| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | BD+14°4559 | |
| Constellation | Pegasus | |
| Right ascension | (α) | 21h 13m 35.9917s |
| Declination | (δ) | +14° 41′ 21.794″ |
| Distance | 163 ± 13 ly (50 ± 4 pc) |
|
| Spectral type | K2V | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.777 AU |
| Periastron | (q) | 0.552 AU |
| Apastron | (Q) | 1.002 AU |
| Eccentricity | (e) | 0.29 ± 0.03 |
| Orbital period | (P) | 268.94 ± 0.99 d (0.7363 ± 0.0027 y) |
| Argument of periastron |
(ω) | 87.64 ± 7.87° |
| Time of periastron | (T0) | 53293.71 ± 6.35 JD |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 1.47 MJ |
| Discovery information | ||
| Discovery date | June 10, 2009 | |
| Discoverer(s) | Niedzielski et al. | |
| Detection method | radial velocity | |
| Discovery site | La Silla Observatory | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia |
data | |
| SIMBAD | data | |
BD+14°4559 b is an extrasolar planet located approximately 163 light years away in the constellation of Pegasus, orbiting the 10th magnitude K-type main sequence star BD+14°4559. It has mass half more than Jupiter and takes 74% of Earth year to orbit the star. This planet was discovered on June 10, 2009 using the Hobby-Eberly Telescope.