Chandra X-ray Observatory over Washington tonight
Pass predictions for Washington, DC.
Next visible pass
Sun, Jul 26, 2:01 AM
Peak elevation 38.54° · rises NW · sets NW
Tracking: CXO (NORAD 25867)
7-day pass forecast
| Date | Time | Peak elev | Rises | Sets |
|---|---|---|---|---|
| Jul 26 | 2:01 AM | 38.54° | NW | NW |
| Jul 26 | 3:23 PM | 82.16° | NE | W |
| Jul 28 | 12:05 PM | 83.11° | NE | NW |
| Jul 29 | 4:24 PM | 70.27° | NE | W |
| Jul 30 | 12:56 PM | 82.19° | SW | NW |
| Jul 31 | 1:53 PM | 89.54° | NE | NW |
| Aug 1 | 5:55 PM | 39.92° | E | S |
How to spot Chandra X-ray Observatory from Washington
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 Washington.
Prefer email?
One email tonight before Chandra X-ray Observatory is visible, never more than 2/week.