18136-1536 BU  131AC

 
 
18H 13M 35.49S -15 35' 54.1" P.A. 299 SEP 9 MAG 7.54,11.75 SP F6V
 
 
Coord 2000
18136-1536
Discov num
BU  131
Comp
AC
Coord arcsec 2000
18 13 35.49 -15 35 54.1
Date first
1880
Date last
2005
Obs
19
Pa first
279
Pa last
299
P.A. Now (θ)
299°
Sep first
7.1
Sep last
9.0
Sep. Now (ρ)
9"
Mag pri
7.54
Mag sec
11.75
delta mag (ΔM)
4.21
Spectral class
F6V (yellow-white)
Pri motion ra
+012
Sec motion ra
Pri motion dec
-026
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18136-1536 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 18136-1536 BU 131 AB 1873 2005 39 277 3.2 7.54 9.30 1.76
Show 18136-1536 BU 131 AC 1880 2005 19 299 9.0 7.54 11.75 4.21 <===
Show 18136-1536 FOX 221 AD 1913 2000 5 35 40.4 7.54 12.52 4.98
Show 18136-1536 BU 131 BC 1880 2005 17 310 6.2 9.30 11.75 2.45
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Serpens
Tycho2
6264-01269-1
HD
166962
last precise pa
298.8
last precise sep
8.99