Zone 98, Master Map
Normal View
Zone Master, Normal View, 10 deg FOV
c
+42°00'
e
+44°00'
φ
χ
+40°00'
σ
Hercules
Boo
Corona Borealis
The Wall
M13
17h 00m
16h 48m
λ
d
τ
Great Cluster in Hercules
Hercules Globular Cluster
16h 36m
κ
16h 24m
σ
16h 12m
16h 00m
+36°00'
f
+38°00'
η
Zone 98, Map 1
Normal Image
+45°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Espin 1253
+44°00'
φ
Espin 1556
+43°00'
Espin 631
Bur 815
Argelander 76
σ
+42°00'
STF 2024 rej
STF 2001
STF 1991
+41°00'
h1291
STF 2030
OS 313
STF 2065
16h 30m
NGC 6058
STF 2014
16h 24m
16h 18m
16h 12m
16h 06m
16h 00m
Zone 98, Map 1
Mirror Image
+45°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Espin 1253
+44°00'
φ
+43°00'
Espin 1556
Bur 815
Argelander 76
σ
STF 2001
STF 1991
+42°00'
STF 2024 rej
+41°00'
h1291
STF 2030
NGC 6058
OS 313
STF 2014
16h 00m
16h 06m
16h 12m
16h 18m
16h 24m
16h 30m
Zone 98, Map 2
Normal Image
OS 313
STF 2065
+40°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 2014
A. G. 200
NGC 6166
OS 304
STF 2067
h2801
Pulkovo 15
Kustner 53
Dolidze 5
Ali 864
λ
+38°00'
h584
+39°00'
Corona Borealis
h579
+37°00'
h261
h580
STF 2044
h258
16h 30m
16h 24m
16h 18m
16h 12m
16h 06m
16h 00m
+36°00'
τ
Kustner 112
Zone 98, Map 2
Mirror Image
OS 313
STF 2014
A. G. 200
+40°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 6166
h584
OS 304
h2801
Pulkovo 15
Kustner 53
Dolidze 5
Ali 864
Lambda CrB
h579
h580
+37°00'
h261
STF 2044
τ
Kustner 112
h258
+36°00'
λ
+38°00'
+39°00'
Corona Borealis
h577
16h 00m
16h 06m
16h 12m
16h 18m
16h 24m
16h 30m
Zone 98, Map 3
Normal Image
+45°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Espin 2655
+44°00'
OS 317
Barton 341
Kustner 54
Espin 631
Bur 815
Espin 633
+43°00'
Dembowski 15
NGC 6239
+41°00'
+42°00'
σ
A 1868
OS 313
STF 2065
17h 00m
16h 54m
16h 48m
16h 42m
16h 36m
16h 30m
Zone 98, Map 3
Mirror Image
+45°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Espin 2655
+44°00'
OS 317
Barton 341
Kustner 54
Dembowski 15
+43°00'
Espin 631
Bur 815
Espin 633
NGC 6239
+41°00'
+42°00'
σ
A 1868
OS 313
STF 2065
16h 30m
16h 36m
16h 42m
16h 48m
16h 54m
17h 00m
Zone 98, Map 4
Normal Image
+40°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
OS 313
STF 2065
STF 2067
STF 2080
Ali 864
h587
+38°00'
LDS 985
Eta Herη
+39°00'
NGC 6166
+37°00'
h261
Roe 49
Bur 952
NGC 6207
M13
The Wall
NGC 6205
Great Cluster in Hercules
Hercules Globular Cluster
+36°00'
h588
STF 2104
STF 2101
17h 00m
16h 54m
16h 48m
16h 42m
16h 36m
16h 30m
Zone 98, Map 4
Mirror Image
+40°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
OS 313
STF 2065
LDS 985
STF 2067
η
+39°00'
NGC 6166
Eta Her
+38°00'
STF 2080
Dolidze 5
Ali 864
+37°00'
h587
h261
Roe 49
Bur 952
NGC 6207
M13
Hercules Globular Cluster
The Wall
h588
Great Cluster in Hercules
NGC 6205
+36°00'
Kustner 112
STF 2104
STF 2101
16h 30m
16h 36m
16h 42m
16h 48m
16h 54m
17h 00m
Zone 98
Index
38 Double Stars, 1 Planetary Nebula, 1 Open Cluster,
1 Globular Cluster, 3 Galaxies
A
K
A 1868...................................................... 17
A. G. 200 ................................................. 11
Ali 864 ..................................................... 13
Argelander 76............................................ 5
Kustner 112 ............................................. 10
Kustner 53 ................................................. 8
Kustner 54 ............................................... 16
B
LDS 985 ................................................... 23
Barton 341 ............................................... 16
Bur 815 ...................................................... 6
Bur 952 .................................................... 22
N
L
Dembowski 15 ........................................ 18
Dolidze-Dzimselejsvili 5 ....................... 14
NGC 6058.................................................. 7
NGC 6166................................................ 14
