Zone 144, Master Map
Normal View
Zone Master, Normal View, 10 deg FOV
+24°00'
ω
c
+20°00'
+22°00'
e
Arcturus
η
f
d
+18°00'
α
ξ
+16°00'
ο
π1
π2
15h 04m
14h 56m
14h 48m
14h 40m
14h 32m
14h 24m
14h 16m
14h 08m
14h 00m
Zone 144, Map 1
Normal Image
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 5548
h2708
+24°00'
NGC 5610
STF 1828
+23°00'
Bur 1442
Roe 74
+22°00'
h2721
+21°00'
Hough 543
STF 1804
Jonckheere 1128
NGC 5513
STF 1825
14h 30m
14h 25m
14h 20m
14h 15m
14h 10m
14h 05m
14h 00m
Zone 144, Map 1
Mirror Image
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 5548
+24°00'
NGC 5610
STF 1828
h2708
+23°00'
Bur 1442
Roe 74
+22°00'
h2721
+21°00'
Hough 543
STF 1804
Jonckheere 1128
NGC 5513
STF 1825
STF 1794
14h 00m
14h 05m
14h 10m
14h 15m
14h 20m
14h 25m
14h 30m
Zone 144, Map 2
Normal Image
STF 1825
STF 1794
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
NGC 5492
Arcturus
+18°00'
Alpha Booα
+19°00'
STF 1797
+16°00'
+17°00'
NGC 5490
NGC 5522
14h 30m
14h 25m
14h 20m
14h 15m
14h 10m
14h 05m
14h 00m
Zone 144, Map 2
Mirror Image
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
STF 1825
STF 1794
STF 1794
NGC 5492
α
+19°00'
STF 1797
Arcturus
+18°00'
Alpha Boo
+16°00'
+17°00'
NGC 5490
NGC 5522
14h 00m
14h 05m
14h 10m
14h 15m
14h 20m
14h 25m
14h 30m
Zone 144, Map 3
Normal Image
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
OSS 129
+24°00'
STF 1884
h2747
+23°00'
Couteau 101
+21°00'
+22°00'
Kustner 105
Hough 389
15h 00m
14h 55m
14h 50m
STF 3088 rej
Couteau 186
14h 45m
14h 40m
NGC 5702
Hough 387
14h 35m
14h 30m
Zone 144, Map 3
Mirror Image
+25°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
OSS 129
+24°00'
STF 1884
h2747
+23°00'
Couteau 101
+21°00'
+22°00'
Kustner 105
Hough 387
14h 30m
14h 35m
NGC 5702
Hough 389
STF 3088 rej
Couteau 186
14h 40m
14h 45m
14h 50m
14h 55m
15h 00m
Zone 144, Map 4
Normal Image
Hough 389
STF 3088 rej
Couteau 186
LDS 968
Hough 387
STF 3087
+19°00'
ξ
+20°00'
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
Xi Boo
+18°00'
Bur 31
Kustner 106
+17°00'
STF 3086
ο
Pi 1 Boo
+16°00'
π1
π2
OS 288
Hussey 1153
Olivier 187
Heintz 66
STF 1862
15h 00m
14h 55m
14h 50m
14h 45m
14h 40m
14h 35m
14h 30m
Zone 144, Map 4
Mirror Image
Sky charts generated by TheSky Software; used by permission of Software Bisque Inc.
