Zone 70, Master Map
Normal View
Stein 2285
STF 1695
OS 249
Espin 726
Espin 733
Gamma UMa
γ Phecda
STF 1572
M109
NGC 3992
c
OS 243
STF 1608
OS 244
NGC 4102
LDS 3043
e
Canes VenaticiSTF 1600
Espin 730
h2610
NGC 4026 Espin 723
MCG +09-20-052
STF 1609
NGC 4088
NGC 3922
NGC 4157
Couteau 2102
STF 1679
NGC 4100
h2642
d
h2634
h2627
NGC 3893
Miniature Spiral
NGC 3896
NGC 3985
χ
NGC 3949
Kazeza 23
Kazeza 24
NGC 3928
NGC 4047
NGC 4220
NGC 4096
NGC 4248 M106
NGC 4217
NGC 4258
Espin 2639
NGC 4346
Espin 725
h2602
NGC 4144
Espin 2642
f
NGC 4800
Espin 731
OS 257
NGC 4242
Y CVn
NGC 4460
STF 1645
12h 48m
+50°00'
STF 1718
13h 00m
STF 1587 rej
7 CVn
Bemporad 4
13h 12m
NGC 3953
12h 36m
65 UMa
h1198
STF 1581
h842
STF 1642
NGC 4449
12h 24m
A 1781
Ursa MajorNGC 4051
12h 12m
STF 1574
NGC 3938
Espin 2641 NGC 4013
12h 00m
11h 48m
+48°00'
OS 263
NGC 3737
+54°00'
h2649
MCG +09-20-046 NGC 3990
STF 1603 NGC 3998
NGC 3982
h2605 Espin 73
+46°00'
ζ
Zeta UMa
Mizar
+52°00'
Zone Master, Normal View, 10 deg FOV
Zone 70, Map 1
Normal Image
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 3982
h2605
Espin 73
+54°00'
Stein 2285
OS 249
Gamma UMaγ
STF 1608
OS 243
Phecda
M109
NGC 3992
+53°00'
Espin 726
LDS 3043
NGC 3953
Canes Venatici
STF 1600
NGC 4026
MCG +09-20-052
h2610
STF 1609
NGC 4088
+50°00'
NGC 4157
Couteau 2102
12h 30m
12h 24m
12h 18m
12h 12m
+51°00'
STF 1587 rej
7 CVn
12h 36m
+52°00'
OS 244
NGC 4102
NGC 4100
12h 06m
12h 00m
11h 54m
Zone 70, Map 1
Mirror Image
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 3982
h2605
Stein 2285
+54°00'
Espin 73
OS 249
Espin 726
Gamma UMa
Phecda
M109 OS 243
NGC 3992
+53°00'
γ
STF 1608
OS 244
NGC 4102
+52°00'
LDS 3043
NGC 3953
Canes Venatici
STF 1600
STF 1587 rej
+51°00'
NGC 4026
MCG +09-20-052
h2610
STF 1609
NGC 4088
NGC 4157
+50°00'
Espin 723
7 CVn
NGC 3922
Couteau 2102
11h 54m
12h 00m
NGC 4100
12h 12m
12h 06m
12h 18m
12h 24m
12h 30m
12h 36m
Zone 70, Map 2
Normal Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Couteau 2102
+49°00'
NGC 4100
NGC 3985
Espin 2642
NGC 4220
NGC 4217
Espin 2639
STF 1581
12h 30m
+45°00'
NGC 4242
12h 36m
65 UMa
+46°00'
Espin 725
NGC 4144
h2602
NGC 4460
STF 1645
+47°00'
Kazeza 23
NGC 4096 Kazeza 24
NGC 4258
NGC 4248
M106
NGC 4346
+48°00'
NGC 4047
STF 1642
12h 24m
A 1781
12h 18m
12h 12m
12h 06m
NGC 4051
12h 00m
11h 54m
Zone 70, Map 2
Mirror Image
NGC 3922
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Couteau 2102
+49°00'
NGC 4100
Miniature Spiral
NGC 3928
NGC 4047
+48°00'
NGC 3985
Kazeza 23
Kazeza 24 NGC 4096
NGC 4248
NGC 4258
M106
NGC 4217
NGC 4346
Espin 2639
STF 1581
+46°00'
Espin 725
NGC 4144
h2602
NGC 4242
NGC 4460
STF 1645
STF 1642
h842
A 1781
11h 54m
12h 00m
NGC 4051
12h 06m
12h 12m
12h 18m
+45°00'
65 UMa
Espin 2642
NGC 4220
+47°00'
NGC 3949
12h 24m
12h 30m
12h 36m
Zone 70, Map 2a Detail
Normal Image
+48°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque, Inc.
