20240+4457 ES 1331

 
 
20h 23m 57.00s +44 56' 33.5" P.A. 78 sep 1.2 mag 10.43,10.81 Sp A5
 
 
Coord 2000
20240+4457
Discov num
ES 1331
Comp
Coord arcsec 2000
20 23 57.00 +44 56 33.5
Date first
1914
Date last
2015
Obs
7
Pa first
77
Pa last
78
P.A. Now (θ)
78°
Sep first
1.3
Sep last
1.2
Sep. Now (ρ)
1.2"
Mag pri
10.43
Mag sec
10.81
delta mag (ΔM)
0.38
Spectral class
A5 (white)
Pri motion ra
+008
Sec motion ra
+008
Pri motion dec
+004
Sec motion dec
+004
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
77.9
Precise sep
1.24
Constellation
Cygnus
Tycho2
3164-00855-1
Gaia DR2
58200415104
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20240+4457 ES 1331 1991 6 78 1.2 10.43 10.81 A5 202357.00+445633.5
20240+4457 ES 1331 2015 7 78 1.2 10.43 10.81 A5 202357.00+445633.5

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