18413+3018 BTG 2 AB,F

 
 
18h 41m 16.36s +30° 17' 40.9" P.A. 173.00 sep 42.4 mag 7.05,15.10 Sp G5IV dist. 136.05 pc (443.8 l.y.)
 
 
Coord 2000 18413+3018 Discov num BTG   2 Comp AB,F Coord arcsec 2000 18 41 16.36 +30 17 40.9
Date first 1998 Date last 2007 Obs 3
Pa first 173 Pa last 173.4 P.A. Now (θ) 173.4°
Sep first 42.9 Sep last 42.43 Sep. Now (ρ) 42.43"
Mag pri 7.05 Mag sec 15.10 delta mag (ΔM) 8.05 Spectral class G5IV (yellow)
Pri motion ra +002 Sec motion ra
Pri motion dec -040 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
18413+3018 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 67250 18 41 16 +30 17 41 STF 2367 AB 2019 185 73 0.4 7.70 8.03 0.33 Y
Show HD 172865 67250 18 41 16 +30 17 41 STF 2367 AB,C 2019 81 192 14.1 7.05 8.75 1.70
Show 67250 18 41 16 +30 17 41 STF 2367 AB,D 2007 3 84 21.9 7.05 12.00 4.95
Show 67250 18 41 16 +30 17 41 STF 2367 AB,E 2002 4 341 151.7 7.05 11.00 3.95
Show 67250 18 41 16 +30 17 41 BTG 2 AB,F 2007 3 173 42.4 7.05 15.10 8.05 <===
Sextuple system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Lyra SAO 67250 HIP 91636 Tycho2 2637-00713-1
Gaia DR2 4587747627368445952 HD 172865 BD BD+30 3271 Distance 136.05
Distance ly 443.8