Zone 208, Master Map
-06°00'
Monoceros
-04°00'
Normal View
Zone Master, Normal View, 10 deg FOV
γ
β
-10°00'
-08°00'
c
e
Lepus
-12°00'
Canis Major
θ
d
µ
η
θ
γ
07h 04m
06h 56m
06h 48m
06h 40m
06h 32m
06h 24m
06h 16m
06h 08m
06h 00m
-14°00'
f
Zone 208, Map 1
Normal Image
10 Mon
h2289
NGC 2232
h2312
-06°00'
H V 14
Schjellerup 4
-07°00'
NGC 2185
γ
NGC 2182
NGC 2170
Gamma Mon A 666
β
-05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Beta Mon
NGC 2215
STF 914
-09°00'
-08°00'
Barton 376
STF 869
Gallo 400
06h 30m
06h 25m
06h 20m
06h 15m
06h 10m
06h 05m
06h 00m
Zone 208, Map 1
Mirror Image
10 Mon
h2289
NGC 2232
-05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h2312
Gamma Mon
-07°00'
NGC 2185
NGC 2182
γ
NGC 2170
A 666
-06°00'
H V 14
β
NGC 2215
STF 914
-09°00'
-08°00'
Barton 376
Gallo 400
STF 869
06h 00m
06h 05m
06h 10m
06h 15m
06h 20m
06h 25m
06h 30m
Zone 208, Map 2
Normal Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-10°00'
STF 869
Gallo 400
h2318
3 Mon
h2304
Gallo 214
Bur 569
-11°00'
Hussey 108
4 Mon
Canis Major
Lepus
Bos 2594
STF 829
-12°00'
STF 3116
Bur 18
Hough 231
STF 903
-13°00'
Gallo 401
IC 2165
-14°00'
STF 875
STF 843 rej
θ
h3864
06h 30m
STF 832 rej
06h 25m
06h 20m
06h 15m
06h 10m
06h 05m
06h 00m
Zone 208, Map 2
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-10°00'
Gallo 400
STF 869
h2304
Gallo 214
4 Mon
Hussey 108
-11°00'
3 Mon
Bur 569
Lepus
Canis Major
Bos 2594
-12°00'
STF 3116
Bur 18
Hough 231
-13°00'
Gallo 401
IC 2165 STF 903
-14°00'
STF 875
STF 843 rej
STF 832 rej
θ
06h 00m
06h 05m
h3864
06h 10m
06h 15m
06h 20m
06h 25m
06h 30m
Zone 208, Map 3
Normal Image
A 2934
Hipparcos 956
NGC 2250
USNO 17
-05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
A 2932
STF 998
Hipparcos 914
-06°00'
STF 987
STF 967 rej
-07°00'
h45
NGC 2302
NGC 2299
NGC 2309
NGC 2306
-08°00'
NGC 2316
STF 955
-09°00'
Jonckheere 1474
A. G. 328
STF 992
STF 1003
Gallo 410
Ruprecht 4
Jonckheere 1482
h741 h2349
A 2734
Gallo 277
h734
h731
STF 988
07h 00m
06h 55m
06h 50m
06h 45m
06h 40m
06h 35m
06h 30m
Zone 208, Map 3
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-05°00'
A 2934
Hipparcos 956
NGC 2250
USNO 17
A 2932
Hipparcos 914
STF 998
-06°00'
STF 987
STF 967 rej
-07°00'
h45
NGC 2302
NGC 2299
NGC 2309
Ruprecht 4
STF 992
STF 1003
-08°00'
NGC 2306
STF 955
-09°00'
Jonckheere 1474
h734
Gallo 410
h731
Jonckheere 1482
STF 988
h741 h2349
A 2734
06h 30m
06h 35m
06h 40m
06h 45m
06h 50m
06h 55m
07h 00m
Zone 208, Map 4
Normal Image
-10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Jonckheere 1482
h741 h2349
A 2734
Gallo 277
Gallo 275 Rossiter 3475
STF 988
-11°00'
Gallo 411
STF 969
h2337
Holden 83
STF 1004
Hussey 111
-12°00'
STF 970
STF 993 rej
θ
Gallo 274
-13°00'
Gallo 407
Gallo 412
Gallo 242
Gallo 416
Mu CMaµ
-14°00'
STF 971
Howe 14
Holden 81 Ruprecht 1
Holden 80
STF 990
h3864
AC 4
07h 00m
06h 55m
06h 50m
STF 972 rej
Gallo 414
06h 45m
06h 40m
06h 35m
06h 30m
Zone 208, Map 4
Mirror Image
h731
Jonckheere 1482
STF 988
h741 h2349
A 2734
Gallo 277 Rossiter 3475
Gallo 275
h2318
-11°00'
Gallo 411
STF 969
h2337
-10°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Holden 83
STF 1004
STF 993 rej
θ
-12°00'
STF 970
Gallo 274
-13°00'
Gallo 407
Gallo 412
Gallo 242
Holden 81
Howe 14
Ruprecht 1
Holden 80
Gallo 416
-14°00'
STF 971
µ Mu CMa
STF 990
h3864
Gallo 414
06h 30m
06h 35m
06h 40m
06h 45m
AC 4
STF
972 rej
06h 50m
06h 55m
07h 00m
Zone 208
1 Reference Star, 65 Double Stars,
3 Bright Nebulae, 8 Open Clusters
Flamsteed
H
3 Mon................................................... 18
4 Mon................................................... 18
H V 14.................................................... 5
h2304 ................................................... 14
h2312 ..................................................... 5
h2318 ................................................... 17
h2337 ................................................... 36
h2349 ................................................... 39
h3864 ................................................... 34
h45 ....................................................... 26
h731 ..................................................... 22
h734 ..................................................... 20
h741 ..................................................... 39
Hipparcos 914 ...................................... 23
Holden 80............................................. 35
Holden 81............................................. 43
Holden 83............................................. 38
Hough 231............................................ 10
Howe 14............................................... 36
Hussey 108........................................... 16
A
A 2734 ................................................. 32
A 2932 ................................................. 25
A 666 ..................................................... 6
B
Barton 376 ............................................. 4
Beta Mon ............................................... 3
Bos 2594 .............................................. 12
Bur 18 .................................................. 17
Bur 569 ................................................ 19
G
Gallo 214 ............................................. 16
Gallo 242 ............................................. 42
Gallo 274 ............................................. 38
Gallo 275 ............................................. 40
Gallo 277 ............................................. 33
Gallo 400 ............................................... 7
Gallo 401 ............................................. 19
Gallo 407 ............................................. 35
Gallo 410 ............................................. 23
Gallo 411 ............................................. 37
Gallo 412 ............................................. 43
Gallo 416 ............................................. 44
Gamma Mon .......................................... 3
J
Jonckheere 1474 .................................. 22
Jonckheere 1482 .................................. 26
M
Mu CMa............................................... 41
N
NGC 2170 .............................................. 8
NGC 2182 .............................................. 8
NGC 2185 ............................................ 10
NGC 2215 .............................................. 9
-1-
Zone 208
NGC 2250............................................ 30
NGC 2299............................................ 27
NGC 2302............................................ 29
NGC 2306............................................ 28
NGC 2309............................................ 30
STF 869.................................................. 4
STF 875................................................ 13
STF 903................................................ 11
STF 914.................................................. 6
STF 955................................................ 20
STF 967 rej .......................................... 25
STF 969................................................ 37
STF 970................................................ 31
STF 971................................................ 44
STF 987................................................ 27
STF 988................................................ 32
STF 990................................................ 42
STF 992................................................ 21
STF 993 rej .......................................... 33
STF 998................................................ 24
R
Rossiter 3475 ....................................... 40
Ruprecht 1............................................ 45
Ruprecht 4............................................ 29
S
Schjellerup 4 .......................................... 7
STF 1003 ............................................. 26
STF 1004 ............................................. 34
STF 3116 ............................................. 14
STF 829 ............................................... 11
STF 832 rej .......................................... 12
STF 843 rej .......................................... 15
U
USNO 17.............................................. 24
-2-
Zone 208
Zone 208, Map 1
Reference Star
Gamma Mon (5 Mon; HD 43232; SAO 133012)
Position: 0615-0616
Mag : 3.99
Spectrum : K3 III
Color : Y
Assumed distance: 650 light years
Assumed luminosity (suns): 830
Notes:
This star is an infra-red source.