+47°30'
NGC 4220
NGC 4248
M106
NGC 4258
+47°00'
NGC 4346
NGC 4217
12h 24m
12h 21m
12h 18m
12h 15m
12h 12m
Zone 70, Map 2a Detail
Mirror Image
+48°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque, Inc.
+47°30'
NGC 4220
NGC 4248
M106
NGC 4258
NGC 4346
12h 12m
12h 15m
+47°00'
NGC 4217
12h 18m
12h 21m
12h 24m
Zone 70, Map 3
Normal Image
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
OS 249
STF 1695
+54°00'
Stein 2285
+52°00'
+53°00'
Espin 726
+51°00'
7 CVn
STF 1718
+50°00'
Espin 730
Bemporad 4
STF 1679
13h 06m
13h 00m
12h 54m
12h 48m
12h 42m
12h 36m
12h 30m
12h 24m
Zone 70, Map 3
Mirror Image
+55°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+54°00'
Stein 2285
OS 249
STF 1695
+53°00'
Espin 726
+52°00'
LDS 3043
STF 1718
h2610
+51°00'
7 CVn
+50°00'
Espin 730
STF 1679
12h 24m
12h 30m
12h 36m
12h 42m
12h 48m
12h 54m
13h 00m
13h 06m
Zone 70, Map 4
Normal Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Bemporad 4
h2642
Espin 2642
+48°00'
+49°00'
STF 1679
h2634
+47°00'
h2627
+46°00'
NGC 4800
Espin 731
OS 257
13h 06m
13h 00m
12h 54m
12h 48m
12h 42m
12h 36m
+45°00'
Y CVn
NGC 4460
STF 1645
STF 1642
12h 30m
12h 24m
Zone 70, Map 4
Mirror Image
+50°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+48°00'
+49°00'
STF 1679
Espin 2642
h2634
+47°00'
h2627
NGC 4346
+46°00'
NGC 4800
Espin 731
OS 257
+45°00'
Y CVn
NGC 4460
STF 1645
STF 1642
12h 24m
12h 30m
12h 36m
12h 42m
12h 48m
12h 54m
13h 00m
13h 06m
Zone 70
Index
1 Variable Star; 22 Double Stars; 15 Galaxies
Flamsteed
NGC 4144 ..........................................................16
NGC 4157 ............................................................9
NGC 4217 ..........................................................17
NGC 4220 ..........................................................14
NGC 4242 ..........................................................17
NGC 4248 ..........................................................15
NGC 4258 ..........................................................12
NGC 4346 ..........................................................13
NGC 4800 ..........................................................23
7 CVn .....................................................................4
E
Espin 2639..........................................................10
Espin 2642..........................................................10
Espin 725 ............................................................11
Espin 726 ............................................................19
Espin 73 .................................................................5
Espin 730 ............................................................18
Espin 731 ............................................................22
O
h2602 ....................................................................11
h2610 ......................................................................6
h2627 ....................................................................21
OS 243 ...................................................................6
OS 244 ...................................................................7
OS 249 ...................................................................7
OS 257 .................................................................21
L
S
LDS 3043..............................................................5
STF 1587 rej ........................................................4
STF 1600 ..............................................................2
STF 1608 ..............................................................2
STF 1609 ..............................................................3
STF 1679 ............................................................20
STF 1695 ............................................................18
H
N
NGC 4047 ..........................................................14
NGC 4085 ............................................................8
NGC 4088 ............................................................8
NGC 4096 ..........................................................15
NGC 4100 ..........................................................16
NGC 4102 ............................................................9
Y
Y CVn ..................................................................20
-1-
Zone 70
Zone 70, Map 1
Double Stars
Easy
STF 1608
ADS 8450; HD 105963; SAO 28287
Rating: 2 E
Position: 1212+5325
A
B
Magnitude
7.96
8.14
Separation PA
—
—
13.5 +
220 -
Year
—
1994
Spectra
K0
K0
Colors
W
W
Notes:
1831: 11.0 @ 225. 73measurements.
