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HAT-P-9 b
Orbiting HAT-P-9, discovered in 2008 (7513) by HATNet via the Transit method.
Planet
| Radius | 15.61 R⊕ |
| Mass | 238.05 M⊕ |
| Orbital period | 3.92 Earth days (~0.0 Earth years) |
| Orbital eccentricity | 0.084 |
| Equilibrium temperature | 1540 K (1267 °C) |
Host star — HAT-P-9
| Temperature | 6350 K (6077 °C) |
| Radius | 1.34 R☉ |
| Mass | 1.28 M☉ |
Location
| Distance from Earth | 455.2 pc (~1485 light-years) |
| Right ascension / Declination | 110.1685 / 37.1406 |
Last refreshed 2026-09-14 from NASA's Exoplanet Archive.