Zone 142, Master Map
Normal View
+24°00'
Zone Master, Normal View, 10 deg FOV
c
+22°00'
e
Coma Berenices
d
M85
+16°00'
f
+18°00'
+20°00'
Black-eye Galaxy
M64
M100
M98
M91
Pinwheel Nebula
M99
M88
Virgo
13h 04m
12h 56m
12h 48m
12h 40m
12h 32m
12h 24m
12h 16m
12h 08m
12h 00m
Zone 142, Map 1
Normal Image
+24°00'
NGC 4022
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 4162
+23°00'
STF 1637 rej
Pourteau 3123
+22°00'
STF 1634
Kustner 103
+21°00'
Zeta Com
h2601
12h 30m
12h 25m
12h 20m
12h 15m
12h 10m
12h 05m
12h 00m
Zone 142, Map 1
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+24°00'
+25°00'
NGC 4022
NGC 4162
+23°00'
STF 1637 rej
Pourteau 3123
+22°00'
STF 1634
Kustner 103
+21°00'
Zeta Com
Hough 534
h2601
12h 00m
12h 05m
12h 10m
12h 15m
12h 20m
12h 25m
12h 30m
Zone 142, Map 2
Normal Image
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+19°00'
NGC 4336
NGC 4147
NGC 4394
NGC 4064
+18°00'
NGC 4293
M85
NGC 4382
+17°00'
11 Com
NGC 4450
NGC 4350
NGC 4340
+16°00'
NGC 4405
NGC 4152
M100
NGC 4321
NGC 4379
NGC 4237
NGC 4419
M98
NGC 4192
NGC 4262
NGC 4377
12h 30m
12h 25m
12h 20m
12h 15m
12h 10m
12h 05m
12h 00m
Zone 142, Map 2
Mirror Image
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+19°00'
NGC 4336
NGC 4064
NGC 4147
NGC 4293
+18°00'
M85NGC 4394
NGC 4382
+17°00'
11 Com
NGC 4014
+16°00'
NGC 4340
NGC 4350
NGC 4405
NGC 4152
M100
NGC 4321
NGC 4379
NGC 4237
NGC 4419
NGC 4192 M98
NGC 4262
NGC 4377
12h 00m
12h 05m
12h 10m
12h 15m
12h 20m
12h 25m
12h 30m
Zone 142, Map 3
Normal Image
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+24°00'
STF 1650
+23°00'
Engelmann 48
+22°00'
Kuiper 60
Black-eye Galaxy
M64
35 Com
13h 00m
12h 55m
STF 1663
OS 253
12h 50m
12h 45m
12h 40m
12h 35m
+21°00'
NGC 4826
STF 1652
12h 30m
Zone 142, Map 3
Mirror Image
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+24°00'
STF 1650
+23°00'
Engelmann 48
+22°00'
Kuiper 60
STF 1663
STF 1652
12h 30m
12h 35m
35 Com
OS 253
12h 40m
12h 45m
+21°00'
NGC 4826 Black-eye Galaxy
M64
12h 50m
12h 55m
13h 00m
Zone 142, Map 4
Normal Image
+19°00'
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1685
Bergh 5
Bur 112
32 Com
NGC 4498
+17°00'
+18°00'
24 Com
NGC 4515
h213
NGC 4710
STF 1686
13h 00m
12h 55m
12h 50m
12h 45m
12h 40m
12h 35m
12h 30m
+16°00'
NGC 4651
Zone 142, Map 4
Mirror Image
+19°00'
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1685
Bergh 5
NGC 4450
+17°00'
+18°00'
24 Com
32 Com
NGC 4498
NGC 4651
+16°00'
NGC 4515
h213
NGC 4710
STF 1686
12h 30m
12h 35m
12h 40m
12h 45m
12h 50m
12h 55m
13h 00m
Zone 142
1 Reference Star, 19 Double Stars,
1 Globular Cluster, 19 Galaxies
Flamsteed
NGC 4350 ............................................ 10
NGC 4379 ............................................ 11
NGC 4382 .............................................. 6
NGC 4394 .............................................. 9
NGC 4405 ............................................ 14
NGC 4419 ............................................ 11
NGC 4450 .............................................. 8
NGC 4498 ............................................ 24
NGC 4651 ............................................ 24
NGC 4710 ............................................ 23
NGC 4826 ............................................ 19
11 Com .................................................. 6
24 Com ................................................ 20
32 Com ................................................ 23
35 Com ................................................ 17
B
Bergh 5 ................................................ 22
E
Engelmann 48 ...................................... 16
H
O
h213 ..................................................... 22
h2601 ..................................................... 4
OS 253 ................................................. 16
