20559+4345 COU2543

 
 
20h 55m 54.90s +43 44' 26.9" P.A. 222 sep 1.6 mag 10.85,11.16 Sp B9
 
 
Coord 2000
20559+4345
Discov num
COU2543
Comp
Coord arcsec 2000
20 55 54.90 +43 44 26.9
Date first
1988
Date last
2005
Obs
4
Pa first
225
Pa last
222
P.A. Now (θ)
222°
Sep first
1.5
Sep last
1.6
Sep. Now (ρ)
1.6"
Mag pri
10.85
Mag sec
11.16
delta mag (ΔM)
0.31
Spectral class
B9 (blue-white)
Pri motion ra
+004
Sec motion ra
+004
Pri motion dec
-003
Sec motion dec
-003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
221.9
Precise sep
1.59
Constellation
Cygnus
Tycho2
3179-01200-1
last precise pa
221.9
last precise sep
1.59
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20559+4345 COU2543 2005 4 222 1.6 10.85 11.16 B9 205554.90+434426.9

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