NGC 6205................................................ 27
NGC 6207................................................ 29
NGC 6239................................................ 20
E
O
Espin 1556 ................................................. 4
Espin 631 ................................................. 17
Eta Her ..................................................... 24
OS 304 ..................................................... 11
OS 313 ..................................................... 18
OS 317 ..................................................... 19
H
P
h1291 .......................................................... 5
h261 .......................................................... 10
h2801 .......................................................... 9
h579 ............................................................ 9
h580 .......................................................... 12
h584 .......................................................... 12
h587 .......................................................... 23
h588 .......................................................... 26
Pulkovo 15 ............................................... 13
D
R
Roe 49 ...................................................... 24
S
STF 2001 ................................................... 4
STF 2014 ................................................... 3
STF 2024 rej.............................................. 3
STF 2030 ................................................... 6
-1-
Zone 98
STF 2044 ................................................... 8
STF 2065 ................................................. 15
STF 2067 ................................................. 26
STF 2080 ................................................. 21
STF 2101 ................................................. 25
STF 2104 ................................................. 21
-2-
Zone 98
Zone 98, Map 1
Double Stars
Easy
STF 2014
ADS 9938; HD 145312; SAO 45908
Rating: 3 E
Position: 1609+4003
A
B
Magnitude
8.43
10.53
Separation PA
—
—
8.4 +
91 =
Year
—
1991
Spectra
F2
Colors
bW
pO
Notes:
1830: 8.2 @ 91. 14 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.0 inches.
Separation: AB = 10.5 miles.
Distance (LY): 800
Total luminosity (Suns): 22
STF 2024 rej
ADS 9962; HD 145931; SAO 45957; H IV 115
Rating: 3 E
Position: 1612+4222
A
B
Magnitude
5.86
10.73
Separation PA
—
—
23.7 44 =
-3-
Year
—
1999
Spectra
K4 II
F6 V
Colors
O
W
Zone 98
Notes:
1900: 23.8 @ 44. 7 measurements. The primary is an infra-red source.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 258 inches; B = 16.0 inches.
Separation: AB = 34.4 miles.
Distance (LY): 930
Total luminosity (Suns): 306
STF 2001
ADS 9895; HD 143874; SAO 45842
Rating: 4 E
Position: 1601+4150
A
B
Magnitude
10.01
10.98
Separation PA
—
—
11.8 +
167 -
Year
—
1991
Spectra
G
Colors
yW
dO
Notes:
1829: 11.6 @ 170. 119 measurements. This system may be optical as Hipparcos
shows different distances (85 and 147 light years).
Observations:
C11 at 115x. Very nice field!
Espin 1556
ADS 9892; SAO 45839
Position: 1601+4338
A
B
Magnitude
9.78
11.20
Separation PA
—
—
9.7
217
Notes:
1 measurement.
-4-
Year
—
1916
Spectra
K0
Colors
Y
W?
Zone 98
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.9 inches.
Separation: AB = 3.98 miles.
Distance (LY): 263
Total luminosity (Suns): 0.829
h1291
ADS B7573; SAO 46000
Rating: 4 E
Position: 1616+4142
A
B
Magnitude
9.73
11.42
Separation PA
—
—
19.2 +
114 =
Year
—
1926
Spectra
K5
Colors
O
W?
Notes:
1894: 18.9 @ 114. 4 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 37.9 inches.
Separation: AB = 20.7 miles.
Distance (LY): 690
Total luminosity (Suns): 6
Argelander 76
Rating: 4 E
Position: 1623+4251
A
B
Magnitude
11.04
11.10
Separation PA
—
—
56
250
Notes:
1 measurement.
-5-
Year
—
1892
Spectra
F8
Colors
W
W
Zone 98
Observations:
C11 at 115x.
