20128+3916 SEI1013

 
 
20h 12m 49.41s +39 16' 14.6" P.A. 330 sep 20.6 mag 10.79,11.57 Sp F8
 
 
Coord 2000
20128+3916
Discov num
SEI1013
Comp
Coord arcsec 2000
20 12 49.41 +39 16 14.6
Date first
1892
Date last
2015
Obs
14
Pa first
330
Pa last
330
P.A. Now (θ)
330°
Sep first
19.7
Sep last
20.6
Sep. Now (ρ)
20.6"
Mag pri
10.79
Mag sec
11.57
delta mag (ΔM)
0.78
Spectral class
F8 (yellow-white)
Pri motion ra
+007
Sec motion ra
+004
Pri motion dec
+003
Sec motion dec
+008
Notes
rPM=0.652
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
330.3
Precise sep
20.558
Constellation
Cygnus
Tycho2
3151-00273-1
Gaia DR2
01935804800
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20128+3916 SEI1013 1999 7 330 20.5 10.79 11.57 D 201249.41+391614.6
20128+3916 SEI1013 2002 8 330 20.5 10.79 11.57 D 201249.41+391614.6
20128+3916 SEI1013 2010 9 330 20.7 10.79 11.57 F8 201249.41+391614.6
20128+3916 SEI1013 2015 10 330 20.6 10.79 11.57 F8 201249.41+391614.6

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