Gliese 3378
Gliese 3378 is a dim red dwarf star.[1][2] Although it is found 25 light-years from the Solar system it is too dim to see with the naked eye. It is smaller and less massive than Sol, our sun.
The star is found n the constellation Camelopardalis, and is also known as LHS 1805 and TIC 322347050.[3]
The star is orbited by at least one exoplanet, Gliese 3378 b.[3] Its mass was initial assessed to be about five times the mass of Planet Earth.[4] More recent assessment its mass might be as little as 23 times the mass of Earth, and it orbit places it in or close to the habitable zone.
References
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"★ Star Gliese 3378". Stellar Catalog. Retrieved 2026-07-12.
Nearby star Gliese 3378 is a main sequence star that fuses hydrogen atoms into helium. It is approximately 30 % of the size of Sun and temperature on its surface is around 3340 K (3067 °C), which is about 58 % of Sun's temperature.
- ↑
Alfredo Carpineti (2026-07-09). "This Nearby Exoplanet Is Likely Nice And Rocky. But It Also Sits On The Dangerous "Cosmic Shoreline"". IFLScience. Archived from the original on 2026-07-11. Retrieved 2026-07-15.
Back in 2024, astronomers discovered an exoplanet around red dwarf GJ 3378. The star is less than a third the mass and a third the radius of our Sun, and it's generally cool and quiet.
- ↑ 3.0 3.1
"Astronomers Find Potentially Habitable Super-Earth Just 25 Light-Years Away". Science News. 2026-07-01. Archived from the original on 2026-07-04. Retrieved 2026-07-12.
Gliese 3378, also known as GJ 3378, LHS 1805 or TIC 322347050, is a red dwarf star located 25 light-years away in the northern constellation of Camelopardalis.
- ↑
"Gliese 3378b's new mass and orbit place it near the cosmic shoreline". Stellar Catalog. 2026-05-20. Retrieved 2026-07-12.
Despite the shorter orbital period, Gliese 3378b remains within the star’s habitable zone, where liquid water could exist on its surface. The lower mass increases the chance that the planet is rocky, rather than a mini-Neptune with a thick atmosphere. Its new position in the so-called “cosmic shoreline” region means it may be at risk of losing its atmosphere due to the star’s radiation, a process that can strip away gases from planets in this part of the habitable zone.