4 Andromedae
star in the constellation Andromeda
4 Andromedae, abbreviated 4 And, is a single star in the northern constellation of Andromeda. 4 Andromedae is the Flamsteed designation. It is dimly visible to the naked eye with an apparent visual magnitude of 5.308. Based upon an annual parallax shift of 9.16 mas as seen from Earth's orbit, it is located 356 light years away. At this distance, interstellar extinction diminishes the apparent magnitude of 4 And by 0.5326 magnitudes. The star is moving closer with a heliocentric radial velocity of −11 km/s. It has a magnitude 11.7 visual companion at an angular separation of 51.10″ along a position angle of 348°, as of 2002.
At the age of 2.2 billion years, this is an aging giant star with a stellar classification of K5 III, having consumed the hydrogen at its core and evolved away from the main sequence. It has 1.6 times the mass of the Sun and has expanded to 23 times the Sun's radius.
“4 Andromedae” enters the record as star in the constellation Andromeda. Crown Archives preserves that source wording while asking what Andromedae, star and constellation can confirm, complicate or overturn.
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This entry incorporates text from “4 Andromedae” 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.