18136-3158 B  1353

 
 
18h 13m 37.34s -31 58' 02.3" P.A. 111 sep 0.1 mag 7.60,7.70 Sp B7II dist. 552.49 pc (1802.22 l.y.)
 
 
Coord 2000
18136-3158
Discov num
B  1353
Comp
Coord arcsec 2000
18 13 37.34 -31 58 02.3
Date first
1930
Date last
2014
Obs
7
Pa first
143
Pa last
111
P.A. Now (θ)
111°
Sep first
0.2
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
7.60
Mag sec
7.70
delta mag (ΔM)
0.1
Spectral class
B7II (blue-white)
Pri motion ra
+000
Sec motion ra
Pri motion dec
-010
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
111.1
Precise sep
0.116
Constellation
Sagittarius
SAO
209873
HIP
89330
Tycho2
7396-00136-1
HD
166790
CD
CD-3115265
CP
CP-31 5421
Distance
552.49
Distance ly
1802.22
last precise pa
111.1
last precise sep
0.116
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18136-3158 B 1353 1954 4 35 0.1 7.60 7.70 B7II 181337.34-315802.3
18136-3158 B 1353 2009 6 105 0.1 7.60 7.70 B7II 181337.34-315802.3
18136-3158 B 1353 2014 7 111 0.1 7.60 7.70 B7II 181337.34-315802.3

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