+20°00'
Hough 389
STF 3088 rej
Couteau 186
Hough 387
+19°00'
LDS 968
STF 3087
Xi Boo ξ
Kustner 106
+18°00'
Bur 31
+17°00'
STF 3086
ο
Pi 1 Boo
+16°00'
π1
π2
OS 288
Hussey 1153
Olivier 187
Heintz 66
STF 1862
14h 30m
14h 35m
14h 40m
14h 45m
14h 50m
14h 55m
15h 00m
Zone 144
1 Reference Star, 30 Double Stars, 6 Galaxies
A
N
Alpha Boo.............................................. 7
NGC 5490 ............................................ 10
NGC 5492 ............................................ 10
NGC 5513 .............................................. 6
NGC 5522 ............................................ 11
NGC 5610 .............................................. 7
NGC 5702 ............................................ 16
B
Bur 1442 ................................................ 2
Bur 31 .................................................. 21
C
O
Couteau 101......................................... 15
Couteau 186......................................... 14
Olivier 187 ........................................... 21
OS 288 ................................................. 20
OSS 129 ............................................... 12
H
h2708 ..................................................... 3
h2721 ..................................................... 4
h2747 ................................................... 13
Hough 387 ........................................... 14
Hough 389 ........................................... 15
Hough 543 ............................................. 3
Hussey 1153 ........................................ 20
P
Pi 1 Boo ............................................... 16
R
Roe 74 .................................................... 5
S
J
STF 1794................................................ 8
STF 1797................................................ 9
STF 1804................................................ 2
STF 1825................................................ 5
STF 1828................................................ 6
STF 1884.............................................. 13
STF 3086.............................................. 18
STF 3087.............................................. 19
Jonckheere 1128 .................................... 4
K
Kustner 105.......................................... 12
Kustner 106.......................................... 18
L
LDS 968............................................... 19
X
Xi Boo.................................................. 17
-1-
Zone 144
Zone 144, Map 1
Double Stars
Easy
STF 1804
Rating: 2 E
ADS 9118; HD 123613; SAO 83189
Position: 1408+2112
A
B
Magnitude
7.78
9.08
Separation PA
—
—
4.8 +
14 -
Year
—
1997
Spectra
F8
Colors
bW
dO!
Notes:
1829: 4.4 @ 18. 57 measurements. The stars have different proper motions.
Observations:
C8 at 104x. Nice color contrast. Webb: W, B.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 14.8 inches.
Separation: AB = 1.98 miles.
Distance (LY): 265
Total luminosity (Suns): 5
Bur 1442
G Struve 6 (E); SAO 83344
Position: 1426+2338
A
B
C
D
Magnitude
9.77
9.98
9.50
13.02
Separation
—
45.3 =
141 +!!
169 +!
Rating: 3 E
PA
—
74 =
113 259 +!
Notes:
AB 1881: 45.3 @ 74. 24 measurements.
AC 1880: 111 @ 124. 14 measurements.
AD 1903: 155 @ 245. 5 measurements.
-2-
Year
—
1991
1937
1930
Spectra
M0
M2
K7
Colors
Y
yW
W
?
Zone 144
Observations:
C11 at 115x. D was not easy.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 44.3 inches; B = 37.9 inches.
Separation: AB = 3.88 miles; AC = 12.1 miles; AD = 14.5 miles.
Distance (LY): 55
Total luminosity (Suns): 0.092
Hough 543
Rating: 3 E
ADS 9272
Position: 1428+2123
A
B
Magnitude
8.93
9.20
Separation PA
—
—
4.6 237 =
Year
—
1998
Spectra
F8
Colors
W
pO?
Notes:
1842: 5.5 @ 237. 32 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 15.8 inches.
Separation: AB = 2.13 miles.
Distance (LY): 298
Total luminosity (Suns): 3.31
h2708
Position: 1419+2406
A
B
Magnitude
10.67
10.79
Rating: 4 E
Separation PA
—
—
22.3 314 =
Year
—
1991
Spectra
F8
Notes:
1880: 23.4 @ 134. 8 measurements. There is a quadrant reversal in 1880.
Observations:
C11 at 115x.
-3-
Colors
W
W
Zone 144
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 17.3 inches.
Separation: AB = 1.07 miles.
Distance (LY): 31
Total luminosity (Suns): 0.008
h2721
Rating: 4 E
HD 126568; SAO 83346
Position: 1426+2217
A
B
Magnitude
9.06
10.31
Separation PA
—
—
110.8 +! 138 -
Year
—
1991
Spectra
G5
Colors
Y
O
Notes:
1893: 100.0 @ 140. 6 measurements.
