Denebola
Star in the zodiac constellation of Leo / From Wikipedia, the free encyclopedia
This article is about the star. For other uses, see Denebola (disambiguation).
Not to be confused with Deneb, a star in the constellation Cygnus.
Denebola is the second-brightest individual star in the zodiac constellation of Leo.[14] 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.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Leo |
Pronunciation | /dəˈnɛbələ/,[1] |
Right ascension | 11h 49m 03.57834s[2] |
Declination | +14° 34′ 19.4090″[2] |
Apparent magnitude (V) | 2.14[3] |
Characteristics | |
Spectral type | A3Va[4] |
U−B color index | +0.07[5] |
B−V color index | +0.09[5] |
Variable type | δ Sct[3] |
Astrometry | |
Radial velocity (Rv) | −0.2[6] km/s |
Proper motion (μ) | RA: −497.68[2] mas/yr Dec.: −114.67[2] mas/yr |
Parallax (π) | 90.91 ± 0.52 mas[2] |
Distance | 35.9 ± 0.2 ly (11.00 ± 0.06 pc) |
Absolute magnitude (MV) | +1.93[7] |
Details | |
Mass | 1.78[8] M☉ |
Radius | 1.75±0.02[9] R☉ |
Luminosity | 12.9±0.1[9] L☉ |
Surface gravity (log g) | 4.0[10] cgs |
Temperature | 8,262±36[9] K |
Metallicity [Fe/H] | +0.00[8] dex |
Rotational velocity (v sin i) | 128[11] km/s |
Age | 100–380[8] Myr |
Other designations | |
Database references | |
SIMBAD | data |
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