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55 Cnc e
Orbiting 55 Cnc, discovered in 2004 (7509) by McDonald Observatory via the Radial Velocity method.
Planet
| Radius | 1.88 R⊕ |
| Mass | 7.99 M⊕ |
| Orbital period | 0.74 Earth days (~0.0 Earth years) |
| Orbital eccentricity | 0.050 |
| Equilibrium temperature | Unknown |
Host star — 55 Cnc
| Temperature | 5172 K (4899 °C) |
| Radius | 0.94 R☉ |
| Mass | 0.91 M☉ |
Location
| Distance from Earth | 12.6 pc (~41 light-years) |
| Right ascension / Declination | 133.1468 / 28.3298 |
Last refreshed 2026-09-13 from NASA's Exoplanet Archive.