Astronomy: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 astronomical unit|AU | |
| Eccentricity | 0 (fixed) |
| Orbital period | 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 | |
| Mean radius | 2.474±0.042 R🜨 |
| Mass | 4.8±1.9 M🜨 |
| Mean density | 1.72+0.70 −0.69 g/cm3 |
| Physics | 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 astronomical unit|AU.[1][2] The equilibrium temperature is approximately 858 K, or 584 °C.[1][2]
See also
- List of exoplanets discovered in 2026
- Methods of detecting exoplanets
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "The multi-planet system TOI-5624: Four transiting sub-Neptunes with an outer companion revealed by transit-timing variations". 2026-04-21. arXiv:2604.15035 [astro-ph.EP].
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Cowing, Keith (2026-04-19). "The Multi-planet System TOI-5624: Four Transiting Sub-Neptunes With An Outer Companion Revealed By Transit-timing Variations" (in en-US). https://astrobiology.com/2026/04/the-multi-planet-system-toi-5624-four-transiting-sub-neptunes-with-an-outer-companion-revealed-by-transit-timing-variations.html.
External links
- Martin, Pierre-Yves (2026). "Planet TOI-5624 c" (in en). https://exoplanet.eu/catalog/toi_5624_c--12042/.
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