20123-3956 WG  251

 
 
20h 12m 18.78s -39 55' 42.3" P.A. 306 sep 9.6 mag 11.40,11.90
 
 
Coord 2000
20123-3956
Discov num
WG  251
Comp
Coord arcsec 2000
20 12 18.78 -39 55 42.3
Date first
1904
Date last
2015
Obs
7
Pa first
306
Pa last
306
P.A. Now (θ)
306°
Sep first
8.9
Sep last
9.6
Sep. Now (ρ)
9.6"
Mag pri
11.40
Mag sec
11.90
delta mag (ΔM)
0.5
Spectral class
Pri motion ra
-002
Sec motion ra
-013
Pri motion dec
+003
Sec motion dec
+007
Notes
rPM=0.793
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
306.2
Precise sep
9.596
Constellation
Sagittarius
Gaia DR2
30430457088
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20123-3956 WG 251 2000 3 306 9.6 11.40 11.90 D 201218.78-395542.3
20123-3956 WG 251 2010 6 306 9.3 11.40 11.90 201218.78-395542.3
20123-3956 WG 251 2015 7 306 9.6 11.40 11.90 201218.78-395542.3

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