Zone 210, Master Map
Normal View
-06°00'
-04°00'
Zone Master, Normal View, 10 deg FOV
-10°00'
-08°00'
c
e
Monoceros
d
-14°00'
f
-12°00'
Puppis
09h 04m
08h 56m
08h 48m
08h 40m
08h 32m
08h 24m
08h 16m
08h 08m
08h 00m
Zone 210, Map 1
Normal Image
-05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h787
-06°00'
Bur 904
h2435 NGC 2548
Bur 583
-07°00'
A 549
-08°00'
Hipparcos 1148
-09°00'
h2426
Jonckheere 1512
h2433 h2432
08h 30m
08h 25m
08h 20m
08h 15m
08h 10m
STF 1183
08h 05m
A 3054
08h 00m
Zone 210, Map 1
Mirror Image
-05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h787
A 549
-07°00'
Bur 583
-06°00'
Bur 904
NGC 2548 h2435
-08°00'
Hipparcos 1148
-09°00'
h2426
Jonckheere 1512
A 3054
08h 00m
08h 05m
STF 1183
h2432 h2433
08h 10m
08h 15m
08h 20m
08h 25m
08h 30m
Zone 210, Map 2
Normal Image
-10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-11°00'
NGC 2506
Monoceros
NGC 2525
h782
-12°00'
Puppis
NGC 2539
19 Pup
STF 1178
Barton 1904
-14°00'
NGC 2578
h779
h4070
08h 30m
08h 25m
08h 20m
08h 15m
-13°00'
NGC 2517
08h 10m
08h 05m
08h 00m
Zone 210, Map 2
Mirror Image
-10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-11°00'
NGC 2506
Monoceros
NGC 2525
h782
-12°00'
Puppis
NGC 2539
-13°00'
NGC 2517
19 Pup
STF 1178
-14°00'
NGC 2578
Barton 1904
h779
h4070
08h 00m
08h 05m
08h 10m
08h 15m
08h 20m
08h 25m
08h 30m
Zone 210, Map 3
Normal Image
-05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h2468
-06°00'
Hipparcos 1299
h796
15 Hya
h99
-07°00'
Jonckheere 1535
Bur 407
-08°00'
31 Hya
South 579
17 Hya
STF 1264
H VI 107
-09°00'
Bur 24
Jonckheere 2642
09h 00m
08h 55m
08h 50m
08h 45m
08h 40m
08h 35m
08h 30m
Zone 210, Map 3
Mirror Image
-05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-06°00'
h2468
Jonckheere 1535
h796
-07°00'
Bur 407
15 Hya
31 Hya
South 579
-08°00'
h99
17 Hya
STF 1264
H VI 107
-09°00'
Bur 24
Jonckheere 2642
08h 30m
08h 35m
08h 40m
08h 45m
08h 50m
08h 55m
09h 00m
Zone 210, Map 4
Normal Image
-10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-11°00'
h795
South 584
-12°00'
STF 1261
STF 1260
h4146
-13°00'
Jonckheere 2064
NGC 2612
h4140
12 Hya
-14°00'
h800
A 2366
09h 00m
08h 55m
08h 50m
08h 45m
08h 40m
08h 35m
08h 30m
Zone 210, Map 4
Mirror Image
-10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-11°00'
h795
-12°00'
South 584
STF 1261
STF 1260
-13°00'
Jonckheere 2064
h4146
NGC 2612
h4140
12 Hya
-14°00'
h800
A 2366
08h 30m
08h 35m
08h 40m
08h 45m
08h 50m
08h 55m
09h 00m
Zone 210
1 Reference Star, 39 Double Stars,
3 Open Clusters, 4 Galaxies
Flamsteed
12 Hya.................................................. 23
13 Hya.................................................. 15
15 Hya.................................................. 19
17 Hya.................................................. 15
19 Pup .................................................... 9
h795 ..................................................... 26
h796 ..................................................... 19
h800 ..................................................... 27
h99 ....................................................... 18
Hipparcos 1148 ...................................... 7
Hipparcos 1299 .................................... 22
A
J
A 2366 ................................................. 25
A 3054 ................................................... 6
A 549 ..................................................... 2
Jonckheere 1512 .................................... 4
Jonckheere 1535 .................................. 20
Jonckheere 2064 .................................. 26
Jonckheere 2642 .................................. 21
B
N
Barton 1904 ......................................... 11
Bur 24 .................................................. 22
Bur 407 ................................................ 17
Bur 583 .................................................. 2
Bur 904 .................................................. 6
NGC 2506 ............................................ 11
NGC 2517 ............................................ 13
NGC 2525 ............................................ 14
NGC 2539 ............................................ 12
NGC 2548 .............................................. 8
NGC 2578 ............................................ 14
NGC 2612 ............................................ 28
H
H VI 107 .............................................. 18
h2426 ..................................................... 3
h2432 ..................................................... 5
h2433 ..................................................... 4
h2435 ..................................................... 7
h2468 ................................................... 21
h4140 ................................................... 25
h4146 ................................................... 27
h782 ..................................................... 10
h787 ....................................................... 5
S
South 579 ............................................. 17
South 584 ............................................. 24
STF 1178.............................................. 10
STF 1183................................................ 3
STF 1260.............................................. 23
STF 1261.............................................. 24
STF 1264.............................................. 16
-1-
Zone 210
Zone 210, Map 1
Double Stars
Easy
Bur 583
Rating: 3 E
ADS 6630
Position: 0809-0642
A
B
Magnitude
9.61
9.95
Separation PA
—
—
1.7 72 +
Year
—
1997
Spectra
G5
Colors
Y
Y
Notes:
1878: 1.8 @ 70. 23 measurements.
