TOI-5624 c
| Discovery | |
|---|---|
| Discovered by | Andrea Bonfant et al. |
| Discovery site | Transiting Exoplanet Survey Satellite |
| Discovery date | April 22, 2026 |
| Transit | |
| Orbital characteristics | |
| 0.07374+0.00072 −0.00075 AU | |
| Eccentricity | 0 (fixed) |
| 7.885385±0.000018 d | |
| Inclination | 89.58+0.28 −0.27 |
| 90 (fixed) | |
| Semi-amplitude | 1.70+0.69 −0.68 m/s |
| Star | TOI-5624 |
| Physical characteristics | |
| 2.474±0.042 R🜨 | |
| Mass | 4.8±1.9 M🜨 |
Mean density | 1.72+0.70 −0.69 g/cm3 |
| Temperature | 857 ± 11 K (583.9 ± 11.0 °C; 1,082.9 ± 19.8 °F) |
TOI-5624 c is the second closest of the discovered exoplanets orbiting the star TOI-5624, located approximately 331 light-years from Earth in the constellation Ursa Major. The planet was confirmed in April 2026 using the transit method.[1][2]
Characteristics
Physical characteristics
| Neptune | TOI-5624 с |
|---|---|
The planet is classified as a sub-Neptune, with a mass of 4.8±1.9 M🜨 determined by the radial velocity method, and a radius of 2.474±0.042 R🜨 determined by the CHEOPS telescope, with an uncertainty of less than 1.7%.[1][2] The object's average density is 1.72+0.70
−0.69 g/cm3.[1][2] Such a low value indicates a higher proportion of volatiles or a hydrogen-helium mixture in its composition.[1][2]
Orbit
The orbital period around its host star is approximately 7.885385±0.000018 Earth days. The semi-major axis of the orbit is estimated to be 0.07374+0.00072
−0.00075 AU.[1][2] The equilibrium temperature is approximately 858 K, or 584 °C.[1][2]
See also
References
- ^ a b c d e f Bonfanti, A.; et al. (2026-04-21). "The multi-planet system TOI-5624: Four transiting sub-Neptunes with an outer companion revealed by transit-timing variations". arXiv:2604.15035 [astro-ph.EP].
- ^ a b c d e f Cowing, Keith (2026-04-19). "The Multi-planet System TOI-5624: Four Transiting Sub-Neptunes With An Outer Companion Revealed By Transit-timing Variations". Astrobiology.com. Retrieved 2026-04-19.
External links
- Martin, Pierre-Yves (2026). "Planet TOI-5624 c". exoplanet.eu. Retrieved 2026-04-17.