16312-2434 RAT  18BC

 
 
16H 31M 15.02S -24 32' 43.7" P.A. 270 SEP 1.2 MAG 9.00,16.80 SP M0+M9
 
 
Coord 2000
16312-2434
Discov num
RAT  18
Comp
BC
Coord arcsec 2000
16 31 15.02 -24 32 43.7
Date first
2001
Date last
2013
Obs
14
Pa first
268
Pa last
270
P.A. Now (θ)
270°
Sep first
1.1
Sep last
1.2
Sep. Now (ρ)
1.2"
Mag pri
9.00
Mag sec
16.80
delta mag (ΔM)
7.8
Spectral class
M0+M9 (red/red)
Pri motion ra
-008
Sec motion ra
Pri motion dec
-018
Sec motion dec
Notes
N K (See Notes, K-band or other infrared magnitudes)
Nature of this double is uncertain.
 
 
16312-2434 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 16312-2434 GHE 26 Aa,Ab 1990 2002 10 153 0.3 7.40 8.80 1.40
Show 16312-2434 BOV 56 AB 1954 2010 7 353 79.1 12.51 14.21 1.70
Show 16312-2434 RAT 18 Ba,Bb 2001 2001 1 158 0.1 9.00 10.10 1.10
Show 16312-2434 RAT 18 BC 2001 2013 14 270 1.2 9.00 16.80 7.80 <===
Show 16312-2434 CRE 1 BD 2011 2013 6 226 0.5 9.00 16.00 7.00
Sextuple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Ophiuchus
last precise pa
270.2
last precise sep
1.173