02502+7255 HJ 2157 AC

 
 
02h 50m 12.03s +72° 54' 51.6" P.A. 22.00 sep 24.4 mag 8.00,10.58 Sp B2.5V dist. 549.45 pc (1792.31 l.y.)
 
 
Coord 2000 02502+7255 Discov num HJ 2157 Comp AC Coord arcsec 2000 02 50 12.03 +72 54 51.6
Date first 1831 Date last 2015 Obs 17
Pa first 20 Pa last 22.1 P.A. Now (θ) 22.1°
Sep first 22.5 Sep last 24.442 Sep. Now (ρ) 24.442"
Mag pri 8.00 Mag sec 10.58 delta mag (ΔM) 2.58 Spectral class B2.5V (blue-white)
Pri motion ra +000 Sec motion ra -001
Pri motion dec +001 Sec motion dec +000
Notes N U (See Notes, Proper motion indicates non-physical)
rPM=1.414
This double is not physical.
 
 
02502+7255 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show V793 Cas 4738 02 50 12 +72 54 52 HJ 2157 AB 2015 15 287 11.2 8.00 11.40 3.40
Show 4738 02 50 12 +72 54 52 HJ 2157 AC 2015 17 22 24.4 8.00 10.58 2.58 <===
Show 4738 02 50 12 +72 54 52 HJ 2157 AD 2015 14 68 33.7 8.00 12.79 4.79
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name V793 Cas Constellation Cassiopeia SAO 4738 HIP 13221
Tycho2 4321-02203-1 Gaia DR2 545771119327389952 HD 17179 BD BD+72 145
Distance 549.45 Distance ly 1792.31