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    Re: Celestial Navigation Data from USNO--alternative
    From: Bruce J. Pennino
    Date: 2019 Nov 28, 08:55 -0600
    Hello:

    For past several months I have not been following the discussions. But the title " USNO - alternative"  caught my eye.

    A short while ago I tried to use the USNO web site to do some planet observations.  The celestial navigation "data" portion of the site does not seem to exist anymore. I vaguely recollect Frank writing this has something to do with conflicts with commercial interests.  I just don't remember.

    Maybe this should be a new topic, but what is the latest update on the USNO site? Furthermore,what website can I use to input  latitude, longitude, and time to get data for  locally visible  celestial bodies  (altitude & azimuth)?
    hank

    Thank you and best regards to all. Happy Thanksgiving to those celebrating, and everyone have a happy day.

    Bruce

    -----------------------------------------

    From: "Antoine Couëtte"
    To: bpennino.ce@charter.net
    Cc:
    Sent: Wednesday November 27 2019 1:33:51PM
    Subject: [NavList] Re: Celestial Navigation Data from USNO--alternative

    re / Ritchie-nov-2019-g4624

    Nice comparison indeed !

    Which TT-UT (DeltaT) are each of these authors using ?

    For the Moon, it seems worth knowing DeltaT in order to perform fully meaningful comparisons.

    Kermit

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