20478+4750 ES  810

 
 
20h 47m 49.29s +47 49' 54.9" P.A. 40 sep 20.7 mag 5.57,14.60 Sp K4III
 
 
Coord 2000
20478+4750
Discov num
ES  810
Comp
Coord arcsec 2000
20 47 49.29 +47 49 54.9
Date first
1909
Date last
2003
Obs
4
Pa first
42
Pa last
40
P.A. Now (θ)
40°
Sep first
18.3
Sep last
20.7
Sep. Now (ρ)
20.7"
Mag pri
5.57
Mag sec
14.60
delta mag (ΔM)
9.03
Spectral class
K4III (yellow-orange)
Pri motion ra
-006
Sec motion ra
Pri motion dec
-015
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
40.1
Precise sep
20.685
Cdsa2 id
ES 810
Constellation
Cygnus
SAO
50073
HD
198345
HR
7969
Ra deg
20.797025
De deg
47.83191666666667
last precise pa
40.1
last precise sep
20.685
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20478+4750 ES 810 1935 2 43 19.0 5.57 14.60 K4III N 204749.29+474954.9
20478+4750 ES 810 2003 4 40 20.7 5.57 14.60 K4III N 204749.29+474954.9
20478+4750 ES 810 2011 3 20 41.5 5.57 14.60 K4III N 204749.29+474954.9

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