May be optical because Hipparcos gives different distances (78 and 45 light years).
Observations:
C8 at 104x.
Jonckheere 1128
Rating: 5 E
ADS 9098
Position: 1404+2046
A
B
C
Magnitude
10.20
11.66
12.20
Separation
—
62.3
62.9
PA
—
192
192
Year
—
1915
1947
Notes:
AB and AC: 1 measurement.
Observations:
C11 at 115x. C was not detected.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 38.8 inches.
Separation: AB = 12.3 miles; AC = 12.5 miles.
Distance (LY): 127
Total luminosity (Suns): 0.147
-4-
Spectra
K5
Colors
O!
W?
No
Zone 144
Roe 74
Rating: 5 E
ADS 9184
Position: 1416+2258
A
B
Magnitude
10.18
10.80
Separation PA
—
—
6.0 288 +
Year
—
1991
Spectra
Colors
W
W
Notes:
1892: 7.2 @ 285. 5 measurements.
Observations:
C11 at 115x. I'd estimate it to be much fainter than listed-- more like 11.5, 11.8.
Moderate
STF 1825
Rating: 3 M
ADS 9192; HD 125040; SAO 83259
Position: 1417+2007
A
B
Magnitude
6.25
8.39
Separation PA
—
—
4.4 +
156 -
Year
—
1998
Spectra
F8 V
Colors
Y
Y
Notes:
1830: 3.5 @ 186. Over 100 measurements. The stars share common proper motion.
Observations:
C8 at 206x. Webb: W, O. Franks: pR.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 3.60hes.
Separation: AB = 3,802 feet.
Distance (LY): 105
Total luminosity (Suns): 3.1
-5-
Zone 144
Difficult
STF 1828
Rating: 5 D
ADS 9202
Position: 1417+2412
A
B
Magnitude
10.40
10.75
Separation PA
—
—
2.0 +
159 -
Year
—
1999
Spectra
F2
Colors
W
W
Notes:
1833: 1.9 @ 160. 29 measurements.
Observations:
C11 at 560x. Nice separation.
Deep Sky Objects
Difficult
NGC 5513
Other Names: UGC 9099; H II 877
Rating: 5 D
Position: 1413+2025
Type: Gal
Surface brightness: 13.3
Class: S0
Dimensions: 1.9' x 1.1'
Magnitude: 12.6
PA: 115
Observations:
C11 at 98x. Nondescript glow that very gradually brightens toward the middle. No
details otherwise.
Radial velocity (k/s): +4,993
-6-
Zone 144
NGC 5610
Other Names: UGC 9230; H III 136
Rating: 5 D
Position: 1424+2437
Type: Gal
Surface brightness: 13.4
Class: SB(s)ab
Dimensions: 2' x 0.7'
Magnitude: 13.2
PA: 108
Observations:
C11 at 193x. Very faint and uniform ellipse with no nucleus.
Radial velocity (k/s): +5,063
Zone 144, Map 2
Reference Star
Alpha Boo (Arcturus, one of the ancient names for the constellation; 16 Boo; HD
124897; SAO 100944)
Position: 1416+1911
Mag : -0.05
Spectrum : K2pIII Color : O
Assumed distance: 37 light years
Assumed luminosity (suns): 180
Notes:
This star is 25 times bigger than the Sun. It is a Population II star (a galactic halo
star) with a surface temperature of 4,200 K. It is 4 times as massive as the Sun (and thus
has a density only 0.0003 that of the Sun). It is also an infra-red source.
It is moving at 90 miles/sec toward Virgo and is presently at its closest approach to
the Sun. Its orbit takes it through the galactic plane at regular intervals. It also has high
space velocity.
It was also the first star observed in daylight (Morin, 1635).
Its diameter has been measured as 0.019" to 0.027".
