HD 81817

K3 III형 별인 HD 81817에는 확인된 행성이 2개 있습니다.

측정값

정보 878광년. 가로지르는 데 걸리는 시간:

2026-10-25까지 1년 동안 바깥쪽으로 이동한 속도의 보이저 1호(JPL Horizons). 운전: 쉬지 않고, 연료 보급 없이.

HD 81817 b — 12 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 3 Earth years; about 740 °C, hotter than boiling water; found in 2020 by radial velocity.
HD 81817 c — 12 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts 620 days; about 930 °C, hotter than boiling water; found in 2022 by radial velocity.

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.

영어 카드를 AI(Opus 5.5)가 번역했습니다. 숫자, 이름, 출처는 바뀌지 않았습니다.

알려진 행성이 2개인 별

K3 III형 별인 HD 81817에는 확인된 행성이 2개 있습니다.

정보 878광년. 가로지르는 데 걸리는 시간:

2026-10-25까지 1년 동안 바깥쪽으로 이동한 속도의 보이저 1호(JPL Horizons). 운전: 쉬지 않고, 연료 보급 없이.

HD 81817 b — 12 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 3 Earth years; about 740 °C, hotter than boiling water; found in 2020 by radial velocity.
HD 81817 c — 12 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts 620 days; about 930 °C, hotter than boiling water; found in 2022 by radial velocity.

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.