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National UFO Reporting Center Sighting Report
Occurred : 4/18/2009 20:00 (Entered as : 04/18/09 20:00)
Reported: 4/18/2009 9:23:49 PM 21:23
Posted: 5/12/2009
Location: Tucson, AZ
Shape: Flash
Duration: 10min
Ten minute stationary pulsating white light 80 degrees elevation 60 seconds between pulses 2000 MST.

Observed pulsating white light for approx 10 minutes about 8pm local MST. Object pulsated at a rate of once every 60 seconds. Location of light was on a line between star Regulus and planet Saturn and then about 4 degrees to the south. Object remained stationary. To high of an elevation approx 80 degrees to be a geosynchronous satellite and not an aircraft or orbiting satellite. Possibly a pulsar but after 10 minutes it no longer flashed. I have observed a similar flashing light in the same area of the sky in the past but don't recall details or time of year.