Back الصرفة (نجم) Arabic Denébola AST Дэнебола Byelorussian Denebola Catalan Denebola Czech Denebola German Ντενέμπολα Greek Denébola Spanish Denebola Estonian ذنب‌الاسد Persian

Denebola

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
Location of β Leonis (circled)
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]
Distance35.9 ± 0.2 ly
(11.00 ± 0.06 pc)
Absolute magnitude (MV)+1.93[7]
Details
Mass1.78[8] M☉
Radius1.75±0.02[9] R☉
Luminosity12.9±0.1[9] L☉
Surface gravity (log g)4.0[10] cgs
Temperature8,262±36[9] K
Metallicity [Fe/H]+0.00[8] dex
Rotational velocity (v sin i)128[11] km/s
Age100–380[8] 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[12][13]
Database references
SIMBADdata

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.

  1. ^ "Denebola". Merriam-Webster.com Dictionary. Merriam-Webster.
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  5. ^ a b Cite error: The named reference hr was invoked but never defined (see the help page).
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  7. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference aaa426 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference 2023AJ....166..268B was invoked but never defined (see the help page).
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  13. ^ Cite error: The named reference alcyone was invoked but never defined (see the help page).
  14. ^ The two components of the γ Leonis double star, which are unresolved to the naked eye, have a combined magnitude brighter than it.
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