BD+03 2562
Low-metallicity star
From Wikipedia, the free encyclopedia
BD+03 2562 is a very-low-metallicity star[3] in the constellation of Virgo. It is located about 8,500 light-years (2,600 parsecs) from Earth.
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Virgo |
| Right ascension | 11h 50m 15.5527s[1] |
| Declination | +02° 45′ 36.472″[1] |
| Apparent magnitude (V) | 9.58[1] |
| Characteristics | |
| Spectral type | K2[2] |
| B−V color index | 1.27[1] |
| Astrometry | |
| Radial velocity (Rv) | 50.88 ± 0.06[3] km/s |
| Distance | 8539 ± 1840 ly (2618 ± 564[3] pc) |
| Absolute magnitude (MV) | −2.51[3] |
| Details[3] | |
| Mass | 1.14 ± 0.25 M☉ |
| Radius | 32.35 ± 8.82 R☉ |
| Luminosity | 501 L☉ |
| Surface gravity (log g) | 1.89 ± 0.10 cgs |
| Temperature | 4095 ± 20 K |
| Metallicity [Fe/H] | −0.71 ± 0.09 dex |
| Rotational velocity (v sin i) | 2.7 ± 0.3 km/s |
| Age | 5.25 Gyr |
| Other designations | |
| TYC 276-507-1, 2MASS J11501555+0245365[2] | |
| Database references | |
| SIMBAD | data |
Planetary system
The star is orbited by a superjovian exoplanet, BD+03 2562 b, which was discovered in 2017 by a radial velocity method.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination (°) |
Radius |
|---|---|---|---|---|---|---|
| b | >6.4±1.3 MJ | 1.3±0.1 | 481.9+2.7 −2.8 |
0.20+0.12 −0.08 |
— | — |
