| Discovery | |
|---|---|
| Discovered by | Vogt 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 ME) |
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 Steve Vogt using the Keck telescope.[1][2]