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Collect auxiliary lunar data

Sun/Moon/Earth Configuration

Using the 1998 edition of The Astronomical Almanac look up the Ephemeris of Physical Observations of the moon to get the configuration of the Sun, Moon, and Earth (as seen from the Moon) at the time of our observation. You will need to interpolate the values in the table to our observation time (0113 UTC) on 1998 Sept 29 (UTC). For our observations, you need to get the following values from the table:

  1. True distance of the moon (units are Earth radii). This is the distance between the centers of the Earth and Moon.
  2. The Earth’s selenographic longitude and latitude (point on the moon where the earth is on the zenith).
  3. The Sun’s selenographic co-longitude and latitude (read the notes to the table at the start of the section to see how co-longitude is related to longitude).

These data give us the critical viewing geometry for using the shadow lengths to estimate the heights of the crater walls.

Also look up values for the mean radius of the Earth and the Moon (in kilometers).

Annotated Image and Table

Annotate your hardcopy of the enhanced image with the names of the major craters, mountains and maria.

Compile a table of the craters you have identified, and give the data extracted from the sources described above. Also make an accompanying table of the date of observation and the sun/moon/earth configuration information that you derived from the sources above.