Chandra X-ray Observatory over Seattle tonight
Pass predictions for Seattle, WA.
Next visible pass
Wed, Sep 9, 1:12 PM
Peak elevation 72.41° · rises NE · sets W
Tracking: CXO (NORAD 25867)
7-day pass forecast
| Date | Time | Peak elev | Rises | Sets |
|---|---|---|---|---|
| Sep 9 | 1:12 PM | 72.41° | NE | W |
| Sep 10 | 8:25 PM | 16.12° | NW | N |
| Sep 11 | 5:42 AM | 87.72° | N | NW |
| Sep 12 | 1:03 PM | 59.24° | NE | W |
| Sep 13 | 8:57 AM | 86.32° | S | N |
| Sep 14 | 9:42 AM | 80.13° | NE | NW |
| Sep 15 | 3:20 PM | 24.17° | E | S |
How to spot Chandra X-ray Observatory from Seattle
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 Seattle.
Prefer email?
One email tonight before Chandra X-ray Observatory is visible, never more than 2/week.