Hipparcos/Tycho data show different distances for these stars; they may be optical.
However, the stars exhibit common proper motion.
Observations:
C8 at 104x. It lies between two bright stars lined up E and W— 6.2m and 7.5m.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 24.2 inches; B = 24.5 inches.
Separation: AB = 1.81 miles.
Distance (LY): 86
Total luminosity (Suns): 0.69
STF 1600
ADS 8414; HD 105031; SAO 28241
Rating: 3 E
Position: 1206+5156
A
B
Magnitude
7.09
7.69
Separation PA
—
—
7.8 +
93 =
-2-
Year
—
1997
Spectra
G8 III
Colors
W
B
Zone 70
Notes:
1832: 7.6 @ 93. 41 measurements.
Star A is a spectroscopic binary.
The stars have different proper motions.
Observations:
C8 at 65x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 43.5 inches.
Separation: AB = 9.12 miles.
Distance (LY): 750
Total luminosity (Suns): 80
STF 1609
ADS 8454; HD 105980; SAO 28290
Rating: 3 E
Position: 1212+5050
A
B
C
Magnitude
7.95
10.04
13.37
Separation
—
11.3 +
69
PA
—
205 146
Year
—
1991
1911
Notes:
AB 1831: 10.8 @ 206. 15 measurements.
AC 1 measurement.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.6 inches.
Separation: AB = 7.82 miles; AC = 47.8 miles.
Distance (LY): 444
Total luminosity (Suns): 11.9
-3-
Spectra
F2
Colors
W
B
?
Zone 70
7 CVn
Bpm 143; HD 108845; SAO 28407
Rating: 3 E
Position: 1230+5131
A
B
C
Magnitude
6.21
11.72
8.43
Separation
—
109.2
215.2 -!
PA
—
172
232 +
Year
—
1908
1991
Spectra
F8 V
Colors
W
dB
pB
Notes:
AB 1 measurement. The stars have different proper motions.
AC 1908: 231.8 @ 326. 3 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.60 inches.
Separation: AB = 25.1 miles; AC = 49.3 miles.
Distance (LY): 147
Total luminosity (Suns): 6.1
STF 1587 rej
HD 233888; SAO 28213
Rating: 4 E
Position: 1200+5137
A
B
Magnitude
9.22
11.20
Separation PA
—
—
16.8 +
289 =
Year
—
1991
Notes:
AB 1901: 16.6 @ 289. 7 measurements.
Observations:
C8 at 104x. It is the S-most star of a chain of 9m stars.
-4-
Spectra
G0
Colors
W
O
Zone 70
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.1 inches.
Separation: AB = 16.3 miles.
Distance (LY): 620
Total luminosity (Suns): 11
Espin 73
ADS 8445; HD 238079; SAO 28274
Rating: 5 E
Position: 1210+5454
A
B
Magnitude
9.11
10.75
Separation PA
—
—
36.3 +
25 +
Year
—
1983
Spectra
K0
Colors
Y
W
Notes:
AB 1901: 30.6 @ 21. 7 measurements.
Observations:
C8 at 104x.
LDS 3043
HD 107167; SAO 28337
Rating: 5 E
Position: 1219+5233
A
B
Magnitude
8.69
11.65
Separation PA
—
—
107.4 +
285 =
Year
—
1991
Notes:
1899: 106.9 @ 285. 4 measurements.
Observations:
C11 at 115x.
Distance (LY): 330
Total luminosity (Suns): 3
-5-
Spectra
Colors
W
W
Zone 70
h2610
Rating: 5 E
Position: 1221+5058
A
B
Magnitude
10.46
10.80
Separation PA
—
—
25.2 141 =
Year
—
1991
Spectra
F
Colors
W
W
Notes:
1900: 25.3 @ 141. 8 measurements.
Observations:
C8 at 104x.
Moderate
OS 243
ADS 8378; HD 104148; SAO 28210
Rating: 3 M
Position: 1200+5324
A
B
Magnitude
8.58
9.35
Separation PA
—
—
1.1 +
9+
Year
—
1991
Notes:
1843: 0.9 @ 6. 34 measurements.
