Traducido por IA (Opus 5.5) a partir de la ficha en inglés. Los números, nombres y fuentes no se han modificado.

Estrella con 3 planetas conocidos

K2-157

K2-157, una estrella G9 V, tiene 3 planetas confirmados.

Medido

Acerca de 973 años luz. Para cruzarlo:

La Voyager 1 a la velocidad con la que se alejó durante el año hasta 2026-10-25 (JPL Horizons). Conduciendo: sin parar, sin repostar nunca.

Primer planeta descubierto en 2018, por velocidad radial y tránsito (NASA Exoplanet Archive).

K2-157 c — 6.1 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 26 days; about 310 °C, hotter than boiling water; found in 2025 by radial velocity.
K2-157 d — 5.2 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 67 days; about 160 °C, hotter than boiling water; found in 2025 by radial velocity.
K2-157 b — 0.9 times Earth's width, about Earth-sized — probably rocky; its year lasts 9 hours; about 2,200 °C, hot enough to melt rock; found in 2018 by transit.

NASA Exoplanet Archive, Planetary Systems Composite Parameters (fetched 2026-11-02). Composite values: where a planet's size or mass was not measured, the archive estimates it from the other.
This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.

Traducido por IA (Opus 5.5) a partir de la ficha en inglés. Los números, nombres y fuentes no se han modificado.

Estrella con 3 planetas conocidos

K2-157, una estrella G9 V, tiene 3 planetas confirmados.

Acerca de 973 años luz. Para cruzarlo:

La Voyager 1 a la velocidad con la que se alejó durante el año hasta 2026-10-25 (JPL Horizons). Conduciendo: sin parar, sin repostar nunca.

Primer planeta descubierto en 2018, por velocidad radial y tránsito (NASA Exoplanet Archive).

K2-157 c — 6.1 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 26 days; about 310 °C, hotter than boiling water; found in 2025 by radial velocity.
K2-157 d — 5.2 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 67 days; about 160 °C, hotter than boiling water; found in 2025 by radial velocity.
K2-157 b — 0.9 times Earth's width, about Earth-sized — probably rocky; its year lasts 9 hours; about 2,200 °C, hot enough to melt rock; found in 2018 by transit.

NASA Exoplanet Archive, Planetary Systems Composite Parameters (fetched 2026-11-02). Composite values: where a planet's size or mass was not measured, the archive estimates it from the other.
This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.