18549-2357 RCH 7 AB

 
 
18h 54m 53.19s -23° 57' 03.5" P.A. 20.00 sep 1.6 mag 7.89,11.07
 
 
Coord 2000 18549-2357 Discov num RCH   7 Comp AB Coord arcsec 2000 18 54 53.19 -23 57 03.5
Date first 2009 Date last 2016 Obs 2
Pa first 20 Pa last 19.6 P.A. Now (θ) 19.6°
Sep first 1.6 Sep last 1.591 Sep. Now (ρ) 1.591"
Mag pri 7.89 Mag sec 11.07 delta mag (ΔM) 3.18 Spectral class
Pri motion ra -003 Sec motion ra
Pri motion dec -004 Sec motion dec
Notes K (K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
18549-2357 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18 54 53 -23 57 04 RCH 7 AB 2016 2 20 1.6 7.89 11.07 3.18 <===
Show 18 54 53 -23 57 04 OCC 1044 Aa,Ab 2009 0 -1 0.0 7.90 11.70 3.80
Show 18 54 53 -23 57 04 OCC 1044 Aa,Ac 2009 0 -1 0.0 7.90 12.20 4.30
Quadruple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius Tycho2 6860-01491-1 Gaia DR2 4075291508516892032