STF 2030
ADS 9968; HD 146080; SAO 45965
Rating: 5 E
Position: 1613+4047
A
B
Magnitude
7.78
10.37
Separation PA
—
—
5.8 +
240 +
Year
—
1996
Spectra
A0
Colors
W
R
Notes:
1831: 5.5 @ 238. 13 measurements.
Observations:
C8 at 206x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 6.04 inches.
Separation: AB = 4.46 miles.
Distance (LY): 493
Total luminosity (Suns): 16
Moderate
Bur 815
ADS 10067; SAO 46094
Rating: 4 M
Position: 1627+4255
A
B
C
Magnitude
8.69
10.93
12.20
Separation
—
17 +
68 =
PA
—
331 161 =
Notes:
AB 1881: 6.4 @ 348; 1958: 17 @ 331.
AC 1901: 68 @ 161; 1910, 68 @ 161.
-6-
Year
—
1958
Spectra
Colors
yW
?
?
Zone 98
C shows a different proper motion.
Observations:
C8 at 104x. Use averted vision for the companions.
Deep Sky Objects
Moderate
NGC 6058
Other Names: PK 64+48.1; H III 637
Astronomical League Program: Herschel II Club
Rating: 3 M
Position: 1604+4041
Type : Pn
Dimensions: 25'
Class: 3
Magnitude : 12.0
Observations:
C8 at 65x. It is near the
center of a triangle of 11m and
12m stars, with 10 min long
sides. It is very faint but
magnifies well and appears
uneven and splotchy.
C11 at 115x. It is framed
by a 10m-11m triangle of stars.
It has a small greenish disc.
With the O-III filter, it takes
on a granular appearance. At
339x with the O-III, it shows
an oval disc.
Model (where the Sun is a
baseball):
Diameter = 19,900 miles
NGC 6058
Planetary nebula (3)
Observed with C8 on 7/3/03
Magnification: 80x + O-III
Distance (LY): 10,130
Luminosity (suns): 110
-7-
Zone 98
Zone 98, Map 2
Double Stars
Easy
STF 2044
ADS 10044; HD 148086; SAO 65276
Rating: 3 E
Position: 1624+3702
A
B
Magnitude
7.77
8.12
Separation PA
—
—
8.3 340 -
Year
—
1995
Spectra
K0
Colors
W
O
Notes:
1830: 8.5 @ 347. 74 measurements. The stars show similar proper motions.
Observations:
C8 at 83x. Webb wrote that it was "very pretty."
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 23.9 inches.
Separation: AB = 4.44 miles.
Distance (LY): 343
Total luminosity (Suns): 10
Kustner 53
ADS 10032
Rating: 4 E
Position: 1623+3815
A
B
Magnitude
9.44
10.29
Separation PA
—
—
5.2 49 =
-8-
Year
—
1999
Spectra
F8
Colors
W
W?
Zone 98
Notes:
1901: 5.5 @ 49. 22 measurements.
Observations:
C11 at 339x.
h579
B 7481; HD 143629; SAO 65016
Rating: 5 E
Position: 1600+3746
A
B
Magnitude
9.44
12.58
Separation PA
—
—
29.7
100
Year
—
1909
Spectra
K2
Colors
Y
?
Notes:
1 measurement.
Observations:
C8 at 104x.
h2801
B 7566
Rating: 5 E
Position: 1615+3854
A
B
Magnitude
10.01
12.41
Separation PA
—
—
28.4 +
213 -
Year
—
1926
Notes:
1914: 27.8 @ 214. 2 measurements.
The Tycho-2 Catalogue indicates a single star entry.
Observations:
C8 at 104x.
-9-
Spectra
F8
Colors
W
?
Zone 98
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.7 inches.
Separation: AB = 5.40 miles.
Distance (LY): 122
Total luminosity (Suns): 0.11
Kustner 112
Rating: 5 E
Position: 1627+3626
A
B
Magnitude
10.70
10.91
Separation PA
—
—
58.4 278 -
Year
—
1984
Spectra
F8
Colors
Y
W
Notes:
1901: 61.6 @ 282. 4 measurements.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.3 inches.
Separation: AB = 4.55 miles.
Distance (LY): 50
Total luminosity (Suns): 0.027
h261
B 7647
Rating: 5 E
Position: 1628+3725
A
B
Magnitude
9.94
11.11
Separation PA
—
—
15.0
88
Notes:
1 measurement.