K
P
Kuiper 60 ............................................. 17
Kustner 103............................................ 3
Pourteau 3123 ........................................ 4
N
STF 1634................................................ 2
STF 1637 rej .......................................... 3
STF 1650.............................................. 15
STF 1652.............................................. 15
STF 1663.............................................. 18
STF 1685.............................................. 21
STF 1686.............................................. 21
S
NGC 4064............................................ 12
NGC 4147............................................ 10
NGC 4152............................................ 13
NGC 4162.............................................. 5
NGC 4237............................................ 13
NGC 4293.............................................. 8
NGC 4321.............................................. 7
NGC 4336.............................................. 9
NGC 4340............................................ 12
Z
Zeta Com................................................ 2
-1-
Zone 142
Zone 142, Map 1
Double Stars
Easy
Zeta Com
2 Com; STF 1596; ADS 8406; HD 104827; SAO 82123
Position: 1204+2128
A
B
Magnitude
5.89
7.40
Separation PA
—
—
3.7 236 =
Year
—
1997
Rating: 2 E
Spectra
F0 IV
AiV
Colors
Y
B
Notes:
1820: 3.8 @ 236. Over 100 measurements. Star A is a spectroscopic binary. The
stars have common proper motion.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches; B = 7.80 inches.
Separation: AB = 2.07 miles.
Distance (LY): 359
Total luminosity (Suns): 52
STF 1634
Rating: 3 E
ADS 8520; HD 107400; SAO 82255
Position: 1221+2255
A
B
Magnitude
8.46
9.80
Separation PA
—
—
5.4 +
148 -
Notes:
1830: 5.2 @ 149. 22 measurements.
Observations:
C11 at 115x.
-2-
Year
—
1991
Spectra
G5
Colors
yW
?
Zone 142
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.9 inches.
Separation: AB = 5.64 miles.
Distance (LY): 670
Total luminosity (Suns): 18.3
Kustner 103
Rating: 4 E
SAO 82263
Position: 1222+2130
A
B
Magnitude
9.63
10.77
Separation PA
—
—
25.6 345 -
Year
—
1991
Spectra
F8
Colors
W
bW
Notes:
1892: 36.7 @ 2. 5 measurements.
Observations:
C8 at 104x. A 9m star is 12 min S.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.4 inches.
Separation: AB = 9.06 miles.
Distance (LY): 227
Total luminosity (Suns): 0.8
STF 1637 rej
Rating: 4 E
HD 107864; SAO 82284
Position: 1224+2326
A
B
Magnitude
8.93
11.16
Separation PA
—
—
120.9 +
146 +
Notes:
1904: 120.7 @ 145. 4 measurements.
Observations:
C11 at 115x.
-3-
Year
—
1991
Spectra
F8
Colors
W
?
Zone 142
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 15.8 inches.
Separation: AB = 142 miles.
Distance (LY): 750
Total luminosity (Suns): 13.7
h2601
Rating: 5 E
SAO 82179
Position: 1212+2024
A
B
Magnitude
10.17
11.51
Separation PA
—
—
26.7 67 +
Year
—
1991
Spectra
F3 V
Colors
bW
W
Notes:
1893: 26.9 @ 66. 5 measurements.
The stars share common proper motion.
Observations:
C8 at 104x. It was blasted by a 4m Y star 10 min NNE!
Pourteau 3123
Position: 1223+2323
A
B
Magnitude
10.59
11.01
Rating: 5 E
Separation PA
—
—
17.3 342 =
Year
—
1991
Spectra
Colors
W
W
Notes:
1895: 17.5 @ 342. 4 measurements.
Observations:
C8 at 104x. It looks fainter, by about a magnitude for each star. A 10m star lies 5
min E.
Distance (LY): 14
Total luminosity (Suns): 0.002
-4-
Zone 142
Deep Sky Objects
Difficult
NGC 4162
Other Names: UGC 7193; H II 353
Rating: 5 D
Position: 1212+2407
Type: Gal
Surface brightness: 13.3
Class: (R)SA)rs)bc II
Dimensions: 2' x 1'
Magnitude: 12.6
PA: 174
Observations:
C8 at 65x. Faint, with a N-S axis. An 11m star lies 2 min E and 6.8m one (SAO
82177) 49 min S.
