46 Leonis Minoris
 Location of 46 Leonis Minoris (circled) |
|
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Leo Minor |
| Right ascension | 10h 53m 18.70487s |
| Declination | +34° 12′ 53.5375″ |
| Apparent magnitude (V) | 3.83(3.79 - 3.84) |
| Characteristics | |
| Spectral type | K0+ III-IV |
| Astrometry | |
| Proper motion (μ) |
RA: +92.02 mas/yr Dec.: –285.82 mas/yr |
| Parallax (π) | 34.38 ± 0.21mas |
| Distance | 94.9 ± 0.6 ly (29.1 ± 0.2 pc) |
| Absolute magnitude (MV) | +1.45 |
| Details | |
| Mass | 1.69 M☉ |
| Radius | 8.22 ± 0.22 R☉ |
| Luminosity | 34 ± 2 L☉ |
| Surface gravity (log g) | 2.96 cgs |
| Temperature | 4,670 K |
| Metallicity [Fe/H] | −0.20 dex |
| Rotational velocity (v sin i) | 1.81 km/s |
| Age | 6.76 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Praecipua is the brightest star in the constellation Leo Minor. It is sometimes known as "o LMi" (not "ο LMi"), from Bode's catalogue of 1801. It was presumably intended to be designated α, as Francis Baily decided to letter each star brighter than magnitude 4.5, but the designation was missing from his catalogue, even though the dimmer β was included.
Its proper name is derived from the Latin "the Chief (Star of Leo Minor)". The name may originally have referred to 37 Leonis Minoris, and later mistransfered to this star. It is known as 勢四, "the Fourth (Star) of the ", in traditional Chinese astronomy.
46 LMi has spectral class K0+III-IV and is of magnitude 3.83. It is a red clump giant. Its distance from Earth is approximately 95 light years. It is a suspected variable with an amplitude of about 0.05 magnitudes.
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