18389-2103 TNN 11 AC

 
 
18h 38m 53.40s -21° 03' 06.7" P.A. 340.00 sep 5.0 mag 4.23,15.90 Sp G6V dist. 13.08 pc (42.67 l.y.)
 
 
Coord 2000 18389-2103 Discov num TNN  11 Comp AC Coord arcsec 2000 18 38 53.40 -21 03 06.7
Date first 2004 Date last 2004 Obs 1
Pa first 340 Pa last 339.8 P.A. Now (θ) 339.8°
Sep first 5.0 Sep last 5.02 Sep. Now (ρ) 5.02"
Mag pri 4.23 Mag sec 15.90 delta mag (ΔM) 11.67 Spectral class G6V (yellow)
Pri motion ra -075 Sec motion ra
Pri motion dec -152 Sec motion dec
Notes U K (Proper motion indicates non-physical, 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
This double is not physical.
 
 
18389-2103 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 187086 18 38 53 -21 03 07 WSI 90 AB 2009 5 138 0.0 6.00 8.40 2.40
Show 187086 18 38 53 -21 03 07 TNN 11 AC 2004 1 340 5.0 4.23 15.90 11.67 <===
Show 187086 18 38 53 -21 03 07 TNN 11 AD 2004 1 30 6.4 4.23 17.50 13.27
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 187086 HIP 91438 Tycho2 6279-01723-1
Gaia DR2 4079684229322231040 HD 172051 HR 6998 GL Gl 722
BD BD-21 5081 Distance 13.08 Distance ly 42.67