19311+1817 OL   82

 
 
19h 30m 23.26s +18 15' 38.8" P.A. 246 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
3
Pa first
242
Pa last
246
P.A. Now (θ)
246°
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
245.5
Precise sep
1.424
Cdsa2 id
OL 82
Constellation
Sagitta
Ra deg
19.50646111111111
De deg
18.26077777777778
last precise pa
245.5
last precise sep
1.424
 
 
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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