18055-2109 RST5100

 
 
18h 05m 28.77s -21 08' 31.9" P.A. 283 sep 0.7 mag 8.80,11.40 Sp B9III
 
 
Coord 2000
18055-2109
Discov num
RST5100
Comp
Coord arcsec 2000
18 05 28.77 -21 08 31.9
Date first
1941
Date last
1951
Obs
2
Pa first
286
Pa last
283
P.A. Now (θ)
283°
Sep first
0.7
Sep last
0.7
Sep. Now (ρ)
0.7"
Mag pri
8.80
Mag sec
11.40
delta mag (ΔM)
2.6
Spectral class
B9III (blue-white)
Pri motion ra
+004
Sec motion ra
Pri motion dec
-004
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
283
Precise sep
0.68
Constellation
Sagittarius
SAO
186257
Tycho2
6263-00840-1
HD
165151
last precise pa
283
last precise sep
0.68
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18055-2109 RST5100 1951 2 283 0.7 8.80 11.40 B9III 180528.77-210831.9

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