21521+2748 HO 171 (HD 207931)

 
 
21h 52m 08.95s +27° 48' 02.2" P.A. 342.00 sep 0.8 mag 9.36,9.50 Sp A3 dist. 512.82 pc (1672.82 l.y.)
 
 
Coord 2000 21521+2748 Discov num HO  171 Comp Coord arcsec 2000 21 52 08.95 +27 48 02.2
Date first 1884 Date last 2016 Obs 64
Pa first 359 Pa last 341.5 P.A. Now (θ) 341.5°
Sep first 0.6 Sep last 0.758 Sep. Now (ρ) 0.758"
Mag pri 9.36 Mag sec 9.50 delta mag (ΔM) 0.14 Spectral class A3 (white)
Pri motion ra +013 Sec motion ra +013
Pri motion dec +004 Sec motion dec +004
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 207931 Constellation Pegasus SAO 90057 HIP 107946
Tycho2 2210-00105-1 Gaia DR2 1800212177498483840 HD 207931 BD BD+27 4184
Distance 512.82 Distance ly 1672.82