Zone 194, Master Map
+06°00'
Normal View
Zone Master, Normal View, 10 deg FOV
Octans
λ
c
+02°00'
e
+04°00'
Hercules
Marfik
M12
f
-02°00'
+00°00'
σ
d
δ
Yed Prior
Libra
M10
ε
16h 56m
16h 48m
16h 40m
16h 32m
16h 24m
Yed Posterior
16h 16m
16h 08m
16h 00m
-04°00'
Serpens Cauda
Zone 194, Map 1
Normal Image
+05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+04°00'
STF 2027
Hercules
Kustner 110
Octans
+03°00'
Serpens Cauda
+02°00'
STF 2038 rej
A 2233
A 2180
σ
NGC 6100
16h 30m
16h 25m
+01°00'
STF 2041
16h 20m
16h 15m
NGC 6070
16h 10m
16h 05m
16h 00m
Zone 194, Map 1
Mirror Image
+05°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 2027
+04°00'
Hercules
Kustner 110
+03°00'
Octans
Serpens Cauda
STF 2041
σ
NGC 6100
NGC 6070
16h 00m
16h 05m
16h 10m
A 2233
16h 15m
16h 20m
16h 25m
+01°00'
A 2180
+02°00'
STF 2038 rej
16h 30m
Zone 194, Map 2
Normal Image
+00°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-01°00'
h1290
STF 2031 rej
STF 2033
NGC 6118
-02°00'
Argelander 75
Baillaud 240
STF 2008
-03°00'
Baillaud 238
δ
Yed Prior
Octans
Delta Oph
STF 3103 rej
Libra
-04°00'
Serpens Cauda
Bur 1453
ε
16h 30m
16h 25m
16h 20m
Epsilon Oph
Yed Posterior
16h 15m
16h 10m
16h 05m
16h 00m
Zone 194, Map 2
Mirror Image
+00°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
-01°00'
h1290
-02°00'
STF 2031 rej
Argelander 75
Baillaud 240
STF 2033
NGC 6118
-03°00'
STF 2008
Baillaud 238
Serpens Cauda
Yed Prior
STF 3103 rej
-04°00'
Delta Oph δ
Octans
Libra
Bur 1453
Epsilon Oph ε
16h 00m
16h 05m
16h 10m
16h 15m
Yed Posterior
16h 20m
16h 25m
16h 30m
Zone 194, Map 3
Normal Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+05°00'
45 Her
Bpm 175
Hercules
+04°00'
36 and 37 Her
STF 3107
Baillaud 2421
STF 2081 rej
+03°00'
Kustner 114
Bur 43
Baillaud 1927
STF 2088 rej
Engelmann 58
19 Oph
λ
Marfik
Lambda Oph
+02°00'
NGC 6240
+01°00'
A. G. 204
STF 2105
Harvard 308
STF 2076
17h 00m
16h 55m
16h 50m
16h 45m
16h 40m
Baillaud 1183
16h 35m
16h 30m
Zone 194, Map 3
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+05°00'
45 Her
Bpm 175
+04°00'
Hercules
36 and 37 Her
Baillaud 2421
STF 2081 rej
+03°00'
Kustner 114
Bur 43
Baillaud 1927
STF 2088 rej
λ
+02°00'
Engelmann 58
Marfik
NGC 6240
19 Oph
Lambda Oph
+01°00'
A. G. 204
STF 2105
Harvard 308
Baillaud 1183
16h 30m
16h 35m
STF 2076
16h 40m
16h 45m
16h 50m
16h 55m
17h 00m
Zone 194, Map 4
Normal Image
Harvard 308
Baillaud 1183
STF 2076
+00°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Roe 95
-02°00'
Baillaud 567
-01°00'
Glasenapp 12
STF 2086
NGC 6218
-04°00'
-03°00'
Baillaud 243
NGC 6254
STF 3106
17h 00m
16h 55m
16h 50m
16h 45m
16h 40m
16h 35m
16h 30m
Zone 194, Map 4
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Baillaud 1183
+00°00'
Harvard 308
STF 2076
-01°00'
Glasenapp 12
STF 2086
Baillaud 567
-02°00'
Roe 95
NGC 6218
NGC 6254
-04°00'
-03°00'
Baillaud 243
STF 3106
16h 30m
16h 35m
16h 40m
16h 45m
16h 50m
16h 55m
17h 00m
Zone 194
1 Reference Star, 38 Double Stars,
2 Globular Clusters, 4 Galaxies
Flamsteed
Harvard 308 ......................................... 14
19 Oph ................................................. 13
36 and 37 Her ...................................... 14
K
Kustner 110............................................ 2
Kustner 114.......................................... 18
A
A 2180 ................................................... 2
A 2233 ................................................... 3
A. G. 204 ............................................. 19
Argelander 75 ........................................ 8
L
Lambda Oph ........................................ 21
N
B
NGC 6070 .............................................. 5
NGC 6100 .............................................. 5
NGC 6118 ............................................ 12
NGC 6218 ............................................ 27
NGC 6240 ............................................ 21
NGC 6254 ............................................ 26
Baillaud 1183....................................... 25
Baillaud 1927....................................... 16
Baillaud 238......................................... 10
Baillaud 240........................................... 9
Baillaud 2421....................................... 19
Baillaud 243......................................... 24
