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Is Nimbus 7 tumbling?



 
 
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Old August 2nd 03, 10:03 AM
William R. Thompson
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Default Is Nimbus 7 tumbling?

I watched Nimbus 7 make a pass over a week ago, and it seemed to
brighten and fade, then brighten again before it entered Earth's
shadow. I wasn't able to spot it again until just a few minutes
ago. It brightened and dimmed twice over the space of about seventy
five seconds (transit time from alpha Andromedae to alpha
Cassiopeiae). Brighteness varied from about magnitude 6 to 8.

I've spotted Nimbus satellites before and never noticed this variation.
Maybe a fuel tank or battery has gone "bang."

--Bill Thompson
 




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