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TOI-521 b
Orbiting TOI-521, discovered in 2025 (7530) by Transiting Exoplanet Survey Satellite (TESS) via the Transit method.
Planet
| Radius | 1.98 R⊕ |
| Mass | 5.30 M⊕ |
| Orbital period | 1.54 Earth days (~0.0 Earth years) |
| Orbital eccentricity | 0.000 |
| Equilibrium temperature | 794 K (521 °C) |
Host star — TOI-521
| Temperature | 3544 K (3271 °C) |
| Radius | 0.42 R☉ |
| Mass | 0.42 M☉ |
Location
| Distance from Earth | 60.9 pc (~199 light-years) |
| Right ascension / Declination | 123.3443 / 12.2221 |
Last refreshed 2026-09-13 from NASA's Exoplanet Archive.