18028+0137 BU  635BC

 
 
18H 02M 45.80S +01 36' 43.8" P.A. 122 SEP 1.5 MAG 9.93,10.90 SP A5
 
 
Coord 2000
18028+0137
Discov num
BU  635
Comp
BC
Coord arcsec 2000
18 02 45.80 +01 36 43.8
Date first
1878
Date last
2005
Obs
20
Pa first
115
Pa last
122
P.A. Now (θ)
122°
Sep first
1.6
Sep last
1.5
Sep. Now (ρ)
1.5"
Mag pri
9.93
Mag sec
10.90
delta mag (ΔM)
0.97
Spectral class
A5 (white)
Pri motion ra
+001
Sec motion ra
Pri motion dec
-005
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18028+0137 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18028+0137 BU 635 AB 1877 2016 19 301 68.7 8.63 9.93 1.30
Show 18028+0137 BU 635 BC 1878 2005 20 122 1.5 9.93 10.90 0.97 <===
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ophiuchus
Tycho2
0430-03398-1
last precise pa
121.8
last precise sep
1.46