Observations:
C8 at 104x.
- 10 -
Year
—
1820
Spectra
Colors
W
R?
Zone 98
Moderate
A. G. 200
ADS 9893
Rating: 4 M
Position: 1601+3936
A
B
Magnitude
10.62
10.94
Separation PA
—
—
3.2 216 +
Year
—
1991
Spectra
Colors
W
yO
Notes:
1894: 3.2 @ 209. 14 measurements.
Observations:
C11 at 115x. Faint pair.
OS 304
ADS 9887; HD 143806; SAO 65025
Rating: 5 M
Position: 1601+3911
A
B
Magnitude
6.74
10.57
Separation PA
—
—
10.7 +! 173 -
Year
—
1998
Notes:
1843: 0.9 @ 176. 9 measurements.
Observations:
C8 at 83x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.62 inches.
Separation: AB = 6.77 miles.
Distance (LY): 406
Total luminosity (Suns): 28
- 11 -
Spectra
A0
Colors
Y
?
Zone 98
h580
SAO 65042
Rating: 5 M
Position: 1603+3705
A
B
Magnitude
9.18
12.20
Separation PA
—
—
18.0
15
Year
—
1820
Spectra
A5
Colors
W
?
Notes:
1 measurement.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.71 inches.
Separation: AB = 5.08 miles.
Distance (LY): 181
Total luminosity (Suns): 0.569
h584
SAO 65208
Rating: 5 M
Position: 1618+3914
A
B
Magnitude
10.11
11.50
Separation PA
—
—
15.8 232 -
Notes:
1903: 16.3 @ 241. 2 measurements.
Observations:
C11 at 115x.
- 12 -
Year
—
1926
Spectra
G0
Colors
yW
?
Zone 98
Pulkovo 15
Rating: 5 M
Position: 1623+3819
A
B
Magnitude
10.75
11.20
Separation PA
—
—
2.5 +
31 -
Year
—
1998
Spectra
Colors
W
W
Notes:
1970: 2.3 @ 33. 7 measurements.
Observations:
C11 at 339x.
Ali 864
Rating: 5 M
Position: 1627+3801
A
B
Magnitude
10.71
12.90
Separation PA
—
—
8.1
61
Year
—
1931
Notes:
1 measurement.
Observations:
C11 at 115x.
Distance (LY): 65
Total luminosity (Suns): 0.020
- 13 -
Spectra
Colors
O
W?
Zone 98
Deep Sky Objects
Moderate
Dolidze-Dzimselejsvili 5
Position: 1627+3804
Type : Oc
Dimensions: 27'
Rating: 5 M
Class: III 1 p
Magnitude : 11.0
Observations:
C11 at 98x. Very sparse, with a large spread in magnitudes. I counted 9 stars.
Difficult
NGC 6166
Other Names: UGC 10409
Rating: 5 D
Position: 1629+3933
Type : Gal
Class: E+2 pec
Magnitude : 11.8
Surface brightness: 13.1
Dimensions: 2.2' x 1.7'
Observations:
C11 at 140x. Small but bright,
and rapidly brightens to the center.
Five field stars, including one 10m
one about 10 min E.
Model (where the Sun is a
baseball):
Diameter = 80 million miles
Distance (LY): 390,000,000
Radial velocity (km/sec): +9,100
6166
Luminosity (suns): NGC
227,000,000,000
Galaxy (E+2 pec)
Observed with C11 on 7/4/03
Magnification: 140x
- 14 -
Zone 98
Zone 98, Map 3
Double Stars
Easy
STF 2065
SAO 46153
Rating: 3 E
Position: 1633+3959
A
B
C
Magnitude
9.12
9.70
13.10
Separation
—
31.7 +
79.7
PA
—
215 26
Year
—
1991
1909
Spectra
F2
Colors
W
W
Notes:
AB 1830: 30.5 @ 219. 17 measurements. Hipparcos/Tycho data show different
distances for these stars; they may be optical.
AC 1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 12.5 inches.
Separation: AB = 53.4 miles; AC = 134 miles.
Distance (LY): 1,080
Total luminosity (Suns): 33
- 15 -
Zone 98
Kustner 54
ADS 10176; HD 151057; SAO 46241
Rating: 4 E
Position: 1643+4355
A
B
Magnitude
8.92
10.70
Separation PA
—
—
8.6 95 -
Year
—
1918
Spectra
G5
Colors
Y
O!