Distance (LY): 110,000,000
Radial velocity (km/sec): +2,510
Total luminosity (Suns): 8,700,000,000
-5-
Zone 142
Zone 142, Map 2
Reference Star
11 Com (Hough 52; HD 107383; SAO 100053)
Position: 1221+1748
Mag : 4.72
Spectrum : G8 III Color : Y
Assumed distance: 361 light years
Assumed luminosity (suns): 137
Notes:
1883: 9.1 @ 44. 12 measurements.
The primary is an infra-red source.
Deep Sky Objects
Easy
NGC 4382
Other Names: UGC 7508, M85
Astronomical Leage Program: Messier Club
Rating: 2 E
Position: 1225+1811
Type: Gal
Surface brightness: 13.0
Class: SA(s)0+ pec
Dimensions: 7' x 5'
Magnitude: 9.2
Notes:
It was discovered by P. Mechain in 1781; Messier noted it too on March 18.
It is 150,000 light years in diameter and has a mass of 100 billion suns.
This galaxy produced supernova SN 1960r.
Virgo Cluster member.
Observations:
C8 at 65x. Bright and grainy, with little structure visible and a N-S axis. A 12m star
is 1 min NNE and may, in fact, lie in front of the halo. A 10m star lies 5 min NW.
Model (where the Sun is a baseball):
Its diameter would be 42.6 million miles.
-6-
Zone 142
Distance (LY): 65,000,000
Radial velocity (km/sec): +721
Luminosity (suns): 69,000,000,000
NGC 4382 (M85)
Galaxy (SA(s) 0+ pec)
Observed with C-8 on 5/3/92
Magnification: 80x
NGC 4321
Other Names: UGC 7450, M100
Astronomical Leage Program: Messier Club
Rating: 3 E
Position: 1223+1549
Type: Gal
Surface brightness: 13.0
Class: SAB(s)bc I
Dimensions: 7' x 6'
Magnitude: 9.4
PA: 30
Notes:
It was discovered by P. Mechain on March 15, 1781, the same year Messier added it
to his catalog (April 13). (The same night, Mechain also found M98 and M99!)
-7-
Zone 142
It is 130,000 light years in diameter and the largest spiral of the Coma-Virgo cluster.
Supernovae have appeared here in 1901, 1914, 1959 and 1979. The mass is about 160
billion suns.
Observations:
C8 at 65x. Large and bright, with a prominent nucleus. At higher powers, it looks
almost mottled.
Model (where the Sun is a baseball):
Its diameter would be 43 million miles.
Distance (LY): 65,000,000
Radial velocity (km/sec): +1,551
Luminosity (suns): 42,700,000,000
NGC 4293
Other Names: UGC 7405; H V 5
Astronomical League Program: Herschel 400 Club
Rating: 4 E
Position: 1221+1823
Type: Gal
Surface brightness: 13.2
Class: (R)SB(s)0/a
Dimensions: 5' x 2'
Magnitude: 11.7
PA: 72
Observations:
C8 at 65x. Bright, with an E-W axis. There was no apparent nucleus. Rich field
including three nice field stars in a row just N of the galaxy.
Distance (LY): 36,000,000
Radial velocity (km/sec): +693
Total luminosity (Suns): 2,200,000,000
Moderate
NGC 4450
Other Names: UGC 7594; H II 56
Astronomical League Program: Herschel 400 Club
Rating: 3 M
Position: 1229+1705
Type: Gal
Surface brightness: 13.0
Class: SA(s)ab I-II
Dimensions: 4' x 3'
-8-
Magnitude: 11.1
PA: 175
Zone 142
Notes:
Virgo Cluster member and Seyfert galaxy.
Observations:
C8 at 65x. This galaxy shows as a large, bright oval (N to S axis) with very bright
nucleus.
Radial velocity (km/sec): +1,995
NGC 4336
Other Names: IC3254; H II 406
Astronomical League Program: Herschel II Club
Rating: 4 M
Position: 1224+1927
Type: Gal
Surface brightness: 12.5
Class: SB0/a
Dimensions: 1.5' x 0.8'
Magnitude: 12.5
PA: 162
Observations:
C11 at 193x. Small, roundish; very gradually brightens to the middle. A 9.6m star is
5 min S.