Double Stars
Easy
Beta Mon
Rating: 1 E
11 Mon; Bur 570; STF 919; Herschel's Wonder Star; ADS 5107; SAO 133316
Astronomical League Program: Double Star Club
Position: 0629-0701
A
B
C
D
Magnitude
4.7
5.2
6.1
12.2
Separation
—
7.2 9.9 =
26.4 +
PA
—
133 +
126 +
55 -
Year
—
1991
1991
1932
Spectra
B3 Ve
B3e
Colors
W
W
W
W
Notes:
Discovered by William Herschel in 1781.
AB 1831: 7.3 @ 130. 96 measurements. Star A is a spectroscopic binary and both
stars are rotating so fast (346 and 331 km/sec at the equator) that they have thrown off
gaseous rings. The orbital period (of the spectroscopic binary) is 12.6 years. The visual
pair orbit probably takes around 17,000 years.
AC 1831: 9.9 @ 125. 31measurements. Shell star.
AD 1878: 25.8 @ 56. 5 measurements.
The AD orbit may take 29,000 years.
Herschel called it "one of the most beautiful sights in the heavens."
-3-
Zone 208
Observations:
C8 at 83x. A very neat system. Some observers report a bluish tint to all three stars,
while others see all three as Y. Webb saw them as W and yW.
STF 869
Rating: 2 E
HD 42514; SAO 132921
Position: 0611-0951
A
B
Magnitude
8.18
9.09
Separation PA
—
—
24.5 +
280 +
Year
—
1991
Spectra
F0
F0
Colors
W
pB
Notes:
1830: 24.3 @ 279. 14 measurements. The stars share common proper motion. B
may be a variable of unknown type.
Observations:
C8 at 104x. It forms the SW angle of an 8m-9m triangle.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.6 inches; B = 11.1 inches.
Separation: AB = 8.90 miles.
Distance (LY): 233
Total luminosity (Suns): 3.5
Barton 376
Position: 0616-0745
A
B
Magnitude
9.38
9.39
Rating: 3 E
Separation PA
—
—
6.1 +
295 +
Year
—
1991
Spectra
A2
Colors
W
W
Notes:
1899: 5.5 @ 110. 3 measurements. Quadrant reversal? The PA looks more like 110.
Observations:
C11 at 115x.
-4-
Zone 208
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.65 inches.
Separation: AB = 2.17 miles.
Distance (LY): 228
Total luminosity (Suns): 1.43
H V 14
Rating: 4 E
HD 41434; SAO 132807
Position: 0605-0521
A
B
Magnitude
7.90
10.70
Separation PA
—
—
46.7 +
259 -
Year
—
1984
Spectra
B9
Colors
bW
B
Notes:
1893: 46.0 @ 260. 5 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.00 inches.
Separation: AB = 32.3 miles.
Distance (LY): 443
Total luminosity (Suns): 11
h2312
Rating: 4 E
ADS 4940
Position: 0619-0516
A
B
Magnitude
10.38
10.48
Separation PA
—
—
9.3 197 +?
Year
—
1991
Notes:
1893: 9.5 @ 16. 5 measurements. Quadrant reversal?
-5-
Spectra
Colors
W
W
Zone 208
Observations:
C11 at 115x.
Distance (LY): 76
Total luminosity (Suns): 0.061
STF 914
Rating: 4 E
ADS 5070; HD 45380; SAO 133262
Position: 0627-0731
A
B
Magnitude
6.35
9.34
Separation PA
—
—
21.1 =
299 +
Year
—
1991
Spectra
A0 Vn
Colors
W
?
Notes:
1829: 21.1 @ 298. 15 measurements. The stars show similar proper motions.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.00 inches.
Separation: AB = 13.5 miles.
Distance (LY): 409
Total luminosity (Suns): 44
A 666
Rating: 5 E
ADS 4827; HD 42912; SAO 132979
Position: 0613-0624
A
B
Magnitude
8.42
9.14
Separation PA
—
—
230.0
318
Notes:
1 measurement.
A has a 9.6m companion at 0.5 @ 37 (1995).
-6-
Year
—
1977
Spectra
G5
Colors
yW
B
Zone 208
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.9 inches.
Separation: AB = 179 miles; Aa = 2,060 feet.
Distance (LY): 500
Total luminosity (Suns): 13
Gallo 400
Position: 0623-0952
A
B
Magnitude
9.30
10.20
Rating: 5 E
Separation PA
—
—
17.5
174
Year
—
1904
Spectra
Colors
W
W
Notes:
1 measurement.
Observations:
C11 at 115x. It is fried by a 7m Y star 2 min E.
Schjellerup 4
Rating: 5 E
HD 45518; SAO 133283
Position: 0628-0557
A
B
Magnitude
9.53
11.81
Separation PA
—
—
66.0 +
355 -
Notes:
1905: 63.1 @ 358. 2 measurements.
Observations:
C11 at 115x.
-7-
Year
—
1991
Spectra
G0
Colors
Y
?
Zone 208
Deep Sky Objects
Moderate
NGC 2170
Astronomical League Program: Herschel II Club
Rating: 4 M
Position: 0608-0624
Type: GN
Class: Reflection
Dimensions: 2' x 2'
Notes:
It was discovered in1784 by William
Herschel.
Observations:
C11 at 98x. Small but distinct glow
surrounding the north-most of two 10m stars.
(Okie-Tex Star Party, 2003)
NGC 2170
Reflection nebula
Observed with C11 on 9/26/03
Magnification: 98x
Okie-Tex Star Party
NGC 2182
Astronomical League Program: Herschel II Club
Rating: 4 M
Position: 0610-0620
Type: GN
Class: Reflection
Dimensions: 2.5' x 2.5'
Notes:
It was discovered by William Herschel in 1786.
Observations:
C11 at 98x. Small and very difficult, it resembles a planetary nebula. (Okie-Tex Star
Party, 2003)
-8-
Zone 208
NGC 2182
Reflection nebula
Observed with C11 on 9/26/03
Magnification: 98x
Okie-Tex Star Party
NGC 2215
Other Names: Collinder 90; Raab 35, H VII 20
Astronomical League Program: Herschel 400 Club
Rating: 4 M
Position: 0621-0717
Type: Oc
Dimensions: 11'
Class: II 2m
Cluster population: 40
Magnitude: 8.4
Notes:
It is 350 million years old and lies 30,000 light years from the galactic center and 560
light years below the galactic plane. It contains at least 1 magnetic star.
