K2-80

K2-80 拥有 3 颗已确认的行星。

实测

简介 655光年. 穿越它需要：

旅行者1号以截至2026-10-25的一年中向外运动的速度（JPL Horizons）。驾车：不停歇，永不加油。

K2-80 b — 2 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 19 days; about 390 °C, hotter than boiling water; found in 2016 by transit.
K2-80 d — 2.6 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 29 days; found in 2018 by transit.
K2-80 c — 1.5 times Earth's width, about Earth-sized — probably rocky; its year lasts 6 days; about 730 °C, hotter than boiling water; found in 2016 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.

由 AI（Opus 5.5）根据英文卡片翻译。数字、名称和来源均未改动。

有3颗已知行星的恒星

K2-80 拥有 3 颗已确认的行星。

简介 655光年. 穿越它需要：

旅行者1号以截至2026-10-25的一年中向外运动的速度（JPL Horizons）。驾车：不停歇，永不加油。

K2-80 b — 2 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 19 days; about 390 °C, hotter than boiling water; found in 2016 by transit.
K2-80 d — 2.6 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 29 days; found in 2018 by transit.
K2-80 c — 1.5 times Earth's width, about Earth-sized — probably rocky; its year lasts 6 days; about 730 °C, hotter than boiling water; found in 2016 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.