34 Leonis Minoris
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Leo Minor |
| Right ascension | 10h 33m 30.91104s |
| Declination | +34° 59′ 19.3006″ |
| Apparent magnitude (V) | 5.58±0.01 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | A2 V |
| U−B color index | +0.04 |
| B−V color index | +0.02 |
| Astrometry | |
| Radial velocity (Rv) | 7±10 km/s |
| Proper motion (μ) | RA: −28.397 mas/yr Dec.: −3.072 mas/yr |
| Parallax (π) | 6.3892±0.0706 mas |
| Distance | 510 ± 6 ly (157 ± 2 pc) |
| Absolute magnitude (MV) | −1.02 |
| Details | |
| Mass | 2.40±0.42 M☉ |
| Radius | 4.85±0.25 R☉ |
| Luminosity | 323+54 −46 L☉ |
| Surface gravity (log g) | 3.50±0.25 cgs |
| Temperature | 9,333+152 −149 K |
| Metallicity [Fe/H] | −0.03 dex |
| Rotational velocity (v sin i) | 165±8 km/s |
| Age | 406+134 −172 Myr |
| Other designations | |
| 11 H. Leonis Minoris, 34 LMi, AG+35°1020, BD+35°2154, GC 14501, HD 91365, HIP 51685, HR 4137, SAO 62121 | |
| Database references | |
| SIMBAD | data |
34 Leonis Minoris (34 LMi), also known as HD 91365 or 11 H. Leonis Minoris is a solitary star 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. Gaia DR3 parallax measurements imply a distance of 510 light-years, and it is currently receding with a poorly constrained heliocentric radial velocity of 7 km/s. 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.
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. Anne Cowley and colleagues found that 34 LMi has broad or nebulous absorption lines in its spectrum, which could be a result of rapid rotation. However, D. R. Palmer gave a class of A0 IV, indicating that it is an evolved A-type subgiant. 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.
34 LMi has 2.4 times the mass of the Sun and an enlarged radius of 4.85 R☉. It radiates 323 times the luminosity of the Sun from its photosphere at an effective temperature of 9,333 K. At the age of 406 million years 34 LMi is 1.9% past its main sequence lifetime, meaning that it has evolved to the subgiant branch. The star has a near-solar metallicity at [Fe/H] = −0.03 (93% solar). Like many hot stars 34 LMi spins rapidly, having a projected rotational velocity of 165 km/s.