12055-6955 DON 509

 
 
12h 05m 32.91s -69 54' 47.5" P.A. 195 sep 0.3 mag 9.57,10.20 Sp B9.5V dist. 507.61 pc (1655.82 l.y.)
 
 
Coord 2000
12055-6955
Discov num
DON 509
Comp
Coord arcsec 2000
12 05 32.91 -69 54 47.5
Date first
1932
Date last
1991
Obs
3
Pa first
192
Pa last
195
P.A. Now (θ)
195°
Sep first
0.3
Sep last
0.3
Sep. Now (ρ)
0.3"
Mag pri
9.57
Mag sec
10.20
delta mag (ΔM)
0.63
Spectral class
B9.5V (blue-white)
Pri motion ra
-016
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
195
Precise sep
0.298
Cdsa2 id
DON 509
Constellation
Musca
HIP
58974
Tycho2
9231-01287-1
HD
105027
CP
CP-69 1630
Ra deg
12.092475
De deg
-69.91319444444446
Distance
507.61
Distance ly
1655.82
last precise pa
195
last precise sep
0.298
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12055-6955 DON 509 1991 3 195 0.3 9.57 10.20 B9.5V D 120532.91-695447.5

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