Here’s a fascinating bit of trivia for your next star party: the heat of Arcturus has
actually been measured on earth! It amounts to the heat felt by a candle 5 miles away.
-7-
Zone 144
From James Kaler's Star Notes:
Arcturus, the "Bear Watcher," follows Ursa Major, the Great Bear, around the pole,
"arktos" being the Greek name for "bear," from which our word "arctic" is derived by
reference with the constellation of the Great Bear.
Arcturus is located at a distance of 37 light years, and became famous when its light
was used to open the 1933 world's fair in Chicago, as that light had left the star at about
the time of the previous Chicago fair in 1893.
It is a classic orange giant star with a precisely defined surface temperature of 4,290
degrees Kelvin. Taking infrared radiation into account, it shines 180 times more brightly
than our Sun, from which we find a diameter 24.5 times solar, about a quarter the size of
Mercury's orbit. Arcturus is close and large enough so that its angular diameter of 0.0191
seconds of arc can easily be measured, leading to a direct determination of 23 times the
solar dimension and providing nice confirmation of stellar parameters. Arcturus has a
velocity somewhat higher than other bright stars, and comes from a somewhat older
population of the Galaxy. Consistently, it is somewhat deficient in metals, having only
about 20 percent as much iron relative to hydrogen as found in the Sun. As a giant,
weighing in at around 1.5 times the mass of the Sun, it has ceased the fusion of hydrogen
in its core. Though it is somewhat brighter than we would expect for a stable helium
fusing star, helium fusion to carbon has probably already begun.
Double Stars
Easy
STF 1794
Rating: 4 D
ADS 9078
Position: 1400+1953
A
B
Magnitude
9.57
9.01
Separation PA
—
—
1.8 127 -
Notes:
1830: 2.1 @ 130. 39 measurements.
Observations:
C11 at 560x. Fair split in bad seeing (6 of 10).
-8-
Year
—
1998
Spectra
F8
Colors
W
W
Zone 144
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.4 inches.
Separation: AB = 1.17 miles.
Distance (LY): 420
Total luminosity (Suns): 7.7
STF 1797
Rating: 3 E
HD 122504; SAO 100821
Position: 1402+1926
A
B
Magnitude
9.52
9.86
Separation PA
—
—
20.9 158 -
Year
—
1991
Spectra
K0
K0
Colors
Y
O
Notes:
1828: 21.1 @ 160. 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 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.5 inches; B = 27.0 inches.
Separation: AB = 9.52 miles.
Distance (LY): 292
Total luminosity (Suns): 1.8
-9-
Zone 144
Deep Sky Objects
Moderate
NGC 5492
Other Names: UGC 9065; H II 876
Rating: 4 M
Position: 1411+1937
Type: Gal
Surface brightness: 13.2
Class: SB/p
Dimensions: 2.4' x 0.7'
Magnitude: 12.8
PA: 150
Observations:
C11 at 140x. A ghostly streak some 8 min SW of a 10m star. It very gradually
brightens towards the center.
Radial velocity (km/sec): +2,271
Difficult
NGC 5490
Other Names: NGC 5490A; H III 32
Rating: 5 D
Position: 1410+1733
Type: Gal
Surface brightness: 13.5
Class: E2
Dimensions: 2.3' x 1.8'
Magnitude: 12.1
Observations:
C11 at 140x. It is small and round, and only slowly brightens to the middle. A 10m
star lies about 8 min NNE.
Model (where the Sun is a baseball):
Its diameter would be 50 million miles.
Distance (LY): 230,000,000
Radial velocity (km/sec): +4,855
Luminosity (suns): 60,000,000,000
Sketch, next page.
- 10 -
Zone 144
NGC 5490
Galaxy (E2)
Observed with C11 on 7/4/03; s8, t8
Magnification: 140x
NGC 5522
Other Names: UGC 9116; H III 644
Rating: 5 D
Position: 1415+1509
Type: Gal
Surface brightness: 13.0
Type: Sb
Dimensions: 1.8' x 0.4'
Magnitude: 13.5
PA: 50
Observations:
C11 at 140x. Extremely faint oval without an obvious nucleus or halo. It lies 2 min E
of an 11m star.
