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asteRisk (version 1.4.5)

Computation of Satellite Position

Description

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) . David Vallado, Paul Crawford, Richard Hujsak and T.S. Kelso (2012) . Felix R. Hoots, Paul W. Schumacher Jr. and Robert A. Glover (2014) .

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Version

Install

install.packages('asteRisk')

Monthly Downloads

601

Version

1.4.5

License

GPL-3

Maintainer

Rafael Ayala

Last Published

November 2nd, 2025

Functions in asteRisk (1.4.5)

dateTimeToMJD

Calculate Modified Julian Date for a given date and time
listAvailablePlanetaryEphemerides

List Available Planetary Ephemerides Files
hpop

High-precision numerical orbital propagator
TEMEtoLATLON

Convert coordinates from TEME to geodetic latitude, longitude and altitude
getLatestSpaceData

Retrieves the latest space data
TEMEtoITRF

Convert coordinates from TEME to ITRF
calculateRazel

Calculates azimuth, elevation and range of a given object
deg2rad

Converts an angle in degrees to radians
lambert

Solve Lambert's problem to determine a transfer orbit
evaluateSPKSegment

Evaluate a given SPK segment
registerPlanetaryEphemerides

Register a Planetary Ephemerides File
revDay2radMin

Converts revolutions per day to radians per minute
readBinDAF

Read a generic binary DAF file
readOEM

Read an Orbital Ephemeris Message file
readGLONASSNavigationRINEX

Read a RINEX navigation file for GLONASS satellites
readTLE

Read a TLE file
parseTLElines

Parse the lines of a TLE
rad2deg

Converts an angle in radians to degrees
readGPSNavigationRINEX

Read a RINEX navigation file for GPS satellites
readBinSPK

Read a binary SPK file
sgp4

Propagate an orbital state vector with the SGP4 model
sgdp4

Propagate an orbital state vector with the SGP4/SDP4 model
sdp4

Propagate an orbital state vector with the SDP4 model
LATLONtoGCRF

Convert coordinates from geodetic latitude, longitude and altitude to GCRF
GCRFtoITRF

Convert coordinates from GCRF to ITRF
BCItoKOE

Calculate Keplerian orbital elements from BCI coordinates
ITRFtoLATLON

Convert coordinates from ITRF to geodetic latitude, longitude and altitude
GCRFtoLATLON

Convert coordinates from GCRF to geodetic latitude, longitude and altitude
TEMEtoGCRF

Convert coordinates from TEME to GCRF
LATLONtoITRF

Convert coordinates from geodetic latitude, longitude and altitude to ITRF
JPLephemerides

Calculate JPL main celestial objects ephemerides for a given Modified Julian Date
ITRFtoGCRF

Convert coordinates from ITRF to GCRF
KOEtoBCI

Calculate BCI coordinates from Keplerian orbital elements