The brightest star is 10.5m (50 times brighter than the Sun).
Observations:
C8 at 83x. A faint triangular group in a thin field. Small and coarse.
Model (where the Sun is a baseball):
Its diameter would be 3,350 miles with stars 470 miles apart.
Distance (LY): 4,220
Luminosity (suns): 610
-9-
Zone 208
Difficult
NGC 2185
Other Names: H IV 20
Astronomical League Program: Herschel 400 Club
Rating: 5 D
Position: 0611-0613
Type: Gn
Dimensions: 2'
Class: R
Magnitude: 11.5
Notes:
It was discovered by William Herschel in 1784.
Observations:
C8 at 104x. Get Gamma out of the field first. Not much to see. There are four stars
in a trapezoid. If you have a high contrast filter, use it here.
Zone 208, Map 2
Double Stars
Easy
Hough 231
Rating: 3 E
ADS 4941
Position: 0619-1232
A
B
Magnitude
7.86
10.40
Separation PA
—
—
6.6 48 -
Year
—
1991
Spectra
B8 V
Colors
W
pO
Notes:
1887: 6.8 @ 49. 8 measurements.
This pair was listed as h3847, but with an error of two degrees in declination.
- 10 -
Zone 208
Observations:
C11 at 115x. Nice field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.2 inches.
Separation: AB = 17.3 miles.
Distance (LY): 1,680
Total luminosity (Suns): 168
STF 903
Rating: 3 E
ADS 5030; HD 44996; SAO 151461
Position: 0625-1258
A
B
Magnitude
6.12
10.49
Separation PA
—
—
23.2 295 +
Year
—
1931
Spectra
B4 Ve
Colors
W
B?
Notes:
1829: 23.3 @ 294. 7 measurements. Hipparcos/Tycho data show different distances
for these stars; they may be optical.
Observations:
C8 at 83x. Rich field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.0 inches.
Separation: AB = 69.5 miles.
Distance (LY): 1,920
Total luminosity (Suns): 1,124
STF 829
Rating: 4 E
ADS 4582
Position: 0600-1139
A
B
C
BC
Magnitude
9.60
10.90
12.00
Separation PA
—
—
19.3 +
234 5.2 +
219 +
- 11 -
Year
—
1962
1962
Spectra
Colors
Y?
W
No
Zone 208
Notes:
AB 1832: 16.5 @ 239. 10 measurements.
BC 1832: 4.6 @ 218. 9 measurements.
Observations:
C8 at 104x. It is the north-most star of a four-star chain that rules an otherwise empty
field.
Distance (LY): 61
Total luminosity (Suns): 0.05
Bos 2594
Rating: 4 E
HD 40619; SAO 150998
Position: 0600-1142
A
B
Magnitude
8.86
12.20
Separation PA
—
—
36.7 239 -
Year
—
1991
Spectra
F5
Colors
W
W
Notes:
1963: 37.4 @ 241. 2 measurements.
Observations:
C11 at 115x.
This pair lies in the handle of a "sickle" asterism.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.7 inches.
Separation: AB = 12.4 miles.
Distance (LY): 216
Total luminosity (Suns): 1.09
STF 832 rej
Rating: 4 E
HD 40864; SAO 151023
Position: 0601-1432
A
B
Magnitude
9.50
10.30
Separation PA
—
—
24.7 +
88 - 12 -
Year
—
1987
Spectra
A3 V
Colors
W
?
Zone 208
a
Aa
13.10
12.4 +
193 +
1987
No
Notes:
AB 1894: 24.5 @ 90. 7 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical.
Aa 1906: 12.0 @ 190. 2 measurements.
Observations:
C8 at 104x. It is the north-most star of a short 3-star chain.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.10 inches.
Separation: AB = 24.7 miles; Aa = 12.4 miles.
Distance (LY): 640
Total luminosity (Suns): 12
STF 875
Rating: 4 E
ADS 4811
Position: 0612-1309
A
B
Magnitude
8.99
10.08
Separation PA
—
—
4.7 324 -
Year
—
1991
Notes:
1830: 6.1 @ 335. 23 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 25.8 inches.
Separation: AB = 1.00 mile.
Distance (LY): 136
Total luminosity (Suns): 0.495
- 13 -
Spectra
K0
Colors
Y
W
Zone 208
h2304
Rating: 4 E
HD 43024; SAO 151244
Position: 0614-1049
A
B
Magnitude
8.61
11.80
Separation PA
—
—
19.6
76
Year
—
1905
Spectra
A5
Colors
W
?
Notes:
1 measurement.
Observations:
C8 at 104x. It forms a triangle with a 7.9m star (N) and a 9.0m star (W).
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.44 inches.
Separation: AB = 6.69 miles.
Distance (LY): 219
Total luminosity (Suns): 1.5
Moderate
STF 3116
FR CMa; Fox 146 (C); ADS 4978; HD 44458; SAO 151401
Rating: 4 M
Position: 0621-1147
A
B
C
Magnitude
5.50
9.20
11.62
Separation
—
4.0 56.5
PA
—
26 +
274
Year
—
1935
1911
Spectra
B1 Vep
Colors
W
?
No
Notes:
AB 1831: 4.5 @ 19. 17 measurements. The stars share a very small proper motion.
AC 1 measurement.
Star A is a Cepheid variable and a spectroscopic binary. It also rotates at a dizzying
265 kps.
- 14 -
Zone 208
Cepheids are a type of pulsating variable star named after the prototype, Delta Cep
(3.6 - 4.3m in 5.4 days). Their size may change as much as 10% per cycle, and their
temperature varies with their size.
About 700 are known in our Galaxy, plus several thousand in nearby ones. They
typically have luminosities in the 10,000 Suns range and periods that range from 1 to 50
days. The longer the period, the higher the luminosity.
Cepheids are sub-divided into several classes. The classical Cepheids are brighter
than all others, and are often referred to as Type I Cepheids. They are young, massive
stars and found in the spiral arms of galaxies. They average 5 to 10 days per period.
Type II Cepheids tend to be older stars located mostly in the galactic centers and
halos and globular clusters. Their periods average 12 to 30 days in length, and they are
metal poor.
A further sub-class of Type II Cepheids are the W Virginis stars. They are
distinguished by being of a little different mass and chemistry than normal Type II
Cepheids.
All Cepheids show much greater magnitude fluctuations in blue light than in red light.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.8 inches.
Separation: AB = 10.4 miles; AC = 147 miles.
Distance (LY): 1,670
Total luminosity (Suns): 1,446
STF 843 rej
Rating: 5 M
HD 41532; SAO 151096
Position: 0605-1419
A
B
Magnitude
8.38
11.50
Separation PA
—
—
24.3
16
Notes:
1 measurement.
Observations:
C11 at 115x.
- 15 -
Year
—
1904
Spectra
K0 III
Colors
Y!
W
Zone 208
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 46.2 inches.
Separation: AB = 3.48 miles.
Distance (LY): 92
Total luminosity (Suns): 0.311
Gallo 214
Rating: 5 M
ADS 4689
Position: 0606-1052
A
B
Magnitude
11.15
12.20
Separation PA
—
—
5.4
22
Year
—
1903
Spectra
Colors
yW
?
Notes:
1 measurement.
Observations:
C11 at 115x.
