Long period comet, a kind of periodic comet, whose cycle of revolution exceeds 200 years.
- Chinese name
- Long-period comet
- Foreign name
- Biela comet
- Headword
- Comet Bira
- Discipline
- Astrogeography
annotations: It was discovered in 1826 by Wilhelm Biela, an Austrian. by Short period comet It is the most prominent one with a revolution period of 6.6 years. When it appeared in November 1846, it split into two comets with a short tail each, running in orbit together; When it reappeared in 1852, though it was still two, they were far apart from each other; Since then, it has become visible on November 27 every year Andromeda meteor shower 。 "On the night of October 20 (November 27, 1798) in the third year of Jiaqing in the Qing Dynasty, there was a lot of communication among stars" in the Chinese Chronicles of Haining Prefecture, recording the grand occasion of the meteor shower 
