*Reference Surface:*

Projection: Gauss-Krueger (similar
to Transverse Mercator)

Zones: 4-32 (6-degrees wide)

Spheroid: Krasovsky (1946)

Units: meters

Datum: Pulkovo 1942

USER_DEFINED 25 -141 -78.5
0 0.35 0.736 0

Scale factor: 1.000 (compared to UTM's 0.9996)

Easting (y):500 000 m

The spheroid is Krassovsky (1946):

Semi-major axis: a=6378245.000m

Semi-minor axis: b=6356863m

(a-b)/a = 1/298.3

Map projection is Gauss-Krueger(sp?)

This is very similar to UTM but has unit (1.000) scale
along main

meridian of a 6-degree zone, whereas UTM has 0.9996
scale.

Northing ( x ) is measured from equator,

Easting ( y ) is represented as

n mmm mmm

where n is zone number (first zone is 0-6 degrees east
of Greenwich)

mmm mmm is meters measured so that main meridian of
the zone has

y=500 000m