21070+3839 ES 2059

 
 
21h 07m 02.12s +38 39' 31.7" P.A. 268 sep 6.8 mag 10.11,12.70 Sp B8II
 
 
Coord 2000
21070+3839
Discov num
ES 2059
Comp
Coord arcsec 2000
21 07 02.12 +38 39 31.7
Date first
1923
Date last
2016
Obs
10
Pa first
266
Pa last
268
P.A. Now (θ)
268°
Sep first
6.5
Sep last
6.8
Sep. Now (ρ)
6.8"
Mag pri
10.11
Mag sec
12.70
delta mag (ΔM)
2.59
Spectral class
B8II (blue-white)
Pri motion ra
+005
Sec motion ra
-004
Pri motion dec
-005
Sec motion dec
-005
Notes
rPM=1.273
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
268.1
Precise sep
6.844
Constellation
Cygnus
last precise pa
268.1
last precise sep
6.844
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21070+3839 ES 2059 1998 5 266 6.9 10.11 12.60 B8II D 210702.12+383931.7
21070+3839 ES 2059 2008 6 267 6.9 10.11 12.60 B8II D 210702.12+383931.7
21070+3839 ES 2059 2013 8 267 7.0 10.11 12.60 B8II 210702.12+383931.7
21070+3839 ES 2059 2016 10 268 6.8 10.11 12.60 B8II 210702.12+383931.7

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