Baillaud 567......................................... 23
Bpm 175 .............................................. 15
Bur 1453 ................................................ 8
Bur 43 .................................................. 20
R
Roe 95 .................................................. 25
S
STF 2008................................................ 7
STF 2027................................................ 4
STF 2031 rej .......................................... 9
STF 2033................................................ 7
STF 2038 rej .......................................... 4
STF 2041................................................ 3
STF 2076.............................................. 22
STF 2081 rej ........................................ 18
STF 2086.............................................. 24
STF 2088 rej ........................................ 15
STF 2105.............................................. 16
STF 3103 rej ........................................ 10
STF 3107.............................................. 17
D
Delta Oph............................................... 6
E
Engelmann 58 ...................................... 20
Epsilon Oph ......................................... 11
G
Glasenapp 12 ....................................... 23
H
h1290 ................................................... 11
-1-
Zone 194
Zone 194, Map 1
Double Stars
Easy
Kustner 110
Position: 1611+0354
A
B
Magnitude
10.28
10.45
Rating: 4 E
Separation PA
—
—
61.5 +
271 +
Year
—
1983
Spectra
F8
Colors
W
W
Notes:
1898: 60.7 @ 269. 6 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.0 inches.
Separation: AB = 6.81 miles.
Distance (LY): 71
Total luminosity (Suns): 0.0543
A 2180
Rating: 4 E
ADS 9988; HD 146563; SAO 121468
Position: 1617+0118
A
B
C
Magnitude
9.08
10.95
11.60
Separation
—
48 =
1.2 +
PA
—
97 312 +
Notes:
AB 1910: 48.1 @ 98. 5 measurements.
AC 1910: 1.1 @ 311. 10 measurements.
-2-
Year
—
1991
1989
Spectra
A3
Colors
W
bW
No
Zone 194
Observations:
C11 at 115x. C was never detected.
Moderate
A 2233
Rating: 4 M
ADS 10063; HD 148267
Position: 1627+0101
A
B
Magnitude
9.50
10.30
Separation PA
—
—
2.7 +
28 +
Year
—
1999
Spectra
F8
Colors
W
W
Notes:
1910: 2.5 @ 25. 18 measurements.
Observations:
C11 at 193x. Nice, faint field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.3 inches.
Separation: AB = 950 feet.
Distance (LY): 45
Total luminosity (Suns): 0.037
Difficult
STF 2041
Rating: 2 D
ADS 10019
Position: 1622+0113
A
B
Magnitude
7.51
10.54
Separation PA
—
—
2.6 359 -
Notes:
1831: 3.1 @ 4. 28 measurements.
-3-
Year
—
1991
Spectra
K0
Colors
rO
pB
Zone 194
Observations:
C8 at 311x. Very nice! It is 15 min N of Sigma Ser.
STF 2038 rej
Rating: 4 D
HD 147737; SAO 121562
Position: 1624+0213
A
B
Magnitude
8.91
11.30
Separation PA
—
—
17.4 +
214 =
Year
—
1989
Spectra
K0
Colors
Y
?
Notes:
1901: 16.5 @ 214. 5 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 25.6 inches.
Separation: AB = 22.0 miles.
Distance (LY): 810
Total luminosity (Suns): 16
STF 2027
Rating: 5 D
ADS 9980; HD 146265
Position: 1615+0416
A
B
Magnitude
8.06
8.24
Separation PA
—
—
1.8 80 +
Notes:
1831: 2.0 @ 75. 58 measurements.
Observations:
C8 at 697x. Very difficult pair.
-4-
Year
—
1998
Spectra
F0
Colors
W?
W?
Zone 194
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 10.5 inches.
Separation: AB = 3.00 miles.
Distance (LY): 1,070 ?
Total luminosity (Suns): 98
Deep Sky Objects
Difficult
NGC 6070
Other Names: UGC 10230, H III 553
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1610+0043
Type: Gal
Surface brightness: 13.7
Class: SA(r)c I-II
Dimensions: 3' x 2'
Magnitude: 12.5
PA: 62
Observations:
C8 at 65x. 6.8m SAO 121396, 8 min to the NW, is tough on the seeing. It has low
surface brightness and will be tough even on a good night— but remember, you are
seeing this galaxy through the Milky Way. The axis runs NE-SW.
Distance (LY): 90,000,000
Radial velocity (km/sec): +2,157
Total luminosity (Suns): 6,400,000,000
NGC 6100
Other Names: UGC 10307
Rating: 5 D
Position: 1617+0048
Type: Gal
Surface brightness: 13.0
Class: (R)SAB(r)a:
Dimensions: 1.6' x 0.9'
Magnitude: 13.0
PA: 120
Observations:
C8 at 206x. It is an amorphous glow with no details, even a discernible nucleus.
