18210-1939 BU   48CD

 
 
18H 20M 56.10S -19 39' 10.3" P.A. 58 SEP 16.4 MAG 11.27,11.26
 
 
Coord 2000
18210-1939
Discov num
BU   48
Comp
CD
Coord arcsec 2000
18 20 56.10 -19 39 10.3
Date first
1991
Date last
2016
Obs
7
Pa first
53
Pa last
58
P.A. Now (θ)
58°
Sep first
17.5
Sep last
16.4
Sep. Now (ρ)
16.4"
Mag pri
11.27
Mag sec
11.26
delta mag (ΔM)
0.01
Spectral class
Pri motion ra
+004
Sec motion ra
-002
Pri motion dec
-017
Sec motion dec
+003
Notes
Nature of this double is uncertain.
 
 
18210-1939 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18210-1939 BU 48 AB 1871 2002 25 351 2.8 8.05 9.58 1.53
Show 18210-1939 BU 48 AC 1991 2000 4 283 78.3 8.05 11.27 3.22
Show 18210-1939 BU 48 CD 1991 2016 7 58 16.4 11.27 11.26 0.01 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
Tycho2
6273-00507-1
last precise pa
58
last precise sep
16.375