Zone 13, Master Map
Normal View
h2166
h2165
+74°00'
h2179
SAO 4840
h2193
IC 356 h1140
OS 50
h2168
+70°00'
h2164
STF 428 rej
h1139
h1136
h1129
h1127
STF 419
h1133
STF 455
h1141
+69°00'
STF 496 rej
STF 506
STF 421
Gamma Cam
γ
+71°00'
13-1
STF 472
NGC 1485
+72°00'
h2157
STF 312
STF 317
NGC 1469
+68°00'
Kuiper 13
STF 368
h1138
IC 342 Camelopardalis
+67°00'
h1131
OS 54
STF 374
Hussey 1056
h1132
P Muller 391
Berkeley 10
A. G. 71
13-2
Bur 1231
Milburn 392
P Muller 122
OS 52
Bpm 43
Stein 418
Stein 471
Milburn 254
Ball 9
Stein 422
Milburn 256
04h 00m
03h 48m
OSS 36
03h 36m
Stein 460
03h 24m
Stein 409
STF 335
STF 349
03h 12m
03h 00m
+65°00'
LDS 1577
+73°00'
h2173
Vilkki 11
+66°00'
STF 418
+75°00'
Zone Master, Norm al View, 10 deg FOV
Zone 13, Map 1
Normal Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+76°00'
STF 474
h2166
+75°00'
STF 418
h2165
h2179
+74°00'
SAO 4840
h2173
Vilkki 11
+73°00'
LDS 1577
+72°00'
h2193
STF 472
STF 421
h2168
Gamma Cam
+71°00'
γ
OS 50
NGC 1485
h2164
h1129
h1136
h1140
+70°00'
STF 428 rej
h1139
STF 419
h1133
+69°00'
STF 455
NGC 1469
04h 00m
Kuiper 13
03h 48m
h1138
STF 368
03h 36m
03h 24m
03h 12m
03h 00m
Zone 13, Map 1
Mirror Image
+76°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+75°00'
h2166 h2165
STF 418
+74°00'
h2179
SAO 4840
h2173
Vilkki 11
STF 312
+72°00'
h2157
+73°00'
LDS 1577
h2193
γ
h2164
Gamma Cam
+71°00'
STF 421
OS 50
h2168
h1129
+70°00'
STF 428 rej
h1139
h1136
STF 419
h1133
+69°00'
STF 317
Kuiper 13
STF 368
03h 00m
03h 12m
03h 24m
03h 36m
h1138
03h 48m
04h 00m
Zone 13, Map 2
Normal Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+70°00'
h2164
STF 428 rej
h1139
h1129
h1136
STF 419
STF 317
+69°00'
h1133
Kuiper 13
+68°00'
STF 368
h1138
Camelopardalis
IC 342
h1131
OS 54
+67°00'
STF 374
Hussey 1056
h1132
P Muller 391
Berkeley 10
+66°00'
Milburn 392
A. G. 71
Bur 1231
P Muller 122
OS 52
Bpm 43
+65°00'
Stein 418
Stein 471
Stein 422
OSS 36
Stein 460
STF 349
STF 402 rej
Espin 1881
Hussey 1063
03h 48m
03h 36m
STF 335
Trumpler 3
P Muller 37
03h 24m
03h 12m
03h 00m
+64°00'
Milburn 254
Zone 13, Map 2
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
h1129
+70°00'
STF 428 rej
h1139
h2164
h1136
STF 419
+69°00'
h1133
STF 317
Kuiper 13
STF 368
Camelopardalis
IC 342
+68°00'
h1138
h1131
OS 54
+67°00'
STF 374
Hussey 1056
h1132
A. G. 71
Bur 1231
P Muller 122
OS 52
+66°00'
P Muller 391
Berkeley 10
Milburn 392
Bpm 43
+65°00'
Stein 418
Stein 471
Ball 9
+64°00'
Milburn 254
Stein 422
Stein 409
Stein 460
STF 335
OSS 36
STF 349
STF 402 rej
Trumpler 3
Espin 1881
P Muller 37
03h 00m
03h 12m
03h 24m
03h 36m
03h 48m
Zone 13
Index
1 Reference Star; 32 Double Stars;
1 Open Cluster; 1 Galaxy
A
L
A. G. 71.................................................... 15
LDS 1577................................................... 4
B
M
Berkeley 10 ............................................. 22
Bpm 43 ..................................................... 19
Bur 1231 .................................................. 14
Milburn 392 ............................................. 16
O
Gamma Cam............................................ 11
OS 50........................................................ 10
OS 52........................................................ 18
OS 54........................................................ 14
H
P
h1129 .......................................................... 3
h1131 ........................................................ 17
h1132 ........................................................ 12
h1133 .......................................................... 8
h1136 .......................................................... 8