Hussey 108
Fox 145 (C); ADS 4897; HD 43716; SAO 151313
Rating: 5 M
Position: 0617-1044
A
B
C
Magnitude
9.22
12.20
12.71
Separation
—
3.0 31.9
PA
—
331 =
257
Notes:
AB 1900: 3.3 @ 331. 7 measurements.
AC 1 measurement.
Observations:
C11 at 115x.
- 16 -
Year
—
1929
1911
Spectra
A3
Colors
W
No
?
Zone 208
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.94 inches.
Separation: AB = 3,485 feet; AC = 7.11 miles.
Distance (LY): 143
Total luminosity (Suns): 0.368
h2318
A 2672 (C); ADS 5108; HD 45731; SAO 151544
Rating: 5 M
Position: 0629-1021
A
B
C
Magnitude
9.42
10.20
11.62
Separation
—
0.6 19.2 -
PA
—
259 286 =
Year
—
1930
1930
Spectra
A0
Colors
W
No
W?
Notes:
AB 1913: 0.7 @ 263. 3 measurements.
AC 1904: 19.4 @ 286. 4 measurements.
Observations:
C11 at 115x.
Difficult
Bur 18
Rating: 3 D
ADS 4891; SAO 151303
Position: 0617-1203
A
B
Magnitude
6.76
8.70
Separation PA
—
—
1.8 =
286 +
Notes:
1876: 1.8 @ 272. 23 measurements.
Observations:
C8 at 280x.
- 17 -
Year
—
1991
Spectra
F2 V
Colors
W
Y
Zone 208
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.10 inches.
Separation: AB = 2.86 miles.
Distance (LY): 1,020
Total luminosity (Suns): 127
4 Mon
Bur 17; ADS 4741; HD 42116; SAO 151154
Rating: 4 D
Position: 0608-1109
A
B
C
Magnitude
6.79
10.80
11.80
Separation
—
3.5 +
9.9 -
PA
—
190 +
257 +
Year
—
1991
1991
Spectra
A2
Colors
W
?
?
Notes:
AB 1872: 3.2 @ 180. 16 measurements.
AC 1872: 8.9 @ 247. 14 measurements.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diamter: A = 6.50 inches.
Separation: AB = 1.36 miles; AC = 3.86 miles.
Distance (LY): 250
Total luminosity (Suns): 9.64
3 Mon
Bur 16; ADS 4615; HD 40967; SAO 151037
Rating: 5 D
Position: 0602-1036
A
B
Magnitude
4.92
8.05
Separation PA
—
—
2.0 +
354 -
Year
—
1991
Spectra
B5 III
Notes:
1872: 1.8 @ 356. 19 measurements. Star A is a spectroscopic binary.
- 18 -
Colors
W
O
Zone 208
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.0 in
Separation: AB = 3.05 mi
Distance (LY): 980
Total luminosity (Suns): 800
Gallo 401
Rating: 5 D
HD 44859; SAO 151442
Position: 0624-1246
A
B
Magnitude
9.64
12.50
Separation PA
—
—
12.4
41
Year
—
1902
Spectra
Colors
W
?
Notes:
1 measurement.
Observations:
C11 at 115x.
Bur 569
Rating: 5 D
ADS 5048; SAO 151478
Position: 0625-1056
A
B
Magnitude
7.63
10.10
Separation PA
—
—
1.7 117 -
Notes:
AB 1877: 1.8 @ 121. 13 measurements.
Observations:
C8 at 280x.
- 19 -
Year
—
1991
Spectra
K0
Colors
W
W
Zone 208
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 23.7 inches.
Separation: AB = 2.14 miles.
Distance (LY): 810
Total luminosity (Suns): 45
Zone 208, Map 3
Double Stars
Easy
h734
Rating: 3 E
ADS 5239
Position: 0636-0927
A
B
Magnitude
9.61
9.76
Separation PA
—
—
7.9 33 -?
Year
—
1991
Spectra
B9
Colors
W
W
Notes:
1893: 8.0 @ 214. 11 measurements. Quadrant reversal?
The stars have different proper motions.
Observations:
C8 at 104x. A 9m star is 5 min NW.
STF 955
AC = South 532; ADS 5336; HD 48061; SAO 133569
Rating: 3 E
Position: 0641-0800
A
B
Magnitude
8.97
9.59
Separation PA
—
—
1.1 +
268 -
- 20 -
Year
—
1997
Spectra
B9
Colors
W
No
Zone 208
C
D
CD
7.90
11.5 +
12 -!!
1991
14.0
167
1880
W
No
Notes:
AB 1830: 0.9 @ 273. 30 measurements. The stars share similar proper motions.
AC 1831: 11.4 @ 188. 30 measurements. Different proper motions. Quadrant
reversal?
CD 1 measurement.
Observations:
C8 at 104x. Moderate field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.32 inches.
Separation: AB = 4,013 feet; AC = 8.02 miles; CD = 9.76 miles.
Distance (LY): 447
Total luminosity (Suns): 12
STF 992
Rating: 3 E
ADS 5597; SAO 133904
Position: 0656-0929
A
B
Magnitude
8.64
9.84
Separation PA
—
—
13.9 +
301 +
Year
—
1991
Notes:
1830: 13.7 @ 298. 15 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.6 inches.
Separation: AB = 12.4 miles.
Distance (LY): 570
Total luminosity (Suns): 23
- 21 -
Spectra
G0
Colors
Y
O?
Zone 208
h731
Rating: 4 E
HD 46060; SAO 133356
Position: 0631-0939
A
B
Magnitude
8.83
10.28
Separation PA
—
—
11.7 34 -
Year
—
1991
Spectra
B8
Colors
W
O
Notes:
1893: 11.8 @ 35. 7 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.49 inches.
Separation: AB = 13.0 miles.
Distance (LY): 710
Total luminosity (Suns): 13
Jonckheere 1474
Position: 0634-0810
A
B
Magnitude
8.85
11.73
Rating: 4 E
Separation PA
—
—
6.7 329 +
Year
—
1986
Notes:
1892: 7.1 @ 326. 3 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 2.86 inches.
Separation: AB = 7.42 miles.
Distance (LY): 710
Total luminosity (Suns): 12.2
- 22 -
Spectra
B5
Colors
bW
?
Zone 208
Hipparcos 914
Rating: 4 E
HD 47340; SAO 133502
Position: 0638-0532
A
B
Magnitude
9.14
11.15
Separation PA
—
—
10.1 161 +
Year
—
1991
Spectra
A0
Colors
W
W
Notes:
1894: 10.2 @ 159. 3 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.54 inches.
Separation: AB = 22.4 miles.
Distance (LY): 1,420
Total luminosity (Suns): 40
Gallo 410
Rating: 4 E
HD 48311; SAO 133599
Position: 0643-0934
A
B
Magnitude
7.58
9.10
Separation PA
—
—
19.8 +
27 =
Notes:
1893: 19.6 @ 27. 4 measurements.
Observations:
C8 at 104x.
- 23 -
Year
—
1991
Spectra
Colors
yW
R
Zone 208
USNO 17
Rating: 4 E
HD 50281; SAO 133805
Position: 0652-0511
A
B
Magnitude
6.59
10.11
Separation PA
—
—
58.7 +
183 +
Year
—
1990
Spectra
K3 V
dM2
Colors
Y
O
Notes:
1894: 57.4 @ 177. 16 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical.
Observations:
C8 at 206x. There are two 10m stars to the S of the primary— don't be fooled by
them! Use high powers to peep B which lies between A and these two impostors!
