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HD 4203 b
Orbiting HD 4203, discovered in 2001 (7506) by W. M. Keck Observatory via the Radial Velocity method.
Planet
| Radius | Unknown |
| Mass | 708.76 M⊕ |
| Orbital period | 431.88 Earth days (~1.2 Earth years) |
| Orbital eccentricity | 0.520 |
| Equilibrium temperature | Unknown |
Host star — HD 4203
| Temperature | 5596 K (5323 °C) |
| Radius | 1.42 R☉ |
| Mass | 1.25 M☉ |
Location
| Distance from Earth | 81.4 pc (~265 light-years) |
| Right ascension / Declination | 11.1722 / 20.4484 |
Last refreshed 2026-09-14 from NASA's Exoplanet Archive.