Radial velocity (km/sec): +4,854
-5-
Zone 194
Zone 194, Map 2
Reference Star
Delta Oph (1 Oph; Yed Prior, "the leading star of the hand"; Bpm 164; HD 146051;
SAO 141052)
Position: 1614-0342
Mag : 2.73
Spectrum : M1 III
Color : O
Assumed distance: 170 light years
Assumed luminosity (suns): 630
Observations:
C11 at 98x.
Notes:
This star is an infra-red source.
Its partner is Yed Posterior (Epsilon Oph), "the following star of the hand."
AB 1879: 64.6 @ 292. 2 measurements.
AC 1 measurement.
From James Kaler's Star Notes:
Yed Prior deviates some from the norm in being one of the sky's few relatively bright
cool class M giants, rather similar to (but not as luminous as) Scheat, Beta Pegasi. At the
warmer end of class M, the temperature is still only 3800 Kelvin. From its distance, and
allowing for invisible infrared radiation, we find it has a radius of 58 solar. Its measured
angular diameter (0.0095 seconds of arc) and distance give about the same result. If
placed at the center of our Solar System, the star would extend two-thirds of the way to
Mercury.
Though Yed Prior is quite evolved and no longer fusing hydrogen to helium, its
evolutionary status is uncertain. It may still be brightening with a now-quiet helium core;
the core may have begun fusing helium; or it may be in a more advanced state fusing
helium to carbon. Star- studies are often statistical in nature and it is much more difficult
to tell what any individual might be doing. Yed Prior has no known companions nor
significant variation, and as such it is an important star for setting up stellar temperature
scales. It is, however, rather rich in iron (about double the Sun's content) and also has
almost three times as much nitrogen as the Sun, the nitrogen enriched by interior nuclear
processes.
-6-
Zone 194
Double Stars
Easy
STF 2008
Rating: 3 E
ADS 9926; HD 144764; SAO 140971
Position: 1608-0239
A
B
Magnitude
8.70
9.46
Separation PA
—
—
9.1 +
58 =
Year
—
1991
Spectra
F5
Colors
W
pO
Notes:
1831: 8.8 @ 58. 19 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 = 13.6 inches.
Separation: AB = 5.55 miles.
Distance (LY): 391
Total luminosity (Suns): 6
STF 2033
Rating: 3 E
ADS 9992
Position: 1618-0216
A
B
Magnitude
9.06
9.13
Separation PA
—
—
10.8 +
175 -
Year
—
1991
Spectra
A3
Colors
W
bW
Notes:
1829: 10.7 @ 176. 27 measurements. The stars have a small difference in proper
motion.
Observations:
C8 at 104x.
-7-
Zone 194
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.87 inches.
Separation: AB = 17.9 miles.
Distance (LY): 1,060
Total luminosity (Suns): 40
Bur 1453
Rating: 3 E
HD 147512; SAO 141126
Position: 1623-0415
A
B
C
Magnitude
7.34
8.51
13.47
Separation
—
102 +!
69 +
PA
—
23 =
340 =
Year
—
1918
1911
Spectra
G0
A0
Colors
W
W
Notes:
AB 1855: 92 @ 23. 6 measurements. May be optical because Hipparcos gives
different distances (90 and 1,720 light years).
AC 1910: 68 @ 340. 2 measurements.
AD 1910: 69 @ 244. 2 measurements.
Measured in connection with STF 3103 rej.
Observations:
C11 at 98x.
Argelander 75
Rating: 4 E
Position: 1614-0147
A
B
Magnitude
10.46
10.74
Separation PA
—
—
21.4 +
64 +
Year
—
1991
Spectra
F8
G0
Colors
W
pY
Notes:
1918: 21.1 @ 63. 3 measurements.
May be optical because Hipparcos gives different distances (49 and 88 light years).
Observations:
C11 at 98x.
-8-
Zone 194
STF 2031 rej
Rating: 4 E
ADS 9984; HD 146433; SAO 141069
Position: 1617-0139
A
B
C
Magnitude
7.07
8.61
11.10
Separation
—
19.5 93.4 =
PA
—
230 =
24 +
Year
—
1991
1987
Spectra
F8 V
Colors
W
B
?
Notes:
AB 1848: 22.3 @ 230. 12 measurements.
AC 1922: 93.4 @ 21. 2 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.60 inches.
Separation: AB = 4.62 miles; AC = 22.2 miles.
Distance (LY): 152
Total luminosity (Suns): 3.1
Baillaud 240
Rating: 5 E
HD 145994; SAO 141047
Position: 1614-0220
A
B
Magnitude
8.43
10.90
Separation PA
—
—
7.6 +
353 -
Year
—
1993
Notes:
1892: 7.5 @ 354. 2 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.4 inches.
