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公転周期 (koutenshuuki) Japanese meaning: orbital period | Kotomora

公こう転てん周しゅう期き

こ

う

て

ん

しゅ

う

き

Meanings

1

orbital period; period of revolution

Technical term in astronomy for the time a celestial body takes to complete one orbit around another.

地ち球きゅうの公こう転てん周しゅう期きは約やく365日にちです

。

The Earth's orbital period is about 365 days.

Kanji

公public, prince, official
転revolve, turn around, change
周circumference, circuit, lap
期period, time, date

Related words

自じ転てん周しゅう期き
公転周期 is the orbital period (revolution around another body), while 自転周期 is the rotation period (spin around its own axis).

Built from

公こう転てん+周しゅう期き

Etymology

Compound of 公転 (revolution, orbiting) and 周期 (period, cycle).