LHS 3154 b

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]

LHS 3154 b
Discovery[4]
Discovered byMahadevan et al.[3]
Discovery date2023
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
Eccentricity0.076+0.057
−0.047
3.71778+0.00080
−0.00081 d
82°+102°
−47°
StarLHS 3154
Physical characteristics
3.65 R🜨[5]
Mass13.15+0.84
−0.82 M🜨[5]
  1. ^ Constellation obtained with a right ascension of 16h 06m 33.79s and a declination of +40° 54′ 22.0″[2] on this website.
  1. ^ a b Lea, Robert (2023-12-01). "This 'forbidden' exoplanet is way too massive for its star". Space.com. Retrieved 2023-12-31.
  2. ^ "LP 224-38". SIMBAD. Retrieved December 31, 2023.
  3. ^ a b c Cite error: The named reference :3 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference :ExoplanetEU was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference :0 was invoked but never defined (see the help page).