Observations:
C11 at 339x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 21.2 in.
Separation: AB = 2,957 feet.
Distance (LY): 212
Total luminosity (Suns): 0.88
A 549
Rating: 3 E
ADS 6768; HD 70497
Position: 0822-0649
A
B
Magnitude
8.92
10.71
Separation PA
—
—
4.3 +
146 +
Notes:
1903: 4.2 @ 145. 7 measurements.
-2-
Year
—
1991
Spectra
A0
Colors
W
O
Zone 210
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.47 inches.
Separation: AB = 10.5 miles.
Distance (LY): 1,570
Total luminosity (Suns): 62
h2426
Rating: 4 E
HD 66488; SAO 135430
Position: 0804-0810
A
B
Magnitude
7.43
10.87
Separation PA
—
—
25.0
145
Year
—
1830
Spectra
F8
Colors
W
O?
Notes:
1 measurement.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.4 inches.
Separation: AB = 6.67 miles.
Distance (LY): 171
Total luminosity (Suns): 2.6
STF 1183
A 543; ADS 6588; HD 67159; SAO 135505
Rating: 4 E
Position: 0806-0915
A
B
Magnitude
6.25
7.93
Separation PA
—
—
30.6 328 +
-3-
Year
—
1994
Spectra
A0 IV
A0
Colors
W
B
Zone 210
Notes:
AB 1831: 31.7 @ 327. 28 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. The stars show a similar, but small, proper
motion.
Aitken found two companions to B: 11.70m (1.4 @ 324, 1991) and 13.50m (19.4 @
325, 1959).
Observations:
C8 at 83x. Webb saw them as Y and W, but Franks saw W and B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.7 inches; B = 6.10 inches.
Separation: AB = 37.7 miles.
Distance (LY): 790
Total luminosity (Suns): 184
h2433
Position: 0812-0916
A
B
Magnitude
9.19
10.27
Rating: 4 E
Separation PA
—
—
17.6 324 =
Year
—
1922
Spectra
Colors
O
W
Notes:
1893: 18.2 @ 324. 4 measurements.
Observations:
C11 at 98x.
Jonckheere 1512
Position: 0817-0857
A
B
Magnitude
9.66
11.70
Rating: 4 E
Separation PA
—
—
10.2 95 +
Notes:
1893: 11.1 @ 87. 3 measurements.
-4-
Year
—
1957
Spectra
K2
Colors
Y
W
Zone 210
Observations:
C11 at 98x. Nice field. This pair is part of an 8-star asterism.
h787
Rating: 5 E
HD 71616; SAO 135952
Position: 0828-0644
A
B
Magnitude
9.86
11.47
Separation PA
—
—
22.4 +
291 -
Year
—
1987
Spectra
G5 III
Colors
W
B?
Notes:
1820: 20.0 @ 295. 2 measurements.
Observations:
C8 at 104x. Rather faint.
Moderate
h2432
Rating: 4 M
Position: 0810-0913
A
B
Magnitude
10.25
11.47
Separation PA
—
—
20.1
68
Year
—
1922
Notes:
1 measurement.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.37 inches.
Separation: AB = 2.54 miles.
Distance (LY): 81
Total luminosity (Suns): 0.054
-5-
Spectra
A3
Colors
W
W?
Zone 210
Bur 904
Rating: 4 M
ADS 6674
Position: 0814-0545
A
B
Magnitude
9.17
10.80
Separation PA
—
—
3.3 +
183 +!!
Year
—
1960
Spectra
Colors
W
W
Notes:
1880: 3.2 @ 81. 8 measurements.
Observations:
C11 at 98x. It lies in the beautiful open cluster NGC 2548 (M48).
