18121+0258 GRV 231

 
 
18h 12m 07.08s +02 58' 47.6" P.A. 181 sep 50.8 mag 12.89,13.75
 
 
Coord 2000
18121+0258
Discov num
GRV 231
Comp
Coord arcsec 2000
18 12 07.08 +02 58 47.6
Date first
1953
Date last
2013
Obs
10
Pa first
181
Pa last
181
P.A. Now (θ)
181°
Sep first
51.8
Sep last
50.8
Sep. Now (ρ)
50.8"
Mag pri
12.89
Mag sec
13.75
delta mag (ΔM)
0.86
Spectral class
Pri motion ra
-015
Sec motion ra
-003
Pri motion dec
-020
Sec motion dec
-006
Notes
U (Proper motion indicates non-physical)
rPM=0.738
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
181.1
Precise sep
50.76
Constellation
Ophiuchus
last precise pa
181.1
last precise sep
50.76
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18121+0258 GRV 231 2000 2 181 51.0 12.60 13.20 D 181207.08+025847.6
18121+0258 GRV 231 2010 9 181 50.8 12.89 13.75 181207.08+025847.6
18121+0258 GRV 231 2013 10 181 50.8 12.89 13.75 U 181207.08+025847.6

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