21108+3818 ALI 682

 
 
21h 10m 47.29s +38 17' 52.5" P.A. 129 sep 8.9 mag 12.10,12.20
 
 
Coord 2000
21108+3818
Discov num
ALI 682
Comp
Coord arcsec 2000
21 10 47.29 +38 17 52.5
Date first
1929
Date last
2015
Obs
8
Pa first
108
Pa last
129
P.A. Now (θ)
129°
Sep first
11.7
Sep last
8.9
Sep. Now (ρ)
8.9"
Mag pri
12.10
Mag sec
12.20
delta mag (ΔM)
0.1
Spectral class
Pri motion ra
+026
Sec motion ra
-016
Pri motion dec
+002
Sec motion dec
-019
Notes
rPM=1.801
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
128.8
Precise sep
8.876
Constellation
Cygnus
SAO
71024
Gaia DR2
57871814016
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21108+3818 ALI 682 1929 1 108 11.7 12.10 12.20 211047.29+381752.5
21108+3818 ALI 682 2002 2 126 9.1 12.10 12.20 211047.29+381752.5
21108+3818 ALI 682 2012 3 127 9.0 12.10 12.20 211047.29+381752.5
21108+3818 ALI 682 2015 5 129 8.9 12.10 12.20 211047.29+381752.5

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