A 3054
Rating: 5 M
ADS 6525; HD 66071; SAO 135390
Position: 0802-0916
A
B
C
Magnitude
9.64
11.17
12.40
Separation
—
2.1 +
10.6
PA
—
44 354
Year
—
1996
1926
Notes:
AB 1926: 1.6 @ 45. 4 measurements.
AC 1926: 10.6 @ 354. 2 measurements.
Observations:
C11 at 193x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.3 inches.
Separation: AB = 1.00 mile; AC = 5.00 miles.
Distance (LY): 302
Total luminosity (Suns): 1.31
-6-
Spectra
F5
Colors
W
W?
W?
Zone 210
Hipparcos 1148
Rating: 5 M
HD 66393; SAO 135421
Position: 0803-0727
A
B
Magnitude
9.64
11.64
Separation PA
—
—
9.4 +
212 +
Year
—
1991
Spectra
A0
Colors
W
O?
Notes:
1893: 9.2 @ 211. 3 measurements.
Observations:
C11 at 98x.
h2435
Rating: 5 M
ADS 6672
Position: 0814-0545
A
B
C
Magnitude
11.62
12.56
13.76
Separation
—
6.9 79.5 =
PA
—
207 =
219 -
Notes:
AB 1880: 7.0 @ 207. 8 measurements.
AC 1911: 79.5 @ 220. 3 measurements.
Observations:
C11 at 98x.
-7-
Year
—
1960
1960
Spectra
Colors
W
W
?
Zone 210
Deep Sky Objects
Easy
NGC 2548
Rating: 4 E
Other Names: Melotte 85; Collinder 179; Raab 72, M48, H VI 22
Astronomical Leage Program: Messier Club, Herschel 400 Club, Urban Deep Sky Club,
Messier Binocular Club
Position: 0814-0548
Type: Oc
Dimensions: 54'
Class: I 3r
Cluster population: 130
Magnitude: 5.8
Notes:
It was discovered by Messier on February 19, 1771 (although he mis-recorded its
declination by 4o).
It is 300 million years old. It is also 20 light years in diameter. The brightest star is
8.2m (120 times brighter than the Sun).
This cluster lies 29,000 light years from the galactic center and 550 light years above
the galactic plane.
Observations:
C8 at 83x. Very bright and large, it is scattered over a lot of sky. It contains many
doubles and a nice equilateral triangle. Eight stars lie in a N-S line near the center.
William Schart (Killeen, TX, C8) says, "This cluster is shaped like an arrowhead pointing
to the east."
14x70 Binos. Large, spread out; difficult in the turbulent skies.
Model (where the Sun is a baseball):
Its diameter would be 8,600 miles with stars 850 miles apart.
Distance (LY): 2,510
Luminosity (suns): 2,360
-8-
Zone 210
Zone 210, Map 2
Double Stars
Easy
19 Pup
Rating: 3 E
Sh 291; Bur 1064; E = Schjellerup 291; ADS 6647; HD 68290; SAO 153942
Position: 0811-1255
A
B
C
D
E
Magnitude
4.72
11.20
13.20
8.90
9.27
Separation
—
2.2 +
33.3 =
60.6
70.3 +
PA
—
253 +
299 =
276
256 =
Year
—
1899
1898
1899
1985
Spectra
K0 III
A7 V
Colors
Y!
?
?
W
W
Notes:
The primary is an infra-red source.
AB 1889: 2.3 @ 244. 3 measurements. Not resolved in 1936 or 1939 (van den Bos).
AC and AD 1 measurement.
AE 1826: 70.2 @ 256. 11 measurements. A and E have similar proper motions.
Observations:
C8 at 104x. The open cluster NGC 2539 is a nice, faint, jeweled backdrop just to the
NW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 46.2 inches; E = 9.36 inches.
Separation: AB = 3,326 feet; AC = 9.61 miles; AD = 17.5 miles; AE = 20.3 miles.
Distance (LY): 185
Total luminosity (Suns): 38.8
-9-
Zone 210
STF 1178
Rating: 4 E
ADS 6553
Position: 0803-1312
A
B
Magnitude
8.53
8.58
Separation PA
—
—
5.2 +
329 -
Year
—
1991
Spectra
K0 III+
Colors
Y
Y
Notes:
1831: 4.8 @ 330. 17 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 46.2 inches.
Separation: AB = 1.75 miles.
Distance (LY): 216
Total luminosity (Suns): 2.6
h782
Rating: 4 E
HD 69368; SAO 154051
Position: 0816-1134
A
B
Magnitude
9.18
10.56
Separation PA
—
—
10.0
240
Year
—
1820
Notes:
1 measurement.
Observations:
C11 at 98x. A neat little clump of six stars lies 10 min S.
