HD 109749
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Centaurus |
| Right ascension | 12h 37m 16.38s |
| Declination | −40º 48' 43.62″ |
| Apparent magnitude (V) | 8.1 |
| Absolute magnitude (V) | 4.2 |
| Distance | 192 ly (59 pc) |
| Spectral type | G3 IV |
| Other designations | |
HD 109749 is a yellow subgiant star in the constellation Centaurus. It has mass 1.2 solar and have effective temperature of 5610 Kelvins. In 2005 a planet was discovered by Debra Fischer.
[edit] HD 109749 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.0629 AU |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 5.23947±0.00056 d |
| Angular distance | (θ) | 1.07 mas |
| Longitude of periastron |
(ω) | 0° |
| Time of periastron | (T0) | 2453014.91±0.5 JD |
| Semi-amplitude | (K) | 28.58±0.87 m/s |
| Physical characteristics | ||
| Mass | (m) | >0.28±0.016 MJ |
| Discovery information | ||
| Discovery date | 2005 | |
| Discoverer(s) | Fischer et al. | |
| Detection method | RV | |
| Discovery site | USA | |
| Discovery status | Published | |
HD 109749 b is a Saturnain exoplanet that orbits extremely close to the star, taking only 5.24 days to orbit at the distance of 0.063 AU.
[edit] References
- Fischer et al. (2006). "The N2K Consortium. III. Short-Period Planets Orbiting HD 149143 and HD 109749". The Astrophysical Journal 637 (2): 1094 – 1101. doi:.
[edit] External links
- Notes for planet HD 109749 b. The Extrasolar Planets Encyclopaedia.
- HD 109749 – Star in double system. SIMBAD.
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