Radial velocity (km/sec): +4,573
- 11 -
Zone 144
Zone 144, Map 3
Double Stars
Easy
OSS 129
Rating: 3 E
HD 128078; SAO 83411
Position: 1435+2424
A
B
Magnitude
8.42
8.44
Separation PA
—
—
77.6 68 =
Year
—
1993
Spectra
A1 V
G0
Colors
W
bW
Notes:
1874: 78.7 @ 68. 25 measurements.
The stars share a small common proper motion. However, Hipparcos shows different
distances (930 and 469 light years).
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 8.70 inches; B = 17.4 inches.
Separation: AB = 113 miles.
Distance (LY): 930
Total luminosity (Suns): 60
Kustner 105
Position: 1456+2246
A
B
Magnitude
11.29
10.90
Rating: 4 E
Separation PA
—
—
38.7 149 +
Notes:
1892: 39.1 @ 148. 4 measurements.
- 12 -
Year
—
1902
Spectra
K0
Colors
yO
W
Zone 144
Observations:
C11 at 115x.
h2747
Position: 1449+2404
A
B
Magnitude
11.39
13.00
Rating: 5 E
Separation PA
—
—
12.8 47 =
Year
—
1914
Spectra
Colors
W
W?
Notes:
1892: 13.1 @ 47. 5 measurements.
Observations:
C11 at 115x.
Moderate
STF 1884
Rating: 3 M
ADS 9389; HD 130603; SAO 83535
Position: 1448+2422
A
B
Magnitude
6.60
7.57
Separation PA
—
—
2.2 +
56 +
Year
—
1997
Spectra
F2 V
Colors
W
L
Notes:
1829: 1.2 @ 52. Over 100 measurements. The stars share common proper motion.
Observations:
C8 at 280x. Webb saw them as Y, B. Dembowski saw W and brown (!?).
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.10 inches.
Separation: AB = 4,752 feet.
Distance (LY): 264
Total luminosity (Suns): 22.8
- 13 -
Zone 144
Hough 387
Rating: 5 M
ADS 9305; SAO 83396
Position: 1433+2009
A
B
Magnitude
9.63
12.40
Separation PA
—
—
9.4 +
242 +
Year
—
1991
Spectra
G0
Colors
Y
R?
Notes:
1892: 9.2 @ 241. 10 measurements.
Observations:
C11 at 115x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 18.5 inches.
Separation: AB = 6.73 miles.
Distance (LY): 459
Total luminosity (Suns): 2.50
Difficult
Couteau 186
STF 3088 rej (C)
Position: 1443+2014
A
B
C
Magnitude
10.13
12.50
11.99
Rating: 4 D
Separation
—
3.2 +
22.8
PA
—
253 296
Year
—
1997
1967
Notes:
AB 1967: 2.7 @ 255. 2 measurements.
AC 1 measurement.
Observations:
C8 at 104x.
C11 at 193x.
Distance (LY): 190
Total luminosity (Suns): 0.324
- 14 -
Spectra
Colors
W
?
W
Zone 144
Hough 389
Rating: 5 D
ADS 9420; HD 131265; SAO 83560
Position: 1452+2017
A
B
Magnitude
6.91
9.30
Separation PA
—
—
1.3 +
85 -
Year
—
1995
Spectra
A0
Colors
W
W
Notes:
1892: 1.1 @ 101. 33 measurements.
Observations:
C8 at 697x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 5.69 inches.
Separation: AB = 3,802 feet.
Distance (LY): 358
Total luminosity (Suns): 20
Couteau 101
Rating: 5 D
SAO 83571
Position: 1454+2321
A
B
Magnitude
8.65
13.14
Separation PA
—
—
27.8
47
Year
—
1966
Notes:
1 measurement.
