17357+0409 STF 2187 AB,C (HD 159645)

17h 35m 40.75s +04° 08' 49.6" P.A. 179.00 sep 3.3 mag 9.10,10.05 Sp F2

Coord 2000 17357+0409 Discov num STF2187 Comp AB,C Coord arcsec 2000 17 35 40.75 +04 08 49.6
Date first 1830 Date last 2013 Obs 39
Pa first 178 Pa last 178.7 P.A. Now (θ) 178.7°
Sep first 3.1 Sep last 3.286 Sep. Now (ρ) 3.286"
Mag pri 9.10 Mag sec 10.05 delta mag (ΔM) 0.95 Spectral class F2 (yellow-white)
Pri motion ra -004 Sec motion ra -003
Pri motion dec +029 Sec motion dec +021
Notes




rPM=0.275 (< 0.3, Physical double)

This double is physical.



17357+0409 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 17 35 41 +04 08 50 A 2985 AB 2017 13 343 0.3 9.50 9.50 0.00
Show HD 159645 17 35 41 +04 08 50 STF 2187 AB,C 2013 39 179 3.3 9.10 10.05 0.95 <===


Triple system
4 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Name HD 159645 Constellation Ophiuchus Tycho2 0422-01303-1 Gaia DR2 4377448573806397184
HD 159645