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

Stella con 6 pianeti noti

Kepler-20

Apri in Ouranos

Kepler-20 ha 6 pianeti confermati.

Misurato

Distanza: circa 922 anni luce
Pianeti confermati: 6

Distanza dal Sole

Informazioni 922 anni luce. Per attraversarlo:

Luce922 anni
Velocità della Voyager 116.4 milioni di anni
In movimento a 100 km/h9.95 miliardi di anni

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.

Come è stato scoperto

Primo pianeta scoperto nel 2011 con la velocità radiale e il transito (NASA Exoplanet Archive).

I suoi pianeti

Kepler-20 g — 4.7 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 35 days; about 250 °C, hotter than boiling water; found in 2016 by radial velocity.
Kepler-20 c — 2.9 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 11 days; about 560 °C, hotter than boiling water; found in 2011 by transit.
Kepler-20 d — 2.6 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 78 days; about 160 °C, hotter than boiling water; found in 2011 by transit.
Kepler-20 f — 1 times Earth's width, about Earth-sized — probably rocky; its year lasts 20 days; about 410 °C, hotter than boiling water; found in 2011 by transit.
Kepler-20 b — 1.8 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 4 days; about 910 °C, hotter than boiling water; found in 2011 by transit.
Kepler-20 e — 0.8 times Earth's width, about Earth-sized — probably rocky; its year lasts 6 days; about 730 °C, hotter than boiling water; found in 2011 by transit.

The NASA Exoplanet Archive's page

Da dove proviene

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.

Ogni catalogo utilizzato da Ouranos è citato nella pagina dei crediti.

I suoi pianeti

Kepler-20 g — 4.7 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 35 days; about 250 °C, hotter than boiling water; found in 2016 by radial velocity.

Kepler-20 c — 2.9 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 11 days; about 560 °C, hotter than boiling water; found in 2011 by transit.

Kepler-20 d — 2.6 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 78 days; about 160 °C, hotter than boiling water; found in 2011 by transit.

Kepler-20 f — 1 times Earth's width, about Earth-sized — probably rocky; its year lasts 20 days; about 410 °C, hotter than boiling water; found in 2011 by transit.

Kepler-20 b — 1.8 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 4 days; about 910 °C, hotter than boiling water; found in 2011 by transit.

Kepler-20 e — 0.8 times Earth's width, about Earth-sized — probably rocky; its year lasts 6 days; about 730 °C, hotter than boiling water; found in 2011 by transit.

Da dove proviene

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.