HD 40235
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lepus[1] |
| Right ascension | 05h 56m 34.4388s[2] |
| Declination | −23° 12′ 55.121″[2] |
| Apparent magnitude (V) | 6.37[1] |
| Characteristics | |
| Spectral type | K0III[1] |
| B−V color index | 1.068±0.002[1] |
| Astrometry | |
| Radial velocity (Rv) | −4.64±0.12[2] km/s |
| Proper motion (μ) | RA: +13.817 mas/yr[2] Dec.: +29.448 mas/yr[2] |
| Parallax (π) | 6.8612±0.0187 mas[2] |
| Distance | 475 ± 1 ly (145.7 ± 0.4 pc) |
| Absolute magnitude (MV) | +0.69[1] |
| Details | |
| Mass | 1.51[3] M☉ |
| Radius | 11.6[4] R☉ |
| Luminosity | 60[4] L☉ |
| Surface gravity (log g) | 2.78±0.03[5] cgs |
| Temperature | 4,853±22[5] K |
| Metallicity [Fe/H] | −0.10±0.01[5] dex |
| Other designations | |
| CD−23°3263, HD 40235, HIP 28118, HR 2090, TYC 6491-1059-1[6] | |
| Database references | |
| SIMBAD | data |
HD 40235 is a star in the constellation Lepus. At an apparent magnitude of 6.37, it is faintly visible to the naked eye in locations far from light pollution. Parallax measurements give a distance of 475 light-years (145.7 parsecs).
The spectrum of this star matches a spectral class of K0III,[1] with the luminosity class III indicating it is a giant that has exhausted the hydrogen at its core. The star has a mass 1.51 times the mass of the Sun[3] and has expanded to 11.6 times the Sun's radius. It now radiates 60 times the Sun's luminosity from its photosphere[4] at an effective temperature of 4,853 K.[5] This temperature give it the orange hue typical of a K-type star.[7]
