20248+4223 ES 1678

 
 
20h 24m 46.63s +42 23' 05.3" P.A. 187 sep 6.6 mag 9.27,14.30 Sp B3Vn
 
 
Coord 2000
20248+4223
Discov num
ES 1678
Comp
Coord arcsec 2000
20 24 46.63 +42 23 05.3
Date first
1917
Date last
2015
Obs
8
Pa first
181
Pa last
187
P.A. Now (θ)
187°
Sep first
7.3
Sep last
6.6
Sep. Now (ρ)
6.6"
Mag pri
9.27
Mag sec
14.30
delta mag (ΔM)
5.03
Spectral class
B3Vn (blue-white)
Pri motion ra
-006
Sec motion ra
Pri motion dec
-006
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
187.2
Precise sep
6.576
Constellation
Cygnus
SAO
49589
Tycho2
3160-00616-1
Gaia DR2
31930396032
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20248+4223 ES 1678 1998 2 188 6.5 9.27 14.30 B3Vn D 202446.63+422305.3
20248+4223 ES 1678 2002 3 187 6.5 9.27 14.30 B3Vn D 202446.63+422305.3
20248+4223 ES 1678 2015 4 187 6.6 9.27 14.30 B3Vn 202446.63+422305.3

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