Separation: AB = 6.40 miles.
Distance (LY): 540
Total luminosity (Suns): 11
-9-
Spectra
F5
Colors
W
?
Zone 194
STF 3103 rej
Rating: 5 E
ADS B7583; HD 147219; SAO 141112
Position: 1621-0356
A
B
Magnitude
9.14
10.78
Separation PA
—
—
24.3 304 -
Year
—
1991
Spectra
K5
Colors
Y
O
Notes:
1897: 24.4 @ 305. 6 measurements.
Observations:
C8 at 104x.
Moderate
Baillaud 238
Rating: 5 M
SAO 140958
Position: 1607-0245
A
B
Magnitude
9.10
10.90
Separation PA
—
—
7.3
290
Year
—
1896
Notes:
1 measurement.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 28.6 inches.
Separation: AB = 2,746 feet.
Distance (LY): 46
Total luminosity (Suns): 0.045
- 10 -
Spectra
K2
Colors
Y
?
Zone 194
h1290
Position: 1615-0046
A
B
Magnitude
10.58
13.01
Rating: 5 M
Separation PA
—
—
18.7 +
111 +
Year
—
1983
Spectra
Colors
W
?
Notes:
1895: 16.4 @ 102. 6 measurements.
Observations:
C8 at 104x.
Epsilon Oph
Rating: 5 M
2 Oph; Yed Posterior, "the following star"; Bur 1452; HD 146791; SAO 141086
Position: 1618-0441
A
B
Magnitude
3.23
13.02
Separation PA
—
—
8.3 -!!! 251 +
Year
—
1987
Spectra
G8 III
Colors
Y!
W?
Notes:
1913: 109.9 @ 246. 3 measurements.
Star B is an infra-red source.
From James Kaler's Star Notes:
This star is a giant, being an unusual class G (but just barely, G9.5). Class G and K
giants are known for having the cyanogen molecule (CN) in their atmospheres (indeed,
the molecule is important in their classifications). Yed Posterior stands out a bit as a
"cyanogen-deficient" star, which implies that it belongs more to an older population than
does the Sun, one that occupies a thicker disk in our flat Galaxy. (The Sun is a member of
the "thin-disk" population, in which stars are vigorously being born.) Consistently,
carbon seems somewhat underabundant as well.
Yed Posterior is also a weak source of X-rays, not uncommon among giants of its
class. Though not involved with its Ophiuchan "companion" Yed Prior, Yed Posterior
does have a possible companion. Some two minutes of arc away is a dim 12th magnitude
star about which nothing is known. If a true companion, which seems doubtful, it is a
small red dwarf, is at least 3,600 astronomical units away from its bigger brother, and
orbits with a period of at least 125,000 years. With a mass of somewhere around triple
- 11 -
Zone 194
that of the Sun, Yed Posterior began life as a sparkling blue class B star. It is now on its
way out, and is probably (but uncertainly) just short of beginning to fuse helium in its
core.
Observations:
C8 at 104x. Averted vision helps.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 43.5 inches.
Separation: AB = 1.39 miles.
Distance (LY): 108
Total luminosity (Suns): 49.001
Deep Sky Objects
Difficult
NGC 6118
Other Names: UGC 10350, H II 402
Astronomical League Program: Herschel 400 Club
Rating: 5 D
Position: 1622-0217
Type: Gal
Surface brightness: 13.9
Class: SA(s)c I
Dimensions: 4' x 1'
Magnitude: 12.3
PA: 58
Observations:
C8 at 65x. It has a NE/SW axis and is a little brighter in the middle. Very low surface
brightness.
Distance (LY): 70,000,000
Radial velocity (km/sec): +1,573
Total luminosity (Suns): 7,700,000,000
- 12 -
Zone 194
Zone 194, Map 3
Double Stars
Easy
19 Oph
STF 2096; ADS 10207; HD 151431; SAO 121859
Rating: 1 E
Position: 1647+0204
A
B
C
Magnitude
6.09
9.68
11.30
Separation
—
23.9 +
214.6 +
PA
—
88 194 =
Year
—
1999
1960
Spectra
A2 V
Colors
Y!
dR!
?
Notes:
AB 1832: 22.2 @ 93. 1915
(Franks): 23.2 @ 91. 38 measurements.
AC 1911: 213.5 @ 194. 2
measurements.
Star A is a spectroscopic binary.
The stars share common proper
motion.
Observations:
C8 at 65x. Webb saw them as W and
W, and said this was a "fine low-power
field."
Scale model (in which the Sun is the size
of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 18.4 miles; AC = 165
miles.
19 Oph (STF 2096)
Observed with C8
on 8/10/99; s7, t7
Magnification: 104x
Distance (LY): 493
Total luminosity (Suns): 74
- 13 -
Zone 194
Harvard 308
Rating: 3 E
ADS 10102; HD 149060
Position: 1632+0012
A
B
Magnitude
9.38
9.70
Separation PA
—
—
7.0 +
308 +
Year
—
1962
Spectra
F0
Colors
W
W
Notes:
1892: 6.6 @ 305. 10 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 = 11.3 inches.
