Tradotto dall'IA (Opus 5.5) dalla scheda inglese. Numeri, nomi e fonti sono invariati.

Stella con 2 pianeti noti

Proxima Cen

Proxima Cen, una stella M5.5 V, ha 2 pianeti confermati.

Misurato

Informazioni 4.2 anni luce. Per attraversarlo:

Voyager 1 alla velocità con cui si è allontanata nell'anno fino al 2026-10-25 (JPL Horizons). In auto: senza sosta, senza mai fare rifornimento.

Primo pianeta scoperto nel 2016 con la velocità radiale (NASA Exoplanet Archive).

Proxima Cen b — 1 times Earth's width (estimated from its mass, not measured), about Earth-sized — probably rocky; its year lasts 11 days; about −55 °C, below freezing; found in 2016 by radial velocity.
Proxima Cen d — 0.7 times Earth's width (estimated from its mass, not measured), smaller than the Earth; its year lasts 5 days; about 9 °C, between freezing and boiling; found in 2025 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.

Tradotto dall'IA (Opus 5.5) dalla scheda inglese. Numeri, nomi e fonti sono invariati.

Stella con 2 pianeti noti

Proxima Cen, una stella M5.5 V, ha 2 pianeti confermati.

Informazioni 4.2 anni luce. Per attraversarlo:

Voyager 1 alla velocità con cui si è allontanata nell'anno fino al 2026-10-25 (JPL Horizons). In auto: senza sosta, senza mai fare rifornimento.

Primo pianeta scoperto nel 2016 con la velocità radiale (NASA Exoplanet Archive).

Proxima Cen b — 1 times Earth's width (estimated from its mass, not measured), about Earth-sized — probably rocky; its year lasts 11 days; about −55 °C, below freezing; found in 2016 by radial velocity.
Proxima Cen d — 0.7 times Earth's width (estimated from its mass, not measured), smaller than the Earth; its year lasts 5 days; about 9 °C, between freezing and boiling; found in 2025 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.