16315+3331 BU  816 (31 Her)

 
 
16H 31M 30.59S +33 30' 49.3" P.A. 222 SEP 4.6 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
1998
Obs
18
Pa first
224
Pa last
222
P.A. Now (θ)
222°
Sep first
5.0
Sep last
4.6
Sep. Now (ρ)
4.6"
Mag pri
7.12
Mag sec
12.20
delta mag (ΔM)
5.08
Spectral class
A2V (white)
Pri motion ra
-021
Sec motion ra
Pri motion dec
-014
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
31 Her
Constellation
Hercules
SAO
65360
HIP
80927
Tycho2
2584-01679-1
HD
149141
GC
22235
BD
BD+33 2742
Flamsteed
31 Herculis
Flamsteed name
31 Her
Distance
125.94
Distance ly
410.82
last precise pa
221.9
last precise sep
4.63