12172+1737 COU 180

 
 
12h 17m 09.29s +17 37' 06.4" P.A. 276 sep 7.6 mag 10.53,13.50 Sp F8
 
 
Coord 2000
12172+1737
Discov num
COU 180
Comp
Coord arcsec 2000
12 17 09.29 +17 37 06.4
Date first
1967
Date last
2010
Obs
5
Pa first
275
Pa last
276
P.A. Now (θ)
276°
Sep first
6.9
Sep last
7.6
Sep. Now (ρ)
7.6"
Mag pri
10.53
Mag sec
13.50
delta mag (ΔM)
2.97
Spectral class
F8 (yellow-white)
Pri motion ra
-051
Sec motion ra
Pri motion dec
-005
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
276
Precise sep
7.56
Constellation
Coma Berenices
Tycho2
1445-02182-1
last precise pa
276
last precise sep
7.56
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12172+1737 COU 180 2000 3 274 7.5 10.53 13.50 F8 D 121709.29+173706.4
12172+1737 COU 180 2001 4 275 7.5 10.53 13.50 F8 D 121709.29+173706.4
12172+1737 COU 180 2010 5 276 7.4 10.53 13.50 F8 121709.29+173706.4

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