16315+3331 BU 816 (31 Her)

 
 
16h 31m 30.59s +33° 30' 49.3" P.A. 221.00 sep 4.9 mag 7.12,12.20 Sp A2V dist. 125.94 pc (410.82 l.y.)
 
 
Coord 2000 16315+3331 Discov num BU  816 Comp Coord arcsec 2000 16 31 30.59 +33 30 49.3
Date first 1881 Date last 2018 Obs 38
Pa first 224 Pa last 220.6 P.A. Now (θ) 220.6°
Sep first 5.0 Sep last 4.87 Sep. Now (ρ) 4.87"
Mag pri 7.12 Mag sec 12.20 delta mag (ΔM) 5.08 Spectral class A2V (white)
Pri motion ra -025 Sec motion ra -020
Pri motion dec -011 Sec motion dec -010
Notes T (Parallax indicates physical)
rPM=0.187 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 31 Her Constellation Hercules SAO 65360 HIP 80927
Tycho2 2584-01679-1 Gaia DR2 1325796996291354880 HD 149141 GC 22235
ADS 10100 BD BD+33 2742 Flamsteed 31 Herculis Flamsteed name 31 Her
Distance 125.94 Distance ly 410.82