OPTICAL DOUBLE STAR - Definition and synonyms of optical double star in the English dictionary

WHAT DOES OPTICAL DOUBLE STAR MEAN IN ENGLISH?

Double star

In observational astronomy, a double star is a pair of stars that appear close to each other in the sky as seen from Earth when viewed through an optical telescope. This can happen either because the pair forms a binary star, i.e. a binary system of stars in mutual orbit, gravitationally bound to each other, or because it is an optical double, a chance alignment of two stars in the sky that lie at different distances. Binary stars are important to stellar astronomers as knowledge of their motions allows direct calculation of stellar mass and other stellar parameters. Since the beginning of the 1780s, both professional and amateur double star observers have telescopically measured the distances and angles between double stars to determine the relative motions of the pairs. If the relative motion of a pair determines a curved arc of an orbit, or if the relative motion is small compared to the common proper motion of both stars, it may be concluded that the pair is in mutual orbit as a binary star. Otherwise, the pair is optical. Multiple stars are also studied in this way, although the dynamics of multiple stellar systems are more complex than those of binary stars.

WORDS THAT BEGIN LIKE OPTICAL DOUBLE STAR

optical activity

optical bench

optical brightener

optical character reader

optical character recognition

WORDS THAT END LIKE OPTICAL DOUBLE STAR

WORDS RELATING TO «OPTICAL DOUBLE STAR»

optical double star optical double star observational astronomy pair stars that appear close each other seen from earth when viewed through telescope this happen either because forms binary with adequate magnification such separated great distance together physically associated often merriam webster word doesn usually premium unabridged yourdictionary would define your here please enable javascript view comments reverso meaning activity bench character reader crown collins always appearing answers ptkl formally physical typi memidex definitions context handprint feature deep solar emphasis understand size hubble type messier object catalog seds which cataloged later winnecke most probably webb society section francisco rica romero hipparcos catalogues observer point jean francois spell correctly alternative spellings correctlly more british cambridge dictionaries ancient test using

TRANSLATION OF OPTICAL DOUBLE STAR

Find out the translation of optical double star to 25 languages with our English multilingual translator.

The translations of optical double star from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «optical double star» in English.

Translator English - Chinese

光学双星

1,325 millions of speakers

Translator English - Spanish

estrella doble óptica

570 millions of speakers

English

optical double star

510 millions of speakers

Translator English - Hindi

ऑप्टिकल डबल स्टार

380 millions of speakers

Translator English - Arabic

نجمة مزدوجة البصرية

280 millions of speakers

Translator English - Russian

оптические двойные звезды

278 millions of speakers

Translator English - Portuguese

estrela dupla óptica

270 millions of speakers

Translator English - Bengali

অপটিক্যাল ডাবল তারকা

260 millions of speakers

Translator English - French

étoile double optique

220 millions of speakers

Translator English - Malay

Bintang dua optik

190 millions of speakers

Translator English - German

optischen Doppelstern

180 millions of speakers

Translator English - Japanese

光二重星

130 millions of speakers

Translator English - Korean

광학 더블 스타

85 millions of speakers

Translator English - Javanese

Lintang optik ganda

85 millions of speakers

Translator English - Vietnamese

quang sao đôi

80 millions of speakers

Translator English - Tamil

ஆப்டிகல் இரட்டை நட்சத்திரம்

75 millions of speakers

Translator English - Marathi

ऑप्टिकल दुहेरी स्टार

75 millions of speakers

Translator English - Turkish

Optik çift yıldız

70 millions of speakers

Translator English - Italian

ottico stella doppia

65 millions of speakers

Translator English - Polish

optyczny Double Star

50 millions of speakers

Translator English - Ukrainian

оптичні подвійні зірки

40 millions of speakers

Translator English - Romanian

optic dublu stele

30 millions of speakers

Translator English - Greek

οπτικά διπλό αστέρι

15 millions of speakers

Translator English - Afrikaans

optiese dubbel ster

14 millions of speakers

Translator English - Swedish

optisk dubbelstjärna

10 millions of speakers

Translator English - Norwegian

optisk dobbel stjerne

5 millions of speakers

TENDENCIES OF USE OF THE TERM «OPTICAL DOUBLE STAR»

The term «optical double star» is normally little used and occupies the 109.443 position in our list of most widely used terms in the English dictionary.

100%

FREQUENCY

Little used

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The map shown above gives the frequency of use of the term «optical double star» in the different countries.

Principal search tendencies and common uses of optical double star

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optical double star thesaurus

List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «optical double star».

FREQUENCY OF USE OF THE TERM «OPTICAL DOUBLE STAR» OVER TIME

The graph expresses the annual evolution of the frequency of use of the word «optical double star» during the past 500 years. Its implementation is based on analysing how often the term «optical double star» appears in digitalised printed sources in English between the year 1500 and the present day.

10 ENGLISH BOOKS RELATING TO «OPTICAL DOUBLE STAR»

Discover the use of optical double star in the following bibliographical selection. Books relating to optical double star and brief extracts from same to provide context of its use in English literature.

e-Study Guide for: Universe: Solar System by Roger Freedman, ...

... systems or star systems with more than two stars, called multiple star systems. The term double star may be used synonymously with binary star, but more generally, a double star may be either a binary star or an optical double star which ...