Bright passes, over you.
The International Space Station, Tiangong and the other objects on CelesTrak's list of the brightest satellites. A pass counts as naked-eye when the satellite is in sunlight, your sky is dark (the Sun at least 6 degrees below the horizon) and it is at least 10 degrees up.
Where are you watching from?
Passes depend on where you stand.
Your position is rounded to an area of about 10 km in your browser. Only that rounded area is stored or sent.
Watch alerts
Tell it what to watch for, in plain words.
Auspex turns the sentence into a rule, checks real passes and cloud cover, and sends a notification a few minutes before. Visitors get 1 active watch, holders get 10.
How to read a pass
- The time is when it rises above your horizon. Naked-eye passes list when it first becomes visible.
- The small chart is your sky: straight up in the middle, the horizon at the rim, north at the top.
- Brightness depends on size, angle and distance, so some visible passes are faint.