BD+48 740
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 02h 42m 58.21780s |
| Declination | +48° 55′ 48.2155″ |
| Characteristics | |
| Spectral type | K3III |
| Astrometry | |
| Radial velocity (Rv) | -5.60 ± 0.51 km/s |
| Proper motion (μ) | RA: -5.94 mas/yr Dec.: -2.02 mas/yr |
| Parallax (π) | 1.36±1.13 mas |
| Distance | approx. 2,000 ly (approx. 700 pc) |
| Details | |
| Mass | 1.09±0.16 M☉ |
| Radius | 10.33±1.81 R☉ |
| Luminosity | 43.7 L☉ |
| Surface gravity (log g) | 2.48±0.04 cgs |
| Temperature | 4534±8 K |
| Metallicity [Fe/H] | -0.13±0.06 dex |
| Rotational velocity (v sin i) | <2.9 km/s |
| Other designations | |
| BD+48 740, AG+48 308, GSC 03304-00090, HIC 12684, HIP 12684, 2MASS J02425822+4855483, PPM 45405, SAO 38272, TYC 3304-90-1 | |
| Database references | |
| SIMBAD | data |
BD+48 740 is a giant star suspected of having recently engulfed one of its planets. The star's atmosphere has an overabundance of lithium, a metal that is destroyed by nuclear reactions in stars.