18066+5001 STF 2290 AB (HD 234561)

18h 06m 37.28s +50° 00' 38.3" P.A. 351.00 sep 4.0 mag 9.23,11.20 Sp A5 dist. 684.93 pc (2234.24 l.y.)

Coord 2000 18066+5001 Discov num STF2290 Comp AB Coord arcsec 2000 18 06 37.28 +50 00 38.3
Date first 1832 Date last 2019 Obs 19
Pa first 351 Pa last 351.3 P.A. Now (θ) 351.3°
Sep first 3.9 Sep last 4.015 Sep. Now (ρ) 4.015"
Mag pri 9.23 Mag sec 11.20 delta mag (ΔM) 1.97 Spectral class A5 (white)
Pri motion ra -001 Sec motion ra
Pri motion dec -002 Sec motion dec
Notes




Nature of this double is uncertain.



18066+5001 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 30749 18 06 37 +50 00 38 COU 2276 Aa,Ab 2019 9 4 0.3 9.77 10.00 0.23
Show HD 234561 30749 18 06 37 +50 00 38 STF 2290 AB 2019 19 351 4.0 9.23 11.20 1.97 <===
Show 30749 18 06 37 +50 00 38 STF 2290 AC 2015 6 69 178.1 9.23 12.70 3.47


Quadruple system
3 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Name HD 234561 Constellation Hercules SAO 30749 HIP 88713
Tycho2 3532-01520-1 Gaia DR2 2123317481933143168 HD 234561 GC 24706
BD BD+49 2730 Distance 684.93 Distance ly 2234.24