20122+3600 SEI 991

 
 
20h 12m 06.39s +35 59' 36.5" P.A. 296 sep 20.1 mag 11.68,12.50
 
 
Coord 2000
20122+3600
Discov num
SEI 991
Comp
Coord arcsec 2000
20 12 06.39 +35 59 36.5
Date first
1896
Date last
2015
Obs
11
Pa first
297
Pa last
296
P.A. Now (θ)
296°
Sep first
20.6
Sep last
20.1
Sep. Now (ρ)
20.1"
Mag pri
11.68
Mag sec
12.50
delta mag (ΔM)
0.82
Spectral class
Pri motion ra
-002
Sec motion ra
-002
Pri motion dec
-008
Sec motion dec
-008
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
296
Precise sep
20.101
Constellation
Cygnus
Tycho2
2683-01860-1
Gaia DR2
95811769856
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20122+3600 SEI 991 1998 5 296 20.2 11.68 12.50 D 201206.39+355936.5
20122+3600 SEI 991 2002 6 296 20.1 11.68 12.50 D 201206.39+355936.5
20122+3600 SEI 991 2010 7 294 19.8 11.68 12.50 201206.39+355936.5
20122+3600 SEI 991 2015 7 296 20.1 11.68 12.50 201206.39+355936.5

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