18521+1635 BPM 871

 
 
18h 52m 07.65s +16 34' 37.2" P.A. 188 sep 76.6 mag 13.09,14.71
 
 
Coord 2000
18521+1635
Discov num
BPM 871
Comp
Coord arcsec 2000
18 52 07.65 +16 34 37.2
Date first
1994
Date last
2010
Obs
4
Pa first
188
Pa last
188
P.A. Now (θ)
188°
Sep first
76.4
Sep last
76.6
Sep. Now (ρ)
76.6"
Mag pri
13.09
Mag sec
14.71
delta mag (ΔM)
1.62
Spectral class
Pri motion ra
-011
Sec motion ra
-011
Pri motion dec
-002
Sec motion dec
-019
Notes
N V (See Notes, Proper motion indicates physical)
rPM=0.774
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
187.6
Precise sep
76.56
Constellation
Hercules
last precise pa
187.6
last precise sep
76.56
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18521+1635 BPM 871 1999 2 188 76.4 13.10 14.77 NV 185207.65+163437.2
18521+1635 BPM 871 2001 3 188 76.4 13.10 14.77 NV 185207.65+163437.2
18521+1635 BPM 871 2010 4 188 76.5 13.09 14.71 NV 185207.65+163437.2

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