Radial velocity (k/s): +1,031
NGC 4394
Other Names: UGC 7523; H II 55
Astronomical League Program: Herschel 400 Club
Rating: 4 M
Position: 1226+1813
Type: Gal
Surface brightness: 13.3
Class: (R)SB(r)b II
Dimensions: 3'
Notes:
Virgo Cluster member.
-9-
Magnitude: 12.0
Zone 142
Observations:
C8 at 65x. This galaxy has a starlike nucleus. There is some mottling at high powers.
A dim star lies about 5 min SW, and a very, very faint star seems to lie about 30" N of the
nucleus.
Radial velocity (km/sec): +720
NGC 4147
Other Names: Dunlop 508; H I 19
Astronomical League Program: Herschel 400 Club
Rating: 5 M
Position: 1210+1833
Type: Gc
Dimensions: 4'
Class: 6
Magnitude: 11.0
Notes:
Discovered by William Herschel on March 14, 1784.
The brightest stars are 14.5m and the horizontal branch is 16.9m.
Observations:
C8 at 65x. Unresolved, and with a starlike core. A neat little asterism of 3 stars lies a
few minutes E. A yellow star lies on the W side. Moderate field.
Model (where the Sun is a baseball):
Its diameter would be 27,000 miles.
Distance (LY): 71,000
Luminosity (suns): 16,000
NGC 4350
Other Names: UGC 7473; H II 86
Astronomical League Program: Herschel 400 Club
Rating: 5 M
Position: 1224+1642
Type: Gal
Surface brightness: 11.8
Class: SA0
Dimensions: 2' x 1'
Notes:
Virgo Cluster member.
- 10 -
Magnitude: 12.0
PA: 28
Zone 142
Observations:
C8 at 65x. A stellar nucleus and a NE-SW axis are all there is to see with an 8"
scope. A 6.5m star lies 30 min W.
Model (where the Sun is a baseball):
Its diameter would be 12 million miles.
Distance (LY): 62,000,000
Radial velocity (km/sec): +1,122
Luminosity (suns): 5,000,000,000
NGC 4379
Other Names: UGC 7502; H II 87
Astronomical League Program: Herschel II Club
Rating: 5 M
Position: 1225+1536
Type: Gal
Surface brightness: 12.3
Class: S0- pec:
Dimensions: 1.5' x 1'
Magnitude: 11.7
PA: 105
Notes:
This galaxy lies well behind the Virgo Cluster, being over 10 times farther away.
Observations:
C8 at 104x. It is a soft, round glow that is 17 min SSW of 7m SAO 100095. It has a
starlike nucleus.
C11 at 98x. Small, very bright nucleus (about 5" diameter) and very small halo.
Distance (LY): 424,000,000
Radial velocity (km/sec): +1,069
Total luminosity (Suns): 294,100,000,000
NGC 4419
Other Names: H II 113; UGC 7551; H I 113
Astronomical League Program: Herschel 400 Club
Rating: 5 M
Position: 1227+1503
Type: Gal
Surface brightness: 12.0
Class: SB(s)a
Dimensions: 2' x 0.7'
- 11 -
Magnitude: 12.2
PA: 133
Zone 142
Notes:
This is a Seyfert galaxy.
This galaxy produced supernova 1984A (type Ia).
Observations:
C8 at 65x. Faint oval with SE to NW axis; the center brightens suddenly. A star of
about 11.5m lies 3 min S.
Radial velocity (km/sec): -261
Difficult
NGC 4340
Other Names: UGC 7467; H II 85
Astronomical League Program: Herschel II Club
Rating: 4 D
Position: 1224+1643
Type: Gal
Surface brightness: 13.7
Class: SB(r)0+
Dimensions: 3.6' x 3'
Magnitude: 12.5
PA: 102
Notes:
This galaxy produced supernova 1977A.
It actually lies beyond the Virgo Cluster.
Observations:
C8 at 65x. Featureless, faint, small, round with only a slightly brighter middle. NGC
4350, an even fainter puff of light, lies ESE about 5 min.
C11 at 98x. Nice pairing with 4350. Small disc with a slightly brighter middle.
