18281-2048 RSS  32

 
 
18h 28m 08.47s -20 48' 06.8" P.A. 223 sep 45.6 mag 8.94,9.85 Sp B9II dist. 291.55 pc (951.04 l.y.)
 
 
Coord 2000
18281-2048
Discov num
RSS  32
Comp
Coord arcsec 2000
18 28 08.47 -20 48 06.8
Date first
1894
Date last
2010
Obs
11
Pa first
224
Pa last
223
P.A. Now (θ)
223°
Sep first
45.4
Sep last
45.6
Sep. Now (ρ)
45.6"
Mag pri
8.94
Mag sec
9.85
delta mag (ΔM)
0.91
Spectral class
B9II (blue-white)
Pri motion ra
-003
Sec motion ra
-001
Pri motion dec
-007
Sec motion dec
-003
Notes
N (See Notes)
rPM=0.587
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
223.3
Precise sep
45.59
Constellation
Sagittarius
HIP
90515
Tycho2
6278-01671-1
HD
170015
BD
BD-20 5147
Distance
291.55
Distance ly
951.04
last precise pa
223.3
last precise sep
45.59
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18281-2048 RSS 32 1998 9 223 45.8 8.94 9.85 B9II N D 182808.47-204806.8
18281-2048 RSS 32 1999 11 223 45.7 8.94 9.85 B9II N D 182808.47-204806.8
18281-2048 RSS 32 2010 11 223 45.7 8.94 9.85 B9II N 182808.47-204806.8

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