How to Track a Comet's Flight Path

Research comets that are currently visible. Comets have varying orbit periods, from centuries to a few years. However, comets are visible from Earth only during their approach to the sun. Check astronomy resources such as SpaceWeather.com and Heavens-Above.com for constellation charts and detailed information on comets that are currently in the Inner Solar System.

Locate the comet in the sky. Very bright comets will sometimes be visible during daylight hours, but most can be viewed only at night. Use constellation charts to identify a comet's location in relation to bright stars or planets. Make sure the charts you are using correspond to your viewing time and location.

Track the comet with the naked eye by returning to your viewing location each night and observing the comet's change in position and magnitude. While a comet's position will appear to change only slightly from night to night, the comet will brighten and the comet's tail will lengthen as it grows closer to the sun.

Track the comet with binoculars for slightly higher magnification. Although binoculars will not show a comet in detail, they will more clearly define the comet's nucleus and tail. Comets can be more difficult to locate using binoculars, as celestial landmarks appear farther apart under higher magnification. Use a tripod or brace the binoculars on a flat surface for easier viewing.

Track a comet with a telescope for highest magnification. When viewed through a telescope, a comet approaching the sun will usually demonstrate a defined nucleus, "coma" (or faint surrounding cloud) and tail. Locating a comet with a telescope can be challenging, as celestial landmarks appear very far apart under high magnification. Always use a tripod for steady viewing. If your telescope has an automatic tracking device, look up exact coordinates for the comet and enter them into the system for quicker location.