ADS 1359
multiple star system in the constellation Cassiopeia
ADS 1359 is a quadruple star system in the constellation Cassiopeia. It is composed of two sun like stars in an eclipsing binary with a 2.5-day period, which is in turn orbited by an A-type main-sequence star with a 185-year orbital period. There is also HD 236848 which is a distant proper motion companion. It is very faintly visible to the naked eye under ideal observing conditions.
Visual binary
The visual binary was discovered by Sherburne Wesley Burnham at Dearborn Observatory in Chicago in 1880. A first preliminary orbit was calculated in 1971 by astronomer Georgije Popović using observations from 1880 to 1967. Improved orbits were calculated in 1995, 2009 and 2017. The two stars were separated by 1.0″ when they were discovered, but only 0.50″ in 2010. The orbit has a high eccentricity and the separation of the two stars varies between about 0.2″ and 1.6″.
Eclipsing binary
ADS 1359 was discovered by the Hipparcos spacecraft to be a detached eclipsing binary and given the variable star designation V773 Cassiopeiae.
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This entry incorporates text from “ADS 1359” 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.