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Loading contentA Sun-like star in Pegasus whose planet HD 209458 b was the first exoplanet observed transiting its star.
star:hd-209458Dataset membership
Open data
In the graph export: graph.json · graph.jsonld
Planned API: GET /api/v0/entities/star:hd-209458
Scientific entity. See the evidence framework and authority dashboard.
How HD 209458 connects across Asteria Star — scientific, cultural, and astrological links are kept separate.
Red giant in Aquarius, about 233 light-years from Earth.
Subgiant in Canis Minor, about 316 light-years from Earth.
Subgiant in Cassiopeia, about 1,129 light-years from Earth.
Main-sequence star in Centaurus, about 63.3 light-years from Earth.
Main-sequence star in Eridanus, about 46.4 light-years from Earth.
Star in Gemini, about 155 light-years from Earth.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.
European missions, observatories, and space science imagery.