00493-2124 BU 301 AB (HD 4731)

 
 
00h 49m 18.31s -21 23' 50.6" P.A. 331.00 sep 0.8 mag 8.89,12.53 Sp F3IV/V dist. 125 pc (407.75 l.y.)
 
 
Coord 2000 00493-2124 Discov num BU  301 Comp AB Coord arcsec 2000 00 49 18.31 -21 23 50.6
Date first 1891 Date last 2001 Obs 7
Pa first 319 Pa last 330.5 P.A. Now (θ) 330.5°
Sep first 0.9 Sep last 0.81 Sep. Now (ρ) 0.81"
Mag pri 8.89 Mag sec 12.53 delta mag (ΔM) 3.64 Spectral class F3IV/V (yellow-white)
Pri motion ra +038 Sec motion ra +027
Pri motion dec +009 Sec motion dec +006
Notes
rPM=0.292 (< 0.3, Physical double)
This double is physical.
 
 
00493-2124 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 4731 166603 00 49 18 -21 23 51 BU 301 AB 2001 7 331 0.8 8.89 12.53 3.64 <===
Show 166603 00 49 18 -21 23 51 BU 301 AC 2016 20 299 11.0 8.89 9.98 1.09
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 4731 Constellation Cetus SAO 166603 HIP 3845
Tycho2 5850-02582-1 Gaia DR2 2349697309661130624 HD 4731 ADS 681
BD BD-22 138 Distance 125 Distance ly 407.75