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.7 inches; B = 50.1 inches.
Separation: AB = 2.56 miles.
Distance (LY): 28
Total luminosity (Suns): 0.0145
Moderate
STF 998
Rating: 2 M
ADS 5618; HD 51359; SAO 133934
Position: 0657-0529
A
B
Magnitude
7.99
8.21
Separation PA
—
—
3.1 =
211 +
Notes:
1831: 3.1 @ 206. 36 measurements.
Observations:
C8 at 206x.
- 24 -
Year
—
1997
Spectra
A5
Colors
W
W
Zone 208
A 2932
Rating: 3 M
ADS 5307; SAO 133537
Position: 0640-0523
A
B
Magnitude
9.52
9.88
Separation PA
—
—
1.8 +
261 +
Year
—
1991
Spectra
F5
Colors
W
W
Notes:
1917: 1.5 @ 80. 6 measurements. Quadrant reversal.
Observations:
C11 at 193x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.2 inches.
Separation: AB = 2.58 miles.
Distance (LY): 920
Total luminosity (Suns): 18
STF 967 rej
Rating: 5 M
ADS 5445; HD 49145; SAO 133664
Position: 0647-0609
A
B
Magnitude
8.34
11.90
Separation PA
—
—
13.0 +
190 -
Year
—
1991
Notes:
1832: 11.5 @ 192. 7 measurements.
Observations:
C8 at 104x. It dominates a faint but rich field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.25 inches.
Separation: AB = 65.9 miles.
- 25 -
Spectra
A0
Colors
W
?
Zone 208
Distance (LY): 3,250
Total luminosity (Suns): 414
Jonckheere 1482
Position: 0654-0958
A
B
Magnitude
11.03
11.50
Rating: 5 M
Separation PA
—
—
6.0
350
Year
—
1941
Spectra
Colors
?
?
Notes:
1 measurement.
Observations:
C8 at 104x. Very, very faint. It gets lost in a moderately rich field that includes STF
988.
h45
Position: 0655-0625
A
B
Magnitude
9.73
11.39
Rating: 5 M
Separation PA
—
—
12.2 77 -
Year
—
1991
Spectra
K0
Colors
Y
W?
Notes:
1893: 14 @ 83. 5 measurements.
Observations:
C11 at 115x. Nice field.
STF 1003
Position: 0657-0930
A
B
Magnitude
9.57
9.92
Rating: 5 M
Separation PA
—
—
3.9 =
322 +
Notes:
1831: 3.9 @ 320. 9 measurements.
- 26 -
Year
—
1991
Spectra
F2
Colors
W
W
Zone 208
Observations:
C8 at 104x. Moderate field.
Difficult
STF 987
Rating: 3 D
ADS 5557; HD 50700; SAO 133855
Position: 0654-0551
A
B
Magnitude
6.40
7.27
Separation PA
—
—
1.3 +
177 +
Year
—
1998
Spectra
A6 Vn
Colors
bW
bW
Notes:
1831: 1.1 @ 164. 35 measurements.
Observations:
C8 at 280x. Very rich field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.20 inches.
Separation: AB = 1.13 miles.
Distance (LY): 560
Total luminosity (Suns): 103
Deep Sky Objects
Easy
NGC 2299
Other Names: NGC 2302
Rating: 4 E
Position: 0652-0705
Type: OC
Cluster population: 40
Magnitude: 8.90
- 27 -
Dimensions: 2.5'
Zone 208
Notes:
Brightest member is about 11.5m.
Observations:
C11 at 115x. Small but nicely packed little knot about 3 min S of a 7m yW star. A
small flat triangle dominates the center. I counted 11 stars.
Moderate
NGC 2306
Other Names: H VIII 51
Rating: 3 M
Position: 0653-0719
Type: Oc
Cluster population: 27
Magnitude: 10.0
Dimensions: 20'
Notes:
It may be an asterism. But if it is a cluster, the HR diagram’s turnoff point suggests
an age of 708 million years.
The age of an open cluster can often be closely estimated by examining an HR
diagram of the entire cluster and looking for where the stars are leaving the Main
Sequence. Here is a diagram for a typical open cluster:
(This diagram is taken from the web site http://www.missioncollege.org/depts/astro/Book/Astro%
20Stars.pdf, May 6, 2006.)
- 28 -
Zone 208
For a young open cluster, the stars will all lie on the Main Sequence diagonal. But as
the larger stars in the cluster mature, they begin to migrate off the Main Sequence and
become Red Giants. The point at which the turnoff occurs tells astronomers what size
stars are currently evolving into Red Giants. Given that we have a fairly good understanding of stellar evolution and how it depends on mass, it is a straightforward (if complex) procedure to determine the time when all the stars of the cluster were on the Main
Sequence (and hence, how old the cluster is).
This technique works for open clusters as well as for globulars.
Observations:
C8 at 104x. Delicate and beautiful, averted vision is a big help. It is framed by a
large triangle of 9m stars. A 9m star to the N is very disruptive.
Ruprecht 4
Position: 0650-0934
Type: OC
Dimensions: 5.0'
Rating: 5 M
Class: IV 1p :b
Magnitude: 12.00
Notes:
The cluster is 794 million years old.
Observations:
C11 at 115x. Very faint (brightest star being 13m), sparse group that scintillates. I
counted 14 stars.
NGC 2302
Other Names: H VIII 39
Astronomical League Program: Herschel II Club
Rating: 5 M
Position: 0652-0704
Type: Oc
Dimensions: 2.5'
Class: III 2m
Cluster population: 30
Magnitude: 8.9
Notes:
It is only 63 million years old and lies 30,500 light years from the galactic center and
190 light years below the galactic plane.
The brightest star is 10.2m (84 times brighter than the Sun).
- 29 -
Zone 208
Observations:
C8 at 104x. Small, and very faint, it lies just N of the open cluster NGC 2306. It is
grainy, and looks best under medium power. Note the triangle of stars near the center.
C11 at 98x. A rich and small knot of stars, it seems to have two main sections-- a thin
NW section, and a richer SE one. (Okie-Tex Star Party, 2003)
Model (where the Sun is a baseball):
Its diameter would be 840 miles with stars 135 miles apart.
Distance (LY): 3,850
Luminosity (suns): 280
Difficult
NGC 2250
Other Names: Collinder 100
Rating: 5 D
Position: 0633-0502
Type: Oc
Dimensions: 7'
Class: IV 2p
Cluster population: 12
Magnitude: 8.9
Notes:
The brightest star is 12m.
Observations:
C8 at 83x. This is a faint, oblong group with an E-W axis. There is a 9m star on the
N edge. Averted vision is a big help with this group.
NGC 2309
Rating: 5 D
Other Names: Melotte 56; Collinder 122; Raab 43; OCL 557, H VI 18
Astronomical League Program: Herschel II Club
Position: 0656-0712
Type: Oc
Dimensions: 4'
Class: I 2m
Cluster population: 40
Magnitude: 10.8
Notes:
The brightest star is 13m and the cluster is 251 million years old.
- 30 -
Zone 208
Observations:
C8 at 104x. It appears as an elliptical, semi-resolved patch (6 stars). It is small and
rich, with a faint doublet at the center. There is an 8m yellow star about 10 min NE— it
causes problems with seeing this faint group.
C11 at 115x. Very, very faint and small group that sparkles with averted vision.