- 10 -
Spectra
F2
Colors
W
W
Zone 210
Barton 1904
Rating: 4 E
SAO 154224
Position: 0825-1404
A
B
Magnitude
10.46
10.59
Separation PA
—
—
2.7 +
232 +
Year
—
1991
Spectra
ApSiCr:
Colors
W
W
Notes:
1902: 2.4 @ 230. 3 measurements.
Observations:
C11 at 98x!
Deep Sky Objects
Moderate
NGC 2506
Rating: 2 M
Other Names: Melotte 80; Collinder 170; Rabe 67, H VI 37
Astronomical League Program: Caldwell Club, Herschel 400 Club
Position: 0800-1047
Type: Oc
Dimensions: 6'
Class: I 2r
Cluster population: 150
Magnitude: 7.6
Notes:
It is 4 billion years old. At least 807 stars belong to this group, and it lies 35,000 light
years from the galactic center and 1,800 light years above the galactic plane.
The brightest star is 10.8m (200 times brighter than the Sun).
Observations:
C8 at 206x. It was semi-resolved at high power (where I counted 30 stars). Very
rich, but faint and dusty. Note the prominent (9m) red star. Dean Williams thinks he saw
nebulosity involved with this cluster. I did not see any. Webb: Includes nebulosity.
"Vicinity gorgeous."
- 11 -
Zone 210
Model (where the Sun is a baseball):
Its diameter would be 4,040 miles with stars 360 miles apart.
Distance (LY): 11,280
Luminosity (suns): 9.080
NGC 2506
Open cluster (I 2 r; 150 stars)
Observed with C8 on 3/26/92
Magnification: 104x
NGC 2539
Rating: 2 M
Other Names: Melotte 83; Collinder 176; Rabe 70, H VII 11
Astronomical League Program: Herschel 400 Club, Urban Deep Sky Club, Binocular
Deep Sky Club
Position: 0811-1250
Type: Oc
Dimensions: 21'
Class: III 2m
Cluster population: 150
Magnitude: 6.5
Notes:
It is 372 million years old. The youngest stars are A0 types. The brightest star is
9.2m (290 times the Sun's brightness).
- 12 -
Zone 210
It lies 30,000 light years from the galactic center and 800 light years above the
galactic plane.
Observations:
C8 at 47x. It has a wedge shape, with
the E tip being nicest (it houses the 5m
yellow star 19 Pup). It is large and rich.
A nice double (18 Pup) is only 2 min away
on the NE side.
C11 at 98x. Bright Y star on the SE
side is Sh 291. Faint, small range in
magnitudes, fairly rich, well-detached. I
counted 32 stars on a hazy 12-day moon
night.
Model (where the Sun is a baseball):
Its diameter would be 8,260 miles with
stars 775 miles apart.
Distance (LY): 4,200
Luminosity (suns): 3,500
NGC 2539
Open cluster (III 2 m; 150 stars)
Observed with C8 on 2/1/92
Magnification: 80x
NGC 2517
Other Names: PGC 22578
Rating: 4 M
Position: 0803-1219
Type: Gal
Surface brightness: 12.5
Class: SAB(rs)0o:
Dimensions: 0.8'
Magnitude: 11.8
PA: 70
Observations:
C8 at 206x. Very sharp, bright nucleus with an extremely faint halo. It lies just W of
a pair of 8.5m stars.
- 13 -
Zone 210
NGC 2578
Other Names: H III 902; PGC 23440
Rating: 4 M
Position: 0821-1319
Type: Gal
Surface brightness: 13.8
Class: SB(r)0/a pec
Dimensions: 2.4'
Magnitude: 12.6
PA: 80
Observations:
C8 at 104x. This one is odd— with direct vision, I saw a fuzzy oval star, but with
averted vision, all I could see was a stellar nucleus! Two 12m stars lie 3 min W.
Radial velocity (km/sec): +4,601
Difficult
NGC 2525
Other Names: H III 877; PGC 22721
Astronomical League Program: Herschel II Club
Rating: 4 D
Position: 0806-1125
Type: Gal
Surface brightness: 13.5
Class: SB(s)c
Dimensions: 2.9'
Magnitude: 11.6
PA: 75
Observations:
C8 at 206x. This galaxy presents a stellar nucleus with a softer halo. It was quite
visible at 104x, but the better view was at 200x. It is bracketed N-S by two field stars,
8.7m to the N and 8.9m to the S.