Distance (LY): 71,000,000
Radial velocity (km/sec): +950
Total luminosity (Suns): 4,000,000,000
NGC 4064
Other Names: UGC 7054
Rating: 5 D
Position: 1204+1827
Type: Gal
Surface brightness: 13.3
Class: SB(s)a: pec
Dimensions: 2.5' x 1'
- 12 -
Magnitude: 12.8
PA: 150
Zone 142
Observations:
C8 at 65x. Very faint and elongated SE-NW.
Distance (LY): 42,000,000
Radial velocity (km/sec): +967
Total luminosity (Suns): 1,100,000,000
NGC 4152
Other Names: UGC 7169; H II 83
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1211+1602
Type: Gal
Surface brightness: 13.4
Class: SAB(rs)c II
Dimensions: 1.3' x 1'
Magnitude: 12.7
PA: 175
Notes:
It lies well beyond the Virgo Cluster.
Observations:
C8 at 104x. It lies 23 min SSE of a 7m–8m pair of stars.
C11 at 98x. Small, with a very tiny halo, and fairly strong middle.
Distance (LY): 91,000,000
Radial velocity (km/sec): +2,167
Total luminosity (Suns): 5,400,000,000
NGC 4237
Other Names: UGC 7315; H II 11
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1217+1519
Type: Gal
Surface brightness: 12.5
Class: SAB(rs)bc III
Dimensions: 1.4' x 1'
Magnitude: 12.6
PA: 108
Observations:
C8 at 65x. This one is faint and round, but with a well-defined core. The glare of
SAO 100023 (6m, 12 min SE) is evil; an Aries-like asterism lies to the SE; a small
parallelogram of four stars lies 30 min N.
Distance (LY): 38,000,000
Total luminosity (Suns): 1,100,000,000
- 13 -
Zone 142
Radial velocity (km/sec): +867
NGC 4405
Other Names: IC 788; H II 88
Rating: 5 D
Position: 1226+1611
Type: Gal
Surface brightness: 12.4
Class: SA(rs)0/a:
Dimensions: 1.7' x 1.1'
Magnitude: 12.0
PA: 20
Notes:
A quasar lies 2 min SW.
Observations:
C8 at 104x. A very indistinct puff of misty light, seen with tube movement and
averted vision.
Radial velocity (km/sec): +1,747
- 14 -
Zone 142
Zone 142, Map 3
Double Stars
Easy
STF 1650
Rating: 3 E
SAO 82351
Position: 1232+2437
A
B
Magnitude
9.54
10.47
Separation PA
—
—
16.6 178 -
Year
—
1991
Spectra
F6 V
Colors
W
?
Notes:
1830: 17.17 @ 178. 8 measurements.
Observations:
C11 at 115x. It is fried by a 5.5m star 8 min SW.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.20 inches.
Separation: AB = 7.90 miles.
Distance (LY): 305
Total luminosity (Suns): 1.61
STF 1652
Rating: 4 E
ADS 8592; SAO 82367
Position: 1233+2106
A
B
Magnitude
9.45
9.78
Separation PA
—
—
6.0 =
178 -
Year
—
1991
Spectra
F8
Colors
W
W?
Notes:
1830: 6.0 @ 182. 22 measurements. The stars share common proper motion.
- 15 -
Zone 142
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.3 inches.
Separation: AB = 5.71 miles.
Distance (LY): 610
Total luminosity (Suns): 15
Engelmann 48
Rating: 4 E
HD 111066; SAO 82490
Position: 1247+2409
A
B
Magnitude
6.88
10.51
Separation PA
—
—
160.3 +
13 =
Year
—
1911
Spectra
F8 V
Colors
W
W
Notes:
1894: 156.0 @ 13. 3 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.60 inches.
Separation: AB = 35.5 miles.
Distance (LY): 142
Total luminosity (Suns): 2.90
Moderate
OS 253
Rating: 4 M
ADS 8649; HD 110721; SAO 82462
Position: 1244+2111
A
B
Magnitude
6.99
11.20
Separation PA
—
—
6.5 +
238 +
Year
—
1991
Spectra
F0
Notes:
1843: 5.8 @ 232. 18 measurements. Common proper motion.
- 16 -
Colors
W
O
Zone 142
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.75 inches.
Separation: AB = 5.57 miles.
