19399+3001 SLE 661

 
 
19h 39m 51.78s +30 00' 34.0" P.A. 158 sep 10.9 mag 9.58,13.50 Sp B9
 
 
Coord 2000
19399+3001
Discov num
SLE 661
Comp
Coord arcsec 2000
19 39 51.78 +30 00 34.0
Date first
1984
Date last
2002
Obs
3
Pa first
159
Pa last
158
P.A. Now (θ)
158°
Sep first
10.9
Sep last
10.9
Sep. Now (ρ)
10.9"
Mag pri
9.58
Mag sec
13.50
delta mag (ΔM)
3.92
Spectral class
B9 (blue-white)
Pri motion ra
-001
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
157.7
Precise sep
10.916
Constellation
Cygnus
last precise pa
157.7
last precise sep
10.916
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19399+3001 SLE 661 1998 2 158 10.9 9.58 10.80 D 193951.78+300034.0
19399+3001 SLE 661 2002 3 158 10.9 9.58 13.50 D 193951.78+300034.0

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