18389+5221 STF 2368 AB (HD 172712)

 
 
18h 38m 51.27s +52° 20' 38.2" P.A. 321.00 sep 1.9 mag 7.63,7.77 Sp A3 dist. 263.16 pc (858.43 l.y.)
 
 
Coord 2000 18389+5221 Discov num STF2368 Comp AB Coord arcsec 2000 18 38 51.27 +52 20 38.2
Date first 1831 Date last 2017 Obs 94
Pa first 331 Pa last 320.9 P.A. Now (θ) 320.9°
Sep first 2.0 Sep last 1.915 Sep. Now (ρ) 1.915"
Mag pri 7.63 Mag sec 7.77 delta mag (ΔM) 0.14 Spectral class A3 (white)
Pri motion ra +008 Sec motion ra +008
Pri motion dec -003 Sec motion dec -003
Notes N (See Notes)
Nature of this double is uncertain.
 
 
18389+5221 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 172712 31086 18 38 51 +52 20 38 STF 2368 AB 2017 94 321 1.9 7.63 7.77 0.14 <===
Show 31086 18 38 51 +52 20 38 STF 2368 AC 2015 11 125 36.6 7.63 12.33 4.70
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 172712 Constellation Draco SAO 31086 HIP 91436
Tycho2 3539-00897-1 Gaia DR2 2145517622427994624 HD 172712 GC 25534
BD BD+52 2258 Distance 263.16 Distance ly 858.43