sidereal year

noun

The orbital period of the Earth with respect to the fixed stars.

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Meanings

nounsidereal year (plural sidereal years)

plural sidereal years

  1. The orbital period of the Earth with respect to the fixed stars.
  2. The time it takes for any astronomical object in orbit around a central star to orbit that star, with respect to distant stars.

Synonyms & antonyms

Also see
astronomical yearyear

Translations

Chinese Mandarin 恆星年 /恒星年
  • 恆星年 /恒星年 (héngxīngnián)orbital period
Danish siderisk år
  • siderisk årorbital period
Dutch siderisch jaar
  • siderisch jaarorbital period
Finnish sideerinen vuosi, tähtivuosi
  • sideerinen vuosiorbital period
  • tähtivuosiorbital period
French année sidérale
  • année sidéraleorbital period
German siderisches Jahr
  • siderisches Jahrorbital period
Japanese 恒星年
  • 恒星年 (kōseinen)orbital period
Korean 항성년
  • 항성년 (hangseongnyeon)orbital period
Romanian an sideral
  • an sideralorbital period
Russian сидерический год, звёздный год
  • сидерический год (sideričeskij god)orbital period
  • звёздный год (zvjózdnyj god)orbital period
Ukrainian сидеричний рік
  • сидеричний рік (syderyčnyj rik)orbital period
Cite this entry
APA

sidereal year. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sidereal%20year

MLA

“sidereal year.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sidereal%20year. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “sidereal year,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sidereal%20year.

Source: sidereal year on Wiktionary, CC BY-SA 4.0.