GeoMapSuite
Projections & Grids

Central Meridian

Direct Definition: The central meridian is the line of longitude chosen as the geometric center and axis of symmetry for a projected coordinate system zone.

Technical Details & Mathematical Formulation

In transverse Mercator projections, distortion is lowest along and adjacent to the central meridian. As distance from the central meridian increases east or west, scale distortion increases proportionally with the secant of the distance.

Mathematical Formula:\text{UTM Central Meridian} = (\text{Zone} \times 6) - 183^\circ
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Related Geodetic Concepts

Universal Transverse Mercator →False Easting →
Frequently Asked Questions

People Also Ask About Central Meridian

Answers to key questions, technical definitions, and practical geodetic applications.

QWhat does the term "Central Meridian" mean?

The central meridian is the line of longitude chosen as the geometric center and axis of symmetry for a projected coordinate system zone.

QWhat is the mathematical or technical basis of Central Meridian?

In transverse Mercator projections, distortion is lowest along and adjacent to the central meridian. As distance from the central meridian increases east or west, scale distortion increases proportionally with the secant of the distance.

QHow do professionals use Central Meridian in GIS and surveying?

Cartographers, geospatial software engineers, and navigators utilize Central Meridian to guarantee mathematical precision and consistent spatial reference frames across global datasets.

QWhich category of geodesy does Central Meridian belong to?

This concept is cataloged under the "Projections & Grids" domain in the GeoMap Suite cartographic knowledge index.

QCan I test or calculate Central Meridian on GeoMap Suite?

Yes. You can test live coordinates and see practical examples using our companion UTM Coordinate Converter tool.

QWhat are key concepts related to Central Meridian?

Directly related terms include Universal Transverse Mercator, False Easting.