10 Arietis
binary star in the constellation Aries
10 Arietis is a binary star system in the northern constellation of Aries. 10 Arietis is the Flamsteed designation. It is visible to the naked eye as a dim, yellow-white hued star with a combined apparent visual magnitude of 5.63. Based upon parallax measurements, it is located around 159 light years away from the Sun. The system is receding from the Earth with a heliocentric radial velocity of +12.9 km/s.
The pair orbit each other with a period of approximately 325 years and an eccentricity of 0.59. The semimajor axis of the orbit has an angular size of 1.39″. The magnitude 5.92 primary, designated component A, is an aging F-type subgiant star with a stellar classification of F8 IV. The secondary star, component B, is a magnitude 7.95 F-type main-sequence star with a stellar classification of F9 V. There is a magnitude 13.5 visual companion, designated component C, at an angular separation of 95.30″ along a position angle of 150°, as of 2001.
“10 Arietis” enters the record as binary star in the constellation Aries. Crown Archives preserves that source wording while asking what Arietis, binary and star can confirm, complicate or overturn.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q2401139. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2001.
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This entry incorporates text from “10 Arietis” 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.