m star on the N edge. The bright red star to the NNE is
6.5m SAO 154395. A 12.5m star is 5 minE. There are several very faint stars in the
field, and the nebula is framed by a large triangle of 7m stars.
Model (where the Sun is a baseball):
Its diameter would be 343 miles.
Distance (LY): 5,500
Luminosity (suns): 9
Difficult
NGC 2665
Other Names: PGC 24634
Rating: 4 D
Position: 0846-1918
Type: Gal
Surface brightness: 13.3
Class: (R' 1)SB(r)a
Dimensions: 2' x 1.5'
- 19 -
Magnitude: 12.2
PA: 144
Zone 234
Observations:
C11 at 193x. Fairly bright nuclear smudge but not much of a halo seen (hazy 12-day
old moon skies).
Distance (LY): 67,000,000
Radial velocity (km/sec): +1,734
Total luminosity (Suns): 4,700,000,000
Zone 234, Map 4
Double Stars
Easy
Aravamudan 648
Rating: 4 E
HD 76623; SAO 154780
Position: 0857-2009
A
B
Magnitude
9.78
10.00
Separation PA
—
—
10.8 =
351 +
Year
—
1991
Notes:
1917: 10.8 @ 349. 2 measurements.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.90 inches.
Separation: AB = 1.14 miles.
Distance (LY): 68
Total luminosity (Suns): 0.080
- 20 -
Spectra
F6/7 V
Colors
W
W
Zone 234
Aravamudan 1058
Rating: 5 E
HD 73962; SAO 176268
Position: 0840-2101
A
B
Magnitude
8.25
11.27
Separation PA
—
—
11.8 +
142 +
Year
—
1991
Spectra
K1 III
Colors
Y
?
Notes:
1917: 11.5 @ 141. 6 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 2.40 inches.
Separation: AB = 26.3 miles.
Distance (LY): 1,430
Total luminosity (Suns): 81
See 106
Rating: 5 E
ADS 6974; HD 74690; SAO 176395
Position: 0845-2347
A
B
C
BC
Magnitude
6.70
11.50
12.00
Separation PA
—
—
17.8 +
239 +
3.6 +
335 +
Notes:
AB 1897: 17.5 @ 224. 7 measurements.
BC 1897: 3.2 @ 333. 9 measurements.
Observations:
C8 at 206x.
- 21 -
Year
—
1960
1960
Spectra
K0
Colors
dO!
?
?
Zone 234
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 22.2 inches.
Separation: AB = 14.4 miles; BC = 2.92 miles.
Distance (LY): 520
Total luminosity (Suns): 41.334
Moderate
Jonckheere 1527
Rating: 5 M
HD 73100
Position: 0836-2005
A
B
Magnitude
8.74
10.46
Separation PA
—
—
6.2 332 -
Year
—
1968
Spectra
A0 V
Colors
W
O
Notes:
1917: 6.7 @ 335. 4 measurements.
May be optical because Hipparcos gives different distances (179 and 86 light years).
Observations:
C11 at 98x.
Difficult
Bur 208
Rating: 5 D
ADS 6914; HD 73752; SAO 176226
Position: 0839-2240
A
B
C
Magnitude
5.05
6.87
10.70
Separation
—
1.3 88.6 +!
PA
—
216 +?
200 -
Year
—
1998
1922
Spectra
G6 IV
K0 V
Colors
Y
?
Y
Notes:
AB 1874: 1.4 @ 30. Over 100 measurements. Quadrant reversal? Star A is a
spectroscopic binary. The AB orbit takes 123 years, with a semi-major axis of 1.70" and
direct motion in a highly inclined orbit.
- 22 -
Zone 234
AC 1874: 72.0 @ 215. 4 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.2 inches; C = 28.1 inches.
Separation: AB = 686 feet; AC = 8.98 miles.
Distance (LY): 65
Total luminosity (Suns): 2.53
Deep Sky Objects
Difficult
NGC 2613
Other Names: H II 266; PGC 23997
Astronomical League Program: Herschel 400 Club
Rating: 5 D
Position: 0833-2258
Type: Gal
Surface brightness: 13.2
Class: SA(s)b
Dimensions: 6' x 2'
Magnitude: 10.9
PA: 113
Observations:
C8 at 65x. With very low surface brightness, it is boxed by four 12m stars. Its axis
runs NW-SE. Use high powers and see if you can distinguish between the oval nucleus
and the soft diffuse glow of the arms. Rich field.
