18257-2102 HLD 144CD

 
 
18H 25M 34.19S -21 02' 06.1" P.A. 159 SEP 7.8 MAG 11.50,11.80
 
 
Coord 2000
18257-2102
Discov num
HLD 144
Comp
CD
Coord arcsec 2000
18 25 34.19 -21 02 06.1
Date first
1909
Date last
1999
Obs
4
Pa first
160
Pa last
159
P.A. Now (θ)
159°
Sep first
9.8
Sep last
7.8
Sep. Now (ρ)
7.8"
Mag pri
11.50
Mag sec
11.80
delta mag (ΔM)
0.3
Spectral class
Pri motion ra
+002
Sec motion ra
-019
Pri motion dec
+006
Sec motion dec
+010
Notes
Nature of this double is uncertain.
 
 
18257-2102 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18257-2102 HLD 144 AB 1888 1991 14 42 2.8 9.20 9.13 0.07
Show 18257-2102 HLD 144 AC 1909 1999 3 280 69.0 9.20 12.60 3.40
Show 18257-2102 HLD 144 CD 1909 1999 4 159 7.8 11.50 11.80 0.30 <===
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Sagittarius
last precise pa
159.1
last precise sep
7.776