20305+3540 SEI1142

 
 
20h 30m 28.65s +35 39' 54.4" P.A. 78 sep 21.7 mag 10.43,9.69
 
 
Coord 2000
20305+3540
Discov num
SEI1142
Comp
Coord arcsec 2000
20 30 28.65 +35 39 54.4
Date first
1896
Date last
2015
Obs
15
Pa first
77
Pa last
78
P.A. Now (θ)
78°
Sep first
22.2
Sep last
21.7
Sep. Now (ρ)
21.7"
Mag pri
10.43
Mag sec
9.69
delta mag (ΔM)
0.74
Spectral class
Pri motion ra
+002
Sec motion ra
+001
Pri motion dec
-004
Sec motion dec
-010
Notes
rPM=0.605
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
78.1
Precise sep
21.653
Constellation
Cygnus
Tycho2
2697-01376-1
Gaia DR2
05234000256
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20305+3540 SEI1142 2005 8 78 21.7 10.43 9.69 D 203028.65+353954.4
20305+3540 SEI1142 2010 10 78 21.5 10.43 9.69 203028.65+353954.4
20305+3540 SEI1142 2015 11 78 21.6 10.43 9.69 203028.65+353954.4

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