Observations:
C11 at 339x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 15.5 inches.
Separation: AB = 1.57 miles.
Distance (LY): 920
Total luminosity (Suns): 36.5
-6-
Spectra
F8
Colors
W
W
Zone 70
OS 244
ADS 8416; HD 105030; SAO 28242
Rating: 4 M
Position: 1206+5253
A
B
Magnitude
7.94
10.66
Separation PA
—
—
3.2 =
324 +
Year
—
1991
Spectra
F5
Colors
W
Y
Notes:
1820: 3.2 @ 322. 17 measurements.
Observations:
C11 at 339x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.0 inches.
Separation: AB = 1.86 miles.
Distance (LY): 373
Total luminosity (Suns): 7.9
OS 249
ADS 8535; HD 107922; SAO 28364
Rating: 5 M
Position: 1224+5409
A
B
Magnitude
7.73
11.20
Separation PA
—
—
13.2 =
149 =
Year
—
1991
Notes:
1855: 13.2 @ 149. 14 measurements.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.1 inches.
Separation: AB = 105 miles.
Distance (LY): 5,100
Total luminosity (Suns): 1,770
-7-
Spectra
G5
Colors
Y
W
Zone 70
Deep Sky Objects
Moderate
NGC 4085
Other Names: UGC 7075, H I 224
Astronomical League Program: Herschel 400 Club
Rating: 4 M
Position: 1205+5021
Type : Gal
Surface brightness: 13.0
Class: SAB(s)c:? III-IV
Dimensions: 2.5' x 0.8'
Magnitude : 12.4
PA: 78
Observations:
30-inch + 40mm (94x) It shows up as a faint streak in a very rich field. The much
larger and brighter NGC 4080 is just 20 min N. The galaxy seems to sit in a shallow
"bowl" of stars.
Distance: 35,000,000 light years
Luminosity: 1,100,000,000 Suns
NGC 4088
Other Names: UGC 7081, H I 206
Astronomical League Program: Herschel 400 Club
Rating: 5 M
Position: 1206+5033
Type : Gal
Surface brightness: 13.0
Class: Sc
Dimensions: 5' x 2'
Magnitude : 11.1
PA: 43
Notes:
Member of the Canes Venatici II Cloud.
Observations:
C8 at 65x. It is a uniform haze with a NE-SW axis. The center is noticeably brighter.
Two bright stars lie to the S.
Model (where the Sun is a baseball):
Its diameter would be 17 million miles.
-8-
Zone 70
Distance (LY): 36,000,000
Radial velocity (km/sec): +820
Luminosity (suns): 3,700,000,000
NGC 4102
Other Names: UGC 7096, H I 225
Astronomical League Program: Herschel 400 Club
Rating: 5 M
Position: 1206+5243
Type : Gal
Surface brightness: 12.8
Class: SAB(s)b?
Dimensions: 2' x 1'
Magnitude : 12.2
PA: 38
Observations:
C8 at 65x. It lies 10 min S of OS 244 (an unresolved pair), which makes it difficult to
see the galaxy. It has a NE-SW axis. The nucleus is obvious. A faint star lies 1 minW.
Distance: 43,000,000 light years
Radial velocity (km/sec): +996
Luminosity: 2,000,000,000 Suns
NGC 4157
Other Names: UGC 7183, H I 208
Astronomical League Program: Herschel II Club
Rating: 5 M
Position: 1211+5029
Type : Gal
Surface brightness: 13.5
Class: Sb
Dimensions: 6' x 1'
Magnitude : 12.0
PA: 66
Notes:
This galaxy produced supernova 1937A (type II), 1955A, and 2003J (type II).
Observations:
C8 at 65x. Large but dim, it runs NE-SW. It looks mottled at high power.
C11 at 98x. Nice long streak; slightly brighter core, no sign of any dust lane.
Model (where the Sun is a baseball):
Its diameter would be 22 million miles.
-9-
Zone 70
Distance (LY): 39,000,000
Radial velocity (km/sec): +774
Luminosity (suns): 1,900,000,000
Zone 70, Map 2
Double Stars
Easy
Espin 2642
Rating: 3 E
Position: 1228+4753
A
B
Magnitude
10.15
10.41
Separation PA
—
—
28.3 257 -
Year
—
1991
Spectra
Colors
W
W
Notes:
1902: 29.5 @ 259. 7 measurements.
