HD 130322
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| Observation data Epoch 2000 |
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|---|---|
| Constellation | Virgo |
| Right ascension | 14h 47m 32s 43.8j |
| Declination | -0° 16' 53" 18.6’’’ |
| Apparent magnitude (V) | 8.05 |
| Distance | 97.02 ly (29.76 pc) |
| Spectral type | K0V |
| Other designations | |
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BD+00°3243, HIP 72339
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HD 130322 is an 8th magnitude star in the constellation of Virgo. It is an orange dwarf, a type of star somewhat dimmer and cooler than our Sun. Spectral type of the star is K0 V. It can only be seen with binoculars or telescope. Being almost exactly on the celestial equator the star is visible everywhere in the world except for the North Pole.
In 2000 an extrasolar planet was discovered orbiting the star.
[edit] HD 130322 b
| Orbital elements | ||
|---|---|---|
| Semi-major axis | (a) | 0.088 AU |
| Eccentricity | (e) | 0.048 |
| Orbital period | (P) | 10.724 d |
| Inclination | (i) | ?° |
| Longitude of periastron |
(ω) | 205 ± 22° |
| Time of periastron | (τ) | 2451383.93 ± 0.65 JD |
| Physical characteristics | ||
| Mass | >1.08 MJ | |
| Radius | ? RJ | |
| Density | ? kg/m³ | |
| Temperature | ? K | |
| Discovery | ||
| Discovery date | 2000 | |
| Detection method(s) | ||
| Discoverer(s) | Udry, Mayor, Pepe et al. |
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HD 130322 b is a planet with a minimum mass slightly more than that of Jupiter. It orbits the star in a very close orbit distance being only a quarter that of Mercury from the Sun. It is thus a so-called "hot Jupiter". The planet orbits the star every 10 days 17 hours in a very regular orbit.
[edit] References
- Udry et al. (2000). "The CORALIE survey for southern extra-solar planets II. The short-period planetary companions to HD 75289 and HD 130322". Astronomy and Astrophysics 356: 590-598.
[edit] External links
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