Separation: AB = 2.00 miles.
Distance (LY): 183
Total luminosity (Suns): 0.8
36 and 37 Her
Rating: 3 E
STF 2074 rej (BC); CHR 56 (a); SI 31; ADS 10149; HD 150378; SAO 121774
Position: 1641+0413
A
B
C
BC
Magnitude
5.77
6.92
11.40
Separation PA
—
—
69.9 +
229 25.2 +
316 =
Year
—
1994
Spectra
B9.5 V
A3 IV
Colors
bW
W
No
1960
Notes:
AB 1835: 69.6 @ 230. 48 measurements. The stars share a small common proper
motion.
BC 1904: 24.0 @ 316. 2 measurements.
Observations:
C8 at 280x.
- 14 -
Zone 194
Eddy O'Connor (Terara, NSW, Australia) used an 8-inch Dob and noted A and B as
White.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.60 inches; B = 10.1 inches.
Separation: AB = 33.1 miles; BC = 11.9 miles.
Distance (LY): 303
Total luminosity (Suns): 47
Bpm 175
Rating: 3 E
HD 151881; SAO 121892
Position: 1650+0443
A
B
Magnitude
8.90
9.26
Separation PA
—
—
53.6 358 +
Year
—
1991
Spectra
G
Colors
yW
bW
Notes:
1911: 52.6 @ 354. 2 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.4 inches.
Separation: AB = 15.3 miles.
Distance (LY): 183
Total luminosity (Suns): 1.27
STF 2088 rej
Rating: 4 E
ADS 10185; HD 151029; SAO 121826
Position: 1645+0220
A
B
Magnitude
7.50
12.00
Separation PA
—
—
21.2 +
333 -
Notes:
1905: 20.4 @ 335. 4 measurements.
- 15 -
Year
—
1988
Spectra
A2 V
Colors
W
W
Zone 194
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches.
Separation: AB = 10.1 miles.
Distance (LY): 305
Total luminosity (Suns): 7.11
Baillaud 1927
Rating: 4 E
HD 151653
Position: 1649+0237
A
B
Magnitude
9.51
11.50
Separation PA
—
—
14.4
354
Year
—
1909
Spectra
G5
Colors
Y
B
Notes:
1 measurement.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 21.1 inches.
Separation: AB = 4.04 miles.
Distance (LY): 180
Total luminosity (Suns): 0.463
STF 2105
Rating: 4 E
ADS 7776; SAO 121910
Position: 1651+0109
A
B
Magnitude
9.16
10.45
Separation PA
—
—
29.0 129 -
- 16 -
Year
—
1991
Spectra
K0
Colors
dY
O
Zone 194
Notes:
1831: 29.1 @ 130. 15 measurements. The stars have a small difference in proper
motion.
Observations:
C8 at 104x. 21 Oph (7m) is to the N and is a nuisance!
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.0 inches.
Separation: AB = 6.78 miles.
Distance (LY): 150
Total luminosity (Suns): 0.5
STF 3107
Rating: 4 E
ADS 10285; HD 153332; SAO 121974
Position: 1659+0358
A
B
C
D
Magnitude
9.08
9.30
11.60
9.50
Separation
—
1.5 43.3
73.4 -
PA
—
75 -!
322
Year
—
1997
1898
43 +
Spectra
G0
1988
Notes:
AB 1831: 1.6 @ 112. Over 100 measurements.
AC 1 measurement.
AD 1890: 76.4 @ 42. 7 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.0 inches.
Separation: AB = 1.59 miles; AC = 45.9 miles; AD = 77.9 miles.
Distance (LY): 680
Total luminosity (Suns): 17
- 17 -
Colors
W
No
W?
Zone 194
STF 2081 rej
Rating: 5 E
HD 150764; SAO 121807
Position: 1643+0327
A
B
Magnitude
7.40
11.50
Separation PA
—
—
20.4 322 =
Year
—
1983
Spectra
A5
Colors
W
?
Notes:
1901: 21.4 @ 322. 5 measurements.
Observations:
C8 at 83x. Moderate field.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 7.82 inches.
Separation: AB = 10.3 miles.
Distance (LY): 324
Total luminosity (Suns): 9.21
Kustner 114
Position: 1649+0315
A
B
Magnitude
10.36
10.33
Rating: 5 E
Separation PA
—
—
59.4 +
111 +
Notes:
1901: 58.7 @ 110. 6 measurements.
Observations:
C8 at 104x.
- 18 -
Year
—
1983
Spectra
F2
Colors
W
W
Zone 194
Moderate
A. G. 204
Rating: 4 M
ADS 10131; HD 149974
Position: 1638+0139
A
B
Magnitude
9.71
10.83
Separation PA
—
—
4.2 +
15 +
Year
—
1991
Spectra
F5
Colors
W
B?
