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Alpha Leporis

α Leporis
Location of α Leporis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Lepus
Right ascension 05h 32m 43.81612s[1]
Declination −17° 49′ 20.2414″[1]
Apparent magnitude (V) 2.589[2]
Characteristics
Spectral type F0 Ib[3]
U−B color index +0.386[2]
B−V color index +0.2[4]
Astrometry
Radial velocity (Rv)+23.9[5] km/s
Proper motion (μ) RA: +3.56[1] mas/yr
Dec.: +1.18[1] mas/yr
Parallax (π)1.47 ± 0.14 mas[1]
Distance2,200 ± 200 ly
(680 ± 60 pc)[1]
Absolute magnitude (MV)-5.7[6]
Details
Mass12.2±0.1[7]–13.9±0.8[8] M☉
Radius75[9][a] – 129[3] R☉
Luminosity12,000[9] – 30,502±3,111[10] L☉
Surface gravity (log g)1.25[6] cgs
Temperature6,850–7,500[11] K
Metallicity [Fe/H]+0.01[6] dex
Rotational velocity (v sin i)13–21[4] km/s
Age17.5±1.4[7] Myr
Other designations
Arneb, 11 Leporis, BD−17°1166, FK5 207, HD 36673, HIP 25985, HR 1865, SAO 150547
Database references
SIMBADdata

Alpha Leporis (α Leporis, abbreviated Alpha Lep, α Lep), formally named Arneb /ˈɑːrnɛb/,[12][13] is the brightest star in the constellation of Lepus.

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  12. ^ Kunitzsch, Paul; Smart, Tim (2006). A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations (2nd rev. ed.). Cambridge, Massachusetts: Sky Pub. ISBN 978-1-931559-44-7.
  13. ^ "IAU Catalog of Star Names". Retrieved July 28, 2016.


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