Jordan Transverse Mercator

Geodesy
Fundamentals
Geodesy Geodynamics Geomatics Cartography History
Concepts
Geographical distance Geoid Figure of the Earth Geodetic datum Geodesic Geographic coordinate system Horizontal position representation Latitude / Longitude Map projection Reference ellipsoid Satellite geodesy Spatial reference system
Technologies
Global Navigation Satellite System (GNSS) Global Positioning System (GPS) GLONASS (Russian) BeiDou (BDS) (Chinese) Galileo (European) Indian Regional Navigation Satellite System (IRNSS)
Standards
ED50 European Datum 1950 SAD69 South American Datum 1969 GRS 80 Geodetic Reference System 1980 NAD83 North American Datum 1983 WGS84 World Geodetic System 1984 NAVD88 N. American Vertical Datum 1988 ETRS89 European Terrestrial Reference System 1989 GCJ-02 Chinese encrypted datum 2002 International Terrestrial Reference System Spatial Reference System Identifier (SRID) Universal Transverse Mercator (UTM)
History
NGVD29 (Sea Level Datum 1929)

Jordan Transverse Mercator (JTM) is a grid system created by the Royal Jordan Geographic Center (RJGC). This system is based on 6° belts with a Central Meridian of 37° East and a Scale Factor at Origin (mo) = 0.9998. The JTM is based on the Hayford ellipsoid adopted by the IUGG in 1924. No transformation parameters are presently offered by the government.^[1] However, Prof. Steven H. Savage of Arizona State University figured out that the JTM has a False Easting of 500 km, a False Northing of –3,000 km, and the three-parameter transformation to WGS84 is: ΔX = –86 meters, ΔY = –98 meters, and ΔZ = –119 meters.

Prof. Savage also offers software, ReprojectME!, which will convert coordinates between JTM and other systems. (See http://daahl.ucsd.edu/gaialab/# for more information.)

See also

• Jordan
• Mercator projection

References

External links

• Jordanian Department Of Lands & Survey