HIP 41378 f

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HIP 41378 f
Discovery
Discovery dateJune 2016
Transit
Orbital characteristics
1.37±0.02 au
542.07975±0.00014
StarHIP 41378[1]
Physical characteristics
Mean radius
9.2 ± 0.1 REarth
Mass12 ± 3 MEarth
Mean density
0.09 ± 0.02 g cm−3
TemperatureTeq: 294 K (21 °C; 70 °F)

HIP 41378 f (also known as EPIC 211311380 f) is an exoplanet orbiting around the F-type star HIP 41378. It has an anomalously large radius (9.2 REarth) for a planet of its size and temperature, therefore the radius may actually be that of an optically thick ring system.[2] It is located within the optimistic habitable zone of its parent star.[3] No atmospheric signatures were found as in 2022, further reinforcing the hypothesis of opaque circumplanetary rings.[4]

See also[]

References[]

  1. ^ "HIP 41378 f CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2016-07-08.
  2. ^ Akinsanmi, B.; Santos, N. C.; Faria, J. P.; Oshagh, M.; Barros, S. C. C.; Santerne, A.; Charnoz, S. (2020-03-01). "Can planetary rings explain the extremely low density of HIP 41378