Thâu-ia̍h
Sûi-ki
Hù-kīn
Teng-ji̍p
Siat-tēng
Kià-hù
Koan-hē Wikipedia
Bô-hū-chek seng-bêng
Chhoē
Messier 21
Gú-giân
kàm-sī
Siu-kái
Messier 21
(
M
21,
NGC
6531) sī chi̍t-ê
chhiⁿ-thôan
, tī
thian-kiû
ê ūi-tì tī
Siā-chhiú-chō
.
Messier 21
