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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4颗已知行星的恒星

Kepler-411

在 Ouranos 中打开

开普勒-411是一颗K2 V型星,有4颗已确认的行星。

实测

距离
约501光年
恒星光谱型
K2 V
已确认的行星
4

与太阳的距离

简介 501光年. 穿越它需要:

  • 光501年
  • 旅行者1号的速度8.91百万年
  • 以100 km/h的速度行驶5.41亿年

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。

发现方式

  • 2013年通过凌星时间变化法和凌星法发现首颗行星(NASA系外行星档案库)。

它的行星

  • Kepler-411 e — 3.3 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 32 days; about 230 °C, hotter than boiling water; found in 2018 by transit timing variations.
  • Kepler-411 c — 4.4 times Earth's width, Neptune-sized; its year lasts 8 days; about 570 °C, hotter than boiling water; found in 2016 by transit.
  • Kepler-411 b — 2.4 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 3 days; about 870 °C, hotter than boiling water; found in 2013 by transit.
  • Kepler-411 d — 3.3 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 58 days; about 140 °C, hotter than boiling water; found in 2018 by transit.

The NASA Exoplanet Archive's page

资料来源

  • 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.

Ouranos所使用的每个星表均在致谢页中注明。