20553+4218 OSO 137 AB

 
 
20h 55m 16.75s +42° 18' 00.6" P.A. 116.00 sep 10.8 mag 10.27,18.50 Sp G5 dist. 67.29 pc (219.5 l.y.)
 
 
Coord 2000 20553+4218 Discov num OSO 137 Comp AB Coord arcsec 2000 20 55 16.75 +42 18 00.6
Date first 1995 Date last 2000 Obs 2
Pa first 124 Pa last 115.7 P.A. Now (θ) 115.7°
Sep first 11.9 Sep last 10.75 Sep. Now (ρ) 10.75"
Mag pri 10.27 Mag sec 18.50 delta mag (ΔM) 8.23 Spectral class G5 (yellow)
Pri motion ra +057 Sec motion ra
Pri motion dec -390 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
20553+4218 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 55 17 +42 18 01 OSO 137 AB 2000 2 116 10.8 10.27 18.50 8.23 <===
Show 20 55 17 +42 18 01 OSO 137 AC 2000 2 225 11.6 10.27 18.40 8.13
Show 20 55 17 +42 18 01 OSO 137 AD 2000 2 276 14.3 10.27 18.70 8.43
Show 20 55 17 +42 18 01 OSO 137 AE 2000 2 295 14.9 10.27 18.90 8.63
Show 20 55 17 +42 18 01 OSO 137 AF 2000 2 137 16.8 10.27 17.90 7.63
Show 20 55 17 +42 18 01 OSO 137 AG 2000 2 346 25.0 10.27 17.50 7.23
Septuple system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus HIP 103269 Tycho2 3175-00128-1 BD BD+41 3931
Distance 67.29 Distance ly 219.5