HD 33283 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 33283 | |
| Constellation | Lepus | |
| Right ascension | (α) | 05h 08m 01.0118s |
| Declination | (δ) | –26° 47′ 50.896″ |
| Apparent magnitude | (mV) | 8.05 |
| Distance | 283.37 ly (86.88 pc) | |
| Spectral type | G4V | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.145 ± 0.006 AU (21.7 Gm) |
| Periastron | (q) | 0.075 AU (11.2 Gm) |
| Apastron | (Q) | 0.215 AU (32.2 Gm) |
| Eccentricity | (e) | 0.48 ± 0.05 |
| Orbital period | (P) | 18.179 ± 0.007 d (0.049771 y) |
| Orbital speed | (υ) | 86.5 km/s |
| Argument of periastron |
(ω) | 155.8 ± 8.0° |
| Time of periastron | (T0) | 2453017.6 ± 0.3 JD |
| Semi-amplitude | (K) | 25.2 ± 2.0 m/s |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 0.33 MJ |
| Discovery information | ||
| Discovery date | April 17, 2006 | |
| Discoverer(s) | Johnson et al. | |
| Discovery method | Doppler spectroscopy | |
| Discovery site |  United States | |
| Discovery status | Published | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 33283 b is an exoplanet orbiting around HD 33283. The mass of the planet is about 1/3 that of Jupiter or about the same as Saturn. However, the planet orbits very close to the star, taking only 18 days to complete its orbit with average speed of 86.5 km/s. Despite of this, its orbit is eccentric, bringing it as close as 0.075 AU to the star and as far away as 0.215 AU.[1]
See also
References
- ↑ Johnson, John Asher; et al. (2006). "The N2K Consortium. VI. Doppler Shifts without Templates and Three New Short-Period Planets". The Astrophysical Journal 647 (1): 600–611. arXiv:astro-ph/0604348. Bibcode:2006ApJ...647..600J. doi:10.1086/505173.
External links
- "HD 33283". Exoplanets.
Coordinates: 
05h 08m 01.0118s, −26° 47′ 50.896″
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