Lists and Plots: Comets

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Correspondences of Comet Designations

Don't know the new-style designation for a particular comet? Try this interactive converter between old- and new-style designations.

Dates of Last Observation of Comets

Information on the date of last observation for currently-observable comets.

Discoveries/Recoveries in the Past Year

Lists of comet (and NEO/distant minor planet) designations assigned in the past year.

Recent Comet Magnitudes

Recent comet magnitudes estimates as reported to the International Comet Quarterly are available.

Forthcoming Close Approaches to the Earth

A list of close approaches to the earth by comets and near-earth minor planets in the next 33 years.

Closest Approaches to the Earth by Comets

A list of the closest cometary approaches to the earth.

Plot of the Outer Solar System

A view of the outer solar system.

Orbit Diagrams

Orbit diagrams are available for a selection of Near-Earth Objects and periodic comets.

Periodic Comet Numbers

The current lists of periodic comet numbers are available in numerical order or alphabetic order.

Cometary Designation System

The text of the IAU resolution adopted at the 1994 General Assembly modifying the designation system for comets from the beginning of 1995.

Observatory Codes

The list of parallax constants for observatories involved in the astrometric observation of comets and minor planets.

Archive Statistics

Information on the increasing size of the Minor Planet Center's archive.

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