20521+4923 ES  811

 
 
20h 52m 05.96s +49 21' 49.1" P.A. 159 sep 1.4 mag 10.34,10.43 Sp G0
 
 
Coord 2000
20521+4923
Discov num
ES  811
Comp
Coord arcsec 2000
20 52 05.96 +49 21 49.1
Date first
1909
Date last
2010
Obs
12
Pa first
138
Pa last
159
P.A. Now (θ)
159°
Sep first
2.0
Sep last
1.4
Sep. Now (ρ)
1.4"
Mag pri
10.34
Mag sec
10.43
delta mag (ΔM)
0.09
Spectral class
G0 (yellow)
Pri motion ra
-043
Sec motion ra
-043
Pri motion dec
-016
Sec motion dec
-016
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cygnus
Tycho2
3583-00040-1
last precise pa
158.6
last precise sep
1.391
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20521+4923 ES 811 2001 11 159 1.3 10.34 10.43 205205.96+492149.1
20521+4923 ES 811 2010 12 159 1.4 10.34 10.43 205205.96+492149.1

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