Distance (LY): 63,000,000
Radial velocity (km/sec): +1,678
Total luminosity (Suns): 13,600,000,000
- 23 -
Zone 234
Zone 234 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
h4050
0812-1540
2E
1
Argelander 20
0829-1732
2E
1
South 585
0855-1815
2E
3
Bur 333
0801-2220
3E
2
South 563
0808-1952
3E
1
South 568
0825-2403
3E
2
Pocock 3
Aravamudan
208
Aravamudan
54
Aravamudan
56
0849-1711
3E
3
0805-1802
4E
1
0814-1707
4E
1
0817-1638
4E
1
h2441
Aravamudan
1442
0818-2017
4E
2
0819-2134
4E
2
Bhaskaran 56
0823-1804
4E
1
Fender 14
0827-1910
4E
1
h4100
0830-1821
4E
3
Fender 15
Aravamudan
647
0832-1821
4E
3
0844-1938
4E
3
Pocock 2
Aravamudan
648
0848-1641
4E
3
0857-2009
4E
4
Bos 2159
Aravamudan
206
0800-2157
5E
2
0801-1722
5E
1
Component
A
B
A
B
A
B
A
B
A
B
C
a
BC
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
- 24 -
Mag
8.53
8.94
8.36
8.88
5.80
7.06
7.06
7.60
7.07
7.54
13.00
8.51
5.28
8.28
9.25
9.67
10.41
11.24
8.47
11.07
8.52
11.90
8.68
10.89
8.84
8.21
11.40
10.06
10.41
10.35
10.42
7.78
10.23
10.46
10.70
10.02
12.40
10.00
10.00
9.78
10.00
8.94
10.30
9.53
10.67
Separation
—
23.1 +
—
15.1 —
64.7 —
42.9 +!
—
134.6 +
PA
—
304 =
—
174 +
—
150 +
—
71 +
—
57 +
0.2
7.8
—
42.4 +
—
7.7 —
9.2 +
—
11.1 —
11.9
—
13.8 54.5 —
15.0
—
18.5 —
4.4 +
—
22.5 +
—
4.7 =
—
10.4
—
6.7 —
10.8 =
—
6.8 +
—
10.0
40
300
—
90 +
—
227 +
—
133 +?
—
88 —
349
—
142 +
54.5 —
352
—
271 -?
—
309 —
178 +
—
347 =
—
153
—
90 +
—
351 +
—
304 —
83
Zone 234
Designation
Position
Rating
Map
h4070
0817-1509
5E
1
h4078
0821-2406
5E
2
Argelander 19
Aravamudan
1058
0827-2138
5E
2
0840-2101
5E
4
See 106
0845-2347
5E
4
Argelander 72
0857-1726
2M
3
Bur 334
0808-2208
3M
2
Bur 207
0839-1944
4M
3
Bos 2645
0805-1924
5M
1
Bos 2646
Jonckheere
2638
0806-1904
5M
1
0811-1812
5M
1
0820-2418
5M
2
0836-2005
5M
4
Bos 152
Jonckheere
1527
Component
A
B
A
B
A
B
A
B
A
B
C
BC
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
Mag
7.17
11.80
8.59
10.24
8.69
10.06
8.25
11.27
6.70
11.50
12.00
6.56
7.50
7.59
7.64
6.32
9.40
8.56
12.30
9.02
11.20
8.32
12.20
9.52
10.77
8.74
10.46
Separation
—
30.3 +
—
11.1 —
19.8 +
—
11.8 +
—
17.8 +
PA
—
105 —
137 +
—
277 +
—
142 +
—
239 +
3.6 +
—
3.8 +
—
3.2 +
—
4.5 +
—
10.3 —
10.0
—
80.0
—
4.9 —
6.2 -
335 +
—
182 =
—
347 —
103 —
59 —
92
—
97
—
333 +
—
332 -
Deep Space Objects
Object
NGC 2509
NGC 2610
Ruprecht 46
NGC 2665
NGC 2613
Position
0801-1904
0833-1609
0802-1928
0846-1918
0833-2258
Rating
3M
4M
5M
4D
5D
Map
1
3
1
3
4
Type
Oc (I 1r)
Pn (4)
Oc (II 3p)
Gal ((R' 1)SB(r)a)
Gal (SA(s)b)
- 25 -
Specifications
Surface
Mag
Br
9.3
13.6
9.1
12.2
13.3
10.9
13.2
Population
70
15