18398-2920 RSS 487

 
 
18h 39m 48.25s -29 20' 21.4" P.A. 303 sep 11.5 mag 10.02,13.40 Sp B0.5III dist. 628.93 pc (2051.57 l.y.)
 
 
Coord 2000
18398-2920
Discov num
RSS 487
Comp
Coord arcsec 2000
18 39 48.25 -29 20 21.4
Date first
1977
Date last
2010
Obs
4
Pa first
304
Pa last
303
P.A. Now (θ)
303°
Sep first
12.0
Sep last
11.5
Sep. Now (ρ)
11.5"
Mag pri
10.02
Mag sec
13.40
delta mag (ΔM)
3.38
Spectral class
B0.5III (blue-white)
Pri motion ra
+001
Sec motion ra
-079
Pri motion dec
+002
Sec motion dec
+096
Notes
rPM=0.993
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
302.5
Precise sep
11.54
Constellation
Sagittarius
SAO
187100
HIP
91514
Tycho2
6870-00937-1
HD
172140
CD
CD-2915193
CP
CP-29 5634
Distance
628.93
Distance ly
2051.57
last precise pa
302.5
last precise sep
11.54
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18398-2920 RSS 487 1999 2 302 11.5 10.07   B0.5III D 183948.25-292021.4
18398-2920 RSS 487 2010 4 303 11.3 10.02 13.40 B0.5III 183948.25-292021.4

If you need more information about this double, apply for a data request form to the WDS.