easting coordinate (in km or m, depending on value of
km). Alternatively, a list containing items named easting,
northing, and zone, in which case these are taken from the
list and the
northing
northing coordinate (in km or m, depending on value of
km).
zone
UTM zone
hemisphere
indication of hemisphere; "N" for North, anything
else for South.
km
logical value indicating whether easting and northing
are in kilometers or meters.
Value
A list containing longitude and latitude.
References
http://en.wikipedia.org/wiki/Universal_Transverse_Mercator_coordinate_system,
downloaded May 31, 2014.