18374-2337 B  2456

 
 
18h 37m 23.72s -23 36' 49.5" P.A. 225 sep 7.9 mag 9.52,14.70 Sp B7II
 
 
Coord 2000
18374-2337
Discov num
B  2456
Comp
Coord arcsec 2000
18 37 23.72 -23 36 49.5
Date first
1930
Date last
1999
Obs
3
Pa first
225
Pa last
225
P.A. Now (θ)
225°
Sep first
6.0
Sep last
7.9
Sep. Now (ρ)
7.9"
Mag pri
9.52
Mag sec
14.70
delta mag (ΔM)
5.18
Spectral class
B7II (blue-white)
Pri motion ra
+004
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
224.9
Precise sep
7.872
Constellation
Sagittarius
SAO
187059
Tycho2
6858-02403-1
HD
171737
last precise pa
224.9
last precise sep
7.872
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18374-2337 B 2456 1930 1 225 6.0 9.52 14.70 B7II 183723.72-233649.5
18374-2337 B 2456 1999 2 225 7.9 9.52 14.70 B7II 183723.72-233649.5
18374-2337 B 2456 2010 4 226 7.8 9.52 14.70 B7II 183723.72-233649.5

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