Members
Methods
# static getApparentGeocentricEclipticCoordinates(jd) → {EclipticCoordinates}
Apparent Ecliptic Coordinates, that is the geometric ecliptic coordinates, referred to the mean equinox of the date,
corrected for the nutation and aberration.
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
# static getApparentGeocentricEclipticLatitude(jd) → {Degree}
Apparent Ecliptic Latitude, that is, the geometric latitude of the Sun referred to the mean equinox of the date.
See AA+ CAASun::ApparentEclipticLatitude
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
# static getApparentGeocentricEclipticLongitude(jd) → {Degree}
Apparent Ecliptic Longitude, that is, the geometric longitude of the Sun referred to the mean equinox of the date,
corrected for the nutation and aberration.
See AA+ CAASun::ApparentEclipticLongitude
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
# static getApparentGeocentricEquatorialCoordinates(jd) → {EquatorialCoordinates}
Apparent Equatorial Coordinates, that is the geocentric ecliptic coordinates, referred to the mean equinox of the date,
corrected for the nutation and aberration.
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
# static getGeocentricEclipticCoordinates(jd, equinox)
Geocentric ecliptic coordinates
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
equinox |
Equinox
|
(optional) The equinox to be used: MeanOfTheDate (default) or StandardJ2000. |
EclipticCoordinates
# static getGeocentricEclipticLatitude(jd, equinox) → {Degree}
Geometric Ecliptic Latitude
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
equinox |
Equinox
|
(optional) The equinox to be used: MeanOfTheDate (default) or StandardJ2000. |
# static getGeocentricEclipticLongitude(jd, equinox) → {Degree}
Geometric Ecliptic Longitude
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
equinox |
Equinox
|
(optional) The equinox to be used: MeanOfTheDate (default) or StandardJ2000. |
# static getGeocentricEquatorialCoordinates(jd, equinox)
Geocentric equatorial coordinates
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
equinox |
Equinox
|
(optional) The equinox to be used: MeanOfTheDate (default) or StandardJ2000. |
EquatorialCoordinates
# static getGeometricEclipticLongitude(jd) → {Degree}
Low accuracy Geometric Ecliptic Longitude
The "low" accuracy (approx 0.01 degree) true geoMETRIC longitude of the
Sun referred to the mean equinox of the date. See AA pp 164. This
longitude is the quantity required in the calculation of geocentric
planetary position.
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
# static getMeanLongitudeReferredToMeanEquinoxOfDate(T) → {Degree}
Mean Longitude referred to the Mean Equinox of the Date
See AA p 164
Parameters:
| Name | Type | Description |
|---|---|---|
T |
JulianCentury
|
The julian century |
# static getRiseTransitSet(jd, geoCoords, geoCoords) → {RiseTransitSet}
The rise, transit and set times of the Sun for a given date. It uses the standard sun altitude, -0.833 degrees.
Parameters:
| Name | Type | Description |
|---|---|---|
jd |
JulianDay
|
The julian day |
geoCoords |
GeographicCoordinates
|
The geographic coordinates of the observer's location. |
geoCoords |
GeographicCoordinates
|
The observer's location. |