Observations:
C8 at 104x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 13.6 inches.
Separation: AB = 3.25 miles.
Distance (LY): 75
Total luminosity (Suns): 0.142
- 15 -
Spectra
K3 V
Colors
Y
?
Zone 144
Deep Sky Objects
Difficult
NGC 5702
Other Names: UGC 9434; H III 894
Rating: 5 D
Position: 1439+2030
Type: Gal
Surface brightness: 13.1
Class: S0
Dimensions: 66" x 48"
Magnitude: 13.3
PA: 150
Observations:
C11 at 98x. Very faint smudge without a brighter middle. Confirmed with tube
movement.
Radial velocity (k/s): +5,412
Zone 144, Map 4
Double Stars
Easy
Pi 1 Boo
29 Boo; STF 1864; ADS 9338; HD 129175; SAO 101139
Position: 1441+1625
A
B
C
Magnitude
4.49
5.55
10.63
Separation
—
5.6 128.0 +
PA
—
109 +
163 +
Year
—
1998
1995
Rating: 1 E
Spectra
B9p
A5 V
Colors
D
W
W?
Notes:
AB 1822 = 6.3 @ 101. Over 100 measurements. The stars have different proper
motions.
- 16 -
Zone 144
AC 1881: 126.8 @ 160. 10 measurements.
Stars A and B are spectroscopic binaries.
Observations:
C8 at 206x. Very nice!
Scale model (in which the Sun is the
size of a baseball):
Diameter: A = 3.76 inches; B = 6.77
inches.
Separation: AB = 2.77 miles; AC =
63.3 miles.
A
B
C
Distance (LY): 317
Total luminosity (Suns): 134
Pi 1 Boo (Σ1864)
Observed with C8 on 8/10/99; s7, t7
Magnification: 104x
Xi Boo
37 Boo; STF 1888; ADS 9413; HD 131156
Position: 1451+1906
A
B
C
D
Magnitude
4.54
6.81
12.60
9.60
Separation
—
6.6 66.8 +
149.3 +!!
Rating: 2 E
PA
—
318 348 286 +
Year
—
1999
1953
1953
Spectra
G8 V
K5 V
Colors
Y
R
W?
W
Notes:
AB 1822: 7.5 @ 336. Over 100 measurements. The period is 151.5 years with a
semi-major axis of 4.90" and retrograde motion.
AC 1900 = 59.0 @ 354. 7 measurements.
AD 1900: 75.3 @ 283. 5 measurements.
Observations:
C8 at 104x. C was difficult. Three stars to the E form a nice N-S wall.
- 17 -
Zone 144
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 2.85 inches; B = 31.7 inches.
Separation: AB = 862 feet; AC = 2.29 miles.
Distance (LY): 22
Total luminosity (Suns): 0.6553
STF 3086
Rating: 4 E
ADS 9298
Position: 1432+1718
A
B
Magnitude
10.06
10.83
Separation PA
—
—
6.0 +
271 =
Year
—
1991
Spectra
F8
G5
Colors
W
W
Notes:
1830: 5.9 @ 271. 17 measurements.
Observations:
C11 at 115x. This pair is one vertex of a small 10m triangle.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 16.8 inches; B = 22.6 inches.
Separation: AB = 4,435 feet.
Distance (LY): 90
Total luminosity (Suns): 0.088
Kustner 106
Position: 1457+1758
A
B
Magnitude
9.61
10.39
Rating: 4 E
Separation PA
—
—
57.9 240 -
Notes:
1897: 59.2 @ 241. 7 measurements.
Observations:
C11 at 115x.
- 18 -
Year
—
1981
Spectra
K0
Colors
Y
?
Zone 144
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 26.6 inches.
Separation: AB = 17.3 miles.
Distance (LY): 191
Total luminosity (Suns): 0.608
LDS 968
Hussey 575 (B); ADS 9352
Position: 1443+1929
A
B
C
Magnitude
9.10
9.38
10.08
Separation
—
0.7 =
121.7 -!