Notes:
1894: 9.9 @ 101. 7 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.5 inches.
Separation: AB = 3.94 miles.
Distance (LY): 294
Total luminosity (Suns): 2.22
Barton 341
Rating: 5 E
Position: 1654+4355
A
B
Magnitude
10.22
10.40
Separation PA
—
—
4.0 +
259 -
Year
—
1988
Notes:
1893: 3.3 @ 276. 3 measurements.
Observations:
C11 at 115x! It looks fainter than the listed magnitudes.
- 16 -
Spectra
Colors
W
W
Zone 98
Moderate
A 1868
ADS 10247; SAO 46342
Rating: 3 M
Position: 1653+4045
A
B
Magnitude
9.88
10.13
Separation PA
—
—
2.1 +
303 -
Year
—
1999
Spectra
K0
Colors
Y
W?
Notes:
1908: 1.7 @ 304. 19 measurements.
Observations:
C11 at 339x.
Espin 631
ADS 10123; HD 149820; SAO 46172
Rating: 5 M
Position: 1635+4325
A
B
Magnitude
8.60
11.80
Separation PA
—
—
10.3 +
163 +
Year
—
1952
Notes:
1908: 9.8 @ 162. 3 measurements.
Observations:
C8 at 104x. Averted vision is a help in seeing B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.1 inches.
Separation: AB = 5.04 miles.
Distance (LY): 314
Total luminosity (Suns): 3.15
- 17 -
Spectra
G5
Colors
W
?
Zone 98
Difficult
OS 313
ADS 10111; HD 149379; SAO 46152
Rating: 3 D
Position: 1633+4007
A
B
Magnitude
8.01
8.35
Separation PA
—
—
0.9 +
132 -
Year
—
1999
Spectra
F9 IV
Colors
W
bW
Notes:
1843: 0.8 @ 159. Over 100 measurements.
Called G5II comp? by Bidelman.
Observations:
C-11 at 634x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 31.5 inches.
Separation: AB = 1.50 miles.
Distance (LY): 1,070
Total luminosity (Suns): 192
Dembowski 15
ADS 10188; HD 151188; SAO 46250
Rating: 4 D
Position: 1644+4329
A
B
Magnitude
9.15
9.32
Separation PA
—
—
0.6 112 -
Year
—
1998
Spectra
K6 V
Colors
O
O
Notes:
1869: 0.9 @ 133. Over 100 measurements.
The orbit takes 115 years, with a semi-major axis of 0.93" and retrograde motion..
Observations:
C8 at 280x.
- 18 -
Zone 98
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 1.65 inches.
Separation: AB = 422 feet.
Distance (LY): 89
Total luminosity (Suns): 0.44
OS 317
ADS 10246; HD 152733; SAO 46344
Rating: 4 D
Position: 1653+4424
A
B
C
Magnitude
8.10
12.99
9.19
Separation
—
22.3 +
126.1 +
PA
—
204 317 -
Year
—
1989
1989
Spectra
G5
Colors
W
?
W
Notes:
AB 1843: 15.4 @ 234. 15 measurements.
AC 1874: 113.40 @ 318. 15 measurements.
The stars have different proper motions. Hipparcos shows the C star to be at a
distance of 185 light years.
Observations:
C8 at 104x. Use averted vision to see B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.5 inches.
Separation: AB = 14.3 miles; AC = 80.4 miles.
Distance (LY): 409
Total luminosity (Suns): 11.08
- 19 -
Zone 98
Deep Sky Objects
Difficult
NGC 6239
Other Names: UGC 10577
Astronomical League Program: Herschel II Club
Rating: 5 D
Position: 1650+4244
Type : Gal
Surface brightness: 13.2
Class: SB(s)b pec?
Dimensions: 2.3' x 1.0'
Magnitude : 12.4
PA: 118
Observations:
C11 at 193x. Very faint and small; difficult glow with a center that is not brighter.
Distance: 50,000,000 light years
Radial velocity (km/sec): +923
Luminosity: 2,200,000,000 Suns
- 20 -
Zone 98
Zone 98, Map 4
Double Stars
Easy
STF 2104
ADS 10224; HD 151878; SAO 65569
Rating: 3 E
Position: 1649+3555
A
B
Magnitude
7.21
8.72
Separation PA
—
—
5.8 21 +
Year
—
1996
Spectra
F2
Colors
W
B
Notes:
1829: 5.9 @ 20. 54 measurements.
