HD 37605 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 37605 | |
| Constellation | Orion | |
| Right ascension | (α) | 05h 40m 01.729s[1] |
| Declination | (δ) | +06° 03′ 38.08″[1] |
| Distance | 143 ± 7[1] ly (44 ± 2[1] pc) | |
| Spectral type | K0V | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.261 AU |
| Periastron | (q) | 0.0686 AU |
| Apastron | (Q) | 0.453 AU |
| Eccentricity | (e) | 0.737 ± 0.01 |
| Orbital period | (P) | 54.23 ± 0.23 d (0.1485 y) |
| Orbital speed | (υ) | 52.5 km/s |
| Argument of periastron |
(ω) | 211.6 ± 1.7° |
| Time of periastron | (T0) | 2452994.27 ± 0.45 JD |
| Semi-amplitude | (K) | 262.9 ± 5.5 m/s |
| Physical characteristics | ||
| Mass | (m) | >2.84 MJ (>903 M⊕) |
| Discovery information | ||
| Discovery date | 8 July 2004 | |
| Discoverer(s) | Cochran et al.[2] | |
| Discovery method | doppler spectroscopy | |
| Discovery site | Hobby-Eberly Telescope | |
| Discovery status | Published[2] | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 37605 b is an extrasolar planet that has nearly three times more mass than Jupiter. It orbits close to the star, taking 54 days to revolve around the parent star HD 37605. Its orbit is highly eccentric, around 74%. Distance from HD 37605 ranges from 0.069 to 0.453 astronomical units.
It is the first planet found by Hobby-Eberly Telescope (HET) in July 2004.[2]
In a simulation, HD 37605 b's orbit "sweeps clean" most test particles within 0.5 AU; leaving only asteroids "in low-eccentricity orbits near the known planet’s apastron distance, near the 1:2 mean-motion resonance" with oscillating eccentricity up to 0.06, and also at 1:3 with oscillating eccentricity up to 0.4.[3]
References
- 1 2 3 4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- 1 2 3 Cochran, Michael; et al. (2004). "The First Hobby-Eberly Telescope Planet: A Companion to HD 37605". The Astrophysical Journal Letters 611 (2): L133–L136. arXiv:astro-ph/0407146. Bibcode:2004ApJ...611L.133C. doi:10.1086/423936.
- ↑ Wittenmyer; Endl, Michael; Cochran, William D.; Levison, Harold F. (2007). "Dynamical and Observational Constraints on Additional Planets in Highly Eccentric Planetary Systems". The Astronomical Journal 134 (3): 1276–1284. arXiv:0706.1962. Bibcode:2007AJ....134.1276W. doi:10.1086/520880.
External links
- "HD 37605". Exoplanets.
Coordinates: 
05h 40m 01.7296s, +06° 03′ 38.085″
This article is issued from Wikipedia - version of the Monday, March 07, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.