18271-2930 B  2447

 
 
18h 27m 05.29s -29 30' 29.7" P.A. 222 sep 8.9 mag 8.09,14.00 Sp B9V dist. 203.25 pc (663 l.y.)
 
 
Coord 2000
18271-2930
Discov num
B  2447
Comp
Coord arcsec 2000
18 27 05.29 -29 30 29.7
Date first
1930
Date last
1999
Obs
4
Pa first
225
Pa last
222
P.A. Now (θ)
222°
Sep first
7.0
Sep last
8.9
Sep. Now (ρ)
8.9"
Mag pri
8.09
Mag sec
14.00
delta mag (ΔM)
5.91
Spectral class
B9V (blue-white)
Pri motion ra
+013
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
221.5
Precise sep
8.942
Constellation
Sagittarius
SAO
186825
HIP
90431
Tycho2
6869-00660-1
HD
169678
CD
CD-2914952
CP
CP-29 5557
Distance
203.25
Distance ly
663
last precise pa
221.5
last precise sep
8.942
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18271-2930 B 2447 1930 1 225 7.0 8.40 14.00 B9V 182705.29-293029.7
18271-2930 B 2447 1999 2 222 8.9 8.40 14.00 B9V 182705.29-293029.7

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