Dione: Difference between revisions
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'''Dione''' is a binary star system comprised of the yellow dwarf ''Dione A'' and the red dwarf ''Dione B''. The two stars are separated by a mean distance of 42 [[wikipedia:Astronomical_unit|AU]] with a near circular orbit around the centre point ''Dione*''. The system contains five planets, of whom [[Dione (Planet)|Dione]] is the biggest, from whom the system takes its name. | '''Dione''' is a binary star system comprised of the yellow dwarf ''Dione A'' and the red dwarf ''Dione B''. The two stars are separated by a mean distance of 42 [[wikipedia:Astronomical_unit|AU]] with a near circular orbit around the centre point ''Dione*''. The system contains five planets, of whom [[Dione (Planet)|Dione]] is the biggest, from whom the system takes its name. | ||
[[File:Dione system static schematic single panel.png|alt=Dione star system schematic|thumb|The Dione star system as a schematic]] | [[File:Dione system static schematic single panel.png|alt=Dione star system schematic|thumb|The Dione star system as a schematic. Subject to change.]] | ||
= Dione A = | = Dione A = | ||
Revision as of 17:35, 15 July 2026
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Dione is a binary star system comprised of the yellow dwarf Dione A and the red dwarf Dione B. The two stars are separated by a mean distance of 42 AU with a near circular orbit around the centre point Dione*. The system contains five planets, of whom Dione is the biggest, from whom the system takes its name.
Dione A
Dione A is a main sequence yellow dwarf, similar to Sol in mass, radius and temperature. It carries 1.02 solar masses and radiates at 1.05 solar luminosities, with a surface temperature near 5780 K. It is estimated to be around 4.1 gigayears old, placing it in the middle of its lifetime. Dione A is expected to last another 6 gigayears. The star hosts both of the system's inners worlds.
Dione B
Dione B is a red dwarf much smaller in size than Dione A.
