51 Aquilae
star in the constellation Aquila
51 Aquilae (abbreviated 51 Aql) is a star in the equatorial constellation of Aquila. 51 Aquilae is its Flamsteed designation. It has an apparent visual magnitude of 5.39, which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 35.88 mas, the distance to this star is around 90.9 light-years (27.9 parsecs).
This is an F-type main sequence star with a stellar classification of F5 V Fe-1 CH-0.7; where the 'Fe-1' and 'CH-0.7' represent abundance deficiencies of iron and the molecule CN, respectively. It is about 1.6 billion years old and is spinning relatively quickly with a projected rotational velocity of 77.5 km/s. The outer atmosphere has an effective temperature of 6,812 K, giving it the yellow-white hue characteristic of an F-type star.
“51 Aquilae” enters the record as star in the constellation Aquila. Crown Archives preserves that source wording while asking what Aquilae, star and constellation can confirm, complicate or overturn.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 12, 2026. The linked authority identifier is Q2400991. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “51 Aquilae” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.