• moving dot

    From R Kym Horsell@kym@sdf.org to alt.astronomy on Fri Aug 14 12:14:46 2026
    From Newsgroup: alt.astronomy

    <http://kym.massbus.org/TESS/PANORAMA/s23/WHITEDOT/>

    I was just skimming through things going to the PANORAMA pages getting
    set up on my massbus web-page when I came across a short sequence of
    TESS images showing a moving white dot. This is a first with this
    dataset. I've many times seen stars in a line blink out briefly but have
    not seen a moving bright object in successive frames. In this case ~15
    frames taken over approx 8h of TESS time. It was the first seq I took
    a close look at so maybe there will be many more.

    The dot appears after a period of haze (probably light pollution from
    the moon or Earth although the images are not flagged with that
    error-code) and moves slowly in a NE dir in the middle of the top lhs
    quarter of the image (that is itself one of 64 "dice" created by
    cutting up the 2kpx x 2kpx fits images from sector 23, camera 1, ccd 1).

    At one point it jumps a couple dozen pixels I'm pretty sure because
    mostly images were fetched from the server for every 30m (the TESS
    cameras run much faster but no need to watch the same spot in space
    every 30s is there?) and sometimes the camera slows down or the
    images were not saved on the STSCI web-server.

    Rough calc show the dot moved around .12 deg over ~8h. If it was in
    the asteroid belt that's around 200 kps way above orbital speed out
    there. If it was a CISLUNAR object like TESS I think it's moving way
    too slow.

    Anyway. Another stream of junk for the webpages managed by various
    bots. They say there is a lot to put up there. They might even finish
    it one day instead of mailing me every 5m about what they plan to do.

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