☄️ Comets

Notable periodic and recent bright comets, their orbital periods, and perihelion (closest approach to the Sun) dates — the time they're typically brightest.

Comet Sky Map (schematic)

Comet positions vary widely with each object's unique orbit. Select a comet below to see its approximate current sky region based on its orbital timing.

Notable Comets

About Comet Visibility

Comets brighten as they approach the Sun (perihelion) because solar heating vaporizes their ices, creating the glowing coma and tail. Precise sky positions require the comet's full orbital elements and change day to day; dedicated tools like JPL Horizons or Stellarium provide exact ephemerides for active comets.