Distance (LY): 57,000,000
Radial velocity (km/sec): +1,581
Total luminosity (Suns): 5,900,000,000
- 14 -
Zone 210
Zone 210, Map 3
Double Stars
Easy
13 Hya
F Hya; South 579; HD 74395; SAO 136221
Rating: 2 E
Position: 0844-0714
A
B
Magnitude
4.62
8.20
Separation PA
—
—
79.0 +
310 +
Year
—
1990
Spectra
G2 Ib
A0
Colors
D
B
Notes:
1824: 77.9 @ 309. 16 measurements. The primary is an infra-red source.
The system belongs to the Zeta Mon Group.
The pair may be optical.
Observations:
C8 at 104x. Wonderful color contrast!
Rich field to the W.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 27 feet; B = 6.20 inches.
Separation: AB = 74.0 miles.
Distance (LY): 600
Total luminosity (Suns): 435
17 Hya
STF 1295; ADS 7093; HD 76370; SAO 136409
Rating: 2 E
Position: 0856-0757
A
B
Magnitude
6.07
6.32
Separation PA
—
—
3.9 3+
- 15 -
Year
—
1997
Spectra
A3
A5
Colors
W
W
Zone 210
Notes:
1821: 4.3 @ 359. 74 measurements.
The stars have different proper motions.
Both are metallic line stars.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.44 inches; B = 7.23 inches.
Separation: AB = 1.93 miles.
Distance (LY): 318
Total luminosity (Suns): 28
STF 1264
Rating: 3 E
ADS 6943; HD 74188; SAO 136198
Position: 0842-0824
A
B
Magnitude
9.42
9.49
Separation PA
—
—
6.4 +
269 -
Year
—
1991
Spectra
F5
Colors
W
W
Notes:
1828: 5.8 @ 270. 16 measurements. Hipparcos/Tycho data show different distances
for these stars; they may be optical.
Observations:
C8 at 104x. A very bright asterism lies just to the S.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.1 inches.
Separation: AB = 7.79 miles.
Distance (LY): 780
Total luminosity (Suns): 19
- 16 -
Zone 210
South 579
Rating: 3 E
HD 74395; SAO 136221
Position: 0844-0714
A
B
a
Magnitude
4.6
8.2
12.70
Separation
—
79.0 +
57.1
PA
—
310 +
340
Year
—
1990
1903
Spectra
G2 Ib
Colors
Y!
B
No
Notes:
1824: 77.9 @ 309. 16 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars show similar proper
motion.
Aa 1 measurement.
Observations:
C8 at 104x. Wide, but nice colors.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 27 feet.
Separation: AB = 74.0 miles; Aa = 53.5 miles.
Distance (LY): 600
Total luminosity (Suns): 435
Bur 407
Rating: 3 E
ADS 7053; HD 75770
Position: 0852-0647
A
B
C
Magnitude
7.75
8.30
11.39
Separation
—
5.9 92 =
PA
—
166 +
164 =
Notes:
AB 1877: 6.0 @ 165. 10 measurements.
AC 1915: 92 @ 164. 2 measurements.
- 17 -
Year
—
1991
1991
Spectra
A0
Colors
W
O
W
Zone 210
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.03 inches.
Separation: AB = 6.81 miles; AC = 106 miles.
Distance (LY): 740
Total luminosity (Suns): 38
h99
Rating: 4 E
ADS 6900; HD 73350; SAO 136111
Position: 0838-0648
A
B
C
Magnitude
6.82
8.27
13.60
Separation
—
60.0 9.8 +
PA
—
181 -!!
211 +
Year
—
1991
1903
Spectra
G0
A0
Colors
yW
B
No
Notes:
AB 1880: 64.6 @ 211. 12 measurements. May be optical because Hipparcos gives
different distances (77 and 206 light years).
BC 1880: 9.2 @ 210. 2 measurements.
Observations:
C11 at 98x.
H VI 107
Rating: 5 E
HD 74217; SAO 136201
Position: 0842-0830
A
B
Magnitude
6.99
10.53
Separation PA
—
—
93.1 +
151 -
Year
—
1991
Spectra
B9
Colors
W
W?
Notes:
1893: 90.4 @ 152. 6 measurements.
Hipparcos/Tycho mission data show different distances for these stars; they may be
optical.
- 18 -
Zone 210
Observations:
C8 at 104x. It is the 2nd star from the E end of a zigzag group of four 8m-9m stars.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.70 inches.
Separation: AB = 84.3 miles.
Distance (LY): 580
Total luminosity (Suns): 42
h796
Rating: 5 E
HD 74797; SAO 136252
Position: 0846-0643
A
B
Magnitude
9.01
10.90
Separation PA
—
—
14.7 +
131 -
Year
—
1911
Spectra
A2
Colors
W
bW
Notes:
1882: 13.0 @ 133. 4 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.49 inches.
Separation: AB = 3.41 miles.
