21102+3923 ALI 963

 
 
21h 10m 11.98s +39 23' 45.0" P.A. 291 sep 6.9 mag 12.40,12.60
 
 
Coord 2000
21102+3923
Discov num
ALI 963
Comp
Coord arcsec 2000
21 10 11.98 +39 23 45.0
Date first
1928
Date last
2015
Obs
7
Pa first
297
Pa last
291
P.A. Now (θ)
291°
Sep first
6.7
Sep last
6.9
Sep. Now (ρ)
6.9"
Mag pri
12.40
Mag sec
12.60
delta mag (ΔM)
0.2
Spectral class
Pri motion ra
+008
Sec motion ra
+002
Pri motion dec
-007
Sec motion dec
-013
Notes
rPM=0.645
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
291.3
Precise sep
6.897
Constellation
Cygnus
Gaia DR2
07431848064
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21102+3923 ALI 963 1998 2 291 6.9 12.40 12.60 D 211011.98+392345.0
21102+3923 ALI 963 2002 3 292 6.9 12.40 12.60 D 211011.98+392345.0
21102+3923 ALI 963 2015 4 291 6.9 12.40 12.60 211011.98+392345.0

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