HD 52265
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| Observation data Equinox 2000 |
|
|---|---|
| Constellation | Monoceros |
| Right ascension | 7h 0m 18.04s |
| Declination | -5° 22' 1.78" |
| Apparent magnitude (V) | 6.301 |
| Distance | 91.50 ly (28.07 pc) |
| Spectral type | G0V |
| Other designations | |
|
BD-05°1910, HR 2622,
HIP 33719 |
|
HD 52265 is a 6th magnitude star in the constellation of Monoceros. Like our Sun, it is a yellow dwarf. However, it is 18% more massive and almost twice as luminous than our Sun. Age of the star is 4,000 million years.
In 2000 the California and Carnegie Planet Search team announced the discovery of an extrasolar planet orbiting the star. Like most planet discoveries so far, it was detected by using the radial velocity method.
[edit] HD 52265 b
| Extrasolar planet | Lists of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.504±0.029 AU |
| Eccentricity | (e) | 0.325±0.065 |
| Orbital period | (P) | 119.290±0.086 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 243±15° |
| Time of periastron | (τ) | 2,450,833.7±4.2 JD |
| Physical characteristics | ||
| Mass | (m) | >1.09±0.11 MJ |
| Radius | (r) | ? RJ |
| Density | (ρ) | ? kg/m3 |
| Temperature | (T) | ? K |
| Discovery information | ||
| Discovery date | 2000 | |
| Discoverer(s) | Butler, Vogt, Marcy et al. |
|
| Detection method | Radial velocity | |
| Discovery status | Published | |
The planet, classified as HD 52265 b, is a gas giant with a minimum mass slightly more than that of Jupiter. Mean distance between the planet and the star is half that of Earth from the Sun. The orbit is eccentric, at periastron the planet slightly closer the star than Mercury is from the Sun, and at apoastron it is twice as far.
[edit] References
- Butler et al. (2000). "Planetary Companions to the Metal-rich Stars BD -10°3166 and HD 52265". The Astrophysical Journal 545: 504-511.
- Naef et al. (2001). "The CORALIE survey for southern extrasolar planets V. 3 new extrasolar planets". Astronomy and Astrophysics 375: 205-218.
- Butler, R. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646: 505 – 522. (web Preprint)
[edit] External links
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