INCOMING!, Detection and observation of Earth-approaching asteroids. |
INCOMING!, Detection and observation of Earth-approaching asteroids. |
Oct 6 2008, 07:53 PM
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
no sone seems to have noticed this yet
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Oct 6 2008, 11:59 PM
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Member Group: Members Posts: 544 Joined: 17-November 05 From: Oklahoma Member No.: 557 |
Used a reliable horizon calculator to come up with some figures. Provided you have a clear horizon.
When it is at 20 miles altitude (32 km), under perfect seeing, it should be visible for over 400 miles (640 km) in every direction. It will probably survive down to this far. It should also be glowing brightly at 50 miles altitude (80 km), and at that point be seen for at least 650 miles (1000 km). |
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