its orbit, and the circle of ground that can see it its path over the ground, 45 min back and 95 min ahead
Type in the bar at the top, or press /. It finds satellites, fleets, places, owners and coordinates, and reads plain questions.
In an answer, click any owner, mission, sector or shell in the breakdown to narrow to it. Small sets are drawn as orbits, and Watch all adds them to your watchlist.
Search a place to open it. It lists what is overhead, coming and gone, ranked with the collectors first (imaging, radar, signals intelligence). Filter by mission, sector and owner, read the clear windows, set how far counts (overhead, camera reach or radio view), order passes by how high they climb, switch the timeline to rows by owner, see who watches the area and how often, ask for a written brief, and save the area.
Press Watch on a satellite. Its next passes over your saved areas appear on the first screen, with a notice as each one arrives.
The bar at the bottom moves the whole sky up to 7 days either way. Searches then answer for the time shown. Live returns to the present.
Open it from a satellite's card or ask "why did X go over Y". Change the place, the window and the distance, compare satellites, and drag the timeline.
Answers open as a sortable table and download as CSV or GeoJSON. Area watches also download as KML for Google Earth, briefs print or copy as text, and the census offers the full catalog as CSV. Links reopen the same view.
Census counts who has what in orbit. Who moved lists satellites that burned their engines between updates, Close company shows different owners parked together in the geostationary belt, and Coming down lists what is about to re-enter. New in orbit lists the last 30 days of launches.
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Everything here is public data. Positions are computed from published orbits and are typically right to within a few kilometres for low orbits, less for satellites that have just manoeuvred. Missions and sectors are an independent researcher's reading of public sources: they describe what a satellite is built for, not what it is doing at a given moment. Satellites that governments do not publish orbits for appear only where amateur observers have tracked them, and are marked as amateur estimates.
Gathering the sky
Loading orbital elements from CelesTrak