Distance (LY): 550
Total luminosity (Suns): 20.8
Kuiper 60
Rating: 5 M
HD 109996; SAO 82420
Position: 1239+2240
A
B
Magnitude
6.39
12.50
Separation PA
—
—
33.8 +
225 +
Year
—
1989
Spectra
K1 III
Colors
Y
?
Notes:
1958: 32.8 @ 224. 2 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 2.40 inches.
Separation: AB = 19.2 miles.
Distance (LY): 364
Total luminosity (Suns): 29.1
Difficult
35 Com
STF 1687; ADS 8695; HD 112033; SAO 82550
Position: 1253+2114
A
B
C
Magnitude
5.17
7.17
9.76
Separation
—
1.1 28.8 +
PA
—
181 +!!
126 +
- 17 -
Rating: 3 D
Year
—
1998
1988
Spectra
G8 III
F6
Colors
Y
Y
B
Zone 142
Notes:
AB 1829: 1.4 @ 25. Over 100 measurements. The orbit takes 510 years (Heintz,
1973) with a semi-major axis of 1.42" and direct motion. The AB pair has mass of 2.7
and 1.4 Suns. The A star is an infra-red source.
AC 1830: 28.6 @ 125. 80 measurements. The stars share common proper motion.
Observations:
C8 at 280x.
Webb saw them as Y, B.
The galaxy M64 (NGC 4826) is 1o NE of this star.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.35 inches; B = 12.9 inches.
Separation: AB = 2,904 feet; AC = 14.6 miles.
Distance (LY): 324
Total luminosity (Suns): 89
STF 1663
Rating: 5 D
ADS 8611; HD 109782; SAO 82402
Position: 1237+2112
A
B
Magnitude
7.67
8.58
Separation PA
—
—
0.6 72 -!
Year
—
1999
Spectra
F3 V
Colors
W
W
Notes:
1830: 0.8 @ 118. Over 100 measurements.
Observations:
C11 at 634x. I got a peanut with an occassional total split on a night of moderate
seeing.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.80 inches.
Separation: AB = 3,062 feet.
Distance (LY): 620
Total luminosity (Suns): 37
- 18 -
Zone 142
Deep Sky Objects
Easy
NGC 4826
Rating: 2 E
Other Names: Black Eye Galaxy; UGC 8062, M64
Astronomical Leage Program: Messier Club, Urban Deep Sky Club
Position: 1257+2141
Type: Gal
Surface brightness: 12.4
Class: (R)SA(rs)ab
Dimensions: 8' x 4'
Magnitude: 8.6
PA: 115
Notes:
J. Bode discovered it on April 4, 1779; Messier added it to his catalog on March 1,
1780.
It is 65,000 light years in diameter, is a Seyfert galaxy, and a member of the Canes
Venatici I Cloud.
Observations:
C8 at 83x. I could not see the
"black eye", but the galaxy is large
and bright. The nucleus is very
well-defined. It has a W-E axis,
and a 10m star 5 min NE. (The
"eye" should be visible in an 8"
scope just NE of the center.) The
surface is mottled under high
power.
Model (where the Sun is a
baseball):
Its diameter would be
710,000,000.
Distance (LY): 25,000,000
Luminosity (suns): 17,800,000,000
NGC 4826 (M64)
Galaxy ((R)SA(rs)ab II-III)
Observed with C-8 on 5/3/92
Magnification: 80x
Radial velocity (km/sec): +364
- 19 -
Zone 142
Zone 142, Map 4
Double Stars
Easy
24 Com
STF 1657; ADS 8600; HD 109511; SAO 100159
Position: 1235+1822
A
B
Magnitude
5.20
6.70
Separation PA
—
—
20 =
271 -
Rating: 1 E
Year
—
1990
Spectra
K2 III
A7 V
Colors
Y!!
B!!
Notes:
Star B is a spectroscopic binary (7.3366 day period). It is also an infra-red source. Its
spectrum suggests a distance of 250 light years.
1830: 20.4 @ 272.
The stars share common proper motion.
Observations:
C8 at 65x. Webb saw them as Y, B!
Scale model (in which the Sun is the size of
a baseball):
Diameter: A = 49.5 inches; B = 6.80
inches.
Separation: AB = 19.0 miles.
