Class Name: GSE Location 3D

Superclass - Location 3D

Definition

A coordinate within the Geocentric Solar Ecliptic (GSE) 3D Spatial Reference Frame (SRF).

The Geocentric Solar Ecliptic Spatial Reference Frame, also known as the Ecliptic (ECL) or Solar Ecliptic (SE), is based on a Cartesian coordinate system with 3 orthogonal axes and an origin at the Object Reference Model/ Earth Reference Model (ORM/ERM) mass-center as defined by the World Geodetic System (WGS) 1984 ellipsoid. The X axis is defined as pointing in the direction of the Sun (noon meridian) and is in the Rotational Equatorial plane. The Z axis is defined as perpendicular to the ecliptic plane (parallel to the ecliptic pole) and pointing northwards. The Y axis is defined as orthogonal to the other two axes and lying in the Ecliptic plane, so as to form a right-handed orthogonal set.

Locations are defined as {lon, lat, r} triplets from the origin (ORM/ERM mass-center). Longitude (lon) is defined as the geocentric angle measured eastward along the intersection of the ecliptic plane with the ORM/ERM surface from the noon meridian to the local meridian containing the radius vector. Latitude (lat) is defined as the geocentric angle between the radius vector and the ecliptic plane; it is positive towards the north. R is the magnitude of the radius vector.

See the SEDRIS Spatial Reference Model (SRM) for additional details.

Primary Page in DRM Diagram:

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Example

GSE provides a convenient system for representing

1. Interplanetary magnetic field observations.
2. Solar wind velocity data.
3. Satellite trajectories.

FAQs

Is GSE an inertial coordinate system?

GSE is quasi-inertial in that it has a yearly rotation.

Constraints

• Environment Root Spatial Reference Frame
• Locations Under Model

Component of (one-way)(inherited)

• optionally, some Arcs
• optionally, some Base Perimeter Data
• optionally, some Base Reference Vectors
• optionally, some Directional Light Behaviors
• optionally, a Distance Level of Detail Data (notes)
• optionally, some Ellipses
• optionally, some Elliptic Cylinders
• optionally, some Feature Edges
• optionally, a Feature Node
• optionally, some Image Anchors
• optionally, some Labels
• optionally, a Location Table
• optionally, some Morph Points
• optionally, some Point Geometries
• optionally, some Property Grid Hook Points
• optionally, a Reference Origin
• optionally, some Spatial Domains
• optionally, some Spatial Index Related Feature Topologies
• optionally, some Spatial Index Related Features
• optionally, some Spatial Index Related Geometries
• optionally, some Tack Points
• optionally, some Vertices
• optionally, some Vertex with Component Indices
• optionally, some World 3X3s
• optionally, some World Transformations
• optionally, an Attachment Point
• optionally, some Center of Buoyancies
• optionally, some Center of Mass
• optionally, some Center of Pressures
• optionally, a Contact Point
• optionally, some Positional Lights
• optionally, some Separating Planes
• optionally, some Sound Instances
• optionally, some Stamp Behaviors
• optionally, some Volumes
• optionally, some Volume Level of Detail Data
• optionally, some Volume Light Behaviors

Field Elements

Notes

Component of Notes

Distance_Level_of_Detail_Data

 the center point for the LOD test

Fields Notes

longitude

 in degrees

latitude

 in degrees

radius

 in meters