客かく星せい

noun

temporary celestial body; guest star

Refers to a celestial object that appears suddenly and is visible only for a short period, such as a comet, nova, or supernova. The term is primarily used in historical or astronomical contexts.

• 古こ代だい中ちゅう国ごくの記き録ろくには、客かく星せいが現あらわれたという記き述じゅつが残のこっている。

  Ancient Chinese records contain descriptions of a guest star appearing.

• この客かく星せいは超ちょう新しん星せい爆ばく発はつだったと考かんがえられている。

  This guest star is thought to have been a supernova explosion.