Topex-Poseidon (1992-052A, 22076) has still nice flashperiode.

From: Bram Dorreman (bram.dorreman@gmail.com)
Date: Tue Jul 10 2012 - 10:12:40 UTC

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    During my last observation session in the night of July 6 to 7 I
    observed mentioned object.
    It displayed its characteristic brightness variation:
    - always a long flat maximum
    - in the begin some small "round" maxima (I call secondary) which
    become brighter
    - at the end (of my obsrvation, not of the transit) the secondary
    maxima are easily seen by naked eye:
      magnitude +2 and as flashes
    By timing on the start of every flat maximum I determined the flash
    period: 192.09/14 = 13.72
    Time of last flash: 00:27:22.50
    
    Bram Dorreman using 7x50 binoculars and/or unaided eyes
    Site 4160: 51.27931 N, 5.47683 E, 35 m (WGS84)
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