Chandra X-ray Observatory over Portland tonight
Pass predictions for Portland, OR.
Next visible pass
Sat, Jul 25, 8:35 PM
Peak elevation 85.32° · rises NE · sets NW
Tracking: CXO (NORAD 25867)
7-day pass forecast
| Date | Time | Peak elev | Rises | Sets |
|---|---|---|---|---|
| Jul 25 | 8:35 PM | 85.32° | NE | NW |
| Jul 26 | 3:21 PM | 71.62° | NE | W |
| Jul 27 | 7:52 PM | 28.83° | W | N |
| Jul 28 | 11:42 AM | 87.32° | NE | NW |
| Jul 29 | 4:39 PM | 56.52° | NE | SW |
| Jul 30 | 10:04 AM | 78.05° | SE | NW |
| Jul 31 | 1:41 PM | 79.77° | NE | NW |
How to spot Chandra X-ray Observatory from Portland
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 Portland.
Prefer email?
One email tonight before Chandra X-ray Observatory is visible, never more than 2/week.