Chi Leonis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Leo |
| Right ascension | 11h 05m 01.02754s |
| Declination | +07° 20′ 09.6235″ |
| Apparent magnitude (V) | 4.63 |
| Characteristics | |
| Spectral type | F2III-IVv |
| U−B color index | +0.06 |
| B−V color index | +0.33 |
| Astrometry | |
| Radial velocity (Rv) | +4.7 km/s |
| Proper motion (μ) | RA: −344.28 mas/yr Dec.: −47.65 mas/yr |
| Parallax (π) | 34.49±0.20 mas |
| Distance | 94.6 ± 0.5 ly (29.0 ± 0.2 pc) |
| Absolute magnitude (MV) | +2.31 |
| Details | |
| Mass | 1.62 M☉ |
| Radius | 1.99 R☉ |
| Luminosity | 9.9 L☉ |
| Surface gravity (log g) | 4.02 cgs |
| Temperature | 7022±80 K |
| Metallicity [Fe/H] | +0.03 dex |
| Rotational velocity (v sin i) | 25±1 km/s |
| Age | 1.40 Gyr |
| Other designations | |
| χ Leo, 63 Leo, BD+08°2455, FK5 418, HD 96097, HIP 54182, HR 4310, SAO 118648 | |
| Database references | |
| SIMBAD | data |
Chi Leonis, Latinized from χ Leonis, is a double star in the constellation Leo. It is visible to the naked eye with an apparent visual magnitude of 4.63. The distance to this star, as determined using parallax measurements, is around 95 light years. It has an annual proper motion of 346 mas.
This is most likely a binary star system. The primary component is an evolved, F-type giant star with a stellar classification of F2III-IVv. It has an estimated 162% of the Sun's mass and nearly twice the Sun's radius. The companion is a magnitude 11.0 star at an angular separation of 4.1″ along a position angle of 264°, as of 1990.