Song of the Sky Pacers

The Song of the Sky Pacers is an early Chinese star catalogue in the form of poem in heptasyllabic verse, enumerating the names of stars.
The poem exists in several revision, the oldest probably written in 7th or 8th century Korea, during the late Goguryeo or the North–South States Period.
It is attributed to either Danyuanzi or to Wang Ximing. This early version is also known as the Ancient Song of the Sky Pacers for disambiguation.
In late Joseon era Korea a revised version of the poem was composed, motivated by new knowledge on Chinese asterisms imported during the Qing dynasty.
But there remained disagreement between the song and the star-charts used by the Royal Observatory. This caused confusion, especially in the national examinations for selecting new astronomers.
To resolve this situation, the Royal Observatory commissioned a Song of the Sky Pacers, Adapted to New Methods
based upon star-charts and song of the Sequel of the I-Hsiang-K'ao-ch'eng.
This New Song was edited by middle-class professional astronomer Yi Jun-yang, and corrected by nobleman Nam Byeong-gil.