19520+3142 ES  355

 
 
19h 52m 00.21s +31 42' 26.2" P.A. 293 sep 13.3 mag 7.83,13.40 Sp B9IV
 
 
Coord 2000
19520+3142
Discov num
ES  355
Comp
Coord arcsec 2000
19 52 00.21 +31 42 26.2
Date first
1906
Date last
2010
Obs
4
Pa first
295
Pa last
293
P.A. Now (θ)
293°
Sep first
13.1
Sep last
13.3
Sep. Now (ρ)
13.3"
Mag pri
7.83
Mag sec
13.40
delta mag (ΔM)
5.57
Spectral class
B9IV (blue-white)
Pri motion ra
-001
Sec motion ra
Pri motion dec
-001
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
292.5
Precise sep
13.31
Constellation
Cygnus
last precise pa
292.5
last precise sep
13.31
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19520+3142 ES 355 1998 2 293 13.4 7.80 13.40 B9IV D 195200.21+314226.2
19520+3142 ES 355 2002 3 293 13.3 7.80 13.40 B9IV D 195200.21+314226.2
19520+3142 ES 355 2010 4 290 12.4 7.83 13.40 B9IV 195200.21+314226.2

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