20257+3709 ES 2192

 
 
20h 25m 37.64s +37 07' 48.4" P.A. 79.00 sep 2.8 mag 9.70,12.00 Sp B
 
 
Coord 2000
20257+3709
Discov num
ES 2192
Comp
Coord arcsec 2000
20 25 37.64 +37 07 48.4
Date first
1925
Date last
2006
Obs
4
Pa first
84
Pa last
79
P.A. Now (θ)
79°
Sep first
2.6
Sep last
2.8
Sep. Now (ρ)
2.8"
Mag pri
9.70
Mag sec
12.00
delta mag (ΔM)
2.3
Spectral class
B (blue-white)
Pri motion ra
-009
Sec motion ra
Pri motion dec
-012
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
79.1
Precise sep
2.83
Constellation
Cygnus
SAO
70002
Tycho2
2697-00907-1
Gaia DR2
24985697664
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20257+3709 ES 2192 1990 3 80 2.4 9.70 12.00 202542.09+370842.6
20257+3709 ES 2192 2006 4 79 2.8 9.70 12.00 OB 202542.09+370842.6

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