21287+1810 HU 490 AB

 
 
21h 28m 43.82s +18° 09' 47.3" P.A. 316.00 sep 0.4 mag 9.60,12.10 Sp F8
 
 
Coord 2000 21287+1810 Discov num HU  490 Comp AB Coord arcsec 2000 21 28 43.82 +18 09 47.3
Date first 1901 Date last 2017 Obs 13
Pa first 212 Pa last 315.7 P.A. Now (θ) 315.7°
Sep first 0.3 Sep last 0.36 Sep. Now (ρ) 0.36"
Mag pri 9.60 Mag sec 12.10 delta mag (ΔM) 2.5 Spectral class F8 (yellow-white)
Pri motion ra -038 Sec motion ra
Pri motion dec -037 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
21287+1810 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21 28 44 +18 09 47 HU 490 AB 2017 13 316 0.4 9.60 12.10 2.50 <===
Show 21 28 44 +18 09 47 B 2896 AC 1961 1 26 3.8 9.53 14.10 4.57
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pegasus Tycho2 1668-00206-1 Gaia DR2 1786048616600978560 ADS 15005