Module common 

Set of common functions used by spv-rs exposed if you want to used them for your own calculations.

Functions

a_to_au

Takes a in as (arcseconds) and parllax in mas (milliarcsecond) and outputs a in au.

apogee

Calculates r max or the maximum distance between the primary and companion boides in a twobody system also known as apogee (suffix may change depending on what object it reffers to). Output is just the x coordinate in the ellipses plane in au.

apparent_mag_to_absolute_mag

au_to_m

Simple function motsly used by spv-rs to convert au to meters (used for semi major-axis in most cases but can be used for other stuff too).

declination_total

Calculates total declination in degrees with declination_degree, declination_min and declination_s in degrees, minutes and seconds respectively.

eccentric_anomaly

Calculates the eccentric anomaly in degrees

eccentricity

If you for some reason had these parameters and not e then here ya go.

flattening

Flattening is another way to defining eccentricity for an ellipse.

flight_path_angle

Calculates the flight path angle for the companion body in degrees

linear_eccentricity

Distance between one foci and the center of the ellipse in au.

mean_motion

Mean motion or n

parallax_to_parsec

Parallax to parsec convert function where the parallax parameter is in mas (milliarcseconds).

perigee

Calculates r min or the minimum distance between the primary and companion boides in a twobody system also known as perigee (suffix may change depending on what object it reffers to). Output is just the x coordinate in the ellipses plane in au.

period

If you dind’t have the period already

radius

Calculates the total radius for a twobody system

relative_apogee

Calculates r max or the maximum distance between the primary and companion boides in a twobody system also known as apogee (suffix may change depending on what object it reffers to). Output is 3-dimensional vector that represents the coordinates for apogee rotated to be relative to the earth/sun plane in meters.

relative_perigee

Calculates r min or the minimum distance between the primary and companion boides in a twobody system also known as perigee (suffix may change depending on what object it reffers to). Output is 3-dimensional vector that represents the coordinates for perigee rotated to be relative to the earth/sun plane in meters.

right_ascension_total

Calculates total right ascension in degrees with right_ascension_h, right_ascension_min and right_ascension_s in hours, minutes and seconds respectively.

semi_major_axis

If you for some reason had these parameters and not a then here ya go

semi_minor_axis

Calculates the semi minor axis for a twobody system and returns it in meters.

semi_parameter

Calculates the semi parameter for a twobody system and returns it in meters.

specific_angular_momentum_coordinates

Calculates the specific angular momentum coordinates

specific_angular_momentum_value

Calculates the specific angular momentum value

specific_mechanical_energy

Specific mechanical energy (used by other equation but exposed here if you need it)

standard_gravitational_parameter

Calculates the stadard gravitational parameter

temperature

true_anomaly

Calculates the true anomaly in degrees