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Lists and Plots: Comets

This page contains lists and plots related to comets.

If you use information from any of the lists in the preparation of anypublication, please acknowledge the relevant URL and theMPC.

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Dates of Last Observation of Comets

Information on thedate of lastobservation for currently-observable comets.

Discoveries/Recoveries in the Past Year

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

Forthcoming Close Approaches to the Earth

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

Closest Approaches to the Earth by Comets

Alist of the closest cometary approaches to theearth.

Plot of the Outer Solar System

A view of theouter solar system.

Periodic Comet Numbers

The current lists of periodic comet numbers are available innumerical order oralphabetic order.

Cometary Designation System

Thetext of the IAU resolution adopted atthe 1994 General Assembly modifying the designation system for comets fromthe beginning of 1995.

Comet Naming Guidelines

Thecomet naming guidelineshave been updated with the administrative changes mandated by the IAU followingdecisions made at 2015 IAU GA.

Observatory Codes

The list ofparallax constants for observatoriesinvolved in the astrometric observation of comets and minor planets.

Archive Statistics

Information on theincreasing sizeof theMinor Planet Center's archive.

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