K2-155d
Discovery | |
---|---|
K2-155 | |
Physical characteristics | |
Mean radius | 1.64 +0.18 −0.17[1] R🜨 |
Mean density | 5.41 ± 1.11 kg/m3 (9.12 ± 1.87 lb/cu yd) |
Temperature | 289 K (16 °C; 61 °F)[2] |
K2-155d is a potentially habitable
Discovery and observations
K2-155d is one of 15 exoplanets discovered by a team of Japanese astronomers led by Teruyuki Hirano at the Tokyo Institute of Technology.
Characteristics
K2-155d is a super-Earth exoplanet with a radius 1.64 times that of Earth, near the transition zone between small rock-based and larger gaseous planets.
K2-155d is one of three known planets in the system orbiting
Potential habitability
K2-155d has been labeled a potentially habitable planet that may be able to harbor liquid water.[6][3] A three-dimensional climate simulation was used to confirm the possibility of the existence of water.[3] However, its discoverer Teruyuki Hirano was cautious about the findings, stating that they do not guarantee K2-155d is habitable, as the ranges in its orbit and temperature allow the possibility of it being outside the habitable zone.[6] Factors such as the absence of solar flares could also decide if K2-155d is habitable.[3]
References
- ^ S2CID 73590567. 124.
- ^ a b "HEC: Exoplanets Calculator (K2-155d)". Planetary Habibility Laboratory. Archived from the original on 2017-08-24. Retrieved 2018-03-30.
- ^ a b c d e f g h i Mack, Eric (March 13, 2018). "A super-Earth around a red star could be wet and wild". CNET.
- ^ "K2-155 PLANET HOST OVERVIEW PAGE". NASA Exoplanet Archive.
- ^ "15 new planets confirmed around cool dwarf stars". Tokyo Tech News. March 12, 2018.
- ^ a b c d Dovey, Dana (March 14, 2018). "Super Earth 200 Light-Years Away May Hold Ideal Temperatures For Liquid Water And Life". Newsweek.
- ^ a b "Confirmed Planet Overview Page: K2-155d". NASA Exoplanet Archive. 2018.
- ^ "K2-155d". Exoplanet Data Explorer. 2018. Archived from the original on 2018-03-22. Retrieved 2018-03-21.
- S2CID 14405731.