Star in the constellation Lepus
Kappa Leporis Observation dataEpoch J2000.0 Equinox J2000.0 (ICRS ) Constellation Lepus Right ascension 05h 13m 13.87761s [ 1] Declination −12° 56′ 28.6463″[ 1] Apparent magnitude (V)4.43 + 7.00[ 2] Characteristics Spectral type B9 V[ 3] U−Bcolor index −0.34[ 4] B−Vcolor index −0.10[ 4] Astrometry Radial velocity (Rv )± 1.0[ 5] km/s Proper motion (μ)RA: −12.29 [ 1] mas /yr Dec.: −0.79 [ 1] mas /yr Parallax (π)4.48± 0.58 mas [ 1] Distance approx. 730 ly pc ) Absolute magnitude (MV )−2.34[ 6] Details[ 3] κ Lep A Mass ± 0.39M ☉ Radius 2.6[ 7] R ☉ Luminosity 1,346 L ☉ Surface gravity (log g )3.44[ 8] cgs Temperature 11,588 K Metallicity −0.07[ 8] dex Rotational velocity (v sin i )135 km/s Other designations κ Lep 4 Lep BD −13° 1092GC 6387HD 33949HIP 24327HR 1705SAO 150239CCDM J05132-1256AB[ 9] Database references SIMBAD data
Kappa Leporis ,Latinized from κ Leporis, is abinary star [ 10] constellation ofLepus . The pair haveapparent visual magnitudes of 4.43 and 7.00, with the former being bright enough to be seen with the naked eye. As of 2000, they had anangular separation of 2.179 arc seconds along aposition angle of 357.3°. Based upon an annualparallax shift of 4.48 mas as measured from Earth,[ 1] light years from theSun . The system is travelling away from the Sun with aradial velocity of +20.8 km/s.[ 5]
The brighter, blue-white hued member of the system, component A, is aB-type main-sequence star with astellar classification of B9 V.[ 3] [ 3] mass of the Sun and around 2.6[ 7] Sun's radius . The star is radiating 1,346 times theSun's luminosity from itsphotosphere at aneffective temperature of 11,588 K.[ 3] infrared excess at a wavelength of 12μm , making it a candidate host for a circumstellardebris disk .[ 11]
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