h1138 .......................................................... 4
h1139 .......................................................... 5
h2164 .......................................................... 2
h2168 .......................................................... 3
h2173 .......................................................... 7
Hussey 1056 ............................................ 18
P Muller 122............................................ 17
P Muller 391............................................ 21
G
S
I
SAO 4840 .................................................. 2
Stein 418 .................................................. 16
Stein 471 .................................................. 17
STF 368 ................................................... 20
STF 374 ................................................... 13
STF 419 ..................................................... 9
STF 421 ..................................................... 9
STF 428 rej ................................................ 5
STF 455 ..................................................... 6
IC 342....................................................... 22
V
K
Vilkki 11 .................................................... 6
Kuiper 13 ................................................. 15
-1-
Zone 13
Zone 13, Map 1
Reference Star
SAO 4840
Other name(s): HD 19275; SAO 4840
Rating: na
Position: 0312+7423
A
Magnitude
4.84
Distance (LY): 162
Separation PA
—
—
Year
—
Spectra
A2 Vn
Colors
W
Total luminosity (Suns): 25
Double Stars
Easy
h2164
Other name(s): ADS 2291; HD 18576
Rating: 4 E
Position: 0304+7039
A
B
Magnitude
8.58
10.82
Separation PA
—
—
5.4 +
320 =
Year
—
1993
Notes:
1830: 4.5 @ 320. 10 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.34 inches.
Separation: AB = 6.57 miles.
Distance (LY): 780
Total luminosity (Suns): 19.8
-2-
Spectra
A0
Colors
W
L?
Zone 13
h1129
Rating: 5 E
Position: 0305+7012
A
B
Magnitude
9.75
10.08
Separation PA
—
—
44.6 348 -
Year
—
1991
Spectra
A5
Colors
W
W
Notes:
1897: 46.6 @ 349. 8 measurements.
Hipparcos gives discordant distances-- 700 light years to A, 231 to B.
Observations:
C11 at 115x.
h2168
Other name(s): SAO 4830
Rating: 5 E
Position: 0308+7125
A
B
Magnitude
9.39
11.29
Separation PA
—
—
18.3 +
296 +
Year
—
1991
Spectra
K0
Colors
W
?
Notes:
1893: 17.1 @ 293. 4 measurements.
Hipparcos/Tycho mission data show different distances for these stars (480 and 40
light years); they may be optical.
Observations:
C8 at 104x. B looks more like 12.5m.
-3-
Zone 13
LDS 1577
Other name(s): HD 22500; SAO 4966
Rating: 5 E
Position: 0343+7324
A
B
Magnitude
8.61
10.59
Separation PA
—
—
72.7 240 +
Year
—
1991
Spectra
F8
Colors
W
?
Notes:
1896: 73.0 @ 239. 4 measurements.
Observations:
C8 at 104x. Faint but rich field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.4 inches.
Separation: AB = 70.3 miles.
Distance (LY): 620
Total luminosity (Suns): 12
h1138
Rating: 5 E
Position: 0345+6822
A
B
Magnitude
9.99
11.90
Separation PA
—
—
11.6 +
332 +
Year
—
1971
Notes:
1909: 10.6 @ 330. 2 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.84 inches.
Separation: AB = 1.62 miles.
Distance (LY): 90
Total luminosity (Suns): 0.075
-4-
Spectra
A0
Colors
W
?
Zone 13
STF 428 rej
Other name(s): HD 23101; SAO 4991
Rating: 5 E
Position: 0348+7033
Magnitude
A 8.90
B 11.10
Aa 13.50
Separation
—
25.3 21.5
PA
—
144 +
173
Year
—
1985
1904
Spectra
A2 V?
Colors
W
?
No
Notes:
AB 1892: 26.5 @ 143. 5 measurements.
Aa 1 measurement.
Observations:
C8 at 104x. A 6m star lies to the N.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.96 inches.
Separation: AB = 37.5 miles; Aa = 31.9 miles.
