TOI-375 d
| Discovery | |
|---|---|
| Discovered by | Astronomers using the Transiting Exoplanet Survey Satellite |
| Discovery date | 2026 |
| Radial velocity | |
| Orbital characteristics | |
| 0.984 ± 0.053 | |
| 297.9+28.9−18.6 days | |
| Star | TOI-375 |
| Physical characteristics | |
| 1.21 RJ (estimated) | |
| Mass | 1.40 ± 0.28 MJ |
| Temperature | 434 K |
TOI-375 d is a gas giant exoplanet orbiting the evolved K-type star TOI-375, located approximately 396 parsecs (about 1,290 light-years) from Earth. The planet was discovered in 2026 using the radial velocity method during follow-up observations of the TOI-375 planetary system.[1][2]
The planet is the outermost known member of the TOI-375 planetary system, which contains at least three confirmed giant planets.[1]
Discovery
The TOI-375 system was initially investigated after the discovery of the transiting hot Jupiter TOI-375 b by NASA's Transiting Exoplanet Survey Satellite (TESS).[1] Subsequent spectroscopic observations revealed additional radial velocity signals indicating the presence of two outer giant planets, designated TOI-375 c and TOI-375 d.[1]
The discovery paper describing the system was published in Monthly Notices of the Royal Astronomical Society in 2026.[1]
Host star
TOI-375 d orbits the evolved K-type star TOI-375. The host star has a mass greater than that of the Sun and is believed to be evolving away from the main sequence.[1]
Characteristics
TOI-375 d is classified as a gas giant planet with a minimum mass approximately 1.4 times that of Jupiter. Since the planet does not transit its host star from the perspective of Earth, its radius and true mass remain uncertain.[1]
The planet orbits its host star at a distance similar to that between the Earth and the Sun, completing one orbit every 297.9 days.[2] The equilibrium temperature of the planet is estimated to be approximately 434 K due to radiation from its evolved host star.[2]
Planetary system
TOI-375 d is part of a multi-planet system containing at least three known planets.[1]
The TOI-375 system's multiple giant planets orbiting an evolved star make it important for studies of planetary formation and migration.[1]
See also
- Exoplanet
- Gas giant
- Hot Jupiter
- Radial velocity
- List of exoplanets discovered in 2026
- Transiting Exoplanet Survey Satellite
References
- ^ a b c d e f g h i Reinarz, Y.; Jones, M. I.; Brahm, R. (2026). "A transiting hot Jupiter with two outer siblings orbiting an intermediate-mass post main-sequence star". Monthly Notices of the Royal Astronomical Society. 706: A20. arXiv:2509.26430. Bibcode:2026A&A...706A..20R. doi:10.1051/0004-6361/202557200.
- ^ a b c "TOI-375 d". NASA Science. NASA. 27 February 2026. Retrieved 15 May 2026.
External links
Content Disclaimer
Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.
- The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
- There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
- It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
- Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
- Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.