Denebola
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo |
| Pronunciation | /dəˈnɛbələ/, |
| Right ascension | 11h 49m 03.57834s |
| Declination | +14° 34′ 19.4090″ |
| Apparent magnitude (V) | 2.14 |
| Characteristics | |
| Spectral type | A3Va |
| U−B color index | +0.07 |
| B−V color index | +0.09 |
| Variable type | δ Sct |
| Astrometry | |
| Radial velocity (Rv) | −0.2 km/s |
| Proper motion (μ) | RA: −497.68 mas/yr Dec.: −114.67 mas/yr |
| Parallax (π) | 90.91±0.52 mas |
| Distance | 35.9 ± 0.2 ly (11.00 ± 0.06 pc) |
| Absolute magnitude (MV) | +1.93 |
| Details | |
| Mass | 1.78 M☉ |
| Radius | 1.75±0.02 R☉ |
| Luminosity | 12.9±0.1 L☉ |
| Surface gravity (log g) | 4.0 cgs |
| Temperature | 8,262±36 K |
| Metallicity [Fe/H] | +0.00 dex |
| Rotational velocity (v sin i) | 128 km/s |
| Age | 100–380 Myr |
| Other designations | |
| Deneb Aleet, β Leonis, 94 Leo, BD+15°2383, FK5 444, GJ 448, HD 102647, HIP 57632, HR 4534, SAO 99809, LHS 2462, LTT 13249 | |
| Database references | |
| SIMBAD | data |
Denebola is the second-brightest individual star in the zodiac constellation of Leo. It is the easternmost of the bright stars of Leo. It has the Bayer designation Beta Leonis or β Leonis, which are abbreviated Beta Leo or β Leo. Denebola is an A-type main sequence star with 75% more mass than the Sun and 15 times the Sun's luminosity. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of 36 light-years (11 parsecs) from the Sun. Its apparent visual magnitude is 2.14, making it readily visible to the naked eye. Denebola is a Delta Scuti type variable star, meaning its luminosity varies very slightly over a period of a few hours.