Epsilon Leonis

Epsilon Leonis
Location of ε Leonis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Leo
Right ascension 09h 45m 51.07330s[1]
Declination 23° 46′ 27.3208″[1]
Apparent magnitude (V) 2.98[2]
Characteristics
Spectral type G1 II[3]
U−B color index +0.47[2]
B−V color index +0.808[4]
Variable type suspected[5]
Astrometry
Radial velocity (Rv)4.86 ± 0.33[4] km/s
Proper motion (μ) RA: –45.61[1] mas/yr
Dec.: –9.21[1] mas/yr
Parallax (π)13.22 ± 0.15 mas[1]
Distance247 ± 3 ly
(75.6 ± 0.9 pc)
Absolute magnitude (MV)–1.49[6]
Details
Mass3.71±0.04[7] M☉
Radius21.03+0.31
−0.32[7] R☉
Luminosity282±13[8] L☉
Surface gravity (log g)2.36±0.05[8] cgs
Temperature5,314±17[8] K
Metallicity [Fe/H]−0.03±0.11[8] dex
Rotational velocity (v sin i)8.1[4] km/s
Age210±0[7] Myr
Other designations
Algenubi, Ras Elased Australis,[9] ε Leo, 17 Leo, BD +24°2129, FK5 367, GC 13443, HD 84441, HIP 47908, HR 3873, SAO 81004
Database references
SIMBADdata

Epsilon Leonis (ε Leo, ε Leonis) is the fifth-brightest star in the constellation Leo, consistent with its Bayer designation Epsilon. It is known as Algenubi or Ras Elased Australis. Both names mean "the southern star of the lion's head". Australis is Latin for "southern" and Genubi is Arabic for "south".

  1. ^ a b c d e Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference clpl4_99 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference aj135_1_209 was invoked but never defined (see the help page).
  5. ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  6. ^ Cite error: The named reference pasj60_4_781 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Baines2018 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Soubiran2024 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference kaler was invoked but never defined (see the help page).