double star

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double star

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

double star

n
(Celestial Objects) two stars, appearing close together when viewed through a telescope; either physically associated (binary star) or not associated (optical double star). See also binary star, optical double star
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

dou′ble star′


n.
two stars that appear together in the sky and appear as one to the eye or through a low-power telescope.
[1775–85]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.double star - a system of two stars that revolve around each other under their mutual gravitation
star - (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
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References in periodicals archive ?
They're two double stars in Draco's head, and they provide two completely different viewing experiences.
Nine bright southern double stars were measured and compared with observations made by Bob Argyle (from Cambridge University) using the 26" refractor in Johannesburg and the values listed in the Washington Double Star Catalog (WDS).
The other clusters and double stars marked on the map are described in the table above.
The International Occultation Timing Association (IOTA) undertakes a worldwide programme of video-recording lunar occultations of known and suspected double stars, to ascertain their duplicity, position angle, separation and difference in magnitude.
They pave the way for many further fascinating studies of interacting double stars," said co-author Jean-Philippe Berger.
Although there have been past hints of the existence of other planets around double stars, this is the first confirmation.
Visual double stars are among the easiest of all astronomical objects to observe.
144 double stars are listed and mapped in order to provide useful tagets for those nights when deep-sky observation is less than optimum.
In 1651 Riccioli (see 1650, Double Stars) published Almagestum Novum (New Almagest).
Other notable attributes of Capricornus include its compactness, its rich connections with language, its remarkable double stars, and its position with regard to the zodiac, the Summer Triangle, and certain deep-sky objects.
In an effort to generate grass roots interest in double stars, the writer has produced a "Double star of the month " column in Canopus, the newsletter of the Johannesburg Centre and positive input has been received from several observers, with Jerome Jooste making a major contribution by imaging most of the double stars discussed.
Double stars are not greatly affected by the bright summer skies, and it is a good time to search out some of the classic doubles.