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Thread: Moon Occults Asteroid 7 Iris - 2021 SEP 01

  1. #1
    Join Date
    Sep 2007
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    Cool Moon Occults Asteroid 7 Iris - 2021 SEP 01

    A waning crescent Moon will occult (cover) the magnitude +9.7 asteroid 7 Iris at nighttime for telescopic observers in much of North America on 2021 SEP 01. For observers in western Eurasia (including the British Isles) this will be a rather difficult if not impossible daytime event.

    The immersion will occur on the lunar bright limb, with emersion from the dark limb. Lucky observers on a graze path can witness the star passing through lunar hills and valleys. Those between of the two graze paths will see a full occultation.

    I’ve created a graze map, a set of Besselian elements for computer input, and a preview graphic with data for Chicago. They can be seen by visiting my Occultations webpage at https://www.CurtRenz.com/occultations.html

    Photos and descriptions of the occultation would be welcome additions to this thread. If you would like specific occultation or graze predictions for your location, please reply to this post with your longitude, latitude, elevation and time zone.
    Last edited by Centaur; 2021-Aug-20 at 10:03 PM.
    For astronomical graphics and data visit
    https://www.CurtRenz.com/astronomy.html

  2. #2
    Join Date
    Sep 2007
    Location
    USA
    Posts
    1,950
    Tonight (Tue-Wed) is the night.
    For astronomical graphics and data visit
    https://www.CurtRenz.com/astronomy.html

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