20217+7345 A   870

 
 
20h 21m 42.97s +73 44' 39.5" P.A. 196 sep 0.1 mag 10.22,11.30 Sp F8
 
 
Coord 2000
20217+7345
Discov num
A   870
Comp
Coord arcsec 2000
20 21 42.97 +73 44 39.5
Date first
1904
Date last
2008
Obs
5
Pa first
240
Pa last
196
P.A. Now (θ)
196°
Sep first
0.5
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
10.22
Mag sec
11.30
delta mag (ΔM)
1.08
Spectral class
F8 (yellow-white)
Pri motion ra
+025
Sec motion ra
Pri motion dec
+024
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
195.5
Precise sep
0.106
Constellation
Draco
Tycho2
4458-01128-1
Gaia DR2
53735421312
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20217+7345 A 870 1930 3 241 0.5 10.22 11.30 202142.97+734439.5
20217+7345 A 870 2008 5 196 0.1 10.22 11.30 202142.97+734439.5

If you need more information about this double, apply for a data request form to the WDS.