Distance (LY): 950
Total luminosity (Suns): 23
h1139
Other name(s): HD 23602; SAO 5015
Rating: 3 E
Position: 0352+7030
A
B
Magnitude
7.49
9.61
Separation PA
—
—
47.2 177 =
Year
—
1991
Spectra
A3
Colors
yW
B
Notes:
1892: 47.4 @ 177. 9 measurements.
Hipparcos/Tycho mission data show different distances for these stars (441 and 1,120
light years); they may be optical. The stars have a small difference in proper motion.
Observations:
C8 at 104x.
-5-
Zone 13
STF 455
Other name(s): ADS 2851; HD 24297; SAO 12964
Rating: 4 E
Position: 0357+6931
A
B
C
D
Magnitude
8.42
9.21
14.00
12.40
Separation
—
12.0 +
58.3 =
96.3
PA
—
167 =
332 =
211
Year
—
1991
1910
1909
Spectra
G5 IV?
Colors
oW
W?
No
?
Notes:
AB 1827: 11.9 @ 167. 19 measurements. The stars show similar proper motions.
AC 1 measurement.
AD 1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.1 inches.
Separation: AB = 13.1 miles; AC = 63.7 miles; AD = 105 miles.
Distance (LY): 700
Total luminosity (Suns): 30.42
Moderate
Vilkki 11
Rating: 5 M
Position: 0315+7340
A
B
Magnitude
11.09
11.60
Separation PA
—
—
7.0
21
Year
—
1986
-6-
Spectra
Colors
?
?
Zone 13
Notes:
1 measurement.
Observations:
C11 at 115x. It lies 7 min S of an 8m star.
Distance (LY): 487
Total luminosity (Suns): 1.10
h2173
Other name(s): HD 19615; SAO 4858
Rating: 5 M
Position: 0315+7352
A
B
Magnitude
6.57
12.40
Separation PA
—
—
47.0
163
Year
—
1904
Spectra
K0
Colors
O!
?
Notes:
1 measurement.
Observations:
C8 at 104x. It is the W vertex of a large 7m triangle. I needed averted vision to pick
up B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 22.0 inches.
Separation: AB = 57.2 miles.
Distance (LY): 780
Total luminosity (Suns): 111
-7-
Zone 13
h1133
Other name(s): ADS 2455; HD 20273; SAO 12703
Rating: 5 M
Position: 0320+6944
A
B
Magnitude
6.60
12.66
Separation PA
—
—
30.6 =
204 +
Year
—
1909
Spectra
B9.5 IV
Colors
W
?
Notes:
1896: 30.6 @ 203. 5 measurements.
Observations:
C11 at 115x. Use averted vision to pick up B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.0 inches.
Separation: AB = 31.0 miles.
Distance (LY): 650
Total luminosity (Suns): 76.2
h1136
Rating: 5 M
Position: 0336+7012
A
B
Magnitude
10.82
12.33
Separation PA
—
—
11.8 221 +
Year
—
1991
Notes:
1893: 12.2 @ 219. 4 measurements.
Observations:
C11 at 115x.
Distance (LY): 160
Total luminosity (Suns): 0.117
-8-
Spectra
Colors
W
bW
Zone 13
STF 419
Other name(s): ADS 2678; HD 22553; SAO 12872
Rating: 3 M
Position: 0343+6951
A
B
C
BC
Magnitude
7.90
7.90
9.12
Separation PA
—
—
2.9 74 +
0.4 =
: 112 -
Year
—
1998
1991
1991
Spectra
A2 IV
A3 IV?
Colors
W
W
No
Notes:
AB 1828: 3.1 @ 73. 37 measurements.
BC 1894: 0.4 @ 167. 8 measurements.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.62 inches; B = 5.62 inches.
Separation: AB = 3.98 miles; BC = 2,899 feet.
Distance (LY): 880
Total luminosity (Suns): 142
STF 421
Other name(s): ADS 2718; HD 22912; SAO 4984
Rating: 5 M
Position: 0346+7137
A
B
Magnitude
6.97
10.63
Separation PA
—
—
12.5 +
236 +
Year
—
1991
Spectra
G5 III
Colors
Y
W
Notes:
1829: 12.4 @ 235. 10 measurements. The stars have different proper motions.
Observations:
C8 at 206x.
-9-
Zone 13
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.7 inches.
Separation: AB = 9.52 miles.
