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Astronomic Azimuth Meridional Component (AZM)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: azm.ttl
- Name
astroAzMeridionalComponent- Datatype
- Real
- Definition
- The deflection, north or south, of the vertical component of the astronomic azimuth when compared to the local geographic azimuth.
- Description
- A northern deflection results in a positive value of the meridional component. The geographic azimuth is the angle between a line and a plane that is parallel to both the rotational axis of the Earth and the normal to a given spheroidal approximation to the shape of the Earth at that location.
- Accepted
- 2013-10-18
- Defined by
- NFDD
- Physical quantity
- planeAngle
- Recommended unit
- Arc Second (")
- Used by
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.