Notes:
1902: 4.0 @ 13. 13 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.4 inches.
Separation: AB = 1.36 miles.
Distance (LY): 208
Total luminosity (Suns): 0.597
Baillaud 2421
Rating: 4 M
HD 150432; SAO 121781
Position: 1641+0338
A
B
Magnitude
8.36
11.20
Separation PA
—
—
8.9
230
Notes:
1 measurement.
Observations:
C8 at 206x. Averted vision helps.
- 19 -
Year
—
1910
Spectra
K2
Colors
O!
W
Zone 194
Engelmann 58
Bpm 173 (C); HD 151372; SAO 121857
Rating: 5 M
Position: 1647+0215
A
B
C
BC
Magnitude
6.72
8.87
12.60
Separation PA
—
—
149.3 218 75.9
173
Year
—
1991
Spectra
F0
B8
Colors
W
bW
?
1909
Notes:
AB 1887: 150.2 @ 219. 4 measurements. May be optical as Hipparcos shows
different distances for A and B (198 and 960 light years).
BC 1 measurement.
Observations:
C11 at 115x.
Difficult
Bur 43
Rating: 3 D
ADS 10217
Position: 1648+0244
A
B
Magnitude
7.99
8.01
Separation PA
—
—
1.3 +
235 -
Year
—
1997
Notes:
1875: 0.9 @ 246. 55 measurements.
Observations:
C11 at 634x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.4 inches.
Separation: AB = 4,541 feet.
Distance (LY): 425
Total luminosity (Suns): 18
- 20 -
Spectra
G5
Colors
Y
Y
Zone 194
Lambda Oph
Rating: 5 D
10 Oph; Marfik, "the elbow"; STF 2055; ADS 10087; HD 148857; SAO 121658
Position: 1631+0200
A
B
C
D
Magnitude
3.82
5.22
11.00
9.80
Separation
—
1.5 +
119.2 +
314.1 +
PA
—
28 -!
170 =
246 -
Year
—
1999
1960
1921
Spectra
A2 V
A4 V
Colors
Y
Y
?
No
Notes:
AB 1825: 0.8 @ 332. Over 100 measurements. The orbital period is 129.87 years
(Finzi and Giannuzzi, 1955), with a - 0.97" and direct motion. They were closest in
1945.
AC 1912: 118.8 @ 170. 4 measurements. C is physical.
AD 1918: 313.6 @ 247. 2 measurements.
Star A is a spectroscopic binary and rotates at 127 kps.
Observations:
C8 at 697x Webb saw them as Y and B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.40 inches; B = 7.80 inches.
Separation: AB = 2,006 feet; AC = 30.9 miles; AD = 81.4 miles.
Distance (LY): 166
Total luminosity (Suns): 84.2
Deep Sky Objects
Moderate
NGC 6240
Other Names: IC4625; UGC 10592
Astronomical League Program: Herschel II Club
Rating: 5 M
Position: 1653+0225
Type: Gal
Surface brightness: 13.3
Class: Irr pec
Dimensions: 2.2' x 0.9'
- 21 -
Magnitude: 12.9
PA: 20
Zone 194
Notes:
This is a Seyfert galaxy.
This galaxy produced supernova 2000bg (type IIn).
Observations:
C8 at 104x. It shows a very bright nucleus and the faintest, softest halo.
Model (where the Sun is a baseball):
Its diameter would be 69 million miles.
Distance (LY): 336,000,000
Radial velocity (km/sec): +7,339
Luminosity (suns): 61,000,000,000
Zone 194, Map 4
Double Stars
Easy
STF 2076
Rating: 2 E
ADS 10150; SAO 141306
Position: 1641-0009
A
B
C
Magnitude
9.51
10.50
12.90
Separation
—
9.7 +
46.5
PA
—
325 333
Notes:
AB 1832: 9.1 @ 329. 19 measurements.
AC 1 measurement.
Observations:
C11 at 98x.
- 22 -
Year
—
1962
1912
Spectra
F8
Colors
W
rO
?
Zone 194
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.3 inches.
Separation: AB = 3.66 miles; AC = 17.6 miles.
Distance (LY): 242
Total luminosity (Suns): 1.026
Baillaud 567
Rating: 4 E
HD 150297
Position: 1640-0112
A
B
Magnitude
9.46
12.20
Separation PA
—
—
9.5
212
Year
—
1892
Spectra
F0
Colors
W
O?
Notes:
1 measurement.
Observations:
C11 at 98x.
Glasenapp 12
Jonckheere 448 (B); ADS 10175
Rating: 5 E
Position: 1644-0032
A
B
C
Magnitude
10.08
11.70
10.23
Separation
—
2.5 +
102.6
PA
—
143 301
Notes:
AB 1911: 2.4 @ 147. 13 measurements.
AC 1 measurement.
