20121+4618 OSO 120 AB

 
 
20h 12m 05.66s +46 18' 01.7" P.A. 30.00 sep 13.5 mag 9.13,17.00 Sp K2 dist. 39.84 pc (129.96 l.y.)
 
 
Coord 2000 20121+4618 Discov num OSO 120 Comp AB Coord arcsec 2000 20 12 05.66 +46 18 01.7
Date first 1995 Date last 1995 Obs 1
Pa first 30 Pa last 30 P.A. Now (θ) 30°
Sep first 13.5 Sep last 13.5 Sep. Now (ρ) 13.5"
Mag pri 9.13 Mag sec 17.00 delta mag (ΔM) 7.87 Spectral class K2 (yellow-orange)
Pri motion ra +222 Sec motion ra
Pri motion dec +292 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
20121+4618 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 49312 20 12 06 +46 18 02 OSO 120 AB 1995 1 30 13.5 9.13 17.00 7.87 <===
Show 49312 20 12 06 +46 18 02 OSO 120 AC 2003 3 192 16.7 9.13 15.20 6.07
Show 49312 20 12 06 +46 18 02 OSO 120 AD 1995 1 90 20.2 9.13 17.20 8.07
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 49312 HIP 99542 Tycho2 3559-02097-1
HD 192239 BD BD+45 3091 Distance 39.84 Distance ly 129.96