34 Leonis Minoris

34 Leonis Minoris
Location of 34 LMi on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Leo Minor
Right ascension 10h 33m 30.91104s[1]
Declination +34° 59′ 19.3006″[1]
Apparent magnitude (V) 5.58±0.01[2]
Characteristics
Evolutionary stage subgiant[3]
Spectral type A2 V[4]
U−B color index +0.04[4]
B−V color index +0.02[4]
Astrometry
Radial velocity (Rv)7±10[5] km/s
Proper motion (μ) RA: −28.397 mas/yr[1]
Dec.: −3.072 mas/yr[1]
Parallax (π)6.3892 ± 0.0706 mas[1]
Distance510 ± 6 ly
(157 ± 2 pc)
Absolute magnitude (MV)−1.02[6]
Details
Mass2.40±0.42[7] M☉
Radius4.85±0.25[8] R☉
Luminosity323+54
−46[3] L☉
Surface gravity (log g)3.50±0.25[7] cgs
Temperature9,333+152
−149[3] K
Metallicity [Fe/H]−0.03[9] dex
Rotational velocity (v sin i)165±8[10] km/s
Age406+134
−172[7] Myr
Other designations
11 H. Leonis Minoris,[11] 34 LMi, AG+35°1020, BD+35°2154, GC 14501, HD 91365, HIP 51685, HR 4137, SAO 62121[12]
Database references
SIMBADdata

34 Leonis Minoris (34 LMi), also known as HD 91365 or 11 H. Leonis Minoris is a solitary star[13] located in the northern constellation Leo Minor. It is faintly visible to the naked eye as a white-hued point of light with an apparent magnitude of 5.58.[2] Gaia DR3 parallax measurements imply a distance of 510 light-years,[1] and it is currently receding with a poorly constrained heliocentric radial velocity of 7 km/s.[5] At its current distance, 34 LMi's brightness is diminished by interstellar extinction of 0.16 magnitudes and it has an absolute magnitude of −1.02.[6]

The object has received several stellar classifications over the years. Most sources generally agree that it is an early A-type main-sequence star with the classes ranging from A0 to A2.[4][14][10] Anne Cowley and colleagues found that 34 LMi has broad or nebulous absorption lines in its spectrum,[15] which could be a result of rapid rotation. However, D. R. Palmer gave a class of A0 IV,[16] indicating that it is an evolved A-type subgiant.[16] Richard O. Gray and Robert F. Garrison found a class of A1 III-IV, indicating that it has a luminosity class intermediate between a subgiant and giant star.[17]

34 LMi has 2.4 times the mass of the Sun[7] and an enlarged radius of 4.85 R☉.[8] It radiates 323 times the luminosity of the Sun from its photosphere at an effective temperature of 9,333 K.[3] At the age of 406 million years[7] 34 LMi is 1.9% past its main sequence lifetime,[3] meaning that it has evolved to the subgiant branch. The star has a near-solar metallicity at [Fe/H] = −0.03 (93% solar).[9] Like many hot stars 34 LMi spins rapidly, having a projected rotational velocity of 165 km/s.[10]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Oja1991 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference Osawa1959 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Kharchenko2007 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c d e Cite error: The named reference Gullikson2016 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella2004 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Anders2019 was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference Abt1995 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Verbunt2010 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Cucchiaro1978 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Cowley1969 was invoked but never defined (see the help page).
  16. ^ a b Cite error: The named reference Palmer1968 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Gray1987 was invoked but never defined (see the help page).