20217+5717 TDT2204

 
 
20h 21m 41.63s +57 17' 26.1" P.A. 306 sep 2.1 mag 11.75,11.85
 
 
Coord 2000
20217+5717
Discov num
TDT2204
Comp
Coord arcsec 2000
20 21 41.63 +57 17 26.1
Date first
1991
Date last
2015
Obs
2
Pa first
308
Pa last
306
P.A. Now (θ)
306°
Sep first
2.3
Sep last
2.1
Sep. Now (ρ)
2.1"
Mag pri
11.75
Mag sec
11.85
delta mag (ΔM)
0.1
Spectral class
Pri motion ra
-003
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
305.5
Precise sep
2.136
Constellation
Cygnus
Tycho2
3945-00202-1
Gaia DR2
09492327424
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20217+5717 TDT2204 1991 1 308 2.3 11.75 11.85 202141.74+571725.3
20217+5717 TDT2204 2015 2 306 2.1 11.75 11.85 202141.63+571726.1

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