HD 4203 b
| Discovery | |
|---|---|
| Discovered by | et al. |
| Discovery site | Keck telescope |
| Discovery date | 15 October 2001 |
| radial velocity | |
| Orbital characteristics | |
| Apastron | 3.14 AU (470,000,000 km) |
| Periastron | 0.996 AU (149,000,000 km) |
| 2.07 ± 0.13 AU (310,000,000 ± 19,000,000 km) | |
| Eccentricity | 0.519 ± 0.027 |
| 431.88 ± 0.85 d 1.1824 y | |
| 2,451,918.9 ± 2.7 | |
| 329.1 ± 3.1 | |
| Semi-amplitude | 60.3 ± 2.2 |
| Star | HD 4203 |
| Physical characteristics | |
| Mass | >1.16 MJ (>369 MEarth) |
HD 4203 b is an exoplanet more massive than Jupiter. It orbits two times further from the star than Earth to the Sun. The planet takes 1.1824 year to orbit the star very eccentrically from 1.00 AU to 3.14 AU. The planet was discovered by using the Keck telescope.[1][2]
See also[]
References[]
- ^ Vogt, Steven S.; et al. (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal. 568 (1): 352–362. arXiv:astro-ph/0110378. Bibcode:2002ApJ...568..352V. doi:10.1086/338768.
- ^ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
External links[]
- "HD 4203". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-29.
Coordinates: 
00h 44m 41.2021s, +20° 26′ 56.138″
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Categories:
- Exoplanets discovered in 2001
- Giant planets
- Pisces (constellation)
- Exoplanets detected by radial velocity
- Exoplanet stubs