Chandra X-ray Observatory over St. Louis tonight
Pass predictions for St. Louis, MO.
Next visible pass
Mon, Oct 26, 4:05 AM
Peak elevation 78.50° · rises NE · sets NW
Tracking: CXO (NORAD 25867)
7-day pass forecast
| Date | Time | Peak elev | Rises | Sets |
|---|---|---|---|---|
| Oct 26 | 4:05 AM | 78.50° | NE | NW |
| Oct 27 | 9:43 AM | 76.45° | NE | W |
| Oct 28 | 10:16 AM | 42.51° | W | NW |
| Oct 29 | 6:55 AM | 86.08° | NE | NW |
| Oct 30 | 10:59 AM | 55.89° | E | SW |
| Oct 31 | 1:54 AM | 71.28° | E | NW |
How to spot Chandra X-ray Observatory from St. Louis
NASA's flagship X-ray space telescope.
- Look in the direction listed — passes start near the horizon and arc across the sky.
- Peak elevation matters — a 60°+ peak means it'll go nearly overhead; under 30° stays low.
- Best viewing is in the 90 minutes after sunset or before sunrise — the satellite is sunlit while you're in shadow.
- No equipment needed for bright passes — the ISS at peak rivals Venus.
Going to look up?
For fainter satellites you'll want 7×50 or 10×50 binoculars. A pair of Celestron SkyMaster binoculars is the consensus pick. Affiliate placement — replace with your affiliate link.
Pass alerts on your phone
Browser push, no email needed. We'll notify you 30 minutes before Chandra X-ray Observatory is visible from St. Louis.
Prefer email?
One email tonight before Chandra X-ray Observatory is visible, never more than 2/week.