21287+5710 BU 1142

 
 
21h 28m 41.72s +57° 09' 33.7" P.A. 6.00 sep 0.4 mag 10.58,10.69 Sp F8
 
 
Coord 2000 21287+5710 Discov num BU 1142 Comp Coord arcsec 2000 21 28 41.72 +57 09 33.7
Date first 1889 Date last 2016 Obs 15
Pa first 354 Pa last 5.5 P.A. Now (θ) 5.5°
Sep first 0.4 Sep last 0.369 Sep. Now (ρ) 0.369"
Mag pri 10.58 Mag sec 10.69 delta mag (ΔM) 0.11 Spectral class F8 (yellow-white)
Pri motion ra +005 Sec motion ra +005
Pri motion dec -004 Sec motion dec -004
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cepheus Tycho2 3974-00775-1 ADS 15015