Distance (LY): 488
Total luminosity (Suns): 31
Difficult
OS 50
Other name(s): ADS 2377; HD 19475; SAO 4846
Rating: 3 D
Position: 0313+7134
A
B
C
Magnitude
7.64
8.54
13.2
Separation
—
1.0 +
27.2 +
PA
—
159 299 +
Year
—
1998
1931
Spectra
F8 V
Colors
W
W
No
Notes:
AB 1843: 0.9 @ 236. 99 measurements. The orbital period has been computed to be
344.9 years (Popovic, 1972).
AC 1900: 27 @ 296. 2 measurements.
Observations:
C8 at 280x. Notched.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.4 inches.
Separation: AB = 1,310 feet; AC = 6.7 miles.
Distance (LY): 159
Total luminosity (Suns): 2.7
- 10 -
Zone 13
Gamma Cam
Other name(s): Seginus; h2200; HD 23401; SAO 5006
Rating: 4 D
Position: 0350+7120
A
B
C
Magnitude
4.63
13.20
9.07
Separation
—
56.2 +
106.0 -
PA
—
240 85 -
Year
—
1909
1991
Spectra
A0 IV
Colors
yW
?
W
Notes:
AB 1904: 56.1 @ 241. 2 measurements.
AC 1892: 106.1 @ 86. 10 measurements.
This star has a fairly high rotational velocity (189 kps).
James Kaler's Star Notes:
At first, Seginus seems to be yet another boring white class A (A7) star (only boring
of course because there are so many of them!). It has a number of things to recommend it,
however. First, unlike the class A stars of the Big Dipper, it is a giant. Class A giants are
different from the cool giants, not as large. They are stars that are just now beginning
their destinies with the "real" giants (those cool ones of classes K and M that really are
large), and are just now starting to swell. Its surface temperature is 7,600 Kelvin, and
radius only about 3.5 times solar (hardly "giant" status). Not only is Seginus also still a
rapid rotator (giants slow down as they expand), spinning at least 139 kilometers per
second, but it is also variable, of a class known as a "Delta Scuti" star. These are all
dwarfs and giants of classes A and cooler F that chatter away in brightness by a few
percent as a result of their internal constructions. Seginus varies by around 5 percent,
pulsating over a period of about 7 hours. It is also been found to be a "non- radial"
pulsator over a much shorter period, some parts of the star moving outward while others
move inward. Seginus has a visible 12th magnitude "companion" about half a minute of
arc away from it, but the little star fools us in being only accidentally in the line of sight.
"Speckle" observations, however (in which the astronomer compiles myriad short
exposures to overcome twinkling), reveal that Seginus really does have a companion only
0.07 seconds of arc distant from it (which corresponds to 1.8 astronomical units, a bit
farther than Mars is from the Sun). Nothing whatever is known about the little star. With
a mass of around 2.5 times that of the Sun, Seginus has recently shut down core hydrogen
fusion (or at least it will very soon), and is roughly what the brighter Dipper stars will
become when they begin to die. Oddly, it is surrounded by a small cloud of dust visible
only through its infrared radiation. Why it should exist is a mystery.
- 11 -
Zone 13
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.0 inches.
Separation: AB = 7.45 miles; AC = 14.0 miles.
Distance (LY): 85
Total luminosity (Suns): 34
Zone 13, Map 2
Double Stars
Easy
h1132
Other name(s): ADS 2391
Rating: 2 E
Position: 0315+6702
A
B
Magnitude
9.74
9.86
Separation PA
—
—
7.2 +
25 +
Year
—
1991
Spectra
Notes:
1893: 6.8 @ 21. 8 measurements.
Hipparcos gives discordant distances-- 800 light years for A, 185 for B.
Observations:
C11 at 115x.
- 12 -
Colors
W
W
Zone 13
STF 374
Other name(s): ADS 2494; HD 20711
Rating: 2 E
Position: 0324+6728
A
B
Magnitude
7.74
9.10
Separation PA
—
—
11.4 +
296 +
Year
—
1996
Spectra
F8
Colors
W
W
Notes:
1831: 10.8 @ 295. 21 measurements. Hipparcos gives discordant distances-- 520
and 585 light years. Different proper motions.
Observations:
C11 at 115x.
