15394+3638 STF 1965 (Zet1 CrB)

 
 
15h 39m 22.68s +36° 38' 09.0" P.A. 306.00 sep 6.4 mag 4.96,5.91 Sp B7V+B9V dist. 145.14 pc (473.45 l.y.)
 
 
Coord 2000 15394+3638 Discov num STF1965 Comp Coord arcsec 2000 15 39 22.68 +36 38 09.0
Date first 1779 Date last 2021 Obs 343
Pa first 296 Pa last 306.4 P.A. Now (θ) 306.4°
Sep first 5.5 Sep last 6.38 Sep. Now (ρ) 6.38"
Mag pri 4.96 Mag sec 5.91 delta mag (ΔM) 0.95 Spectral class B7V+B9V (blue-white/blue-white)
Pri motion ra -017 Sec motion ra -015
Pri motion dec -004 Sec motion dec -007
Notes N (See Notes)
rPM=0.206 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Zet1 CrB Constellation Corona Borealis SAO 64833 HIP 76669
Tycho2 2577-01754-1 Gaia DR2 1374695306328813568 HD 139891 HR 5833
GC 21063 ADS 9737 BD BD+37 2665 Bayer Zeta 1 Coronae Borealis
Bayer name Zet1 CrB Flamsteed 7 Coronae Borealis Flamsteed name 7 CrB Distance 145.14
Distance ly 473.45 Bayer greek ζ1 CrB