Rating: 5 E
PA
—
190 +
309 =
Year
—
1999
1996
Spectra
M0
Colors
Y
No
W
Notes:
AB 1902: 0.7 @ 171. Over 100 measurements. Orbit calculated. Period is 52 years;
semi-major axis is 0.63"; motion retrograde.
AC 1936: 135.0 @ 309. 3 measurements. This system may be optical as Hipparcos
shows different distances for A and C (73 and 84 light years).
Observations:
C11 at 115x. B was not detected.
Moderate
STF 3087
Rating: 4 M
ADS 9321; SAO 101100
Position: 1436+1924
A
B
Magnitude
10.72
9.85
Separation PA
—
—
2.5 +
41 -
Notes:
1833: 1.7 @ 49. 22 measurements.
Observations:
C11 at 339x.
- 19 -
Year
—
1995
Spectra
G0
Colors
W
W
Zone 144
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 19.6 inches.
Separation: AB = 2.34 miles.
Distance (LY): 600
Total luminosity (Suns): 6.47
Hussey 1153
Rating: 5 M
ADS 9414; HD 131177; SAO 101254
Position: 1452+1519
A
B
Magnitude
8.39
10.96
Separation PA
—
—
3.4 291 +
Year
—
1991
Spectra
K0
Colors
O
W
Notes:
1905: 4.4 @ 281. 12 measurements.
Observations:
C11 at 339x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 24.9 inches.
Separation: AB = 4,171 feet.
Distance (LY): 149
Total luminosity (Suns): 0.836
Difficult
OS 288
Rating: 2 D
ADS 9425; HD 131473; SAO 101273
Position: 1453+1542
A
B
Magnitude
6.41
7.61
Separation PA
—
—
1.2 +
167 -
Year
—
1999
Spectra
F6 V
F9 I
Colors
W
L
Notes:
1843: 0.3 @ 224. Over 100 measurements.
Orbital period of 210 years, with semi-major axis of 0.96", motion retrograde.
- 20 -
Zone 144
Observations:
C8 at 697x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 4.20 inches; B = 15.5 inches.
Separation: AB = 1,531 feet.
Distance (LY): 160
Total luminosity (Suns): 7.5
Bur 31
Rating: 5 D
ADS 9423; HD 131334; SAO 101264
Position: 1453+1844
A
B
C
D
Magnitude
8.27
10.41
12.00
12.04
Separation
—
2.2 +
8.1 93.5 -
PA
—
217 +
169 +
274 -
Year
—
1997
1987
1924
Spectra
K0 V
Colors
O
?
?
?
Notes:
AB 1874: 1.1 @ 182. 77 measurements.
AC 1878: 9.0 @ 161. 15 measurements.
AD 1897: 96.3 @ 278. 7 measurements.
Observations:
C8 at 280x.
Scale model (in which the Sun is the size of a baseball):
Diameter: A = 2.40 inches.
Separation: AB = 3,010 feet; AC = 2.12 miles; AD = 24.5 miles.
Distance (LY): 168
Total luminosity (Suns): 1.535
Olivier 187
Position: 1458+1508
A
B
Magnitude
10.55
10.70
Rating: 5 D
Separation PA
—
—
1.7 81 +
- 21 -
Year
—
1999
Spectra
A2
Colors
W
W
Zone 144
Notes:
1942: 1.9 @ 78. 5 measurements.
Observations:
C11 at 634x.
