19311+1817 OL   82

 
 
19h 30m 23.26s +18 15' 38.8" P.A. 245 sep 1.4 mag 9.80,11.70 Sp B0.5III
 
 
Coord 2000
19311+1817
Discov num
OL   82
Comp
Coord arcsec 2000
19 30 23.26 +18 15 38.8
Date first
1920
Date last
2015
Obs
4
Pa first
242
Pa last
245
P.A. Now (θ)
245°
Sep first
1.2
Sep last
1.4
Sep. Now (ρ)
1.4"
Mag pri
9.80
Mag sec
11.70
delta mag (ΔM)
1.9
Spectral class
B0.5III (blue-white)
Pri motion ra
+001
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
245.4
Precise sep
1.425
Constellation
Sagitta
Tycho2
1605-00180-1
Gaia DR2
4323127850373105536
HD
231616
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19311+1817 OL 82 1975 2 239 1.4 9.80 12.00 193160.00+181700.0
19311+1817 OL 82 2015 3 246 1.4 9.80 11.70 B0.5III 193023.26+181538.8

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