Welcome to the website for the Comet Wirtanen Observing Campaign.

Our intention is to provide a central clearinghouse for basic information regarding comet 46P/Wirtanen (WERE-tuh-nun) and other high profile comets, to encourage and facilitate the acquisition, analysis and interpretation of observations, and to promote collaborations between researchers.

Recent Updates   (click for more information)

October 18: First measurements of Water Production

September 21: Update to Secular lightcurve and good news about Semrock CN filter

September 4: Update to Secular lightcurve and orbital elements

August 14: New image of the comet

July 31: Hold-the-Date announcement of the Mike A'Hearn Symposium

July 26: Update to Secular lightcurve and addition of a list of future close approaches

July 16: Update to Secular lightcurve and orbital elements

June 26: Correction on Wirtanen's recovery

June 26: Currently, Wirtanen seems to be somewhat fainter than expected from pre-recovery predictions

Site Descripition and Navigation

The navigation bar on the left can be used to access campaign pages. Some highlighted links include:

Current Status - Updates and new information about Wirtanen
Observations - Location to view what observations are planned, or submit your own plans
Physical Properties - Some of the known physical properties of comet Wirtanen
2018 Apparition - Why is this apparition historic?
History - Additional background about Wirtanen
Orbit - Information about the comet's orbit
Observing Geometry - Plots showing observing information as a function of time
Proposal Talking Points - Information and text that can be used in observing proposals

Other Observing Campaigns - Links to other objects in the observing campaign

Mailing List

We are maintaining an email list for broadcasting occasional updates regarding the comets' behavior, and for making announcements regarding short-term transient events that might prompt follow-up observations.

If you want to be added to (or removed from ) this list, then send your name, affiliation and email address to the Contact Web Form