21071+3905 ALI 960

 
 
21h 07m 04.66s +39 05' 15.4" P.A. 110 sep 12.9 mag 12.60,12.60
 
 
Coord 2000
21071+3905
Discov num
ALI 960
Comp
Coord arcsec 2000
21 07 04.66 +39 05 15.4
Date first
1928
Date last
2015
Obs
5
Pa first
111
Pa last
110
P.A. Now (θ)
110°
Sep first
12.8
Sep last
12.9
Sep. Now (ρ)
12.9"
Mag pri
12.60
Mag sec
12.60
delta mag (ΔM)
0
Spectral class
Pri motion ra
-001
Sec motion ra
+001
Pri motion dec
-003
Sec motion dec
-002
Notes
rPM=0.707
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
109.6
Precise sep
12.882
Constellation
Cygnus
Gaia DR2
1872266026322781056
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21071+3905 ALI 960 1998 2 110 12.8 12.60 12.60 D 210704.66+390515.4
21071+3905 ALI 960 2002 3 110 12.8 12.60 12.60 D 210704.66+390515.4
21071+3905 ALI 960 2010 4 110 12.7 12.60 12.60 210704.66+390515.4
21071+3905 ALI 960 2015 5 110 12.9 12.60 12.60 210704.66+390515.4

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