Observations:
C11 at 115x.
Espin 2639
ADS 8377; SAO 43985
Rating: 4 E
Position: 1200+4636
A
B
Magnitude
9.31
12.30
Separation PA
—
—
9.7 +
53 +
Notes:
1911: 9.5 @ 52. 2 measurements.
- 10 -
Year
—
1986
Spectra
F8
Colors
W
pV?
Zone 70
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.1 inches.
Separation: AB = 2.08 miles.
Distance (LY): 138
Total luminosity (Suns): 0.299
Espin 725
ADS 8441
Rating: 4 E
Position: 1210+4636
A
B
Magnitude
10.36
10.86
Separation PA
—
—
6.4 60 +
Year
—
1991
Spectra
Colors
W
bW
Notes:
1909: 6.6 @ 59. 6 measurements.
Observations:
C11 at 115x.
Distance (LY): 230
Total luminosity (Suns): 0.482
h2602
Rating: 5 E
Position: 1212+4618
A
B
Magnitude
11.13
11.74
Separation PA
—
—
21.1 227 +
Notes:
1880: 23.8 @ 224. 6 measurements.
Observations:
C8 at 104x.
- 11 -
Year
—
1991
Spectra
Colors
W
bW
Zone 70
Distance (LY): 75
Total luminosity (Suns): 0.03
Deep Sky Objects
Easy
NGC 4258
Other Names: UGC 7353, M106, H V 43
Astronomical Leage Program: Messier Club, Herschel 400 Club
Rating: 2 E
Position: 1219+4718
Type : Gal
Surface brightness: 13.8
Class: SAB(s)bc II-III
Dimensions: 20' x 6'
Magnitude : 9.0
PA: 150
Notes:
It is a radio source and Seyfert galaxy and is a member of the Canes Ventatici I
Cloud.
The VLBA has detected a warped disk of matter within 1 light-year of its center.
Doppler shifts suggest a black hole with a mass of 39 million suns.
Observations:
C8 at 65x. A NW-SE oval with a starlike nucleus and mottled halo at high power.
The N end is brighter. The sudden edge on the W side suggests a dust lane. (Try it at
high powers.)
Model (where the Sun is a baseball):
Its diameter would be 66 million miles.
Distance (LY): 35,500,000
Radial velocity (km/sec): +494
Luminosity (suns): 25,000,000,000
See sketch, next page.
- 12 -
Zone 70
NGC 4258
Galaxy (SAB(s)bc II-III)
Observed with C-8 on 3/26/92; s8, t8
Magnification: 80x
NGC 4346
Other Names: UGC 7463, H I 210
Astronomical League Program: Herschel 400 Club
Rating: 4 E
Position: 1222+4708
Type : Gal
Surface brightness: 12.6
Class: SB0
Dimensions: 1.6' x 0.8'
Magnitude : 12.4
PA: 99
Observations:
C8 at 65x. Small and easy, but featureless. It runs almost E-W.
Distance: 40,000,000 light years
Radial velocity (km/sec): +770
Luminosity: 1,700,000,000 Suns
- 13 -
Zone 70
Moderate
NGC 4220
Other Names: UGC 7290, H I 209
Astronomical League Program: Herschel II Club
Rating: 3 M
Position: 1216+4753
Type : Gal
Surface brightness: 12.9
Class: SA(r) 0+
Dimensions: 2.5' x 0.6'
Magnitude : 12.3
PA: 141
Observations:
C8 at 83x. This galaxy shows a bright oval in a bleak field (with NW-SE axis).
Distance: 46,000,000 light years
Radial velocity (km/sec): +1,051
Luminosity: 2,000,000,000 Suns
NGC 4047
Other Names: H II 741
Astronomical League Program: Herschel II Club
Rating: 5 M
Position: 1204+4839
Type : Gal
Surface brightness: 12.0
Class: (R)SA(rs)b:
Dimensions: 1.2' x 1'
Magnitude : 12.2
PA: 105
Observations:
C8 at 83x. Small bright nucleus without a halo.