Distance (LY): 149
Total luminosity (Suns): 0.5
15 Hya
Bur 587; ADS 7050; HD 75737; SAO 136345; H V 20
Rating: 5 E
Position: 0852-0711
A
B
C
D
Magnitude
5.55
7.45
9.60
10.80
Separation
—
1.2 +
46.1 +
54.0 +
PA
—
123 0+
56 +
- 19 -
Year
—
1991
1924
1977
Spectra
A2
Colors
W!
W
W
W?
Zone 210
Notes:
Star A is a spectroscopic binary.
AB 1878 (S. Burnham): 0.5 @ 160. 54 measurements.
AC 1878: 45.8 @ 357. 10 measurements.
AD 1878: 50.0 @ 53. 11 measurements.
The companions are optical.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.88 inches.
Separation: AB = 4,805 feet; AC = 35.1 miles; AD = 41.1 miles.
Distance (LY): 488
Total luminosity (Suns): 110
Jonckheere 1535
Rating: 5 E
ADS 7070; HD 76041; SAO 136372
Position: 0854-0636
A
B
Magnitude
9.75
10.80
Separation PA
—
—
5.6 144 +
Year
—
1991
Notes:
1894: 6.0 @ 142. 4 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 21.4 inches.
Separation: AB = 4.12 miles.
Distance (LY): 472
Total luminosity (Suns): 7
- 20 -
Spectra
G5
Colors
W
O?
Zone 210
Moderate
Jonckheere 2642
Rossiter 4407
Rating: 4 M
Position: 0833-0933
A
B
Magnitude
9.92
10.14
Separation PA
—
—
3.7 +
179 -
Year
—
1991
Spectra
Colors
W
W
Notes:
1940: 3.4 @ 186. 7 measurements.
Observations:
C11 at 98x.
Distance (LY): 186
Total luminosity (Suns): 0.53
h2468
Position: 0848-0524
A
B
Magnitude
7.85
10.30
Rating: 5 M
Separation PA
—
—
24.4 +
347 +
Year
—
1991
Notes:
1894: 23.6 @ 345. 6 measurements.
Observations:
C8 at 83x. I had to use averted vision to glimpse star B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 24.1 inches.
Separation: AB = 127 miles.
Distance (LY): 3,330
Total luminosity (Suns): 670
- 21 -
Spectra
K0
Colors
O
?
Zone 210
Hipparcos 1299
Rating: 5 M
HD 76816; SAO 136455
Position: 0858-0549
A
B
Magnitude
9.05
11.83
Separation PA
—
—
11.8 347 -
Year
—
1991
Spectra
A0
Colors
W
?
Notes:
1896: 12.2 @ 351. 3 measurements.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.51 inches.
Separation: AB = 17.7 miles.
Distance (LY): 960
Total luminosity (Suns): 18
Difficult
Bur 24
Rating: 5 D
ADS 7080; HD 76175; SAO 136388
Position: 0854-0846
A
B
Magnitude
6.72
8.67
Separation PA
—
—
1.2 +
177 +
Notes:
1875: 1.0 @ 172. 26 measurements.
Observations:
C8 at 697x.
- 22 -
Year
—
1991
Spectra
F0
A2
Colors
yW
W
Zone 210
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.56 inches; B = 7.35 inches.
Separation: AB = 1.87 miles.
Distance (LY): 1,000
Total luminosity (Suns): 122
Zone 210, Map 4
Reference Star
12 Hya (D Hya; HD 74918; SAO 154622)
Position: 0846-1333
Mag : 4.32
Assumed distance: 227 light years
Spectrum : G8 III
Color : W
Assumed luminosity (suns): 78
Notes:
Star A is a spectroscopic binary and an infra-red source.
Double Stars
Easy
STF 1260
Rating: 2 E
ADS 6929; HD 73941; SAO 15430
Position: 0841-1210
A
B
Magnitude
7.25
7.58
Separation PA
—
—
5.2 +
302 +
Notes:
1830: 4.9 @ 301. 31 measurements.
Observations:
C8 at 104x.
- 23 -
Year
—
1992
Spectra
A2
A2
Colors
W
W
Zone 210
STF 1261
Rating: 3 E
HD 73940; SAO 154533
Position: 0841-1156
A
B
Magnitude
6.6
9.7
Separation PA
—
—
29.6 303 +
Year
—
1992
Spectra
G5
Colors
Y
pB
Notes:
1831: 29.8 @ 302. 10 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.6 inches.
Separation: AB = 12.5 miles.
Distance (LY): 271
Total luminosity (Suns): 14.1
South 584
Rating: 3 E
HD 76352; SAO 154733
Position: 0855-1122
A
B
Magnitude
6.90
8.84
Separation PA
—
—
64.5 216 +
Year
—
1991
Spectra
A0
Colors
W
V
Notes:
1825: 71.2 @ 211. 12 measurements. The stars have different proper motions.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.69 inches.