Σ374
Observed with C11 on 11/19/03
Magnification: 98x
- 13 -
Zone 13
OS 54
Other name(s): ADS 2576; HD 21476; SAO 12792
Rating: 3 E
Position: 0332+6735
A
B
C
Magnitude
7.65
9.36
Separation
—
22.6 99.1 +
PA
—
0+
114 =
Year
—
1991
1985
Spectra
F0 IV
Colors
W
R
No
Notes:
AB 1843: 25.3 @ 354. 22 measurements. The stars show similar proper motions.
AC 1893: 96.5 @ 114. 4 measurements.
Observations:
C8 at 104x. Dembowski saw them as Y and G. A nice triangle of 7.5m stars lies 10
min S. Very rich field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.5 inches.
Separation: AB = 19.4 miles; AC = 85.0 miles.
Distance (LY): 550
Total luminosity (Suns): 24
Bur 1231
Other name(s): ADS 2698; HD 22776; SAO 12881
Rating: 4 E
Position: 0344+6559
A
B
C
Magnitude
7.81
12.40
8.69
Separation
—
2.6 =
87.1 +
PA
—
2259 +
Year
—
1985
1991
Spectra
F0
A3
Colors
W
No
W
Notes:
AB 1891: 2.6 @ 15. 6 measurements.
AC 1891: 84 @ 252. 12 measurements.
May be optical because Hipparcos gives different distances (201 and 786 light years).
- 14 -
Zone 13
Observations:
C8 at 104x. A 12m star is 100" @ 210.
A. G. 71
Other name(s): ADS 2719
Rating: 4 E
Position: 0346+6606
A
B
Magnitude
10.33
10.54
Separation PA
—
—
8.0 =
242 =
Year
—
1926
Spectra
Colors
W
W
Notes:
1891: 8.0 @ 242. 7 measurements.
Observations:
C11 at 115x. This pair forms one vertex of a diamond of 10m and 11m stars.
Distance (LY): 78
Total luminosity (Suns): 0.06
Kuiper 13
Other name(s): HD 23189
Rating: 3 E
Position: 0348+6840
A
B
Magnitude
9.17
9.41
Separation PA
—
—
17.2 +
14 -
Year
—
1991
Spectra
M0
Colors
yO
bW
Notes:
1934: 17.0 @ 16. 26 measurements. Physical; orbit calculated. The stars share
common proper motion.
Observations:
C11 at 115x.
- 15 -
Zone 13
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.2 inches.
Separation: AB = 1.50 miles.
Distance (LY): 57
Total luminosity (Suns): 0.102
Moderate
Stein 418
Other name(s): SAO 12560
Rating: 5 M
Position: 0301+6524
A
B
Magnitude
10.14
11.02
Separation PA
—
—
8.9 +
68 +
Year
—
1991
Spectra
Colors
W
W
Notes:
1893: 7.7 @ 64. 4 measurements.
Observations:
C11 at 115x.
Distance (LY): 89
Total luminosity (Suns): 0.079
Milburn 392
Other name(s): ADS 2266; SAO 12561
Rating: 5 M
Position: 0301+6635
A
B
Magnitude
9.77
10.50
Separation PA
—
—
6.9
25
Notes:
1 measurement.
Observations:
C11 at 115x.
- 16 -
Year
—
1925
Spectra
G0
Colors
yW
bW
Zone 13
P Muller 122
Rating: 4 M
Position: 0301+6548
A
B
Magnitude
9.99
10.60
Separation PA
—
—
6.2 331 +
Year
—
1989
Spectra
G5
Colors
yW
W
Notes:
1971: 6.6 @ 329. 4 measurements.
Observations:
C11 at 115x.
h1131
Rating: 4 M
Position: 0307+6744
A
B
Magnitude
9.74
11.74
Separation PA
—
—
18.5 +
120 -
Year
—
1991
Spectra
B8
Colors
W
W
Notes:
1908: 18.2 @ 121. 4 measurements.
Observations:
C11 at 115x.
Stein 471
Rating: 5 M
Position: 0339+6513
A
B
Magnitude
10.99
11.10
Separation PA
—
—
12.6
281
- 17 -
Year
—
1908
Spectra
Colors
?
?
Zone 13
Notes:
1 measurement.
Observations:
C11 at 115x. It lies in an arc of four 11m stars.
Difficult
OS 52
Other name(s): ADS 2436; HD 20104
Rating: 5 D
Position: 0318+6540
A
B
C
Magnitude
6.41
6.87
12.70
Separation
—
0.5 +
80.5
PA
—
63 -!
