12207+2939 SDK  54

 
 
12h 20m 39.45s +29 38' 51.9" P.A. 316 sep 13.5 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
2010
Obs
5
Pa first
317
Pa last
316
P.A. Now (θ)
316°
Sep first
13.6
Sep last
13.5
Sep. Now (ρ)
13.5"
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
316.2
Precise sep
13.53
Cdsa2 id
SDK 54
Constellation
Coma Berenices
Ra deg
12.344291666666667
De deg
29.64775
last precise pa
316.2
last precise sep
13.53
 
 
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

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