Observations:
C8 at 206x. Webb saw them as W and W and said they were "very pretty."
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 11.1 inches.
Separation: AB = 4.97 miles.
Distance (LY): 550
Total luminosity (Suns): 35
STF 2080
ADS 10138; SAO 65455
Rating: 4 E
Position: 1639+3820
A
B
C
D
Magnitude
8.81
13.00
11.69
8.20
Separation
—
0.9 -!
210 +!!
450
PA
—
4 -!
220=
240
- 21 -
Year
—
1968
1921
1910
Spectra
K0
Colors
Y
No
W?
W
Zone 98
Notes:
AB 1830: 5.6 @ 29. 20 measurements.
AC 1910: 109.5 @ 220. 2 measurements.
Observations:
C11 at 115x. B was not detected.
Bur 952
ADS 10124
Rating: 5 E
Position: 1635+3655
A
B
C
D
Magnitude
8.45
10.83
14.10
11.76
Separation
—
3.3 2.4 +
91 +
PA
—
148 +
206 265 -
Year
—
1991
1963
1991
Spectra
G0
Notes:
AB 1880: 3.8 @ 146. 14 measurements.
AC 1892: 2.1 @ 244. 4 measurements.
AD 1913: 89 @ 267. 3 measurements.
Observations:
C11 at 193x. C was never detected.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.4 inches.
Separation: AB = 1.41 miles; AC = 1.02 miles; AD = 39.0 miles.
Distance (LY): 275
Total luminosity (Suns): 2.87
- 22 -
Colors
yW
W
No
W
Zone 98
LDS 985
HD 149732; SAO 65408
Rating: 5 E
Position: 1635+3859
A
B
Magnitude
8.94
11.64
Separation PA
—
—
55.9 85 +
Year
—
1991
Spectra
G5
Colors
Y
?
Notes:
1930: 56.7 @ 84. 3 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.5 inches.
Separation: AB = 29.9 miles.
Distance (LY): 343
Total luminosity (Suns): 2.75
h587
HD 150510; SAO 65470
Rating: 5 E
Position: 1640+3731
A
B
Magnitude
8.61
11.87
Separation PA
—
—
17.7 +
294 -
Notes:
1880: 16.5 @ 302. 6 measurements.
Observations:
C8 at 104x.
- 23 -
Year
—
1933
Spectra
G5
Colors
W
?
Zone 98
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 20.1 inches.
Separation: AB = 3.97 miles.
Distance (LY): 144
Total luminosity (Suns): 0.63
Eta Her
STF 2093 rej; HD 150997; SAO 65504
Rating: 5 E
Position: 1643+3855
A
B
Magnitude
3.58
12.50
Separation PA
—
—
116.0 +
265 +
Year
—
1991
Spectra
G8 IIIb
Colors
dY!
W?
Notes:
1879: 113.7 @ 261. 7 measurements.
Observations:
C11 at 115x. Great, rich hue in A.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 43.5 inches.
Separation: AB = 20.3 miles.
Distance (LY): 112
Total luminosity (Suns): 36
Roe 49
ADS 10198; SAO 65535
Rating: 5 E
Position: 1646+3705
A
B
Magnitude
9.13
11.00
Separation PA
—
—
11.4 +
93 -
Notes:
1910: 10.8 @ 95. 3 measurements.
- 24 -
Year
—
1933
Spectra
K2
Colors
Y
W?
Zone 98
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 28.7 inches.
Separation: AB = 3.94 miles.
Distance (LY): 222
Total luminosity (Suns): 1.04
Moderate
STF 2101
ADS 10203; HD 151428; SAO 65537
Rating: 2 M
Position: 1646+3538
A
B
Magnitude
7.33
9.52
Separation PA
—
—
4.1 49 -
Year
—
1998
Spectra
GO V
Notes:
1829: 4.3 @ 60. 50 measurements.
Observations:
C8 at 104x. Rich field. John Ryan (Salamanca, Spain; 8" SCT) says B, B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.45 inches.
Separation: AB = 1.23 miles.
Distance (LY): 193
Total luminosity (Suns): 3.8
- 25 -
Colors
W
R
Zone 98
STF 2067
ADS 10117; SAO 65381
Rating: 4 M
Position: 1633+3855
A
B
Magnitude
9.47
10.41
Separation PA
—
—
2.8 +
297 -
Year
—
1991
Spectra
F8
Colors
W
W
Notes:
1829: 2.1 @ 300. 20 measurements.
