02308+5533 STF 270 AD

 
 
02h 30m 50.65s +55° 32' 54.2" P.A. 281.00 sep 51.1 mag 7.00,14.20 Sp F4V dist. 54.7 pc (178.43 l.y.)
 
 
Coord 2000 02308+5533 Discov num STF 270 Comp AD Coord arcsec 2000 02 30 50.65 +55 32 54.2
Date first 1902 Date last 2015 Obs 10
Pa first 268 Pa last 280.6 P.A. Now (θ) 280.6°
Sep first 42.5 Sep last 51.059 Sep. Now (ρ) 51.059"
Mag pri 7.00 Mag sec 14.20 delta mag (ΔM) 7.2 Spectral class F4V (yellow-white)
Pri motion ra +083 Sec motion ra +006
Pri motion dec -097 Sec motion dec -007
Notes N (See Notes)
rPM=0.928
This double is not physical.
 
 
02308+5533 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 15407 23389 02 30 51 +55 32 54 STF 270 AB 2016 45 305 21.3 7.00 9.66 2.66
Show 23389 02 30 51 +55 32 54 STF 270 AC 2015 13 333 48.0 7.00 11.37 4.37
Show 23389 02 30 51 +55 32 54 STF 270 AD 2015 10 281 51.1 7.00 14.20 7.20 <===
Show 02 30 49 +55 33 06 STF 270 BD 2015 7 265 32.8 9.66 14.20 4.54
Show 02 30 49 +55 33 06 RAO 42 BE 2015 7 208 16.0 9.66 14.70 5.04
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Perseus SAO 23389 HIP 11696 Tycho2 3691-00669-1
Gaia DR2 457326850673147264 HD 15407 BD BD+54 561 Distance 54.7
Distance ly 178.43