- 22 -
Zone 144
Zone 144 Mini-Catalog
Double Stars
Designation
Position
Rating
Map
Pi 1 Boo
1441+1625
1E
4
STF 1804
1408+2112
2E
1
Xi Boo
1451+1906
2E
4
STF 1797
1402+1926
3E
2
Bur 1442
1426+2338
3E
1
Hough 543
1428+2123
3E
1
OSS 129
1435+2424
3E
3
h2708
1419+2406
4E
1
h2721
1426+2217
4E
1
STF 3086
1432+1718
4E
4
Kustner 105
1456+2246
4E
3
Kustner 106
1457+1758
4E
4
Jonckheere
1128
1404+2046
5E
1
Roe 74
1416+2258
5E
1
LDS 968
1443+1929
5E
4
h2747
1449+2404
5E
3
STF 1825
1417+2007
3M
1
STF 1884
1448+2422
3M
3
STF 3087
1436+1924
4M
4
Hough 387
1433+2009
5M
3
Component
A
B
C
A
B
A
B
C
D
A
B
A
B
C
D
A
B
A
B
A
B
A
B
A
B
A
B
A
B
A
B
C
A
B
A
B
C
A
B
A
B
A
B
A
B
A
B
- 23 -
Mag
4.49
5.55
10.63
7.78
9.08
4.54
6.81
12.60
9.60
9.52
9.86
9.77
9.98
9.50
13.02
8.93
9.20
8.42
8.44
10.67
10.79
9.06
10.31
10.06
10.83
11.29
10.90
9.61
10.39
10.20
11.66
12.20
10.18
10.80
9.10
9.38
10.08
11.39
13.00
6.25
8.39
6.60
7.57
10.72
9.85
9.63
12.40
Separation
—
5.6 128.0 +
—
4.8 +
—
6.6 66.8 +
149.3 +!!
—
20.9 —
45.3 =
141 +!!
169 +!
—
4.6 —
77.6 —
22.3 —
110.8 +!
—
6.0 +
—
38.7 —
57.9 —
62.3
62.9
—
6.0 —
0.7 =
121.7 -!
—
12.8 —
4.4 +
—
2.2 +
—
2.5 +
—
9.4 +
PA
—
109 +
128.0 +
—
14 —
318 66.8 +
149.3 +!!
—
158 —
74 =
141 +!!
169 +!
—
237 =
—
68 =
—
314 =
—
138 —
271 =
—
149 +
—
240 —
192
62.9
—
288 +
—
190 +
121.7 -!
—
47 =
—
156 —
56 +
—
41 —
242 +
Zone 144
Designation
Position
Rating
Map
Hussey 1153
1452+1519
5M
4
OS 288
1453+1542
2D
4
STF 1794
1400+1953
4D
2
Couteau 186
1443+2014
4D
3
STF 1828
1417+2412
5D
1
Hough 389
1452+2017
5D
3
Bur 31
1453+1844
5D
4
Couteau 101
1454+2321
5D
3
Olivier 187
1458+1508
5D
4
Component
A
B
A
B
A
B
A
B
C
A
B
A
B
A
B
C
D
A
B
A
B
Mag
8.39
10.96
6.41
7.61
9.57
9.01
10.13
12.50
11.99
10.40
10.75
6.91
9.30
8.27
10.41
12.00
12.04
8.65
13.14
10.55
10.70
Separation
—
3.4 —
1.2 +
—
1.8 —
3.2 +
22.8
—
2.0 +
—
1.3 +
—
2.2 +
8.1 93.5 —
27.8
—
1.7 -
PA
—
291 +
—
167 —
127 —
253 22.8
—
159 —
85 —
217 +
8.1 93.5 —
47
—
81 +
Deep Sky Objects
Object
NGC 5492
NGC 5490
NGC 5513
NGC 5522
NGC 5610
NGC 5702
Position
1411+1937
1410+1733
1413+2025
1415+1509
1424+2437
1439+2030
Rating
4M
5D
5D
5D
5D
5D
Map
2
2
1
2
1
3
Type
Gal (SB/p)
Gal (E2)
Gal (S0)
Gal
Gal (SBab)
Gal (S0)
- 24 -
Specifications
Surface
Mag
Br
12.8
13.2
12.1
13.5
12.6
13.3
13.5
13.0
13.2
13.4
13.3
13.1
Population