Traduzido por IA (Opus 5.5) a partir do cartão em inglês. Números, nomes e fontes não foram alterados.

Estrela com 3 planetas conhecidos

Kepler-446

Kepler-446, uma estrela M4, tem 3 planetas confirmados.

Medido

Sobre 314 anos-luz. Para atravessá-lo:

Voyager 1 à velocidade com que se afastou ao longo do ano até 2026-10-25 (JPL Horizons). Dirigindo: sem parar, sem nunca reabastecer.

Kepler-446 b — 1.5 times Earth's width, about Earth-sized — probably rocky; its year lasts 38 hours; about 380 °C, hotter than boiling water; found in 2015 by transit.
Kepler-446 d — 1.4 times Earth's width, about Earth-sized — probably rocky; its year lasts 5 days; about 160 °C, hotter than boiling water; found in 2015 by transit.
Kepler-446 c — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 3 days; about 250 °C, hotter than boiling water; found in 2015 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.

Traduzido por IA (Opus 5.5) a partir do cartão em inglês. Números, nomes e fontes não foram alterados.

Estrela com 3 planetas conhecidos

Kepler-446, uma estrela M4, tem 3 planetas confirmados.

Sobre 314 anos-luz. Para atravessá-lo:

Voyager 1 à velocidade com que se afastou ao longo do ano até 2026-10-25 (JPL Horizons). Dirigindo: sem parar, sem nunca reabastecer.

Kepler-446 b — 1.5 times Earth's width, about Earth-sized — probably rocky; its year lasts 38 hours; about 380 °C, hotter than boiling water; found in 2015 by transit.
Kepler-446 d — 1.4 times Earth's width, about Earth-sized — probably rocky; its year lasts 5 days; about 160 °C, hotter than boiling water; found in 2015 by transit.
Kepler-446 c — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 3 days; about 250 °C, hotter than boiling water; found in 2015 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.