| Observation data Epoch J2000.0 (ICRS) Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Leo |
| Right ascension | 11h 46m 23.535s[1] |
| Declination | +14° 07′ 26.35″[1] |
| Apparent magnitude (V) | 8.69[2] |
| Characteristics | |
| Spectral type | K0[3] III[2] |
| U−B color index | 0.69[3] |
| B−V color index | 1.02[2] |
| Astrometry | |
| Radial velocity (Rv) | −11.99±0.03[2] km/s |
| Proper motion (μ) | RA: −7.371[1] mas/yr Dec.: 7.639[1] mas/yr |
| Parallax (π) | 2.8571 ± 0.1135 mas[1] |
| Distance | 1,140 ± 50 ly (350 ± 10 pc) |
| Absolute magnitude (MV) | 0.74[2] |
| Details[2] | |
| 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 | |
| Database references | |
| SIMBAD | data |
HD 102272 is a star in the equatorial constellation of Leo. With an apparent visual magnitude of 8.69,[2] 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.[2] As of 2008[update], two extrasolar planets are known to orbit the star.[5]
This is an evolved giant star[2] with a stellar classification of K0.[3] 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.[2]
GaiaEDR3 was invoked but never defined (see the help page).Deka-Szymankiewicz_et_al_2018 was invoked but never defined (see the help page).Niedzielski2009 was invoked but never defined (see the help page).sb was invoked but never defined (see the help page).EPE was invoked but never defined (see the help page).