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Stella con 4 pianeti noti

WASP-47

Apri in Ouranos

WASP-47, una stella G9, ha 4 pianeti confermati.

Misurato

Distanza: circa 864 anni luce
Tipo spettrale della stella: G9
Pianeti confermati: 4

Distanza dal Sole

Informazioni 864 anni luce. Per attraversarlo:

Luce864 anni
Velocità della Voyager 115.3 milioni di anni
In movimento a 100 km/h9.32 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.

Dati

WASP-47 c ha una temperatura di equilibrio compresa tra −50 e +50 °C.

Come è stato scoperto

Primo pianeta scoperto nel 2012 con il transito e la velocità radiale (NASA Exoplanet Archive).

I suoi pianeti

WASP-47 b — 13 times Earth's width, a giant, Jupiter-sized or more; its year lasts 4 days; about 1,000 °C, hot enough to melt rock; found in 2012 by transit.
WASP-47 c — about 450 times Earth's mass; its year lasts 590 days; about −26 °C, below freezing; found in 2015 by radial velocity.
WASP-47 d — 3.7 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 9 days; about 610 °C, hotter than boiling water; found in 2015 by transit.
WASP-47 e — 1.8 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 19 hours; about 1,700 °C, hot enough to melt rock; found in 2015 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

WASP-47 b — 13 times Earth's width, a giant, Jupiter-sized or more; its year lasts 4 days; about 1,000 °C, hot enough to melt rock; found in 2012 by transit.

WASP-47 c — about 450 times Earth's mass; its year lasts 590 days; about −26 °C, below freezing; found in 2015 by radial velocity.

WASP-47 d — 3.7 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 9 days; about 610 °C, hotter than boiling water; found in 2015 by transit.

WASP-47 e — 1.8 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 19 hours; about 1,700 °C, hot enough to melt rock; found in 2015 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.