About 15 stars, the brightest being 13th magnitude.
Distance (LY): 8,190
Total luminosity (Suns): 250
Zone 208, Map 4
Double Stars
Easy
STF 970
Rating: 3 E
HD 49387; SAO 151936
Position: 0648-1144
A
B
Magnitude
9.11
9.67
Separation PA
—
—
20.2 +
128 -
Year
—
1991
Spectra
F8
G
Colors
W
dB
Notes:
1830: 20.1 @ 129. 14 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 = 16.0; B = 21.3 inches.
Separation: AB = 3.40 miles.
Distance (LY): 108
Total luminosity (Suns): 0.3
- 31 -
Zone 208
A 2734
Rating: 3 E
ADS 5541
Position: 0652-1014
A
B
Magnitude
9.25
10.23
Separation PA
—
—
3.3 +
157 +
Year
—
1933
Spectra
A0
Colors
W
yO
Notes:
1914: 3.2 @ 156. 4 measurements.
Observations:
C11 at 115x. Very nice field! This pair is the north-most star in a four-star asterism.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.58 inches.
Separation: AB = 2,798 feet.
Distance (LY): 103
Total luminosity (Suns): 0.227
STF 988
Rating: 3 E
HD 50704; SAO 133852
Position: 0654-1002
A
B
Magnitude
9.43
9.69
Separation PA
—
—
33.2 +
265 +
Year
—
1991
Spectra
A2
Colors
W
W
Notes:
1831: 33.1 @ 264. 13 measurements. The stars share a small common proper
motion.
Observations:
C8 at 104x. It lies 5 min E of Jonckheere 1482.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.67 inches.
Separation: AB = 122 miles.
- 32 -
Zone 208
Distance (LY): 2,350
Total luminosity (Suns): 163
Gallo 277
Position: 0656-1017
A
B
Magnitude
10.07
11.00
Rating: 3 E
Separation PA
—
—
6.2 +
146 =
Year
—
1964
Spectra
K0
K0
Colors
W
rO
Notes:
1904: 6.0 @ 146. 3 measurements.
Observations:
C8 at 104x. It lies just W of Gallo 275, and is the middle star of a three-star chain
about 10 min long (all of 9m).
STF 993 rej
Rating: 3 E
HD 51153; SAO 152111
Position: 0656-1152
A
B
Magnitude
8.96
8.98
Separation PA
—
—
36.9 +
240 +
Year
—
1991
Spectra
F0
F
Colors
W
W
Notes:
1902: 36.3 @ 238. 8 measurements. The stars have different proper motions.
Observations:
C8 at 104x. Three bright stars lie to the W.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.0 inches; B = 13.8 inches.
Separation: AB = 472 miles.
Distance (LY): 8,200
Total luminosity (Suns): 2,900
- 33 -
Zone 208
STF 1004
Rating: 3 E
ADS 5643; HD 51848; SAO 152181
Position: 0659-1126
A
B
Magnitude
8.05
9.85
Separation PA
—
—
20.3 +
89 +
Year
—
1991
Spectra
A2
Colors
W
W
Notes:
1830: 18.4 @ 88. 13 measurements. May be optical because Hipparcos gives
different distances (1,000 and 384 light years). Different proper motiohns.
Observations:
C11 at 115x. Nice but faint field.
h3864
Rating: 4 E
ADS 5144; HD 46035; SAO 151583
Position: 0631-1458
A
B
Magnitude
6.75
10.44
Separation PA
—
—
21.2 43 -
Year
—
1983
Spectra
B8 V
Colors
Y
R
Notes:
1902: 21.6 @ 44. 5 measurements.
May be optical because Hipparcos gives different distances (720 and 82 light years).
Observations:
C8 at 104x. Rich field.
- 34 -
Zone 208
Gallo 407
Rating: 4 E
HD 46717; SAO 151651
Position: 0634-1229
A
B
Magnitude
8.65
11.91
Separation PA
—
—
15.2
70
Year
—
1902
Spectra
Colors
W
W
Notes:
1 measurement.
Observations:
C11 at 115x.
Distance (LY): 1,160
Total luminosity (Suns): 38
Holden 80
Rating: 4 E
ADS 5266
Position: 0637-1415
A
B
Magnitude
9.56
9.66
Separation PA
—
—
4.0 312 =?
Year
—
1946
Notes:
1888: 4.3 @ 132. 9 measurements. Quadrant reversal?
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.10 inches.
Separation: AB = 1.00 mile.
Distance (LY): 156
Total luminosity (Suns): 0.550
- 35 -
Spectra
F3/5 IV
Colors
W
W
Zone 208
Howe 14
Rating: 4 E
ADS 5281; HD 47458; SAO 151733
Position: 0638-1406
A
B
Magnitude
8.73
11.10
Separation PA
—
—
9.0 =
34 =
Year
—
1914
Spectra
K4 III
Colors
yO
W
Notes:
1879: 9.0 @ 34. 6 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 53.4 inches.
Separation: AB = 4.17 miles.
Distance (LY): 297
Total luminosity (Suns): 2.53
h2337
Rating: 4 E
ADS 5342; HD 48127; SAO 151792
Position: 0641-1119
A
B
C
Magnitude
8.03
11.25
10.90
Separation
—
2.4 +
18.8 +
PA
—
347 +
102 +
Year
—
1991
1913
Notes:
AB 1904: 1.8 @ 345. 3 measurements.
AC 1904: 18.7 @ 101. 2 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.13 inches.
Separation: AB = 1.36 miles; AC = 10.7 miles.
Distance (LY): 365
Total luminosity (Suns): 7.45
- 36 -
Spectra
A0
Colors
bW
No
?
Zone 208
Gallo 411
Rating: 4 E
HD 48352; SAO 151818
Position: 0643-1046
A
B
Magnitude
7.59
9.50
Separation PA
—
—
23.8
175
Year
—
1904
Spectra
A2
Colors
yW
W
Notes:
1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.88 inches.
Separation: AB = 20.4 miles.
Distance (LY): 550
Total luminosity (Suns): 26
STF 969
Rating: 4 E
ADS 5463
Position: 0648-1107
A
B
Magnitude
6.60
9.88
Separation PA
—
—
7.3 +
317 +
Year
—
1991
Notes:
1830: 6.6 @ 316. 12 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.56 inches.
Separation: AB = 16.5 miles.
Distance (LY): 1,450
Total luminosity (Suns): 408
- 37 -
Spectra
B9
Colors
B
?
Zone 208
Holden 83
Rating: 4 E
ADS 5520; HD 50090
Position: 0651-1126
A
B
Magnitude
9.77
10.10
Separation PA
—
—
2.9 +
163 -
Year
—
1986
Spectra
A0
Colors
W
W
Notes:
1888: 2.8 @ 164. 9 measurements.
Observations:
C11 at 115x!
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.77 inches.
Separation: AB = 2,640 feet.
Distance (LY): 111
Total luminosity (Suns): 0.212
Gallo 274
Olivier 116?; ADS 5590
Rating: 4 E
Position: 0656-1217
A
B
Magnitude
9.86
10.13
Separation PA
—
—
5.0 =
170 +
Year
—
1992
Spectra
A2
Colors
W
W
Notes:
1902: 0.5 @ 169. 6 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.
This may be identical with Olivier 116, a star shown to be 1 minute farther east and 1
minute farther north, but with the same measures. Nothing else is in the area.