Separation: AB = 50.3 miles.
Distance (LY): 500
Total luminosity (Suns): 36
- 24 -
Zone 210
A 2366
Rating: 4 E
ADS 6875; HD 72684; SAO 154398
Position: 0834-1424
A
B
C
Magnitude
8.46
9.98
11.00
Separation
—
66 =
0.4 -
PA
—
139 =
32 -
Year
—
1930
1979
Spectra
A0 IV/V
A1/2 IV
Colors
W
W
No
Notes:
AB 1911: 66 @ 139. 3 measurements.
AC 1911: 0.5 @ 47. 4 measurements.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.7 inches; B = 10.8 inches.
Separation: AB = 32.0 miles; AC = 1,003 feet.
Distance (LY): 311
Total luminosity (Suns): 4.20
h4140
Rating: 4 E
ADS 7020; HD 75342; SAO 154653
Position: 0849-1325
A
B
Magnitude
9.22
10.63
Separation PA
—
—
10.3 =
285 +
Year
—
1991
Spectra
F2/3 V:
Colors
W
?
Notes:
1902: 10.3 @ 284. 8 measurements.
May be optical because Hipparcos gives different distances (371 and 97 light years).
Observations:
C11 at 98x.
- 25 -
Zone 210
Jonckheere 2064
Rating: 4 E
HD 75340; SAO 154651
Position: 0849-1244
A
B
C
BC
Magnitude
8.33
11.46
11.60
Separation PA
—
—
73.6 +
24 3.9 +
Year
—
1950
1950
Spectra
F8 V
Colors
W
?
No
202 =
Notes:
AB 1942: 70.0 @ 25. 2 measurements.
BC 1902: 2.6 @ 202. 3 measurements.
Observations:
C8 at 104x. A 9m star lies 10 min away and another 8 min S.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.60 inches.
Separation: AB = 48.0 miles; BC = 2.54 miles.
Distance (LY): 418
Total luminosity (Suns): 7.34
h795
Rating: 5 E
ADS 6972
Position: 0845-1044
A
B
Magnitude
10.10
11.60
Separation PA
—
—
5.9 +
16 +
Notes:
1820: 3.0 @ 5. 2 measurements.
Observations:
C11 at 98x.
- 26 -
Year
—
1915
Spectra
Colors
W
W
Zone 210
Moderate
h4146
Rating: 5 M
ADS 7062; HD 75916; SAO 154704
Position: 0852-1314
A
B
Magnitude
6.12
11.59
Separation PA
—
—
30.7 108 +
Year
—
1981
Spectra
K0 III
Colors
Y
?
Notes:
1901: 33.8 @ 103. 6 measurements.
May be optical because Hipparcos gives different distances (338 and 34 light years).
Observations:
C8 at 83x. It lies in the center of a 9m quadrangle.
h800
Rating: 5 M
HD 76578; SAO 154774
Position: 0857-1343
A
B
Magnitude
9.93
12.20
Separation PA
—
—
23.9 -! 353 +
Notes:
1820: 30.0 @ 350. 5 measurements.
Observations:
C11 at 98x. A 9m Y star is 5 min E.
- 27 -
Year
—
1981
Spectra
F7/8 V
Colors
W
?
Zone 210
Deep Sky Objects
Moderate
NGC 2612
Other Names: PGC 24028
Rating: 3 M
Position: 0834-1309
Type: Gal
Surface brightness: 13.4
Class: S0Dimensions: 3.2'
Magnitude: 13.0
PA: 115
Observations:
C8 at 206x. Using the 8.3m and 9.0m field stars as guides, look for a faint triangle
(11m stars) to the NW of the guides. The SE leg of this triangle has a "star" in the middle
of the leg. That "star" is this galaxy! It has a bright nucleus with fuzzy edges, but high
power did not bring out much detail.