Distance (LY): 610
Total luminosity (Suns): 312
24 Com (STF 1657)
Observed with C-8
Magnification: 65x
- 20 -
Zone 142
STF 1685
Sh 123; ADS 8690; HD 111845; SAO 100307
Position: 1252+1910
A
B
C
Magnitude
7.29
7.75
8.70
Separation
—
16.0 +
246.0 -
PA
—
202 +
326 -
Rating: 2 E
Year
—
1991
1918
Spectra
A8 IVp
F8 V
Colors
W
W
W
Notes:
AB 1822: 15.6 @ 198. 68 measurements. The stars share common proper motion.
AC 1723L 247.4 @ 327. 7 measurements.
Observations:
C8 at 104x. It forms a very acute triangle. From the separation and pa listing, I did
not expect it to look quite like this. Webb saw A as W or Y.
STF 1686
Rating: 2 E
ADS 8693; HD 111959; SAO 100314
Position: 1253+1501
A
B
Magnitude
7.92
8.07
Separation PA
—
—
5.7 +
187 -
Year
—
1991
Spectra
F5
Colors
W
W
Notes:
1829: 5.4 @ 188. 48 measurements. The stars share common proper motion.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.0 inches.
Separation: AB = 4.28 miles.
Distance (LY): 482
Total luminosity (Suns): 18
- 21 -
Zone 142
Bergh 5
Rating: 4 E
HD 112573; SAO 100348
Position: 1258+1842
A
B
Magnitude
8.96
9.82
Separation PA
—
—
58.0
222
Year
—
1936
Spectra
K0
Colors
Y
W
Notes:
1 measurement.
The stars share a very large common proper motion.
Observations:
C8 at 104x. An 8.5m star is 10 min S.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 25.7 inches.
Separation: AB = 12.3 miles.
Distance (LY): 136
Total luminosity (Suns): 0.8
h213
Position: 1241+1517
A
B
Magnitude
10.11
11.61
Rating: 5 E
Separation PA
—
—
22.5
222
Year
—
1907
Notes:
1 measurement.
Observations:
C8 at 104x.
Distance (LY): 136
Total luminosity (Suns): 0.13
- 22 -
Spectra
Colors
W
W
Zone 142
32 Com
SI 23; HD 111862; SAO 100309
Position: 1252+1704
A
B
C
Magnitude
6.32
6.93
8.78
Rating: 5 E
Separation
—
196.1 +
904.7 +
PA
—
51 +
262 =
Year
—
1991
1991
Spectra
M0 III
F8
Colors
Y
W
No
Notes:
AB 1836: 194.7 @ 49. 13 measurements.
AC 1910: 897.3 @ 262. 2 measurements.
The stars have different proper motions.
Observations:
C8 at 104x. C was difficult due to the glare.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 63.0 inches; B = 13.9 inches.
Separation: AB = 560 miles; AC = 2,583 miles.
Distance (LY): 1,830
Total luminosity (Suns): 1330
Deep Sky Objects
Easy
NGC 4710
Other Names: UGC 7980; H II 95
Rating: 3 E
Position: 1250+1510
Type: Gal
Surface brightness: 12.5
Class: SA(r)0+ sp
Dimensions: 3' x 0.5'
Magnitude: 12.0
PA: 27
Observations:
C8 at 65x. Bright streak (NE-SW), with a dust lane at high powers. A 12.5m star is 2
min E. A close pair of stars lies 18 min NW— (8.1m and 9.4m).
- 23 -
Zone 142
Distance (LY): 47,000,000
Radial velocity (km/sec): +1,125
Total luminosity (Suns): 2,800,000,000
Difficult
NGC 4498
Other Names: H III 69; UGC 7669
Rating: D
Position: 1232+1652
Type: Gal
Surface brightness: 13.8
Class: SAB(s)d
Dimensions: 3.5' x 1.7'
Magnitude: 12.2
PA: 133
Observations:
C8 at 104x. Located 20 min NE of a 7m star.
Radial velocity (km/sec): +1,507
NGC 4651
Other Names: UGC 7901; H II 12
Rating: 5 D
Position: 1244+1624
Type: Gal
Surface brightness: 12.9
Class: SA(rs)c II
Dimensions: 3' x 2.5'
Magnitude: 10.7
PA: 80
Notes:
It is a radio source. In 1987, SN 1987K (type II pec) was discovered in this galaxy.
Observations:
C8 at 65x. Faint, but with brighter center and E-W axis.
Model (where the Sun is a baseball):
Its diameter would be 13 million miles.
