LHS 1478 (also known as TOI-1640) is a M3V-type main sequence star located 59.4 light-years from Earth in the constellation of Cassiopeia.[7] It has a mass of 0.24 solar masses and a radius of 0.25 solar radii. It has an effective temperature of 3381 Kelvin. The star is fairly inactive with no major flaring activity.[5][8]
Planetary system
There is currently only one known exoplanet orbiting around the star named LHS 1478 b. It is a hot super-Earth with a mass of 2.33 Earths and a radius of 1.24 Earths. It has an equilibrium temperature of about ~595 K.[5]James Webb Space Telescope observations disfavor the possibility of a low-albedo bare rock, suggesting that the planet either has an atmosphere or a high albedo.[8]
↑Carrión-González, Óscar; Kammerer, Jens; Angerhausen, Daniel; Dannert, Felix; García Muñoz, Antonio; Quanz, Sascha P.; Absil, Olivier; Beichman, Charles A.; Girard, Julien H.; Mennesson, Bertrand; Meyer, Michael R.; Stapelfeldt, Karl R.; LIFE Collaboration (2023). "Large Interferometer for Exoplanets (LIFE). X. Detectability of currently known exoplanets and synergies with future IR/O/UV reflected-starlight imaging missions". Astronomy and Astrophysics. 678: A96. arXiv:2308.09646. Bibcode:2023A&A...678A..96C. doi:10.1051/0004-6361/202347027.
12August, P. C.; Buchhave, L. A.; Diamond-Lowe, H.; Mendonça, J. M.; Gressier, A.; Rathcke, A. D.; Allen, N. H.; Fortune, M.; Jones, K. D.; Valdés, E. A. Meier; Demory, B.-O.; Espinoza, N.; Fisher, C. E.; Gibson, N. P.; Heng, K. (2025-03-01). "Hot Rocks Survey I: A possible shallow eclipse for LHS 1478 b". Astronomy & Astrophysics. 695: A171. arXiv:2410.11048. Bibcode:2025A&A...695A.171A. doi:10.1051/0004-6361/202452611. ISSN0004-6361.
