HD 102272
| Observation data Epoch J2000.0 (ICRS) Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Leo |
| Right ascension | 11h 46m 23.535s |
| Declination | +14° 07′ 26.35″ |
| Apparent magnitude (V) | 8.69 |
| Characteristics | |
| Spectral type | K0 III |
| U−B color index | 0.69 |
| B−V color index | 1.02 |
| Astrometry | |
| Radial velocity (Rv) | −11.99±0.03 km/s |
| Proper motion (μ) | RA: −7.371 mas/yr Dec.: 7.639 mas/yr |
| Parallax (π) | 2.8571±0.1135 mas |
| Distance | 1,140 ± 50 ly (350 ± 10 pc) |
| Absolute magnitude (MV) | 0.74 |
| Details | |
| Mass | 1.01±0.122 M☉ |
| Radius | 8.02±2.14 R☉ |
| Luminosity | 25 L☉ |
| Surface gravity (log g) | 2.57±0.04 cgs |
| Temperature | 4,750±10 K |
| Metallicity [Fe/H] | −0.49±0.06 dex |
| Rotational velocity (v sin i) | 2.10±0.90 km/s |
| Age | 8.13 Gyr |
| Other designations | |
| BD+14 2434, HD 102272, HIP 57428, SAO 99784 | |
| Database references | |
| SIMBAD | data |
HD 102272 is a star in the equatorial constellation of Leo. With an apparent visual magnitude of 8.69, it is too faint to be visible to the naked eye. The star is located at a distance of approximately 1,140 light years based on parallax measurements, but is drifting closer to the Sun with a radial velocity of −12 km/s. As of 2008, two extrasolar planets are known to orbit the star.
This is an evolved giant star with a stellar classification of K0. It is an estimated eight billion years old and has expanded to eight times the Sun's radius. The star has about the same mass as the Sun and is spinning with a projected rotational velocity of 2 km/s. It is radiating 25 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,750 K.