HD 24040
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. 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.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 03h 50m 22.9678s |
| Declination | +17° 28′ 34.9254″ |
| Apparent magnitude (V) | 7.50 |
| Characteristics | |
| Evolutionary stage | Main sequence |
| Spectral type | G2V |
| B−V color index | 0.653±0.003 |
| Astrometry | |
| Radial velocity (Rv) | −9.36±0.08 km/s |
| Proper motion (μ) | RA: 113.433 mas/yr Dec.: −251.101 mas/yr |
| Parallax (π) | 21.4719 ± 0.0241 mas |
| Distance | 151.9 ± 0.2 ly (46.57 ± 0.05 pc) |
| Absolute magnitude (MV) | 4.16 |
| Details | |
| Mass | 1.14±0.02 M☉ |
| Radius | 1.28±0.03 R☉ |
| Luminosity | 1.81±0.01 L☉ |
| Surface gravity (log g) | 4.27±0.02 cgs |
| Temperature | 5,917±52 K |
| Metallicity [Fe/H] | 0.206±0.030 dex |
| Rotational velocity (v sin i) | 2.39±0.050 km/s |
| Age | 4.8±0.8 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is a G-type main-sequence star with a stellar classification of G2V. 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. The star is spinning slowly with a projected rotational velocity of 2.4 km/s.
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