20311+5022 ES 1101

 
 
20h 30m 55.55s +50 21' 44.1" P.A. 240 sep 2.2 mag 11.16,11.92
 
 
Coord 2000
20311+5022
Discov num
ES 1101
Comp
Coord arcsec 2000
20 30 55.55 +50 21 44.1
Date first
1911
Date last
2005
Obs
4
Pa first
241
Pa last
240
P.A. Now (θ)
240°
Sep first
1.7
Sep last
2.2
Sep. Now (ρ)
2.2"
Mag pri
11.16
Mag sec
11.92
delta mag (ΔM)
0.76
Spectral class
Pri motion ra
+012
Sec motion ra
Pri motion dec
+007
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
240.4
Precise sep
2.16
Constellation
Cygnus
Tycho2
3581-00430-1
Gaia DR2
70463268736
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20311+5022 ES 1101 2005 4 240 2.1 11.16 11.92 203055.55+502144.1

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