HD 181433 c
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Extrasolar planet in the constellation Pavo
| Discovery | |
|---|---|
| Discovered by | Bouchy et al.[1] |
| Discovery site | La Silla Observatory, Chile[2] |
| Discovery date | June 16, 2008[2] |
| Doppler spectroscopy [2] | |
| Orbital characteristics | |
| Apastron | 2.25 AU (337 million km) |
| Periastron | 1.27 AU (190 million km) |
| 1.76 AU (263 million km)[3] | |
| Eccentricity | 0.28 ± 0.02[3] |
| 962 ± 15[3] d 2.63 y | |
Average orbital speed | 20.0 |
| 2,453,235 ± 7.3[3] | |
| 21.4 ± 3.2[3] | |
| Star | HD 181433 |
HD 181433 c is an extrasolar planet located approximately 87 light-years away[4] in the constellation of Pavo, orbiting the star HD 181433. This planet is at least 0.64 times as massive as Jupiter and takes 962 days to orbit the star at an orbital distance of 1.76 astronomical units (AU), or 263 gigametres (Gm). The orbit is eccentric, however, and ranges from 1.27 AU (190 Gm) at periastron to 2.25 AU (337 Gm) at apastron.[3] François Bouchy et al. have published a paper detailing the HD 181433 planetary system in Astronomy and Astrophysics .[1]
References
[edit ]- ^ a b Bouchy, François; Mayor, Michel; Lovis, Christophe; Udry, Stéphane; Benz, Willy; Bertaux, Jean-Loup; Delfosse, Xavier; Mordasini, Christoph; Pepe, Francesco; Queloz, Didier; Ségransan, Damien (2009). "The HARPS Search for Southern Extra-solar Planets. XVII. Super-Earth and Neptune-mass Planets in Multiple Planet Systems HD 47186 and HD 181433". Astronomy and Astrophysics. 496 (2): 527–31. arXiv:0812.1608 . Bibcode:2009A&A...496..527B. doi:10.1051/0004-6361:200810669. S2CID 117778593.
- ^ a b c "A Trio of Super-Earths" (Press release). ESO. 2008年06月16日. Archived from the original on 2008年10月07日. Retrieved 2008年10月02日.
- ^ a b c d e f Schneider, J. "Notes for Planet HD 181433 c". Extrasolar Planets Encyclopaedia . Retrieved 2008年10月02日.
- ^ van Leeuwen, F. (2007). "HIP 95152". Hipparcos, the New Reduction: The Astrometric Catalogue. Retrieved 2008年10月02日.
External links
[edit ]- "HD 181433 c". Exoplanets. Archived from the original on 2012年03月04日. Retrieved 2008年11月09日.
