BD+48 740
Giant star in the constellation Perseus / From Wikipedia, the free encyclopedia
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.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 02h 42m 58.21780s[1] |
Declination | +48° 55′ 48.2155″[1] |
Characteristics | |
Spectral type | K3III[2] |
Astrometry | |
Radial velocity (Rv) | -5.60 ± 0.51[3] km/s |
Proper motion (μ) | RA: -5.94[1] mas/yr Dec.: -2.02[1] mas/yr |
Parallax (π) | 1.36 ± 1.13 mas[1] |
Distance | approx. 2,000 ly (approx. 700 pc) |
Details[4] | |
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 | |
Database references | |
SIMBAD | data |
Close