20091+3657 SEI 921

 
 
20h 09m 06.42s +36 55' 52.7" P.A. 336 sep 25.7 mag 10.73,13.16 Sp M7
 
 
Coord 2000
20091+3657
Discov num
SEI 921
Comp
Coord arcsec 2000
20 09 06.42 +36 55 52.7
Date first
1896
Date last
2016
Obs
8
Pa first
338
Pa last
336
P.A. Now (θ)
336°
Sep first
25.5
Sep last
25.7
Sep. Now (ρ)
25.7"
Mag pri
10.73
Mag sec
13.16
delta mag (ΔM)
2.43
Spectral class
M7 (red)
Pri motion ra
-000
Sec motion ra
-002
Pri motion dec
-007
Sec motion dec
-006
Notes
rPM=0.319
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
336.1
Precise sep
25.7
Constellation
Cygnus
Tycho2
2683-01269-1
Gaia DR2
73339472896
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20091+3657 SEI 921 1896 1 158 25.5 11.00 11.00 200905.56+365617.3
20091+3657 SEI 921 2002 2 156 25.8 11.00 11.00 200905.56+365617.3
20091+3657 SEI 921 2016 3 336 25.7 10.73 13.16 M7 200906.42+365552.7

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