| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 03h 50m 22.9678s[1] |
| Declination | +17° 28′ 34.9254″[1] |
| Apparent magnitude (V) | 7.50[2] |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G2V[3] |
| B−V color index | 0.653±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | −9.36±0.08[2] km/s |
| Proper motion (μ) | RA: 113.433 mas/yr[1] Dec.: −251.101 mas/yr[1] |
| Parallax (π) | 21.4719 ± 0.0241 mas[1] |
| Distance | 151.9 ± 0.2 ly (46.57 ± 0.05 pc) |
| Absolute magnitude (MV) | 4.16[2] |
| Details | |
| Mass | 1.14±0.02[4] M☉ |
| Radius | 1.28±0.03[4] R☉ |
| Luminosity | 1.81±0.01[4] L☉ |
| Surface gravity (log g) | 4.27±0.02[4] cgs |
| Temperature | 5,917±52[4] K |
| Metallicity [Fe/H] | 0.206±0.030[5] dex |
| Rotational velocity (v sin i) | 2.39±0.050[5] km/s |
| Age | 4.8±0.8[4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 24040 is a star with two orbiting exoplanets in the equatorial constellation of Taurus. The star is too faint to be viewed with the naked eye, having an apparent visual magnitude of 7.50.[2] Based on parallax measurements, it is located at a distance of 152 light years. However, it is drifting closer to the Sun with a radial velocity of −9.4 km/s.[2]
This is a G-type main-sequence star with a stellar classification of G2V.[3] It is a metal-rich star with an age of around 4.8 billion years. The star has 14% more mass than the Sun and 128% of the Sun's radius. It is radiating 1.8 times the luminosity of the Sun from its photosphere at an effective temperature of 5,917 K.[4] The star is spinning slowly with a projected rotational velocity of 2.4 km/s.[5]
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