Leave either end of a range empty to leave it open. The altitude is the whole orbit’s, from its lowest point to its highest.
What you follow is always drawn, whatever is ticked here.
NASA's Black Marble on the night side, whatever the map style.
Names are drawn while fewer than 250 marks are in view: zoom in to see them.
Marks glide between positions rather than stepping each second.
Everything on the map is drawn from its latest orbit data, which for some is days or weeks old.
Needs your position.
Your settings are kept on this device and never sent: not in a link, not to Orbinauts.
Positions are propagated from today’s orbit data, which drifts the further you go from today.
Your position stays in this browser. The count is worked out here, from orbits this page already has, and nothing is sent anywhere.
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Only what you follow is drawn