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    Lunar Distance Puzzle
    From: Dave Walden
    Date: 2011 Aug 11, 18:12 -0700

    Given three lunar distances (only, no altitudes), can one find time and postion?

    On 14 July 2011, some time between 0300 and 0400 near 39N, 77W, one observes the

    following center to center lunar distances:

    Moon - Antares +28° 0' 25.1"
    Moon - Altair +37° 4' 31.1"
    Moon - Vega +61° 34' 11.5"


    Given the ephemeris data:

    Moon GHA Dec HP
    0300 +58° 54' 42.0" -21° 59' 37.0" +57' 33.7"
    0400 +73° 21' 14.7" -21° 54' 47.6" +57' 32.4"

    Antares
    0300 +89° 6' 10.7" -26° 27' 28.6"
    0400 +104° 8' 38.5" -26° 27' 28.6"

    Altair
    0300 +38° 47' 45.3" +8° 54' 5.5"
    0400 +53° 50' 13.1" +8° 54' 5.5"

    Vega
    0300 +57° 17' 59.2" +38° 47' 49.4"
    0400 +72° 20' 27.1" +38° 47' 49.4"


    Partial credit, outline a method. Full credit give time and position.


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