12207+2939 SDK  54

 
 
12h 20m 39.45s +29 38' 51.9" P.A. 316 sep 13.6 mag 15.73,17.10 Sp M
 
 
Coord 2000
12207+2939
Discov num
SDK  54
Comp
Coord arcsec 2000
12 20 39.45 +29 38 51.9
Date first
1955
Date last
2015
Obs
6
Pa first
317
Pa last
316
P.A. Now (θ)
316°
Sep first
13.6
Sep last
13.6
Sep. Now (ρ)
13.6"
Mag pri
15.73
Mag sec
17.10
delta mag (ΔM)
1.37
Spectral class
M (red)
Pri motion ra
-009
Sec motion ra
-008
Pri motion dec
-025
Sec motion dec
-022
Notes
rPM=0.119 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
316.3
Precise sep
13.564
Constellation
Coma Berenices
Gaia DR2
91791465728
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12207+2939 SDK 54 2000 2 316 13.6 15.30   M D 122039.45+293851.9
12207+2939 SDK 54 2001 3 317 13.7 15.73 17.10 M D 122039.45+293851.9
12207+2939 SDK 54 2010 5 316 13.5 15.73 17.10 M D 122039.45+293851.9
12207+2939 SDK 54 2015 6 316 13.6 15.73 17.10 M 122039.45+293851.9

If you need more information about this double, apply for a data request form to the WDS.