Distance (LY): 46,000,000
Radial velocity (km/sec): +805
Luminosity (suns): 8,700,000,000
- 24 -
Zone 142
Zone 142 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
24 Com
1235+1822
1E
4
Zeta Com
1204+2128
2E
1
STF 1685
1252+1910
2E
4
STF 1686
1253+1501
2E
4
STF 1634
1221+2255
3E
1
STF 1650
1232+2437
3E
3
Kustner 103
1222+2130
4E
1
STF 1637 rej
1224+2326
4E
1
STF 1652
1233+2106
4E
3
Engelmann 48
1247+2409
4E
3
Bergh 5
1258+1842
4E
4
h2601
1212+2024
5E
1
Pourteau 3123
1223+2323
5E
1
h213
1241+1517
5E
4
32 Com
1252+1704
5E
4
OS 253
1244+2111
4M
3
Kuiper 60
1239+2240
5M
3
35 Com
1253+2114
3D
3
STF 1663
1237+2112
5D
3
Component
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
C
A
B
A
B
A
B
C
A
B
- 25 -
Mag
5.20
6.70
5.89
7.40
7.29
7.75
8.70
7.92
8.07
8.46
9.80
9.54
10.47
9.63
10.77
8.93
11.16
9.45
9.78
6.88
10.51
8.96
9.82
10.17
11.51
10.59
11.01
10.11
11.61
6.32
6.93
8.78
6.99
11.20
6.39
12.50
5.17
7.17
9.76
7.67
8.58
Separation
—
20 =
—
3.7 —
16.0 +
246.0 —
5.7 +
—
5.4 +
—
16.6 —
25.6 —
120.9 +
—
6.0 =
—
160.3 +
—
58.0
—
26.7 —
17.3 —
22.5
—
196.1 +
904.7 +
—
6.5 +
—
33.8 +
—
1.1 28.8 +
—
0.6 -
PA
—
271 —
236 =
—
202 +
246.0 —
187 —
148 —
178 —
345 —
146 +
—
178 —
13 =
—
222
—
67 +
—
342 =
—
222
—
51 +
904.7 +
—
238 +
—
225 +
—
181 +!!
28.8 +
—
72 -!
Zone 142
Deep Sky Objects
Object
NGC 4382
NGC 4826
NGC 4321
NGC 4710
NGC 4293
NGC 4450
NGC 4336
NGC 4394
NGC 4147
NGC 4350
NGC 4379
NGC 4419
NGC 4498
NGC 4340
NGC 4064
NGC 4152
NGC 4162
NGC 4237
NGC 4405
NGC 4651
Position
1225+1811
1257+2141
1223+1549
1250+1510
1221+1823
1229+1705
1224+1927
1226+1813
1210+1833
1224+1642
1225+1536
1227+1503
1232+1652
1224+1643
1204+1827
1211+1602
1212+2407
1217+1519
1226+1611
1244+1624
Rating
2E
2E
3E
3E
4E
3M
4M
4M
5M
5M
5M
5M
4D
4D
5D
5D
5D
5D
5D
5D
Map
2
3
2
4
2
2
2
2
2
2
2
2
4
2
2
2
1
2
2
4
Specifications
Surface
Type
Mag
Br
Gal (SA(s)0+ pec)
9.2
13.0
Gal ((R)SA(rs)ab II-III)
8.6
12.4
Gal (SAB(s)bc I)
9.4
13.0
Gal (SA(r)0+ sp)
12.0
12.5
Gal ((R)SB(s)0/a)
11.7
13.2
Gal (SA(s)ab I-II)
11.1
13.0
Gal (SB0/a)
12.5
12.5
Gal ((R)SB(r)b II)
12.0
13.3
Gc (6)
11.0
Gal (SA0)
12.0
11.8
Gal (S0- pec:)
11.7
12.3
Gal (SB(s)a)
12.2
12.0
Gal (SAB(s)d)
12.2
13.8
Gal (SB(r)0+)
12.5
13.7
Gal (SB(s)a: pec)
12.8
13.3
Gal (SAB(rs)c II)
12.7
13.4
Gal ((R)SA)rs)bc II)
12.6
13.3
Gal (SAB(rs)bc III)
12.6
12.5
Gal (SA(rs)0/a:)
12.0
12.4
Gal (SA(rs)c II)
10.7
12.9
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Pop.