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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2颗已知行星的恒星

7 CMa

在 Ouranos 中打开

大犬座7是一颗K1III(+M)型恒星,拥有2颗已确认的行星。

实测

距离
约64.6光年
恒星光谱型
K1III(+M)
已确认的行星
2

与太阳的距离

简介 64.6光年. 穿越它需要:

  • 光64.6年
  • 旅行者1号的速度1.15百万年
  • 以100 km/h的速度行驶697百万年

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

  • 2011年通过视向速度法发现首颗行星(NASA系外行星档案库)。

它的行星

  • 7 CMa b — 13 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 2 Earth years; about 110 °C, hotter than boiling water; found in 2011 by radial velocity.
  • 7 CMa c — 14 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 3 Earth years; about 77 °C, between freezing and boiling; found in 2019 by radial velocity.

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。