Distance: 64,000,000 light years
Radial velocity (km/sec): +3,410
Luminosity: 10,700,000,000 Suns
- 14 -
Zone 70
NGC 4248
Other Names: H II 742
Astronomical League Program: Herschel II Club
Rating: 5 M
Position: 1218+4725
Type : Gal
Surface brightness: 13.7
Class: Irr?
Dimensions: 3.2' x 1.3'
Magnitude : 12.5
PA: 108
Observations:
C8 at 83x. It is vastly overwhelmed by the majestic M106 (NGC 4258) just 5 min E.
It has a stellar nucleus and no noticeable halo.
Distance: 24,000,000 light years
Radial velocity (km/sec): +484
Luminosity: 500,000,000 Suns
Difficult
NGC 4096
Other Names: UGC 7090, H I 207
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1206+4729
Type : Gal
Surface brightness: 13.3
Class: Sc
Dimensions: 6' x 1'
Magnitude : 11.5
PA: 20
Notes:
This is a Seyfert galaxy.
Observations:
C8 at 65x. It is a faint N-S streak. It lies 5 min N of an 8m right triangle.
Model (where the Sun is a baseball):
Its diameter would be 13 million miles.
Distance (LY): 24,000,000
Radial velocity: +566 k/s
Luminosity (suns): 1,100,000,000
- 15 -
Zone 70
NGC 4100
Other Names: UGC 7095, H III 717
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1206+4935
Type : Gal
Surface brightness: 13.4
Class: (R')SA(rs)bc
Dimensions: 4' x 1'
Magnitude : 11.9
PA: 167
Observations:
C8 at 65x. Very faint, with a NW-SE streak. The nucleus is slightly brighter.
Distance: 50,000,000 light years
Radial velocity (km/sec): +1,074
Luminosity: 3,500,000,000 Suns
NGC 4144
Other Names: UGC 7151, H II 747
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1210+4627
Type : Gal
Surface brightness: 14.0
Class: SAB(s)cd?
Dimensions: 5' x 1'
Magnitude : 12.4
PA: 104
Observations:
C8 at 104x. It has an E-W axis. It lies between two 9m stars.
C11 at 193x. Very faint and small, with a star-like nucleus (or a foreground star); the
halo runs N-S.
Distance: 45,000,000 light years
Radial velocity (km/sec): +265
Luminosity: 1,800,000,000 Suns
- 16 -
Zone 70
NGC 4217
Other Names: UGC 7282, H II 748
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1216+4706
Type : Gal
Surface brightness: 13.2
Class: Sab
Dimensions: 4' x 1'
Magnitude : 11.9
PA: 50
Observations:
C8 at 65x. A faint streak just S of NGC 4220, and in a bleak field. It has a NE-SW
axis and a somewhat brighter center. A 9m star lies 3 min NE, and 11m star a little closer
(and seems to overlap the halo), and another one 8 min W. A nice field lies to the WSW.
Distance: 46,000,000 light years
Radial velocity (km/sec): +1,027
Luminosity: 2,900,000,000 Suns
NGC 4242
Other Names: UGC 7323, H III 725
Rating: 5 D
Position: 1218+4537
Type : Gal
Surface brightness: 13.8
Class: SAB(s)dm III-IV
Dimensions: 4' x 3'
Magnitude : 11.5
PA: 25
Notes:
This galaxy produced supernova 2002bu.
The galaxy is a member of the CVn II Cloud.
Observations:
C8 at 65x. Faint, with no distinct nucleus. A 10m star lies 10 min NW, and a 13m
star lies on the SW edge.
Distance: 33,000,000 light years
Radial velocity (km/sec): +517
Luminosity: 2,200,000,000 Suns
- 17 -
Zone 70
Zone 70, Map 3
Double Stars
Easy
Espin 730
ADS 8672
Rating: 4 E
Position: 1249+5056
A
B
Magnitude
10.26
11.50
Separation PA
—
—
3.3 =
66 +
Year
—
1974
Spectra
Colors
W
W
Notes:
1909: 3.3 @ 65. 3 measurements.
Observations:
C11 at 115x.
Distance (LY): 79
Total luminosity (Suns): 0.050
Moderate
STF 1695
ADS 8710; HD 112486; SAO 28572
Rating: 4 M
Position: 1256+5406
A
B
C
Magnitude
5.84
7.75
10.40
Separation
—
3.7 +
124.6 +
PA
—
281 142 =
Year
—
1998
1909
Spectra
A5m
Colors
Y
O
?