Observations:
C11 at 98x. STF 2086 is only 3 min W.
- 23 -
Year
—
1962
1890
Spectra
G0
Colors
yW
No
W
Zone 194
STF 2086
Rating: 5 E
ADS 10180; HD 150935; SAO 141335
Position: 1644-0033
A
B
Magnitude
7.41
10.39
Separation PA
—
—
13.9 +
156 -
Year
—
1992
Spectra
A0 V
Colors
W
?
Notes:
1831: 13.6 @ 158. 17 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical. However, the stars show similar proper
motion.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 9.00 inches.
Separation: AB = 22.6 miles.
Distance (LY): 1,040
Total luminosity (Suns): 106
Moderate
Baillaud 243
Rating: 4 M
HD 152778; SAO 141442
Position: 1656-0226
A
B
Magnitude
8.85
10.42
Separation PA
—
—
12.5 249 +
Notes:
1897: 12.7 @ 238. 5 measurements.
Observations:
C8 at 104x.
- 24 -
Year
—
1991
Spectra
K0
Colors
yO
dB
Zone 194
Baillaud 1183
Rating: 5 M
HD 149506; SAO 121712
Position: 1635-0004
A
B
Magnitude
9.18
13.14
Separation PA
—
—
11.4 +
224 -
Year
—
1909
Spectra
F5
Colors
W
?
Notes:
1892: 11.3 @ 225. 2 measurements.
Observations:
C11 at 98x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.0 inches.
Separation: AB = 2.47 miles.
Distance (LY): 139
Total luminosity (Suns): 0.324
Roe 95
Rating: 5 M
Position: 1637-0117
A
B
C
Magnitude
10.01
12.10
13.17
Separation
—
7.9 55.2
PA
—
234 +
348
Year
—
1916
1916
Notes:
AB 1892: 8.1 @ 231. 2 measurements.
AC 1 measurement.
Observations:
C11 at 98x.
Distance (LY): 125
Total luminosity (Suns): 0.146
- 25 -
Spectra
Colors
W
O?
W
Zone 194
Deep Sky Objects
Easy
NGC 6254
Other Names: M10
Astronomical Leage Program: Messier Club
Astronomical League Program: Urban Deep Sky Club
Rating: 2 E
Position: 1657-0406
Type: Gc
Dimensions: 8'
Class: 7
Magnitude: 6.6
Notes:
Messier discovered it on May 29,
1764.
Lord Rosse reported a dark lane near
the center.
It is 63 light years in diameter. The
brightest stars are 12.0m and the
horizontal branch is 14.7m.
Absorption in this area robs it of 1.7m.
Observations:
C8 at 65x. It was semi-resolved at high
power. The E half seems brighter. Steve
Coe writes that the globular M12 lies
nearby, and that the inhabitants of any
NGC 6254 (M10)
planets in either globular (assuming there
Globular cluster
are inhabited planets) would see the
Observed with C8 on 7/26/03
other's globular as a 2m blob in their
Magnification: 80x
ASKC Star Party, Louisburg Lake
skies!
C11 at 98x. Semi-resolved, it looks
asymmetric. One chain of slightly brighter stars begins near the center and runs beyond
its edge to the North. Class 8.
Model (where the Sun is a baseball):
Its diameter would be 16,480 miles.
Distance (LY): 22,000
Radial velocity (km/sec): +69
Luminosity (suns): 87,000
- 26 -
Zone 194
NGC 6218
Rating: 4 E
Other Names: M12
Astronomical Leage Program: Messier Club, Urban Deep Sky Club
Position: 1647-0157
Type: Gc
Dimensions: 10'
Class: 9
Magnitude: 8.0
Notes:
Messier discovered it on May 30, 1764. William Herschel resolved it in 1783.
It is 80 light years in diameter. The brightest stars are 12.2m and the horizontal
branch is 14.9m.
Absorption here amounts to about 1.2m.
Observations:
C8 at 104x. It was semi-resolved at 104x and an uninspiring view. Rich field. Steve
Coe writes, "This cluster has a pearly luminescence that is rare in star clusters."
Note the 10m red star to the SE.
C11 at 98x. Very nice, somewhat loose group in a very rich field. A faint trianigle is
superimposed. It is brighter on the N side. Are these cluster members, or foreground
objects? Class estimated to be 8.
Model (where the Sun is a baseball):
Its diameter would be 20,600 miles.
