| Observation data EpochJ2000.0 EquinoxJ2000.0 (ICRS) | |
|---|---|
| Constellation | Lepus |
| Right ascension | 06h 06m 09.32339s[1] |
| Declination | −14° 56′ 06.9188″[1] |
| Apparent magnitude (V) | 4.67[2] |
| Characteristics | |
| Spectral type | A0 V[3] |
| U−Bcolor index | +0.00[2] |
| B−Vcolor index | +0.05[2] |
| Astrometry | |
| Radial velocity (Rv) | +32.0[4] km/s |
| Proper motion (μ) | RA: -17.61[1]mas/yr Dec.: +12.79[1]mas/yr |
| Parallax (π) | 18.88±0.54 mas[1] |
| Distance | 173 ± 5 ly (53 ± 2 pc) |
| Absolute magnitude (MV) | +1.05[5] |
| Details | |
| Mass | 2.35±0.03[6] M☉ |
| Luminosity | 41[6] L☉ |
| Surface gravity (log g) | 4.12[7] cgs |
| Temperature | 10,453±355[7] K |
| Rotational velocity (v sin i) | 246[7] km/s |
| Age | 207[7] Myr |
| Other designations | |
| θ Lep,18 Lep,BD−14°1331,FK5 2466,GC 7742,HD 41695,HIP 28910,HR 2155,SAO 151110[8] | |
| Database references | |
| SIMBAD | data |
Theta Leporis,Latinized from θ Leporis, is a solitary,[9] white-huedstar in the southernconstellation ofLepus. It has anapparent visual magnitude of 4.67,[2] making it bright enough to be viewed with the naked eye. Based upon an annualparallax shift of 18.88 mas as measured from Earth,[1] the system is located roughly 173 light years from theSun. The star made its closest approach about 1.6 million years ago when it came within 29 ly (9.0 pc) of the Sun.[10]
This is an ordinaryA-type main-sequence star with astellar classification of A0 V[3] and an age of about 207 million years.[7] It is rotating rapidly with aprojected rotational velocity of 207 km/s.[7] This is giving the star anoblate shape with anequatorial bulge that is an estimated 10% larger than the polar radius.[11] It has an estimated 2.35[6] times themass of the Sun and is radiating 41[6] times theSun's luminosity from itsphotosphere at aneffective temperature of around 10,453 K.[7]
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