RE: SATOBS 2006 July 13-14

From: Ted Molczan (
Date: Sat Jul 15 2006 - 12:27:52 EDT

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    Peter Wakelin wrote:
    > 99-28C:  I had almost given up trying to get a reliable 
    > measure of the photometric period of this object but last 
    > night the minima were very well defined and I got six times 
    > starting at 234338 UTC before the minima became too faint to 
    > see.  The average was 83.8s and all intervals were within 1s of this.
    Excellent. This object is difficult to time accurately.
    Your obs confirms that the slow rotational acceleration continues:
    Additions since I first posted this plot, on 2006 Jan 25:
    28/01/2006   87     Kurt Jonckheere
    28/01/2006   86     Kurt Jonckheere
    20/06/2006   84.6   Ted Molczan
    13/07/2006   83.8   Peter Wakelin
    I commented on the significance of the acceleration in that earlier post:
    Ted Molczan
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