Radial velocity (k/s): +1,714
- 28 -
Zone 210
Zone 210 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
STF 1260
0841-1210
2E
4
13 Hya
0844-0714
2E
3
17 Hya
0856-0757
2E
3
Bur 583
0809-0642
3E
1
19 Pup
0811-1255
3E
2
A 549
0822-0649
3E
1
STF 1261
0841-1156
3E
4
STF 1264
0842-0824
3E
3
South 579
0844-0714
3E
3
Bur 407
0852-0647
3E
3
South 584
0855-1122
3E
4
STF 1178
0803-1312
4E
2
h2426
0804-0810
4E
1
STF 1183
0806-0915
4E
1
h2433
0812-0916
4E
1
h782
Jonckheere
1512
0816-1134
4E
2
0817-0857
4E
1
Barton 1904
0825-1404
4E
2
A 2366
0834-1424
4E
4
h99
0838-0648
4E
3
Component
A
B
A
B
A
B
A
B
A
B
C
D
E
A
B
A
B
A
B
A
B
a
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
C
- 29 -
Mag
7.25
7.58
4.62
8.20
6.07
6.32
9.61
9.95
4.72
11.20
13.20
8.90
9.27
8.92
10.71
6.60
9.70
9.42
9.49
4.60
8.20
12.70
7.75
8.30
11.39
6.90
8.84
8.53
8.58
7.43
10.87
6.25
7.93
9.19
10.27
9.18
10.56
9.66
11.70
10.46
10.59
8.46
9.98
11.00
6.82
8.27
13.60
Separation
—
5.2 +
—
79.0 +
—
3.9 —
1.7 —
2.2 +
33.3 =
60.6
70.3 +
—
4.3 +
—
29.6 —
6.4 +
—
79.0 +
57.1
—
5.9 92 =
—
64.5 —
5.2 +
—
25.0
—
30.6 —
17.6 —
10.0
—
10.2 —
2.7 +
—
66 =
0.4 —
60.0 9.8 +
PA
—
302 +
—
310 +
—
3+
—
72 +
—
253 +
33.3 =
60.6
256 =
—
146 +
—
303 +
—
269 —
310 +
340
—
166 +
92 =
—
216 +
—
329 —
145
—
328 +
—
324 =
—
240
—
95 +
—
232 +
—
139 =
0.4 —
181 -!!
9.8 +
Zone 210
Designation
Jonckheere
2064
Position
0849-1244
Rating
4E
Map
Component
A
B
C
BC
A
B
A
B
A
B
A
B
A
B
A
B
C
D
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
C
A
B
A
B
A
B
A
B
A
B
4
h4140
0849-1325
4E
4
h787
0828-0644
5E
1
H VI 107
0842-0830
5E
3
h795
0845-1044
5E
4
h796
0846-0643
5E
3
15 Hya
Jonckheere
1535
0852-0711
5E
3
0854-0636
5E
3
h2432
0810-0913
4M
1
Bur 904
Jonckheere
2642
0814-0545
4M
1
0833-0933
4M
3
A 3054
Hipparcos
1148
0802-0916
5M
1
0803-0727
5M
1
h2435
0814-0545
5M
1
h2468
0848-0524
5M
3
h4146
0852-1314
5M
4
h800
Hipparcos
1299
0857-1343
5M
4
0858-0549
5M
3
Bur 24
0854-0846
5D
3
- 30 -
Mag
8.33
11.46
11.60
9.22
10.63
9.86
11.47
6.99
10.53
10.10
11.60
9.01
10.90
5.55
7.45
9.60
10.80
9.75
10.80
10.25
11.47
9.17
10.80
9.92
10.14
9.64
11.17
12.40
9.64
11.64
11.62
12.56
13.76
7.85
10.30
6.12
11.59
9.93
12.20
9.05
11.83
6.72
8.67
Separation
—
73.6 +
PA
—
24 -
3.9 +
—
10.3 =
—
22.4 +
—
93.1 +
—
5.9 +
—
14.7 +
—
1.2 +
46.1 +
54.0 +
—
5.6 —
20.1
—
3.3 +
—
3.7 +
—
2.1 +
10.6
—
9.4 +
—
6.9 79.5 =
—
24.4 +
—
30.7 —
23.9 -!
—
11.8 —
1.2 +
202 =
—
285 +
—
291 —
151 —
16 +
—
131 —
123 46.1 +
54.0 +
—
144 +
—
68
—
183 +!!
—
179 —
44 10.6
—
212 +
—
207 =
79.5 =
—
347 +
—
108 +
—
353 +
—
347 —
177 +
Zone 210
Deep Space Objects
Object
NGC 2548
NGC 2506
NGC 2539
NGC 2612
NGC 2517
NGC 2578
NGC 2525
Position
0814-0548
0800-1047
0811-1250
0834-1309
0803-1219
0821-1319
0806-1125
Rating
4E
2M
2M
3M
4M
4M
4D
Map
1
2
2
4
2
2
2
Type
Oc (I 3r)
Oc (I 2r)
Oc (III 2m)
Gal (S0-)
Gal (SAB(rs)0o:)
Gal (SB(r)0/a pec)
Gal (SB(s)c)
- 31 -
Specifications
Surface
Mag
Br
5.8
7.6
6.5
13.0
13.4
11.8
12.5
12.6
13.8
11.6
13.5
Population
130
150
150