16555-2134 BU  241

 
 
16h 55m 32.54s -21 34' 10.2" P.A. 22 sep 0.3 mag 7.09,7.83 Sp B9III dist. 262.47 pc (856.18 l.y.)
 
 
Coord 2000
16555-2134
Discov num
BU  241
Comp
Coord arcsec 2000
16 55 32.54 -21 34 10.2
Date first
1874
Date last
2013
Obs
49
Pa first
314
Pa last
22
P.A. Now (θ)
22°
Sep first
0.5
Sep last
0.3
Sep. Now (ρ)
0.3"
Mag pri
7.09
Mag sec
7.83
delta mag (ΔM)
0.74
Spectral class
B9III (blue-white)
Pri motion ra
-007
Sec motion ra
-007
Pri motion dec
-006
Sec motion dec
-006
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
22.3
Precise sep
0.25
Constellation
Ophiuchus
SAO
184804
HIP
82822
Tycho2
6230-01882-1
HD
152655
BD
BD-21 4449
Distance
262.47
Distance ly
856.18
last precise pa
22.3
last precise sep
0.25
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16555-2134 BU 241 1991 46 12 0.3 7.09 7.83 B9III D 165532.54-213410.2
16555-2134 BU 241 2008 48 23 0.3 7.09 7.83 B9III D 165532.54-213410.2
16555-2134 BU 241 2013 49 22 0.3 7.09 7.83 B9III 165532.54-213410.2

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