HD 23472, ein K4 V-Stern, hat 5 bestätigte Planeten.
Gemessen
Entfernung
etwa 127 Lichtjahre
Spektraltyp des Sterns
K4 V
Bestätigte Planeten
5
Entfernung von der Sonne
Über 127 Lichtjahre. Zum Durchqueren:
Licht127 Jahre
Geschwindigkeit von Voyager 12.26 Millionen Jahre
Fahrt mit 100 km/h1.37 Milliarden Jahre
Voyager 1 mit der Geschwindigkeit, mit der sie sich im Jahr bis 2026-10-25 nach außen bewegte (JPL Horizons). Fahrt: ohne Pause, ohne je nachzutanken.
Wie er entdeckt wurde
Erster Planet, entdeckt 2019 durch Transit (NASA Exoplanet Archive).
Seine Planeten
HD 23472 e — 0.8 times Earth's width, about Earth-sized — probably rocky; its year lasts 8 days; about 450 °C, hotter than boiling water; found in 2022 by transit.
HD 23472 c — 1.9 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 30 days; about 190 °C, hotter than boiling water; found in 2019 by transit.
HD 23472 b — 2 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 18 days; about 270 °C, hotter than boiling water; found in 2019 by transit.
HD 23472 f — 1.1 times Earth's width, about Earth-sized — probably rocky; its year lasts 12 days; about 360 °C, hotter than boiling water; found in 2022 by transit.
HD 23472 d — 0.8 times Earth's width, smaller than the Earth; its year lasts 4 days; about 640 °C, hotter than boiling water; found in 2022 by transit.
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.