Observations:
C11 at 115x.
- 38 -
Zone 208
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.84 inches.
Separation: AB = 1.17 miles.
Distance (LY): 150
Total luminosity (Suns): 0.353
h741
Rating: 5 E
ADS 5516; HD 50067; SAO 152011
Position: 0651-1005
A
B
Magnitude
7.12
10.90
Separation PA
—
—
16.4 +
225 -
Year
—
1905
Spectra
K5 III
Colors
yO
?
Notes:
1904: 15.9 @ 227. 2 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 54.3 inches.
Separation: AB = 39.7 miles.
Distance (LY): 1,550
Total luminosity (Suns): 308
h2349
Rating: 5 E
HD 50029; SAO 152004
Position: 0651-1008
A
B
Magnitude
12.45
12.10
Separation PA
—
—
15.9
286
Notes:
1 measurement.
- 39 -
Year
—
1904
Spectra
A0
Colors
W
?
Zone 208
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.64 inches.
Separation: AB = 571 miles.
Distance (LY): 23,000
Total luminosity (Suns): 18,300
Gallo 275
Rating: 5 E
ADS 5594; HD 51082; SAO 152108
Position: 0656-1013
A
B
Magnitude
8.36
10.96
Separation PA
—
—
7.0 +
264 +
Year
—
1964
Spectra
A0
Colors
W
Y
Notes:
1904: 6.7 @ 261. 2 measurements.
Observations:
C8 at 104x. This star is the E-most star in the three-star chain that also contains Gallo
277.
Rossiter 3475
Rating: 5 E
SAO 152133
Position: 0656-1016
A
B
Magnitude
9.69
9.96
Separation PA
—
—
20.1 158 -
Year
—
1986
Spectra
K0
Colors
Y
Y
Notes:
1904: 20.2 @ 160. 9 measurements.
Hipparcos/Tycho data show different distances for these stars (114 and 780 light
years); they may be optical.
- 40 -
Zone 208
Observations:
C8 at 104x. Three stars lie in a line 5 min W.
Moderate
Mu CMa
18 CMa; STF 997; ADS 5605; HD 51250; SAO 152123
Rating: 2 M
Position: 0656-1403
A
B
C
D
Magnitude
5.30
7.05
10.21
10.48
Separation
—
2.8 86.1 105.7 +
PA
—
343 288 =
62 +
Year
—
1999
1983
1912
Spectra
G5 III
A2
Colors
O
B
W?
W?
Notes:
AB 1831: 3.2 @ 344. 45 measurements.
AC 1865: 88.4 @ 288. 5 measurements.
AD 1865: 101.3 @ 61. 2 measurements. Hipparcos shows the D star to be at a
distance of 63 light years.
The primary is an infra-red source.
Observations:
C8 at 280x. Some observers note Y and B, including Webb. Hartung sees both as
orange.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 39 inches; B = 6.63 inches.
Separation: AB = 3.97 miles; AC = 122 miles; AD = 150 miles.
Distance (LY): 910
Total luminosity (Suns): 520
- 41 -
Zone 208
Gallo 242
Rating: 3 M
ADS 5148; SAO 151585
Position: 0631-1309
A
B
C
Magnitude
6.16
11.08
12.60
Separation
—
35.8 =
30.5
PA
—
70 +
18
Year
—
1983
1963
Spectra
B2 V
Colors
W
?
No
Notes:
AB 1902: 35.8 @ 66. 6 measurements.
AC 1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.2 inches.
Separation: AB = 64.2 miles; AC = 54.7 miles.
Distance (LY): 1,150
Total luminosity (Suns): 303
STF 990
AOT 36 (C); ADS 5569; HD 50849; SAO 152077
Rating: 4 M
Position: 0654-1415
A
B
C
Magnitude
9.14
9.67
13.96
Separation
—
3.2 31.1
PA
—
274 343
Notes:
AB 1831: 3.3 @ 275. 13 measurements.
AC 1 measurement.
Observations:
C11 at 115x.
- 42 -
Year
—
1991
1987
Spectra
B8/9 Ib
Colors
bW
W
?
Zone 208
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.2 inches.
Separation: AB = 3.44 miles; AC = 33.5 miles.
Distance (LY): 690
Total luminosity (Suns): 14
Holden 81
Rating: 5 M
ADS 5295
Position: 0639-1403
A
B
Magnitude
9.36
11.90
Separation PA
—
—
3.9 189 +
Year
—
1928
Spectra
G8 III/IV
Colors
Y
W
Notes:
1888: 4.1 @ 187. 6 measurements.
Observations:
C11 at 115x. A 4.8m yO star is 5 min SW and is a pest!
Gallo 412
Rating: 5 M
HD 48399; SAO 151821
Position: 0643-1257
A
B
Magnitude
8.53
11.07
Separation PA
—
—
14.5 +
178 +
Notes:
1902: 14.3 @ 174. 3 measurements.
Observations:
C11 at 115x.
- 43 -
Year
—
1991
Spectra
Colors
O!
yW
Zone 208
Gallo 416
Rating: 5 M
HD 50739; SAO 152067
Position: 0654-1401
A
B
Magnitude
8.81
13.00
Separation PA
—
—
14.9 +
163 =
Year
—
1987
Spectra
Colors
Y
W?
Notes:
1902: 14.8 @ 163. 2 measurements.
Observations:
C11 at 115x.
Distance (LY): 1,810
Total luminosity (Suns): 81
Difficult
STF 971
Bos 2611 (C); ADS 5472; HD 49546; SAO 151946
Rating: 3 D
Position: 0648-1326
A
B
C
Magnitude
8.18
8.85
8.31
Separation
—
1.3 84.9 -
PA
—
325 166 =
Year
—
1991
1986
Spectra
F5/6 V
Colors
W
W
W
Notes:
AB 1829: 198 @ 331. 20 measurements. May be optical because Hipparcos gives
different distances (199 and 485 light years).
AC 1922: 85.9 @ 166. 7 measurements.
Observations:
C11 at 634x.
- 44 -
Zone 208
Deep Sky Objects
Moderate
Ruprecht 1
Position: 0636-1411
Type: Oc
Dimensions: 11'
Rating: 5 M
Class: III 1p
Cluster population: 50
Magnitude: 11.0
Notes:
The cluster is 575 million years old.
Observations:
C8 at 83x. It is Y-shaped, sparse, and disappointing. A 9m star dominates the S end.
- 45 -
Zone 208
Zone 208 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
Beta Mon
0629-0701
1E
1
STF 869
0611-0951
2E
1
Barton 376
0616-0745
3E
1
Hough 231
0619-1232
3E
2
STF 903
0625-1258
3E
2
h734
0636-0927
3E
3
STF 955
0641-0800
3E
3
STF 970
0648-1144
3E
4
A 2734
0652-1014
3E
4
STF 988
0654-1002
3E
4
STF 993 rej
0656-1152
3E
4
Gallo 277
0656-1017
3E
4
STF 992
0656-0929
3E
3
STF 1004
0659-1126
3E
4
Bos 2594
0600-1142
4E
2
STF 829
0600-1139
4E
2
STF 832 rej
0601-1432
4E
2
H V 14
0605-0521
4E
1
STF 875
0612-1309
4E
2
h2304
0614-1049
4E
2
Component
A
B
C
D
A
B
A
B
A
B
A
B
A
B
A
B
C
D
CD
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
BC
A
B
a
A
B
A
B
A
B
- 46 -
Mag
4.70
5.20
6.10
12.20
8.18
9.09
9.38
9.39
7.86
10.40
6.12
10.49
9.61
9.76
8.97
9.59
7.90
9.11
9.67
9.25
10.23
9.43
9.69
8.96
8.98
10.07
11.00
8.64
9.84
8.05
9.85
8.86
12.20
9.60
10.90
12.00
9.50
10.30
13.10
7.90
10.70
8.99
10.08
8.61
11.80
Separation
—
7.2 9.9 =
26.4 +
—
24.5 +
—
6.1 +
—
6.6 —
23.2 —
7.9 —
1.1 +
11.5 +
PA
—
133 +
9.9 =
26.4 +
—
280 +
—
295 +
—
48 —
295 +
—
33 -?
