289P/Blanpain

Also known as D/1819 W1, 2003 WY25

289P/Blanpain, formerly D/1819 W1 (Blanpain) is a short-period comet with an orbital period of 5.2 years. It was discovered by Jean-Jacques Blanpain on November 28, 1819 but was considered lost until it was recovered in 2013. It was last observed in 2020.

Key facts

Comet.name: 289P/Blanpain
Comet.image: 289P 2020-01-11 NEOWISE image 3-color.png
Comet.discoverer: Jean-Jacques Blanpain (Marseille, France)
Comet.discovery_date: 1819 November 28/November 2003
Comet.designations: D/1819 W1;
Comet.epoch: 1819 November 22
Comet.semimajor: 2.993 AU
Comet.perihelion: 0.891 AU
Comet.aphelion: 5.094 AU
Comet.eccentricity: 0.702
Comet.period: 5.18 yr
Comet.inclination: 9.23°
Comet.rotation

Article

6 sections

Contents

Observational history
Scientific results
Exploration proposals
Source of Phoenicids
References
External links

== Observational history == The comet was discovered by Jean-Jacques Blanpain on November 28, 1819. Blanpain described the comet as having a "very small and confused nucleus". Another independent discovery was made on December 5 of that year by J. L. Pons. Following this the comet was lost, and was given the designation 'D' (Disappeared or Dead).