223
Year
—
1999
1912
Spectra
A2 V
Colors
W
?
?
Notes:
AB 1843: 0.4 @ 157. 99 measurements. A premature orbit has been calculated.
AC 1 measurement.
Observations:
C11 at 115x. At 634x, AB was a peanut. C was difficult.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.5 inches.
Separation: AB = 2,472 feet; AC = 75.0 miles.
Distance (LY): 600
Total luminosity (Suns): 127
Hussey 1056
Other name(s): ADS 2452
Rating: 2 D
Position: 0320+6714
A
B
Magnitude
8.00
8.14
Separation PA
—
—
1.1 +
264 - 18 -
Year
—
1998
Spectra
F8 V
Colors
W
W
Zone 13
Notes:
1904: 0.6 @ 282. 24 measurements.
Observations:
C11 at 339x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.50 inches.
Separation: AB = 2,048 feet.
Distance (LY): 226
Total luminosity (Suns): 4.7
Bpm 43
Other name(s): BK Cam; HD 20336
Rating: 5 D
Position: 0320+6539
A
B
Magnitude
4.84
12.41
Separation PA
—
—
120.9 58 =
Year
—
1959
Spectra
B2.5 Vne
Colors
W
?
Notes:
1911: 121.5 @ 58. 2 measurements.
The primary is a shell star, with light and spectrum variable. It may also be a longperiod spectroscopic binary.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.60 inches.
Separation: AB = 151 miles.
Distance (LY): 800
Total luminosity (Suns): 581
- 19 -
Zone 13
STF 368
Other name(s): ADS 2468; SAO 12715
Rating: 3 D
Position: 0322+6830
A
B
C
Magnitude
9.27
9.36
13.33
Separation
—
2.0 64.9 -
PA
—
338 -?
37 =
Year
—
1998
1925
Notes:
AB 1831: 2.3 @ 162. 21 measurements. Quadrant reversal?
AC 1911: 66.0 @ 37. 2 measurements.
Observations:
C11 at 339x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.4 inches.
Separation: AB = 1.65 miles; AC = 53.7 miles.
Distance (LY): 530
Total luminosity (Suns): 8.4
See sketch, next page.
- 20 -
Spectra
F8 IV
Colors
W
W
No
Zone 13
Σ368
Observed with C11 on 11/19/03
Magnification: 654x
P Muller 391
Other name(s): SAO 12842
Rating: 3 D
Position: 0339+6640
A
B
Magnitude
9.46
10.32
Separation PA
—
—
2.3 +
224 +
Notes:
1896: 2.2 @ 219. 7 measurements.
Observations:
C11 at 339x.
- 21 -
Year
—
1991
Spectra
K5
Colors
yO
W
Zone 13
Deep Sky Objects
Difficult
Berkeley 10
Rating: 5 D
Position: 0339+6632
Type : Oc
Dimensions: 12.0'
Class: II 3p
Cluster population: 50
Magnitude : 12.0
Notes:
The brightest star is 14.0m.
Observations:
C8 at 104x. With averted vision, something is there, but no stars were resolved.
IC 342
Other Names: UGC 2847
Rating: 5 D
Position: 0347+6806
Type : Gal
Surface brightness: 15.0
Class: SBc
Dimensions: 18' x 17'
Magnitude : 9.1
Notes:
IC 342 was discovered in 1895 by W.F. Denning. Edwin P. Hubble suspected it to be
a member of the Local Group, but later observations showed that it is at a distance of at
least about 6, perhaps more probably 10 million light-years.
IC 342 lies at low galactic latitude, only 10.5 degrees from the Galactic Equator, or
the Milky Way's disc plane. Therefore, it is heavily obscured by interstellar matter of the
Milky Way; recent estimates give an extinction of about 2.4 magnitudes; without this
extinction, this galaxy would be among the brightest in the sky, and certainly have been
discovered much earlier.
IC 342 forms a group with some large and many dwarf galaxies, the so-called Maffei
1 group, or IC 342 group, or somtimes called IC 342/Maffei group. It is one of two
dominating members of that group, the other being elliptical galaxy Maffei 1, which is
even more obscurred and was thus only discovered in 1968.
- 22 -
Zone 13
[Source: http://www.seds.org/~spider/spider/LG/i0342.html]
Observations:
C8 at 104x. The view I saw was of a large hazy area with several stars superimposed
over it.
