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

Estrela com 5 planetas conhecidos

55 Cnc

Abrir no Ouranos

55 Cnc, uma estrela G8 V, tem 5 planetas confirmados.

Medido

Distância: cerca de 41 anos-luz
Tipo espectral da estrela: G8 V
Planetas confirmados: 5

Distância do Sol

Sobre 41 anos-luz. Para atravessá-lo:

Luz41 anos
Velocidade da Voyager 1729,000 anos
Dirigindo a 100 km/h442 milhões de anos

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

Fatos

55 Cnc f tem uma temperatura de equilíbrio entre −50 e +50 °C.

Como foi descoberto

Primeiro planeta descoberto em 1996 por velocidade radial (NASA Exoplanet Archive).

Seus planetas

55 Cnc b — 14 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts 15 days; about 430 °C, hotter than boiling water; found in 1996 by radial velocity.
55 Cnc c — 8.5 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 44 days; about 230 °C, hotter than boiling water; found in 2004 by radial velocity.
55 Cnc d — 13 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 13 Earth years; about −170 °C, below freezing; found in 2002 by radial velocity.
55 Cnc e — 1.9 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 18 hours; about 1,700 °C, hot enough to melt rock; found in 2004 by radial velocity.
55 Cnc f — 7.6 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 260 days; about 4 °C, between freezing and boiling; found in 2007 by radial velocity.

The NASA Exoplanet Archive's page

De onde vem isto

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.

Todo catálogo que o Ouranos utiliza é creditado na página de créditos.

Seus planetas

55 Cnc b — 14 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts 15 days; about 430 °C, hotter than boiling water; found in 1996 by radial velocity.

55 Cnc c — 8.5 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 44 days; about 230 °C, hotter than boiling water; found in 2004 by radial velocity.

55 Cnc d — 13 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 13 Earth years; about −170 °C, below freezing; found in 2002 by radial velocity.

55 Cnc e — 1.9 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 18 hours; about 1,700 °C, hot enough to melt rock; found in 2004 by radial velocity.

55 Cnc f — 7.6 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 260 days; about 4 °C, between freezing and boiling; found in 2007 by radial velocity.

De onde vem isto

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.