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2021-08-29 - Des Moines, WA - Sphere

Spherical White Object Seen from Aircraft While Landing at SeaTac Airport

I was on Alaska Airlines flight #1460 from Las Vegas to Seattle, seated in a window seat 7A. I was looking out the window as we flew over Tacoma, making a left turn into SeaTac to land. At about the time we were flying over Des Moines on final approach I saw an object appear to be level with us, either stationary or slowly moving relative to the plane. As we flew by, it was only visible for a few seconds.

The object was perfectly spherical and white in appearance. It was not reflective, but smooth. It's difficult to estimate it's size and distance, but my guess is it was about 100 to 200 feet from the left wingtip, and 3' to 6' in diameter.

My first thought was that it might be a balloon, except that it was perfectly spherical (nothing was hanging from it) and opaque white in color, not transparent at all.
No
Yes
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Off
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No
Des Moines
USA
Sun, 08/29/2021 - 05:30
Tue, 09/07/2021 - 12:00
3 seconds
3 seconds
Sun, 08/29/2021 - 05:30
Mon, 09/06/2021 - 17:00
Sat, 08/28/2021 - 17:00
sphere
View on NUFORC
WA
Occurred : 8/29/2021 12:30 (Entered as : 08/29/21 12:30) Reported: 8/29/2021 7:58:56 PM 19:58 Posted: 9/7/2021 Location: Des Moines, WA Shape: Sphere Duration: 3 seconds Characteristics: There were aircraft in the vicinity or aircraft chasing the object
Spherical White Object Seen from Aircraft While Landing at SeaTac Airport
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