also: にちげつせいしん
the sun, moon, and stars; heavenly bodies
A yojijukugo (four-character compound) referring collectively to the celestial bodies, often used in poetic or literary contexts.
The movements of the sun, moon, and stars have fascinated people since ancient times.
天体 is the general modern term for 'celestial body', while 日月星辰 is a more literary, set phrase specifically listing the sun, moon, and stars.
Standard kanji form; reading じつげつせいしん is the most common.
Alternate reading; less common but still encountered.
A yojijukugo composed of 日 (sun), 月 (moon), 星 (star), and 辰 (celestial body/heavenly body). The exact historical origin is uncertain, but it follows a classical Chinese pattern for enumerating celestial phenomena.