Heavens-Above

The web site is dedicated to helping people observe and track satellites orbiting the Earth without the need for optical equipment such as binoculars or telescopes.

Special attention is paid to the ISS, Starlink satellites, and others.

Sky & Telescope magazine described Heavens-Above as "the most popular website for tracking satellites.

"[1] Users click on a map of the world to set their viewing location.

The authors also offer a freeware mobile app that shows similar information for the user's location.

A ground track from Heavens-Above. An observer in Sicily can see the International Space Station when it enters the circle at 9:26 pm. A bright object appears in the northwest, crosses the sky to a point almost overhead, and disappears, in the span of three minutes.