18210-1805 DON 893

 
 
18H 21M 05.96S -18 04' 47.2" P.A. 220 SEP 2.8 MAG 9.47,13.20 SP B
 
 
Coord 2000
18210-1805
Discov num
DON 893
Comp
Coord arcsec 2000
18 21 05.96 -18 04 47.2
Date first
1932
Date last
2000
Obs
4
Pa first
226
Pa last
220
P.A. Now (θ)
220°
Sep first
2.4
Sep last
2.8
Sep. Now (ρ)
2.8"
Mag pri
9.47
Mag sec
13.20
delta mag (ΔM)
3.73
Spectral class
B (blue-white)
Pri motion ra
+000
Sec motion ra
Pri motion dec
+003
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
Tycho2
6269-01826-1
HD
168553
last precise pa
219.7
last precise sep
2.81