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 dist. 505.05 pc (1647.47 l.y.)
 
 
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
SAO
68987
HIP
97760
Tycho2
2669-00718-1
HD
188035
BD
BD+31 3814
Distance
505.05
Distance ly
1647.47
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

If you need more information about this double, apply for a data request form to the WDS.