* gnu/packages/astronomy.scm: (python-sgp4): Move here from python-science.scm.
[description]: Expand description, annotate acronyms, add link to CelesTrak.
---
gnu/packages/astronomy.scm | 29 +++++++++++++++++++++++++++++
gnu/packages/python-science.scm | 20 --------------------
2 files changed, 29 insertions(+), 20 deletions(-)
Toggle diff (73 lines)
diff --git a/gnu/packages/astronomy.scm b/gnu/packages/astronomy.scm
index 439fdf72a8..0fb3efff0a 100644
--- a/gnu/packages/astronomy.scm
+++ b/gnu/packages/astronomy.scm
@@ -1412,6 +1412,35 @@ (define-public python-reproject
changing the pixel resolution, orientation, coordinate system.")
(license license:bsd-3)))
+(define-public python-sgp4
+ (package
+ (name "python-sgp4")
+ (version "2.21")
+ (source
+ (origin
+ (method url-fetch)
+ (uri (pypi-uri "sgp4" version))
+ (sha256
+ (base32 "1vzcrlrlzmhbycdz16m8v241l8zx49vsy81wcd0yjxs80isvhyb1"))))
+ (build-system python-build-system)
+ (propagated-inputs
+ (list python-numpy))
+ (home-page "https://github.com/brandon-rhodes/python-sgp4")
+ (synopsis "Track earth satellite TLE orbits using SGP4")
+ (description
+ "This package provides a Python implementation for computations of the
+position and velocity of an earth-orbiting satellite, given the satellite’s
+@acronym{TLE, Two-line element set} orbital elements from a source like
+@url{CelesTrak, https://celestrak.org/}.
+
+It implements the most recent version of @acronym{SGP4, Simplified General
+Perturbation models}, and is regularly run against the SGP4 test suite to make
+sure that its satellite position predictions agree to within 0.1 mm with the
+predictions of the standard distribution of the algorithm. This error is far
+less than the 1–3 km/day by which satellites themselves deviate from the ideal
+orbits described in TLE files.")
+ (license license:expat)))
+
(define-public python-sunpy
(package
(name "python-sunpy")
diff --git a/gnu/packages/python-science.scm b/gnu/packages/python-science.scm
index 7af3f8202a..4e9582191c 100644
--- a/gnu/packages/python-science.scm
+++ b/gnu/packages/python-science.scm
@@ -290,26 +290,6 @@ (define-public python-scikit-allel
genetic variation data.")
(license license:expat)))
-(define-public python-sgp4
- (package
- (name "python-sgp4")
- (version "2.21")
- (source
- (origin
- (method url-fetch)
- (uri (pypi-uri "sgp4" version))
- (sha256
- (base32 "1vzcrlrlzmhbycdz16m8v241l8zx49vsy81wcd0yjxs80isvhyb1"))))
- (build-system python-build-system)
- (propagated-inputs
- (list python-numpy))
- (home-page "https://github.com/brandon-rhodes/python-sgp4")
- (synopsis "Track earth satellite TLE orbits using SGP4")
- (description
- "This package provides a Python implementation of the most recent version
-of the SGP4 satellite tracking algorithm.")
- (license license:expat)))
-
(define-public python-trimesh
(package
(name "python-trimesh")
--
2.38.1
