17593-0651 STF 2250 AB (HD 163998)

 
 
17h 59m 18.09s -06° 51' 21.2" P.A. 344.00 sep 7.8 mag 8.79,9.24 Sp B9 dist. 645.16 pc (2104.51 l.y.)
 
 
Coord 2000 17593-0651 Discov num STF2250 Comp AB Coord arcsec 2000 17 59 18.09 -06 51 21.2
Date first 1830 Date last 2019 Obs 41
Pa first 347 Pa last 344 P.A. Now (θ) 344°
Sep first 8.6 Sep last 7.82 Sep. Now (ρ) 7.82"
Mag pri 8.79 Mag sec 9.24 delta mag (ΔM) 0.45 Spectral class B9 (blue-white)
Pri motion ra -005 Sec motion ra -005
Pri motion dec -008 Sec motion dec -010
Notes N (See Notes)
rPM=0.179 (< 0.3, Physical double)
This double is physical.
 
 
17593-0651 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 163998 142008 17 59 18 -06 51 21 STF 2250 AB 2019 41 344 7.8 8.79 9.24 0.45 <===
Show 142008 17 59 18 -06 51 21 SIN 106 AC 2015 7 92 45.0 8.79 14.21 5.42
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 163998 Constellation Ophiuchus SAO 142008 HIP 88078
Tycho2 5095-00443-1 Gaia DR2 4172046401447484672 HD 163998 GC 24479
BD BD-06 4689 Distance 645.16 Distance ly 2104.51