18103+0235 BU  638BC

 
 
18H 10M 21.33S +02 34' 49.7" P.A. 4 SEP 1.8 MAG 10.78,13.60
 
 
Coord 2000
18103+0235
Discov num
BU  638
Comp
BC
Coord arcsec 2000
18 10 21.33 +02 34 49.7
Date first
1878
Date last
2014
Obs
12
Pa first
12
Pa last
4
P.A. Now (θ)
Sep first
1.7
Sep last
1.8
Sep. Now (ρ)
1.8"
Mag pri
10.78
Mag sec
13.60
delta mag (ΔM)
2.82
Spectral class
Pri motion ra
-007
Sec motion ra
Pri motion dec
-016
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18103+0235 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18103+0235 STF2287 AB 1863 2014 19 153 22.9 10.51 10.78 0.27
Show 18103+0235 BU 638 AD 1909 2014 10 221 59.6 10.51 12.07 1.56
Show 18103+0235 BU 638 AE 1903 2000 2 344 13.7 10.51 15.50 4.99
Show 18103+0235 BU 638 BC 1878 2014 12 4 1.8 10.78 13.60 2.82 <===
Quintuple system
5 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ophiuchus
Tycho2
0435-02555-1
last precise pa
4
last precise sep
1.76