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HD 181433 d 
Summary
HD 181433 d is an extrasolar planet located approximately 87 light years away[3] in the constellation of Pavo, orbiting the star HD 181433. This planet has a minimum mass of 0.54 Jupiter mass and takes 2172 days to orbit the star. The average orbital distance is 3.00 AU. At periastron distance, it will have distance from the star similar to Mars’ distance from the Sun at 1.56 AU. At apastron, the distance is 4.44 AU. These corresponds to the orbital eccentricity of 0.48.[2]
| Discovery | |
|---|---|
| Discovered by | Bouchy et al.[1] |
| Discovery site |  La Silla Observatory |
| Discovery date | December 9, 2008[1] |
| Doppler spectroscopy | |
| Orbital characteristics | |
| Apastron | 4.44 AU (664,000,000 km) |
| Periastron | 1.56 AU (233,000,000 km) |
| 3.00 AU (449,000,000 km)[2] | |
| Eccentricity | 0.48 ± 0.05[2] |
| 2172 ± 158[2] d 5.947 y | |
Average orbital speed | 15.1 |
| 2452154 ± 194[2] | |
| -30 ± 13[2] | |
| Star | HD 181433 |
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 d e f Schneider, J. "Notes for Planet HD 181433 d". Extrasolar Planets Encyclopaedia. Retrieved 2008-12-15.
- ^ van Leeuwen, F. (2007). "HIP 95152". Hipparcos, the New Reduction: The Astrometric Catalogue. Retrieved 2008-12-15.
External links edit
- "HD 181433 d". Exoplanets. Archived from the original on 2012-03-18. Retrieved 2008-12-15.