30 Leonis Minoris
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo Minor[1] |
| Right ascension | 10h 25m 54.81535s[2] |
| Declination | +33° 47′ 46.0309″[2] |
| Apparent magnitude (V) | 4.72[1] |
| Characteristics | |
| Evolutionary stage | subgiant[3][4] |
| Spectral type | kF0hF2mF2[5] or A9IIIa[6] |
| U−B color index | +0.18[7] |
| B−V color index | +0.25[7] |
| Astrometry | |
| Radial velocity (Rv) | +13.70[8] km/s |
| Proper motion (μ) | RA: −73.66[2] mas/yr Dec.: −59.21[2] mas/yr |
| Parallax (π) | 13.98±0.21 mas[2] |
| Distance | 233 ± 4 ly (72 ± 1 pc) |
| Absolute magnitude (MV) | 0.45[1] |
| Details | |
| Mass | 2.28[3] M☉ |
| Radius | 4.182[9] R☉ |
| Luminosity | 58[3] L☉ |
| Surface gravity (log g) | 3.82[10] cgs |
| Temperature | 7,292[10] K |
| Metallicity [Fe/H] | +0.19[10] dex |
| Rotational velocity (v sin i) | 34[3] km/s |
| Other designations | |
| 30 LMi, BD+34°2128, GC 14315, HD 90277, HIP 51056, HR 4090, SAO 62038[11] | |
| Database references | |
| SIMBAD | data |
30 Leonis Minoris is a single[12] star in the northern constellation of Leo Minor. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.72.[1] The distance to this star, as estimated from parallax measurements, is 233 light years.[2] It is drifting away from the Earth with a heliocentric radial velocity of +13.7 km/s.[8]
This object has been catalogued as an Am star[13] and was given a stellar classification of kF0hF2mF2[5] by Abt and Morrell (1995). This notation indicates the calcium K line matches an F0 star, while the hydrogen and metal lines fit an F2 star. However, Gray et al. (2001) assigned it a class of A9IIIa,[6] matching an A-type giant star. In stellar evolutionary terms, it is on the subgiant branch, having left the main sequence, and on its way to becoming a red giant.[3][4]
30 Leonis Minoris has 2.3[3] times the mass of the Sun and 4.2[9] times the Sun's radius. It has a moderate rate of spin, showing a projected rotational velocity of 34 km/s.[3] The star is radiating 58[3] times the Sun's luminosity from its photosphere at an effective temperature of 7,292 K.[10]
References
[edit | edit source]- ^ a b c d Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). XHIP record for this object at VizieR.
- ^ a b c d e f Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
- ^ a b c d e f g h Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR3 record for this source at VizieR.
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).Vizier catalog entry
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Vizier catalog entry
- ^ a b c d Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
