Research · Solar System

Comets

Observations, astrometry and photometry of comets.

CometsAstrometryPhotometryNEW: Comet Sky Map →
Latest update · 2026-10-16:Comet Sky Map →

Comets

This section collects comet observations for astrometric, photometric and morphological-evolution studies.

Comet Sky Map

A new page dedicated to comets appearing in recent MPECs. The default period is 30 days; the table uses the latest available measurement for each comet and is sorted by increasing magnitude, so the brightest comets appear first. Apparent motion, orbital parameters when available, and observer/reference selection are also included.

Open the new Comets page →

Also open the general MPC/MPEC view filtered for comets →

Reported comet magnitudes come from MPC/MPEC measurements and may be heterogeneous in band, aperture and observing convention. The dedicated page uses them as the latest available measured value and does not automatically treat them as a homogeneous light curve.