20121+4402 BRT2256

 
 
20h 12m 05.18s +44 01' 52.2" P.A. 27 sep 3.3 mag 11.20,12.40 Sp A
 
 
Coord 2000
20121+4402
Discov num
BRT2256
Comp
Coord arcsec 2000
20 12 05.18 +44 01 52.2
Date first
1892
Date last
2018
Obs
6
Pa first
28
Pa last
27
P.A. Now (θ)
27°
Sep first
3.2
Sep last
3.3
Sep. Now (ρ)
3.3"
Mag pri
11.20
Mag sec
12.40
delta mag (ΔM)
1.2
Spectral class
A (white)
Pri motion ra
-016
Sec motion ra
Pri motion dec
-030
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
26.8
Precise sep
3.272
Constellation
Cygnus
Tycho2
3163-00987-1
Gaia DR2
08816792704
HD
192242
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20121+4402 BRT2256 2006 3 25 3.3 9.20 9.70 A 201205.18+440152.2
20121+4402 BRT2256 2015 5 27 3.3 11.20 12.40 A 201205.18+440152.2
20121+4402 BRT2256 2018 6 27 3.3 11.20 12.40 A 201205.18+440152.2

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