unreal.PlanetaryBody

class unreal.PlanetaryBody(name: str = '', orbit_type: OrbitType = Ellipsis, raj2000: float = 0.0, decj2000: float = 0.0, ra: float = 0.0, dec: float = 0.0, ra_geocentric: float = 0.0, dec_geocentric: float = 0.0, distance_in_au: float = 0.0, radius: float = 0.0, magnitude: float = 0.0, ue_local_transform: Transform = Ellipsis, direction_toward_earth: Vector = Ellipsis, vsop87_body_type: VSOP87BodyType = Ellipsis, apparent_diameter_degrees: float = 0.0, scaled_apparent_diameter_degrees: float = 0.0, age: float = 0.0, illumination_percentage: float = 0.0)

Bases: CelestialBody

Additional Properties specific to Planetary Bodies (Planets/Moons)

C++ Source:

• Plugin: CelestialVault

• Module: CelestialVault

• File: CelestialDataTypes.h

Editor Properties: (see get_editor_property/set_editor_property)

• age (double): [Read-Write] indication of the body disc age (phase). 0 = New, 0.25 = First quarter, 0.5 = Full, 1 = Next New

• apparent_diameter_degrees (double): [Read-Write] The True apparent diameter of the Body seen from Earth (Angular size, in degrees)

• dec (double): [Read-Write] The Body Declination of date (topocentric, from observer lat/lon)

• dec_geocentric (double): [Read-Write] The Body Declination of date (geocentric) - used for 3D scene placement. In Degrees.

• decj2000 (double): [Read-Write] The Body J2000 Declination (topocentric, from observer lat/lon) - In Degrees

  Note: The “true” catalog J2000 is always geocentric; We decided to express this value in the topocentric variant for validation against JPL Horizons or Stellarium, which use data generated with a surface observer.

• direction_toward_earth (Vector): [Read-Write] Keep track of the location toward the Earth

• distance_in_au (double): [Read-Write] The Body distance to Earth - In Astronomical Units!

• illumination_percentage (double): [Read-Write] indication of percentage of the illumination when the Body is fully visible

• magnitude (double): [Read-Write] The Magnitude of the Body seen from Earth

• name (str): [Read-Write] The Body Name

• orbit_type (OrbitType): [Read-Write] One of the predefined Orbit types (Solar system planets), any custom one for fantasy planets

• ra (double): [Read-Write] The Body Right Ascension of date (topocentric, from observer lat/lon)

• ra_geocentric (double): [Read-Write] The Body Right Ascension of date (geocentric) - used for 3D scene placement. In hours.

• radius (double): [Read-Write] The Body Radius in Kilometers

• raj2000 (double): [Read-Write] The Body J2000 Right Ascension (topocentric, from observer lat/lon) - In hours!

  Note: The “true” catalog J2000 is always geocentric; We decided to express this value in the topocentric variant for validation against JPL Horizons or Stellarium, which use data generated with a surface observer.

• scaled_apparent_diameter_degrees (double): [Read-Write] The Scaled apparent diameter of the Body seen from Earth (Angular size, in degrees)

  Takes the fake scaling factor into consideration, so useful for camera FOV tracking.

• ue_local_transform (Transform): [Read-Write] Keep track of the Vault-relative transform, at ToD = 0 for animated bodies (Moon)

• vsop87_body_type (VSOP87BodyType): [Read-Write] VSOP87 Identifier of the Planetary Body

property age: float

[Read-Write] indication of the body disc age (phase). 0 = New, 0.25 = First quarter, 0.5 = Full, 1 = Next New

Type:

(double)

property apparent_diameter_degrees: float

[Read-Write] The True apparent diameter of the Body seen from Earth (Angular size, in degrees)

Type:

(double)

property illumination_percentage: float

[Read-Write] indication of percentage of the illumination when the Body is fully visible

Type:

(double)

property scaled_apparent_diameter_degrees: float

[Read-Write] The Scaled apparent diameter of the Body seen from Earth (Angular size, in degrees) Takes the fake scaling factor into consideration, so useful for camera FOV tracking.

Type:

(double)

property vsop87_body_type: VSOP87BodyType

[Read-Write] VSOP87 Identifier of the Planetary Body

Type:

(VSOP87BodyType)