A 13m star lies just NW of it. A straight line of 5 or 6 very faint stars lies SW.
Model (where the Sun is a baseball):
It would have a diameter of 13 million miles.
Distance (LY): 8,000,000
Luminosity (suns): 1,150,000,000
Radial velocity (km/sec): +176
- 23 -
Zone 13
Zone 13 Mini-Catalog
Double Stars
Star
Designation
Position
Rating
Map
h1132
0315+6702
2E
2
STF 374
0324+6728
2E
2
OS 54
0332+6735
3E
2
Kuiper 13
0348+6840
3E
2
h1139
0352+7030
3E
1
h2164
0304+7039
4E
1
Bur 1231
0344+6559
4E
2
A. G. 71
0346+6606
4E
2
STF 455
0357+6931
4E
1
h1129
0305+7012
5E
1
h2168
0308+7125
5E
1
LDS 1577
0343+7324
5E
1
h1138
0345+6822
5E
1
STF 428 rej
0348+7033
5E
1
STF 419
0343+6951
3M
1
P Muller 122
0301+6548
4M
2
h1131
0307+6744
4M
2
Stein 418
0301+6524
5M
2
Milburn 392
0301+6635
5M
2
h2173
0315+7352
5M
1
Component
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
C
D
A
B
A
B
A
B
A
B
A
B
a
A
B
C
BC
A
B
A
B
A
B
A
B
A
B
- 24 -
Specifications
Mag
Sep from A
9.74
—
9.86
7.2 +
7.74
—
9.10
11.4 +
7.65
—
9.36
22.6 9.17
—
9.41
17.2 +
7.49
—
9.61
47.2 8.58
—
10.82
5.4 +
7.81
—
12.40
2.6 =
8.69
87.1 +
10.33
—
10.54
8.0 =
8.42
—
9.21
12.0 +
14.00
58.3 =
12.40
96.3
9.75
—
10.08
44.6 9.39
—
11.29
18.3 +
8.61
—
10.59
72.7 9.99
—
11.90
11.6 +
8.90
—
11.10
25.3 13.50
21.5
7.90
—
7.90
2.9 9.12
0.4 =
9.99
—
10.60
6.2 9.74
—
11.74
18.5 +
10.14
—
11.02
8.9 +
9.77
—
10.50
6.9
6.57
—
12.40
47.0
PA from A
—
25 +
—
296 +
—
0+
—
14 —
177 =
—
320 =
—
287.1 +
—
242 =
—
167 =
58.3 =
96.3
—
348 —
296 +
—
240 +
—
332 +
—
144 +
173
—
74 +
112 —
331 +
—
120 —
68 +
—
25
—
163
Zone 13
Star
Designation
Position
Rating
Map
Vilkki 11
0315+7340
5M
1
h1133
0320+6944
5M
1
h1136
0336+7012
5M
1
Stein 471
0339+6513
5M
2
STF 421
0346+7137
5M
1
Hussey 1056
0320+6714
2D
2
OS 50
0313+7134
3D
1
STF 368
0322+6830
3D
2
P Muller 391
0339+6640
3D
2
Gamma Cam
0350+7120
4D
1
OS 52
0318+6540
5D
2
Bpm 43
0320+6539
5D
2
Component
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
C
A
B
A
B
C
A
B
C
A
B
Specifications
Mag
Sep from A
11.09
—
11.60
7.0
6.60
—
12.66
30.6 =
10.82
—
12.33
11.8 10.99
—
11.10
12.6
6.97
—
10.63
12.5 +
8.00
—
8.14
1.1 +
7.64
—
8.54
1.0 +
13.20
27.2 +
9.27
—
9.36
2.0 13.33
64.9 9.46
—
10.32
2.3 +
4.63
—
13.20
56.2 +
9.07
106.0 6.41
—
6.87
0.5 +
12.70
80.5
4.84
—
12.41
120.9 -
PA from A
—
21
—
204 +
—
221 +
—
281
—
236 +
—
264 —
159 27.2 +
—
338 -?
64.9 —
224 +
—
240 106.0 —
63 -!
80.5
—
58 =
Deep Sky Objects
Object
Berkeley 10
IC 342
Position
0339+6632
0347+6806
Rating
5D
5D
Zone
Submap
2
2
Type
Oc (II 3p)
Gal (SBc)
- 25 -
Specifications
Mag
Surface Br
12.0
9.1
15.0
Population
50