EarthGravitationalModel1996 Class |
Provides the semimajor axis, gravitational parameter, and 2nd, 3rd, 4th, and 5th zonal harmonic coefficients
for the Earth Gravitational Model of 1996 (EGM96) according to NASA Technical Publication 1998-206861.
Inheritance HierarchyNamespace: AGI.Foundation.Celestial
Assembly: AGI.Foundation.Models (in AGI.Foundation.Models.dll) Version: 24.3.420.0 (24.3.420.0)
SyntaxThe EarthGravitationalModel1996 type exposes the following members.
Methods| Name | Description | |
|---|---|---|
  | NormalizationFactor |
The normalization factor for the spherical harmonic terms of the specified degree and order.
The unnormalized value divided by the normalization factor yields the normalized value.
|
| Normalize |
Computes the corresponding normalized value of an unnormalized coefficient.
|
| Unnormalize |
Computes the corresponding unnormalized value of a normalized coefficient.
|
Fields| Name | Description | |
|---|---|---|
 | GravitationalParameter |
The gravitational parameter of the Earth in meters cubed per second squared as defined by the EGM96 model.
|
| J2NormalizedValue |
The normalized second zonal harmonic coefficient.
|
| J2UnnormalizedValue |
The non-normalized second zonal harmonic coefficient.
|
| J3NormalizedValue |
The normalized third zonal harmonic coefficient.
|
| J3UnnormalizedValue |
The non-normalized third zonal harmonic coefficient.
|
| J4NormalizedValue |
The normalized fourth zonal harmonic coefficient.
|
| J4UnnormalizedValue |
The non-normalized fourth zonal harmonic coefficient.
|
| J5NormalizedValue |
The normalized fifth zonal harmonic coefficient.
|
| J5UnnormalizedValue |
The non-normalized fifth zonal harmonic coefficient.
|
| SemimajorAxis |
The semimajor axis of the Earth in meters as defined by the EGM96 model.
|
Remarks
By convention, there is a sign difference between the two conventions for expressing the zonal harmonics such that
the zonal harmonic coefficient has the opposite sign of the corresponding spherical harmonic coefficient.
See Also