Notes:
AB 1832: 3.3 @ 289. 69 measurements. Star A is a spectroscopic binary with a
5.1274 day period. The stars show similar proper motions.
- 18 -
Zone 70
AC 1880: 124.1 @ 142. 2 measurements.
Observations:
C8 at 104x. Webb saw them as W and W.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.95 inches.
Separation: AB = 1.47 miles; AC = 49.7 miles.
Distance (LY): 256
Total luminosity (Suns): 28.8
Espin 726
ADS 8579
Rating: 5 M
Position: 1231+5352
A
B
C
Magnitude
10.28
12.10
13.20
Separation
—
9.2 20.8 -
PA
—
163 177 +
Year
—
1988
1988
Notes:
AB 1909: 9.6 @ 173. 2 measurements.
AC 1909: 21.7 @ 171. 2 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 2.85 inches.
Separation: AB = 9.76 miles; AC = 22.0 miles.
Distance (LY): 680
Total luminosity (Suns): 3.51
- 19 -
Spectra
G9 V
Colors
W
?
?
Zone 70
Zone 70, Map 4
Reference Star
Y CVn (La Superba; HD 110914; SAO 44317)
Position: 1245+4527
Mag : 5.4
Spectrum : C7 Ia
Color : rO!!
Assumed distance: 710 light years
Assumed luminosity (suns): 280
Notes:
The name La Superba! was assigned to this star by Father Secchi due to its spectrum.
It is similar to the red giant R Leporus (Hind's Crimson Star), both being fine examples of
"carbon stars".
Y CVn is probably as large as Mira, and is one of the coolest stars known (only
2,600o K at the surface). It is also an infra-red source.
Observations:
C8 at 104x.
Double Stars
Easy
STF 1679
ADS 8661; HD 111041; SAO 28509
Rating: 4 E
Position: 1246+4950
A
B
Magnitude
9.01
9.44
Separation PA
—
—
5.8 +
207 -
Year
—
1991
Spectra
F8 IV
Colors
W
pB
Notes:
AB 1832: 5.5 @ 208. 21 measurements. The stars show a similar, but small, proper
motion.
Observations:
C8 at 83x.
- 20 -
Zone 70
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 3.40 miles.
Distance (LY): 376
Total luminosity (Suns): 8
OS 257
ADS 8714; HD 112515
Rating: 4 E
Position: 1257+4537
A
B
Magnitude
8.51
9.50
Separation PA
—
—
13.0 +
353 =
Year
—
1991
Spectra
F2 Vp
F2
Colors
W
G?
Notes:
1843: 12.7 @ 353. 24 measurements.
Hipparcos/Tycho data show different distances for these stars (1,910 and 1,380 light
years); they may be optical. However, the stars exhibit common proper motion.
Observations:
C8 at 65x.
h2627
ADS B6327; SAO 44402
Rating: 5 E
Position: 1258+4728
A
B
Magnitude
9.72
12.37
Separation PA
—
—
17.8
132
Notes:
1 measurement.
Observations:
C8 at 104x.
- 21 -
Year
—
1901
Spectra
G0
Colors
W
O?
Zone 70
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.6 inches.
Separation: AB = 2.86 miles.
Distance (LY): 103
Total luminosity (Suns): 0.109
Moderate
Espin 731
ADS 8681; HD 111689; SAO 44349
Rating: 4 M
Position: 1251+4604
A
B
Magnitude
8.17
12.70
Separation PA
—
—
12.0 348 -
Year
—
1989
Notes:
1909: 12.1 @ 349. 2 measurements.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 43.5 inches.
Separation: AB = 22.7 miles.
Distance (LY): 1,210
Total luminosity (Suns): 101
- 22 -
Spectra
G8 III
Colors
Y
?
Zone 70
Deep Sky Objects
Difficult
NGC 4800
Other Names: UGC 8035, H I 211
Astronomical League Program: Herschel 400 Club
Rating: 4 D
Position: 1255+4632
Type : Gal
Surface brightness: 12.0
Class: SA(rs)b III
Dimensions: 1.2' x 0.9'
Magnitude : 12.2
PA: 25
Observations:
C8 at 104x. Very faint, round splotch. Is the SE apex of a triangle with two 8m stars.
