Zeta Leonis
Zeta Leonis (ζ Leonis, abbreviated Zeta Leo, ζ Leo), also named Adhafera /ædəˈfɪərə/, is a third-magnitude star in the constellation of Leo, the lion. It forms the second star (after Gamma Leonis) in the blade of the sickle, which is an asterism formed from the head of Leo.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo |
| Right ascension | 10h 16m 41.41597s |
| Declination | +23° 25′ 02.3221″ |
| Apparent magnitude (V) | 3.33 |
| Characteristics | |
| Spectral type | F0 III |
| U−B color index | +0.07 |
| B−V color index | +0.30 |
| Variable type | Suspected |
| Astrometry | |
| Radial velocity (Rv) | −15.6 km/s |
| Proper motion (μ) | RA: +18.39 mas/yr Dec.: −6.84 mas/yr |
| Parallax (π) | 11.90 ± 0.18 mas |
| Distance | 274 ± 4 ly (84 ± 1 pc) |
| Absolute magnitude (MV) | −1.19 |
| Details | |
| Mass | 3 M☉ |
| Radius | 6 R☉ |
| Luminosity | 85 L☉ |
| Surface gravity (log g) | 3.0 cgs |
| Temperature | 6,792 K |
| Metallicity [Fe/H] | −0.03 dex |
| Rotational velocity (v sin i) | 72.4 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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