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HD 1397 b
Orbiting HD 1397, discovered in 2018 (7523) by Transiting Exoplanet Survey Satellite (TESS) via the Transit method.
Planet
| Radius | 11.50 R⊕ |
| Mass | 131.90 M⊕ |
| Orbital period | 11.54 Earth days (~0.0 Earth years) |
| Orbital eccentricity | 0.251 |
| Equilibrium temperature | 1228 K (955 °C) |
Host star — HD 1397
| Temperature | 5521 K (5248 °C) |
| Radius | 2.34 R☉ |
| Mass | 1.32 M☉ |
Location
| Distance from Earth | 79.6 pc (~260 light-years) |
| Right ascension / Declination | 4.4472 / -66.3589 |
Last refreshed 2026-09-13 from NASA's Exoplanet Archive.