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

Stella con 4 pianeti noti

HD 164922

Apri in Ouranos

HD 164922, una stella G9 V, ha 4 pianeti confermati.

Misurato

Distanza: circa 71.8 anni luce
Tipo spettrale della stella: G9 V
Pianeti confermati: 4

Distanza dal Sole

Informazioni 71.8 anni luce. Per attraversarlo:

Luce71.8 anni
Velocità della Voyager 11.28 milioni di anni
In movimento a 100 km/h775 milioni 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 2005 con la velocità radiale (NASA Exoplanet Archive).

I suoi pianeti

HD 164922 b — 13 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 3 Earth years; about −110 °C, below freezing; found in 2005 by radial velocity.
HD 164922 e — 3.2 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 42 days; about 270 °C, hotter than boiling water; found in 2021 by radial velocity.
HD 164922 d — 1.8 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 12 days; about 520 °C, hotter than boiling water; found in 2020 by radial velocity.
HD 164922 c — 3.7 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 76 days; about 130 °C, hotter than boiling water; found in 2016 by radial velocity.

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

HD 164922 b — 13 times Earth's width (estimated from its mass, not measured), a giant, Jupiter-sized or more; its year lasts about 3 Earth years; about −110 °C, below freezing; found in 2005 by radial velocity.

HD 164922 e — 3.2 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 42 days; about 270 °C, hotter than boiling water; found in 2021 by radial velocity.

HD 164922 d — 1.8 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 12 days; about 520 °C, hotter than boiling water; found in 2020 by radial velocity.

HD 164922 c — 3.7 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 76 days; about 130 °C, hotter than boiling water; found in 2016 by radial velocity.

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.