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Kepler-174d is an exoplanet orbiting the K-type star Kepler-174, located in the constellation Lyra. It was discovered by the Kepler telescope in February 2014. It orbits its parent star at 0.677 astronomical units away, and at its distance it completes an orbit once every 247 days.

Kepler-174d
Discovery
Discovered byJason F. Rowe et al.[1]
Discovery date26 February 2014
Detection method
Transit method
Orbital characteristics
Semi-major axis
0.677 AU (101,300,000 km)[1]
Orbital period (sidereal)
247.353730 ± 0.002001[1] d
StarKepler-174
Physical characteristics
Mean radius
2.19 ± 0.13[1] REarth

    Kepler-174d is notable as it is potentially habitable, with its orbit thought to lie inside of the habitable zone of Kepler-174[1]

    It is thought to be a Neptune-like exoplanet with a mass of 5.43 Earths.

    Kepler-174 habitable zone shown
    Kepler-174 habitable zone shown


    The planet is mentioned in the Star Trek: Discovery episode, Terra Firma, Part 1.[2] in which it is inhabited and is referred to as "quite beautiful".


    References


    1. Rowe, Jason F. (2014). "Validation of Kepler's Multiple Planet Candidates. III. Light Curve Analysis and Announcement of Hundreds of New Multi-planet Systems". The Astrophysical Journal. 784 (1): 20. arXiv:1402.6534. Bibcode:2014ApJ...784...45R. doi:10.1088/0004-637X/784/1/45. 45.
    2. "STAR TREK: DISCOVERY Review: "Terra Firma, Part 1"". Trek Core. 10 December 2020. Retrieved 17 December 2020.


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    Kepler-174d es un exoplaneta ubicado en la constelación de Lyra, a 1174,2 años luz de la Tierra.[1] Fue confirmado en 2014, después de que el Telescopio Espacial Kepler observase varios tránsitos del objeto frente a su estrella.[2] Con un radio de 2,18 radios terrestres (R⊕), supera con creces el límite teórico establecido por los astrofísicos, por lo que es muy probable que sea un planeta de tipo minineptuno.[3][1]


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