A 13m star lies 15" W of the nucleus.
Distance: 36,000,000 light years
Radial velocity (km/sec): +830
Luminosity: 1,400,000,000 Suns
- 23 -
Zone 70
Zone 70 Mini-Catalog
Double Stars
Double
Position
Rating
Map
STF 1608
1212+5325
2E
1
STF 1600
1206+5156
3E
1
STF 1609
1212+5050
3E
1
Espin 2642
1228+4753
3E
2
7 CVn
1230+5131
3E
1
Espin 2639
1200+4636
4E
2
STF 1587 rej
1200+5137
4E
1
Espin 725
1210+4636
4E
2
STF 1679
1246+4950
4E
4
Espin 730
1249+5056
4E
3
OS 257
1257+4537
4E
4
Espin 73
1210+5454
5E
1
h2602
1212+4618
5E
2
LDS 3043
1219+5233
5E
1
h2610
1221+5058
5E
1
h2627
1258+4728
5E
4
OS 243
1200+5324
3M
1
OS 244
1206+5253
4M
1
Espin 731
1251+4604
4M
4
STF 1695
1256+5406
4M
3
OS 249
1224+5409
5M
1
Espin 726
1231+5352
5M
3
Comp
A
B
A
B
A
B
C
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
A
B
C
A
B
A
B
C
- 24 -
Mag
7.96
8.14
7.09
7.69
7.95
10.04
13.37
10.15
10.41
6.21
11.72
8.43
9.31
12.30
9.22
11.20
10.36
10.86
9.01
9.44
10.26
11.50
8.51
9.50
9.11
10.75
11.13
11.74
8.69
11.65
10.46
10.80
9.72
12.37
8.58
9.35
7.94
10.66
8.17
12.70
5.84
7.75
10.40
7.73
11.20
10.28
12.10
13.20
Sep
—
13.5 +
—
7.8 +
—
11.3 +
69
—
28.3 —
109.2
215.2 -!
—
9.7 +
—
16.8 +
—
6.4 —
5.8 +
—
3.3 =
—
13.0 +
—
36.3 +
—
21.1 —
107.4 +
—
25.2 —
17.8
—
1.1 +
—
3.2 =
—
12.0 —
3.7 +
124.6 +
—
13.2 =
—
9.2 20.8 -
PA
—
220 —
93 =
—
205 69
—
257 —
172
215.2 -!
—
53 +
—
289 =
—
60 +
—
207 —
66 +
—
353 =
—
25 +
—
227 +
—
285 =
—
141 =
—
132
—
9+
—
324 +
—
348 —
281 124.6 +
—
149 =
—
163 20.8 -
Zone 70
Deep Sky Objects
Object
NGC 4258
NGC 4346
NGC 4220
NGC 4085
NGC 4047
NGC 4088
NGC 4102
NGC 4157
NGC 4248
NGC 4800
NGC 4100
NGC 4096
NGC 4144
NGC 4217
NGC 4242
Position
1219+4718
1222+4708
1216+4753
1205+5021
1204+4839
1206+5033
1206+5243
1211+5029
1218+4725
1255+4632
1206+4935
1206+4729
1210+4627
1216+4706
1218+4537
Rating
2E
4E
3M
4M
5M
5M
5M
5M
5M
4D
5D
5D
5D
5D
5D
Map
2
2
2
1
2
1
1
1
2
4
2
2
2
2
2
Type and Class
Gal (SAB(s)bc II-III)
Gal (SB0)
Gal (SA(r) 0+)
Gal (SAB(s)c:? III-IV)
Gal ((R)SA(rs)b:)
Gal (Sc)
Gal (SAB(s)b?)
Gal (Sb)
Gal (Irr?)
Gal (SA(rs)b III)
Gal ((R')SA(rs)bc)
Gal (Sc)
Gal (SAB(s)cd?)
Gal (Sab)
Gal (SAB(s)dm III-IV)
- 25 -
Mag
9.0
12.4
12.3
12.4
12.2
11.1
12.2
12.0
12.5
12.2
11.9
11.5
12.4
11.9
11.5
Surf Br
13.8
12.6
12.9
13.0
12.0
13.0
12.8
13.5
13.7
12.0
13.4
13.3
14.0
13.2
13.8
Population