20564+4308 COU2544

 
 
20h 56m 24.09s +43 07' 46.5" P.A. 160 sep 0.3 mag 8.98,9.88 Sp B0III:
 
 
Coord 2000
20564+4308
Discov num
COU2544
Comp
Coord arcsec 2000
20 56 24.09 +43 07 46.5
Date first
1988
Date last
2009
Obs
6
Pa first
156
Pa last
160
P.A. Now (θ)
160°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.3"
Mag pri
8.98
Mag sec
9.88
delta mag (ΔM)
0.9
Spectral class
B0III: (blue-white)
Pri motion ra
+006
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
160.4
Precise sep
0.32
Constellation
Cygnus
last precise pa
160.4
last precise sep
0.32
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20564+4308 COU2544 1991 3 147 0.3 8.98 9.88 B0III: D 205624.09+430746.5
20564+4308 COU2544 2009 5 160 0.3 8.98 9.88 B0III: D 205624.09+430746.5

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