TOI-6478 b

TOI-6478b
Discovery
Discovery date	11 April 2025
Detection method	Transit
Orbital characteristics
Semi-major axis	0.1136 AU
Eccentricity	0.0
Orbital period (sidereal)	34.005019 d
Inclination	89.898
Star	TOI-6478
Physical characteristics
Mean radius	4.6 R🜨
Mass	9.9 M🜨
Temperature	204.4 K

TOI-6478b is a cold under-dense Neptune-like exoplanet that orbits around TOI-6478, a M-type main sequence star located 126 light years from Earth in the constellation of Hydra.^[1] It has a mass of 9.9 Earth masses and a radius of 4.6 Earth radii. The planet orbital period is 34.005019 days.^[2]^[3]^{[better source needed]}^[4]

References

^ "Find the constellation which contains given sky coordinates". djm.cc. Retrieved 2025-05-07.
^ Scott, Madison G; Triaud, Amaury H M J; Barkaoui, Khalid; Sebastian, Daniel; Burgasser, Adam J; Collins, Karen A; Dransfield, Georgina; Hellier, Coel; Howell, Steve B; Piette, Anjali A A; Rackham, Benjamin V; Stassun, Keivan G; Stokholm, Amalie; Timmermans, Mathilde; Watkins, Cristilyn N (2025-05-01). "TOI-6478 b: a cold under-dense Neptune transiting a fully convective M dwarf from the thick disc". Monthly Notices of the Royal Astronomical Society: staf684. doi:10.1093/mnras/staf684. ISSN 0035-8711.
^ "TOI-6478 b - NASA Ciencia" (in Spanish). 2025-05-01. Retrieved 2025-05-02.
^ Martin, Pierre-Yves (2025). "Planet TOI-6478 b". exoplanet.eu. Retrieved 2025-05-02.

This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it.

[1] "Find the constellation which contains given sky coordinates". djm.cc. Retrieved 2025-05-07.

[2] Scott, Madison G; Triaud, Amaury H M J; Barkaoui, Khalid; Sebastian, Daniel; Burgasser, Adam J; Collins, Karen A; Dransfield, Georgina; Hellier, Coel; Howell, Steve B; Piette, Anjali A A; Rackham, Benjamin V; Stassun, Keivan G; Stokholm, Amalie; Timmermans, Mathilde; Watkins, Cristilyn N (2025-05-01). "TOI-6478 b: a cold under-dense Neptune transiting a fully convective M dwarf from the thick disc". Monthly Notices of the Royal Astronomical Society: staf684. doi:10.1093/mnras/staf684. ISSN 0035-8711.

[3] "TOI-6478 b - NASA Ciencia" (in Spanish). 2025-05-01. Retrieved 2025-05-02.

[4] Martin, Pierre-Yves (2025). "Planet TOI-6478 b". exoplanet.eu. Retrieved 2025-05-02.

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