| |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Lepus |
| Right ascension | 05h12m 17.90190s[2] |
| Declination | −11° 52′ 09.1863″[2] |
| Apparent magnitude (V) | 4.45[3] |
| Characteristics | |
| Spectral type | B7.5 Vn[4] + K7.2 XR? + G8 Ve[5] |
| U−B color index | −0.40[3] |
| B−V color index | −0.10[3] |
| Astrometry | |
| Radial velocity (Rv) | +23.50[6] km/s |
| Proper motion (μ) | RA: +24.39[2] mas/yr Dec.: −31.02[2] mas/yr |
| Parallax (π) | 14.07 ± 0.16 mas[2] |
| Distance | 232 ± 3 ly (71.1 ± 0.8 pc) |
| Absolute magnitude (MV) | 0.01[7] |
| Details | |
| ι Lep A | |
| Mass | 3.37±0.02[8] M☉ |
| Luminosity | 153[8] L☉ |
| Surface gravity (log g) | 4.25[9] cgs |
| Temperature | 13,781±469[9] K |
| Rotational velocity (v sin i) | 185[9] km/s |
| Age | 94[7] Myr |
| Other designations | |
ι Lep, 3 Lep, BD−12° 1095, GC 6374, HD 33802, HIP 24244, HR 1696, SAO 150223, CCDM J05123-1152A, WDS J05123-1152A[10] | |
| Database references | |
| SIMBAD | data |
Iota Leporis (ι Leporis) is a triple star[5] system in the southern constellationofLepus. It is visible to the naked eye as a point source of blue-white light with an apparent visual magnitude of 4.45.[3] Based upon an annual parallax shift of 14.07 mas as measured from Earth,[2] the system is located roughly 232 light years from the Sun.
The primary, designated component A, is a B-type main-sequence star with a stellar classification of B7.5 Vn,[4] where the 'n' suffix indicates "nebulous" absorption lines caused by rotation. It is about 94[7] million years old and has a high rate of spin with a projected rotational velocity of 185 km/s.[9] With an estimated 3.4[8] times the mass of the Sun, it is radiating 153[8] times the Sun's luminosity from its photosphere at an effective temperature of around 13,781 K.[9]
There is a close companion that is a source of X-ray emission. Most likely this star has at least 1.05 times the mass of the Sun.[7] The third component, AM Leporis, is a BY Draconis variable[11] of apparent magnitude 9.92,[3] and spectral type G8Ve[12] at an angular separation of 12.7".[13]
