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) <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>.
Downloads
477
Last 30 days
8650th
1.2K
Last 90 days
5.7K
Last year
Trend: +33.6% (30d vs prior 30d)
34
Last 30 days
134
Last 90 days
463
Last year
Trend: -19.1% (30d vs prior 30d)
11
Last 7 days
67
Last 30 days
2
All-time
autoCRAN-only: this name is served only by autoCRAN, so the count is exact.
CRAN Check Status
Show all 13 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | OK |
| r-devel-linux-x86_64-debian-gcc | OK |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check History
OK 13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Jun 9, 2026
ERROR 12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE Jun 8, 2026
whether package can be installed
install log ‘’ does not exist
OK 12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Apr 25, 2026
NOTE 11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Apr 22, 2026
package dependencies
Package suggested but not available for checking: ‘asteRiskData’
package dependencies
Package suggested but not available for checking: ‘asteRiskData’
package dependencies
Package suggested but not available for checking: 'asteRiskData'
ERROR 10 OK · 3 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE Apr 18, 2026
whether package can be installed
Installation failed. See 'd:/Rcompile/CRANpkg/local/4.6/asteRisk.Rcheck/00install.out' for details.
package dependencies
Package suggested but not available for checking: ‘asteRiskData’
package dependencies
Package suggested but not available for checking: ‘asteRiskData’
package dependencies
Package suggested but not available for checking: 'asteRiskData'
NOTE 11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026
package dependencies
Package suggested but not available for checking: ‘asteRiskData’
package dependencies
Package suggested but not available for checking: ‘asteRiskData’
package dependencies
Package suggested but not available for checking: 'asteRiskData'
Code
Structure
Lines of code
17,381
Files
104
Compiled share
11.4%
Has compiled src
Yes
Language breakdown
API
Exported functions
33
Internal functions
224
Recent export changes
Testing & CI
Has tests
Yes
Test-to-code ratio
0.00
testthat edition
–
CI present
No
CI type
[]
PR gated
No
Docs
Return-value doc rate
100%
\dontrun example ratio
3%
Roxygen coverage
100%
Has pkgdown
No
NEWS present
Yes
Health & Security signals
Informational signals; not verdicts.
on.exit coverage
0%
Unsafe pattern score
0
Dep constraint coverage
0%
Secret pattern count
0
Bundled 3rd-party code
2 items
Portability & License
Min R version
4.0
System requirements
1
C++ standard
–
License
GPL-3
License flags
SPDX valid, OSI approved
History
Versions
13
First release
2021-03-23
Latest release
2025-11-02
Avg cadence
71 days
Cold removal rate
100%
Dep drift
11
LOC over versions
Per-file churn detail lives in the source pipeline: https://github.com/r-observatory/cran-code-metrics.