LHS 3154 b is a Neptune-sized exoplanet orbiting the red dwarf LHS 3154. It is located about 50 light-years from Earth, in the constellation of Hercules.[1][note 1] As it is a massive planet that orbits very close to a low-mass star, it is challenging current models about exoplanet formation,[1][3] as it would require 10 times more mass than there was in the protoplanetary disk where the planet formed.[3]
| Discovery[4] | |
|---|---|
| Discovered by | Mahadevan et al.[3] |
| Discovery date | 2023 |
| Radial velocity | |
| Designations | |
| LP 224-38 b, 2MASS J16063390+4054216 b, TIC 24108819 b, WISEA J160633.13+405423.7 b, LSPM J1606+4054 b | |
| Orbital characteristics[5] | |
| 0.02262±0.00018 AU | |
| Eccentricity | 0.076+0.057 −0.047 |
| 3.71778+0.00080 −0.00081 d | |
| 82°+102° −47° | |
| Star | LHS 3154 |
| Physical characteristics | |
| 3.65 R🜨[5] | |
| Mass | 13.15+0.84 −0.82 M🜨[5] |
- ^ a b Lea, Robert (2023-12-01). "This 'forbidden' exoplanet is way too massive for its star". Space.com. Retrieved 2023-12-31.
- ^ "LP 224-38". SIMBAD. Retrieved December 31, 2023.
- ^ a b c Cite error: The named reference
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