Alpha Leporis
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Lepus |
| Right ascension | 05h 32m 43.8s |
| Declination | -17° 49′ 20.3″ |
| Apparent magnitude (V) | 2.58 |
| Characteristics | |
| Spectral type | F0 Ib |
| U-B color index | 0.23 |
| B-V color index | 0.21 |
| Variable type | ? |
| Astrometry | |
| Radial velocity (Rv) | 24 km/s |
| Proper motion (μ) | RA: 3.27 mas/yr Dec.: 1.54 mas/yr |
| Parallax (π) | 2.54 ± 0.72 mas |
| Distance | approx. 1300 ly (approx. 400 pc) |
| Absolute magnitude (MV) | -5.40 |
| Details | |
| Mass | 8-10 M☉ |
| Radius | 70.4 R☉ |
| Luminosity | 13,000 L☉ |
| Temperature | 7,350 K |
| Metallicity | ? |
| Rotation | 13 km/s. |
| Age | ? years |
| Other designations | |
Alpha Leporis (α Lep / α Leporis) is the brightest star in the constellation Lepus. It also has the traditional name Arneb (hare in Arabic).
Alpha Leporis is an older, dying star that may have already passed through a supergiant phase and is now contracting and heating up in the latter phases of stellar evolution, or perhaps is still expanding into the supergiant phase. With a mass of likely less than 10 times that of the Sun, it will likely end its life as a hot white dwarf, although if it is at the heavier end of its estimated mass it may end in a spectacular stellar explosion known as a supernova.
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