Alpha Leporis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lepus |
| Right ascension | 05h 32m 43.81612s |
| Declination | −17° 49′ 20.2414″ |
| Apparent magnitude (V) | 2.589 |
| Characteristics | |
| Evolutionary stage | Blue loop (yellow supergiant) |
| Spectral type | F0 Ib |
| U−B color index | +0.386 |
| B−V color index | +0.2 |
| Astrometry | |
| Radial velocity (Rv) | +23.9 km/s |
| Proper motion (μ) | RA: +3.56 mas/yr Dec.: +1.18 mas/yr |
| Parallax (π) | 1.47±0.14 mas |
| Distance | 2,200 ± 200 ly (680 ± 60 pc) |
| Absolute magnitude (MV) | −5.28 |
| Details | |
| Mass | 12–13 M☉ |
| Radius | 74 – 105+15 −21 R☉ |
| Luminosity | 27,000 L☉ |
| Surface gravity (log g) | 1.34±0.07 cgs |
| Temperature | 7,253 or 7,290 K |
| Metallicity [Fe/H] | +0.01–0.06 dex |
| Rotational velocity (v sin i) | 13–21 km/s |
| Age | 13 Myr |
| Other designations | |
| Arneb, 11 Leporis, BD−17°1166, FK5 207, HD 36673, HIP 25985, HR 1865, SAO 150547 | |
| Database references | |
| SIMBAD | data |
Alpha Leporis (α Leporis, abbreviated Alpha Lep, α Lep), formally named Arneb /ˈɑːrnɛb/, is the brightest star in the constellation of Lepus.