—
268 11.5 +
14.0
—
20.2 +
—
3.3 +
—
33.2 +
—
36.9 +
—
6.2 +
—
13.9 +
—
20.3 +
—
36.7 —
19.3 +
167
—
128 —
157 +
—
265 +
—
240 +
—
146 =
—
301 +
—
89 +
—
239 —
234 -
5.2 +
—
24.7 +
12.4 +
—
46.7 +
—
4.7 —
19.6
219 +
—
88 193 +
—
259 —
324 —
76
Zone 208
Designation
Position
Rating
Map
h2312
0619-0516
4E
1
STF 914
0627-0731
4E
1
h3864
0631-1458
4E
4
h731
Jonckheere
1474
0631-0939
4E
3
0634-0810
4E
3
Gallo 407
0634-1229
4E
4
Holden 80
0637-1415
4E
4
Hipparcos 914
0638-0532
4E
3
Howe 14
0638-1406
4E
4
h2337
0641-1119
4E
4
Gallo 410
0643-0934
4E
3
Gallo 411
0643-1046
4E
4
STF 969
0648-1107
4E
4
Holden 83
0651-1126
4E
4
USNO 17
0652-0511
4E
3
Gallo 274
0656-1217
4E
4
A 666
0613-0624
5E
1
Gallo 400
0623-0952
5E
1
Schjellerup 4
0628-0557
5E
1
h2349
0651-1008
5E
4
h741
0651-1005
5E
4
Gallo 275
0656-1013
5E
4
Rossiter 3475
0656-1016
5E
4
Mu CMa
0656-1403
2M
4
STF 998
0657-0529
2M
3
Component
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
D
A
B
- 47 -
Mag
10.38
10.48
6.35
9.34
6.75
10.44
8.83
10.28
8.85
11.73
8.65
11.91
9.56
9.66
9.14
11.15
8.73
11.10
8.03
11.25
10.90
7.58
9.10
7.59
9.50
6.60
9.88
9.77
10.10
6.59
10.11
9.86
10.13
8.42
9.14
9.30
10.20
9.53
11.81
12.45
12.10
7.12
10.90
8.36
10.96
9.69
9.96
5.30
7.05
10.21
10.48
7.99
8.21
Separation
—
9.3 —
21.1 =
—
21.2 —
11.7 —
6.7 —
15.2
—
4.0 —
10.1 —
9.0 =
—
2.4 +
18.8 +
—
19.8 +
—
23.8
—
7.3 +
—
2.9 +
—
58.7 +
—
5.0 =
—
230.0
—
17.5
—
66.0 +
—
15.9
—
16.4 +
—
7.0 +
—
20.1 —
2.8 86.1 105.7 +
—
3.1 =
PA
—
197 +?
—
299 +
—
43 —
34 —
329 +
—
70
—
312 =?
—
161 +
—
34 =
—
347 +
18.8 +
—
27 =
—
175
—
317 +
—
163 —
183 +
—
170 +
—
318
—
174
—
355 —
286
—
225 —
264 +
—
158 —
343 86.1 105.7 +
—
211 +
Zone 208
Designation
Position
Rating
Map
Gallo 242
0631-1309
3M
4
A 2932
0640-0523
3M
3
STF 3116
0621-1147
4M
2
STF 990
0654-1415
4M
4
STF 843 rej
0605-1419
5M
2
Gallo 214
0606-1052
5M
2
Hussey 108
0617-1044
5M
2
h2318
0629-1021
5M
2
Holden 81
0639-1403
5M
4
Gallo 412
0643-1257
5M
4
STF 967 rej
Jonckheere
1482
0647-0609
5M
3
0654-0958
5M
3
Gallo 416
0654-1401
5M
4
h45
0655-0625
5M
3
STF 1003
0657-0930
5M
3
Bur 18
0617-1203
3D
2
STF 971
0648-1326
3D
4
STF 987
0654-0551
3D
3
4 Mon
0608-1109
4D
2
3 Mon
0602-1036
5D
2
Gallo 401
0624-1246
5D
2
Bur 569
0625-1056
5D
2
Component
A
B
C
A
B
A
B
C
A
B
C
A
B
A
B
A
B
C
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
C
A
B
A
B
A
B
- 48 -
Mag
6.16
11.08
12.60
9.52
9.88
5.50
9.20
11.62
9.14
9.67
13.96
8.38
11.50
11.15
12.20
9.22
12.20
12.71
9.42
10.20
11.62
9.36
11.90
8.53
11.07
8.34
11.90
11.03
11.50
8.81
13.00
9.73
11.39
9.57
9.92
6.76
8.70
8.18
8.85
8.31
6.40
7.27
6.79
10.80
11.80
4.92
8.05
9.64
12.50
7.63
10.10
Separation
—
35.8 =
30.5
—
1.8 +
—
4.0 56.5
—
3.2 31.1
—
24.3
—
5.4
—
3.0 31.9
—
0.6 19.2 —
3.9 —
14.5 +
—
13.0 +
—
6.0
—
14.9 +
—
12.2 —
3.9 =
—
1.8 =
—
1.3 84.9 —
1.3 +
—
3.5 +
9.9 —
2.0 +
—
12.4
—
1.7 -
PA
—
70 +
30.5
—
261 +
—
26 +
56.5
—
274 31.1
—
16
—
22
—
331 =
31.9
—
259 19.2 —
189 +
—
178 +
—
190 —
350
—
163 =
—
77 —
322 +
—
286 +
—
325 84.9 —
177 +
—
190 +
9.9 —
354 —
41
—
117 -
Zone 208
Deep Sky Objects
Object
NGC 2299
NGC 2306
NGC 2170
NGC 2182
NGC 2215
Ruprecht 1
Ruprecht 4
NGC 2302
NGC 2185
IC 2165
NGC 2250
NGC 2309
Position
0652-0705
0653-0719
0608-0624
0610-0620
0621-0717
0636-1411
0650-0934
0652-0704
0611-0613
0622-1259
0633-0502
0656-0712
Rating
4E
3M
4M
4M
4M
5M
5M
5M
5D
5D
5D
5D
Map
3
3
1
1
1
4
3
3
1
2
3
3
Type
Oc
Oc
Gn (Refl)
Gn (Refl)
Oc (II 2m)
Oc (III 1p)
Oc (IV 1p :b)
Oc (III 2m)
Gn (R)
Pn (3B)
Oc (IV 2p)
Oc (I 2m)
- 49 -
Specifications
Surface
Mag
Br
8.90
10.0
8.4
11.0
12.00
8.9
11.5
12.5
8.9
10.8
Population
40
27
40
50
30
12
40