Observations:
C11 at 339x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.3 inches.
Separation: AB = 2.27 miles.
Distance (LY): 520
Total luminosity (Suns): 4.91
h588
Rating: 5 M
Position: 1658+3625
A
B
Magnitude
9.88
12.40
Separation PA
—
—
24.0
100
Notes:
1 measurement.
Observations:
C11 at 115x.
- 26 -
Year
—
1906
Spectra
F8
Colors
W
?
Zone 98
Deep Sky Objects
Easy
NGC 6205
Rating: 1 E
Other Names: The Great Hercules Cluster, M13
Astronomical Leage Program: Messier Club; Urban Deep Sky Club
Position: 1642+3628
Type : Gc
Dimensions: 23'
Class: 5
Magnitude : 5.7
Cluster population: 500,000
Notes:
It was discovered by Halley in 1714. Bevis also mentioned it in 1786. De Cheseaux
listed in his 1746 catalog but never observed it because he did not have its coordinates
and apparently could not locate it.
Messier added it to his list on Jun 1, 1764. He described it as a "nebula without star."
William Herschel was the first to resolve it into stars (1784).
It is 160 light years in diameter. If its stars were grains of sand, it would be 300 miles
in diameter and the sand grains would be 3 miles apart!
The brightest stars are red giants some 2,000 times brighter than the sun and shine at
11m (the Sun would be 19m at this distance). There are no blue giants in the cluster. On
the H-R diagram, the Main Sequence turn-off point falls a little over midway down the
Main Sequence (absolute magnitude +4.1), implying an age of around 10 billion years.
The total mass of M13 is something like 500,000 solar masses.
The brightest stars are 11.8m and the horizontal branch is 15.0m.
Observations:
C8 at 65x. Awesome! Resolved at low power, it takes high power very well. It looks
a little flat on the E side. Steve Coe mentions that three dark, thin lanes seem to trisect it
into unequal thirds, giving rise to a feature called "the propellor." In a letter to Astronomy
Magazine, Alister Ling, an amateur from Edmonton, Canada wrote, "The intersection of
the Y-shape in the dark lanes is oriented at the top of the [cluster]. I’ve found that
spotting these lanes requires at least a 6-inch telescope and 200x... In 1855, Lord Rosse
stated the lanes ‘do not join in the center, but to the southeast.’ Yet observers today often
mistakenly look for the dark lanes in the middle of the cluster and wonder why they can’t
find them." According to "The Backyard Astronomer" column in the June 1986
Astronomy, "These are not ‘holes’ in the cluster but rather perceptual effects of seeing
more bright stars at one place and less at another."
C11 at 98x. On a hazy night, it spanned over 1/3 of the fov. It was well-resolved all
across its face, and steadily gets denser toward the core. A wide pair of stars is 5 min W.
- 27 -
Zone 98
Model (where the Sun is a baseball):
Its diameter would be 53,840 miles, with its stars 340 miles apart.
Distance (LY): 25,000
Luminosity (suns): 256,600
NGC 6205 (M13)
Globular cluster
Observed with C8 on 7/6/95
Magnification: 100x
- 28 -
Zone 98
Moderate
NGC 6207
Other Names: UGC 10521; H II 701
Astronomical League Program: Herschel 400 Club
Rating: 3 M
Position: 1643+3650
Type : Gal
Surface brightness: 12.8
Class: SA(s)c III
Dimensions: 2' x 1'
Magnitude : 12.3
PA: 15
Observations:
C8 at 83x. It has a stellar nucleus (or interposing star) and misty halo. Its axis runs N
to S. Rich field.
C11 at 193x. I got a N-S oval with a very gradually brighter center with a suddenly
brighter stellar core.
Model (where the Sun is a baseball):
Its diameter would be 8.6 million miles.
