20212+4128 A   287

 
 
20h 21m 09.45s +41 27' 44.3" P.A. 131.00 sep 1.5 mag 9.82,11.36 Sp A2
 
 
Coord 2000
20212+4128
Discov num
A   287
Comp
Coord arcsec 2000
20 21 09.45 +41 27 44.3
Date first
1901
Date last
2010
Obs
10
Pa first
129
Pa last
131
P.A. Now (θ)
131°
Sep first
1.4
Sep last
1.5
Sep. Now (ρ)
1.5"
Mag pri
9.82
Mag sec
11.36
delta mag (ΔM)
1.54
Spectral class
A2 (white)
Pri motion ra
+008
Sec motion ra
+008
Pri motion dec
-004
Sec motion dec
-004
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
130.8
Precise sep
1.47
Constellation
Cygnus
SAO
49505
Tycho2
3160-00537-1
Gaia DR2
23045976320
HD
229062
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20212+4128 A 287 1997 9 130 1.5 9.82 11.36 A2 202109.45+412744.3
20212+4128 A 287 2010 10 131 1.5 9.82 11.36 A2 202109.45+412744.3

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