16515-4450 DON 813

 
 
16h 51m 29.32s -44 50' 03.0" P.A. 131 sep 0.4 mag 11.50,12.20 Sp B9
 
 
Coord 2000
16515-4450
Discov num
DON 813
Comp
Coord arcsec 2000
16 51 29.32 -44 50 03.0
Date first
1930
Date last
1948
Obs
3
Pa first
128
Pa last
131
P.A. Now (θ)
131°
Sep first
0.4
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
11.50
Mag sec
12.20
delta mag (ΔM)
0.7
Spectral class
B9 (blue-white)
Pri motion ra
-006
Sec motion ra
Pri motion dec
-008
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
130.9
Precise sep
0.44
Constellation
Scorpius
Tycho2
7880-03843-1
HD
328920
last precise pa
130.9
last precise sep
0.44
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16515-4450 DON 813 1948 3 131 0.4 11.50 12.20 B9 165129.32-445003.0

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