Computation of Satellite Position
Calculate Keplerian orbital elements from BCI coordinates
Calculates azimuth, elevation and range of a given object
Calculate Modified Julian Date for a given date and time
Converts an angle in degrees to radians
Evaluate a given SPK segment
Convert coordinates from GCRF to ITRF
Convert coordinates from GCRF to geodetic latitude, longitude and alti...
Retrieves the latest space data
High-precision numerical orbital propagator
Convert coordinates from ITRF to GCRF
Convert coordinates from ITRF to geodetic latitude, longitude and alti...
Calculate JPL main celestial objects ephemerides for a given Modified ...
Calculate BCI coordinates from Keplerian orbital elements
Solve Lambert's problem to determine a transfer orbit
Convert coordinates from geodetic latitude, longitude and altitude to ...
Convert coordinates from geodetic latitude, longitude and altitude to ...
List Available Planetary Ephemerides Files
Parse the lines of a TLE
Converts an angle in radians to degrees
Read a generic binary DAF file
Read a binary SPK file
Read a RINEX navigation file for GLONASS satellites
Read a RINEX navigation file for GPS satellites
Read an Orbital Ephemeris Message file
Read a TLE file
Register a Planetary Ephemerides File
Converts revolutions per day to radians per minute
Propagate an orbital state vector with the SDP4 model
Propagate an orbital state vector with the SGP4/SDP4 model
Propagate an orbital state vector with the SGP4 model
Convert coordinates from TEME to GCRF
Convert coordinates from TEME to ITRF
Convert coordinates from TEME to geodetic latitude, longitude and alti...
Provides basic functionalities to calculate the position of satellites given a known state vector. The package includes implementations of the SGP4 and SDP4 simplified perturbation models to propagate orbital state vectors, as well as utilities to read TLE files and convert coordinates between different frames of reference. Several of the functionalities of the package (including the high-precision numerical orbit propagator) require the coefficients and data included in the 'asteRiskData' package, available in a 'drat' repository. To install this data package, run 'install.packages("asteRiskData", repos="https://rafael-ayala.github.io/drat/")'. Felix R. Hoots, Ronald L. Roehrich and T.S. Kelso (1988) <https://celestrak.org/NORAD/documentation/spacetrk.pdf>. David Vallado, Paul Crawford, Richard Hujsak and T.S. Kelso (2012) <doi:10.2514/6.2006-6753>. Felix R. Hoots, Paul W. Schumacher Jr. and Robert A. Glover (2014) <doi:10.2514/1.9161>.