HD 46375 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 46375 | |
| Constellation | Monoceros | |
| Right ascension | (α) | 06h 33m 12.6237s |
| Declination | (δ) | +05° 27′ 46.532″ |
| Distance | 108.9 ly (33.41 pc) | |
| Spectral type | K1IV | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.0398±0.0023 AU |
| Periastron | (q) | 0.0373 AU |
| Apastron | (Q) | 0.0423 AU |
| Eccentricity | (e) | 0.063±0.026 |
| Orbital period | (P) | 3.023573±0.000065 d (0.008277947 y) |
| Orbital speed | (υ) | 144 km/s |
| Argument of periastron |
(ω) | 114±24° |
| Time of periastron | (T0) | 2,451,071.53±0.19 JD |
| Semi-amplitude | (K) | 33.65±0.74 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 0.226±0.019 MJ |
| Discovery information | ||
| Discovery date | March 29, 2000 | |
| Discoverer(s) | Marcy, Butler, Vogt et al. | |
| Discovery method | Radial velocity | |
| Discovery site |  California, USA | |
| Discovery status | Published | |
HD 46375 b is an extrasolar planet located approximately 109 light-years away in the constellation of Monoceros, orbiting the star HD 46375. With 79 Ceti b on March 29, 2000, it was joint first known extrasolar planet less massive than Saturn orbiting a normal star. The planet is a "hot Jupiter", a type of planet that orbits very close to its parent star. In this case the orbital distance is only a tenth that of the planet Mercury. No transit of the planet has been detected, so its inclination must be less than 83°. Because the inclination is unknown, the true mass of the planet is not known.[1]
References
- ↑ Marcy, Geoffrey W.; et al. (2000). "Sub-Saturn Planetary Candidates of HD 16141 and HD 46375". The Astrophysical Journal Letters 536 (1): L43–L46. arXiv:astro-ph/0004326. Bibcode:2000ApJ...536L..43M. doi:10.1086/312723.
- Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
External links
- "Notes for planet HD 46375 b". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-23.
- "HD 46375". Exoplanets. Retrieved 2008-08-23.
Coordinates: 
06h 33m 12.6237s, +05° 27′ 46.532″
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