18039-2250 B  2430

 
 
18h 03m 55.89s -22 50' 14.8" P.A. 7 sep 8.8 mag 7.12,12.40 Sp B0III
 
 
Coord 2000
18039-2250
Discov num
B  2430
Comp
Coord arcsec 2000
18 03 55.89 -22 50 14.8
Date first
1929
Date last
2010
Obs
3
Pa first
5
Pa last
7
P.A. Now (θ)
Sep first
8.0
Sep last
8.8
Sep. Now (ρ)
8.8"
Mag pri
7.12
Mag sec
12.40
delta mag (ΔM)
5.28
Spectral class
B0III (blue-white)
Pri motion ra
+005
Sec motion ra
Pri motion dec
-002
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
7.1
Precise sep
8.84
Constellation
Sagittarius
SAO
186208
Tycho2
6842-00878-1
HD
164833
last precise pa
7.1
last precise sep
8.84
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18039-2250 B 2430 1999 2 6 8.7 7.12 12.40 D 180355.89-225014.8
18039-2250 B 2430 2010 3 6 8.9 7.12 12.40 B0III 180355.89-225014.8

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