Astronomy:HD 24040 b
| Discovery | |
|---|---|
| Discovered by | Butler et al. |
| Discovery site | California, USA |
| Discovery date | March 12, 2006 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| 4.637±0.067 AU | |
| Eccentricity | 0.047±0.020[1] |
| Orbital period | 3490±25[1] d |
| astron|astron|helion}} | 2456670±240[1] |
| 67±24[1] | |
| Semi-amplitude | 51.8±1.6[1] |
| Star | HD 24040 |
HD 24040 b is a long-period exoplanet taking approximately 3500 days to orbit at 4.6 astronomical units in an almost circular orbit. It has a minimum mass 4 times that of Jupiter.[1]
Discovery
HD 24040b was discovered in 2006 based on observations made at the W. M. Keck Observatory in Hawaii. However, because the observations covered less than one complete orbit there were only weak constraints on the period and mass.[2] The first reliable orbit for HD 24040b was obtained by astronomers at Haute-Provence Observatory in 2012 who combined the keck measurements with ones from the SOPHIE and ELODIE spectrographs.[3] The most recent orbit published in 2015 added additional keck measurements and refined the orbital parameters.[1]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Feng, Y. Katherina et al. (2015). "The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets". The Astrophysical Journal 800 (1): 22. doi:10.1088/0004-637X/800/1/22. Bibcode: 2015ApJ...800...22F.
- ↑ Wright, J. T. et al. (2007). "Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars". The Astrophysical Journal 657 (1): 533–545. doi:10.1086/510553. Bibcode: 2007ApJ...657..533W.
- ↑ Boisse, Isabelle; Pepe, Francesco; Perrier, Christian; Queloz, Didier; Bonfils, Xavier; Bouchy, François; Santos, Nuno C.; Arnold, Luc et al. (2012), "The SOPHIE search for northern extrasolar planets V. Follow-up of ELODIE candidates: Jupiter-analogs around Sun-like stars", Astronomy and Astrophysics 545: A55, doi:10.1051/0004-6361/201118419, Bibcode: 2012A&A...545A..55B, http://www.aanda.org/articles/aa/full_html/2012/09/aa18419-11/aa18419-11.html
External links
Coordinates: 
03h 50m 22.9681s, +17° 28′ 34.919″
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