Distance (LY): 22,000
Radial velocity (km/sec): -16
Luminosity (suns): 24,800
- 27 -
Zone 194
Zone 194 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
19 Oph
1647+0204
1E
3
STF 2076
1641-0009
2E
4
STF 2008
1608-0239
3E
2
STF 2033
1618-0216
3E
2
Bur 1453
1623-0415
3E
2
Harvard 308
1632+0012
3E
3
36 and 37 Her
1641+0413
3E
3
Bpm 175
1650+0443
3E
3
Kustner 110
1611+0354
4E
1
Argelander 75
1614-0147
4E
2
A 2180
1617+0118
4E
1
STF 2031 rej
1617-0139
4E
2
Baillaud 567
1640-0112
4E
4
STF 2088 rej
1645+0220
4E
3
Baillaud 1927
1649+0237
4E
3
STF 2105
1651+0109
4E
3
STF 3107
1659+0358
4E
3
Baillaud 240
1614-0220
5E
2
STF 3103 rej
1621-0356
5E
2
Component
A
B
C
A
B
C
A
B
A
B
A
B
C
A
B
A
B
C
BC
A
B
A
B
A
B
A
B
C
A
B
C
A
B
A
B
A
B
A
B
A
B
C
D
A
B
A
B
- 28 -
Mag
6.09
9.68
11.30
9.51
10.50
12.90
8.70
9.46
9.06
9.13
7.34
8.51
13.47
9.38
9.70
5.77
6.92
11.40
8.90
9.26
10.28
10.45
10.46
10.74
9.08
10.95
11.60
7.07
8.61
11.10
9.46
12.20
7.50
12.00
9.51
11.50
9.16
10.45
9.08
9.30
11.60
9.50
8.43
10.90
9.14
10.78
Separation
—
23.9 +
214.6 +
—
9.7 +
46.5
—
9.1 +
—
10.8 +
—
102 +!
69 +
—
7.0 +
—
69.9 +
PA
—
88 214.6 +
—
325 46.5
—
58 =
—
175 —
23 =
69 +
—
308 +
—
229 -
25.2 +
—
53.6 —
61.5 +
—
21.4 +
—
48 =
1.2 +
—
19.5 93.4 =
—
9.5
—
21.2 +
—
14.4
—
29.0 —
1.5 43.3
73.4 —
7.6 +
—
24.3 -
316 =
—
358 +
—
271 +
—
64 +
—
97 1.2 +
—
230 =
93.4 =
—
212
—
333 —
354
—
129 —
75 -!
43.3
73.4 —
353 —
304 -
Zone 194
Designation
Position
Rating
Map
STF 2081 rej
1643+0327
5E
3
STF 2086
1644-0033
5E
4
Glasenapp 12
1644-0032
5E
4
Kustner 114
1649+0315
5E
3
A 2233
1627+0101
4M
1
A. G. 204
1638+0139
4M
3
Baillaud 2421
1641+0338
4M
3
Baillaud 243
1656-0226
4M
4
Baillaud 238
1607-0245
5M
2
h1290
1615-0046
5M
2
Epsilon Oph
1618-0441
5M
2
Baillaud 1183
1635-0004
5M
4
Roe 95
1637-0117
5M
4
Engelmann 58
1647+0215
5M
3
STF 2041
1622+0113
2D
1
Bur 43
1648+0244
3D
3
STF 2038 rej
1624+0213
4D
1
STF 2027
1615+0416
5D
1
Lambda Oph
1631+0200
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
C
A
B
C
BC
A
B
A
B
A
B
A
B
A
B
C
D
- 29 -
Mag
7.40
11.50
7.41
10.39
10.08
11.70
10.23
10.36
10.33
9.50
10.30
9.71
10.83
8.36
11.20
8.85
10.42
9.10
10.90
10.58
13.01
3.23
13.02
9.18
13.14
10.01
12.10
13.17
6.72
8.87
12.60
7.51
10.54
7.99
8.01
8.91
11.30
8.06
8.24
3.82
5.22
11.00
9.80
Separation
—
20.4 —
13.9 +
—
2.5 +
102.6
—
59.4 +
—
2.7 +
—
4.2 +
—
8.9
—
12.5 —
7.3
—
18.7 +
—
8.3 -!!!
—
11.4 +
—
7.9 55.2
—
149.3 -
PA
—
322 =
—
156 —
143 102.6
—
111 +
—
28 +
—
15 +
—
230
—
249 +
—
290
—
111 +
—
251 +
—
224 —
234 +
55.2
—
218 -
75.9
—
2.6 —
1.3 +
—
17.4 +
—
1.8 —
1.5 +
119.2 +
314.1 +
173
—
359 —
235 —
214 =
—
80 +
—
28 -!
119.2 +
314.1 +
Zone 194
Deep Sky Objects
Object
NGC 6254
NGC 6218
NGC 6240
NGC 6070
NGC 6100
NGC 6118
Position
1657-0406
1647-0157
1653+0225
1610+0043
1617+0048
1622-0217
Rating
2E
4E
5M
5D
5D
5D
Map
4
4
3
1
1
2
Type
Gc (7)
Gc (9)
Gal (Irr pec)
Gal (SA(r)c I-II)
Gal ((R)SAB(r)a:)
Gal (SA(s)c I)
- 30 -
Specifications
Surface
Mag
Br
6.6
8.0
12.9
13.3
12.5
13.7
13.0
13.0
12.3
13.9
Population