Distance (LY): 46,000,000
Luminosity (suns): 2,000,000,000
Radial velocity (km/sec): +1,073
- 29 -
Zone 98
Zone 98 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
STF 2014
1609+4003
3E
1
STF 2024 rej
1612+4222
3E
1
STF 2044
1624+3702
3E
2
STF 2065
1633+3959
3E
3
STF 2104
1649+3555
3E
4
STF 2001
1601+4150
4E
1
Espin 1556
1601+4338
4E
1
h1291
1616+4142
4E
1
Kustner 53
1623+3815
4E
2
Argelander 76
1623+4251
4E
1
STF 2080
1639+3820
4E
4
Kustner 54
1643+4355
4E
3
h579
1600+3746
5E
2
STF 2030
1613+4047
5E
1
h2801
1615+3854
5E
2
Kustner 112
1627+3626
5E
2
h261
1628+3725
5E
2
LDS 985
1635+3859
5E
4
Bur 952
1635+3655
5E
4
h587
1640+3731
5E
4
Eta Her
1643+3855
5E
4
Component
A
B
A
B
A
B
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
D
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
D
A
B
A
B
- 30 -
Mag
8.43
10.53
5.86
10.73
7.77
8.12
9.12
9.70
13.10
7.21
8.72
10.01
10.98
9.78
11.20
9.73
11.42
9.44
10.29
11.04
11.10
8.81
13.00
11.69
8.20
8.92
10.70
9.44
12.58
7.78
10.37
10.01
12.41
10.70
10.91
9.94
11.11
8.94
11.64
8.45
10.83
14.10
11.76
8.61
11.87
3.58
12.50
Separation
—
8.4 +
—
23.7 —
8.3 —
31.7 +
79.7
—
5.8 —
11.8 +
—
9.7
—
19.2 +
—
5.2 —
56
—
0.9 -!
210 +!!
450
—
8.6 —
29.7
—
5.8 +
—
28.4 +
—
58.4 —
15.0
—
55.9 —
3.3 2.4 +
91 +
—
17.7 +
—
116.0 +
PA
—
91 =
—
44 =
—
340 —
215 79.7
—
21 +
—
167 —
217
—
114 =
—
49 =
—
250
—
4 -!
210 +!!
450
—
95 —
100
—
240 +
—
213 —
278 —
88
—
85 +
—
148 +
2.4 +
91 +
—
294 —
265 +
Zone 98
Designation
Position
Rating
Map
Roe 49
1646+3705
5E
4
Barton 341
1654+4355
5E
3
STF 2101
1646+3538
2M
4
A 1868
1653+4045
3M
3
A. G. 200
1601+3936
4M
2
Bur 815
1627+4255
4M
1
STF 2067
1633+3855
4M
4
OS 304
1601+3911
5M
2
h580
1603+3705
5M
2
h584
1618+3914
5M
2
Pulkovo 15
1623+3819
5M
2
Ali 864
1627+3801
5M
2
Espin 631
1635+4325
5M
3
h588
1658+3625
5M
4
OS 313
1633+4007
3D
3
Dembowski 15
1644+4329
4D
3
OS 317
1653+4424
4D
3
Component
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
Mag
9.13
11.00
10.22
10.40
7.33
9.52
9.88
10.13
10.62
10.94
8.69
10.93
12.20
9.47
10.41
6.74
10.57
9.18
12.20
10.11
11.50
10.75
11.20
10.71
12.90
8.60
11.80
9.88
12.40
8.01
8.35
9.15
9.32
8.10
12.99
9.19
Separation
—
11.4 +
—
4.0 +
—
4.1 —
2.1 +
—
3.2 —
17 +
68 =
—
2.8 +
—
10.7 +!
—
18.0
—
15.8 —
2.5 +
—
8.1
—
10.3 +
—
24.0
—
0.9 +
—
0.6 —
22.3 +
126.1 +
PA
—
93 —
259 —
49 —
303 —
216 +
—
331 68 =
—
297 —
173 —
15
—
232 —
31 —
61
—
163 +
—
100
—
132 —
112 —
204 126.1 +
Deep Space Objects
Object
NGC 6205
NGC 6058
NGC 6207
DolidzeDzimselejsvili 5
NGC 6166
Position
1642+3628
1604+4041
1643+3650
Rating
1E
3M
3M
Map
4
1
4
1627+3804
1629+3933
5M
5D
2
2
NGC 6239
1650+4244
5D
3
Type
Gc (5)
Pn (3)
Gal (SA(s)c III)
Oc (III 1 p)
Gal (E+2 pec)
Gal (SB(s)b pec?
III-IV)
- 31 -
Specifications
Surface
Mag
Br
5.7
12.0
12.3
12.8
11.0
11.8
13.1
12.4
13.2
Population
500,000
Zone 98
- 32 -