Python extension to the Swiss Ephemeris

A program to calculate your ephemerides.

JPL ephemerides for Julia

TLEs for high-altitude artificial satellites

A Modern Binary Ephemeris Reader for Julia, in Julia.

JavaScript library to get Positions for Astronomical Bodies, including VSOP2013, VSOP2010, VSOP87, TOP2013, TOP2010, ELP2000-MPP02, ELP2000-82b, EPHASTER ephemerides and some home-grown ones (mgstat2023). Optimized for speed and size.

An interface to NASA-JPL HORIZONS system and other Solar System Dynamics APIs in Julia

Python code to create an epheremides (a dataset of positions in orbit) for a mega-constellation of satellites in Low Earth Orbit.

Spacecraft trajectory optimization using differential evolution

Library of astronomical calculations, based on "Astronomy On The Personal Computer" by O.Montenbruck and T.Phleger .

Kosmorrolib, a library to calculate ephemerides.

kepler is a C and Python astronomy library. It implements VSOP87 for the planets, ELP 2000-82B for the Moon, minor body calculations using the MPC database, IAU precession & nutation models, rise/transit/set, Moon phase, eclipse, and equinox/solstice calculations.

Compute astronomical ephemerides from NASA/JPL DE and IMCCE INPOP

Access HORIZONS and SPICE ephemeris sources with idiomatic Julia.

A Python class for making requests to space-track.org

lhorizon helps you find things in the Solar System.

A Simple Sky Illuminance Model

Ephemerides and sight reduction for the HP Prime calculator

Python code to discover the nearest planet to Earth. R code to plot it

Calculate Moon and Sun positions in Swift.

call horizon online matlab version

Julia wrapper to the Fortran implementation of the planetary solutions VSOP87 by Bretagnon & Francou.

The program for extracting coordinates and velocities of planets of Solar system from NASA ephemerides.

Outfit is a Rust library for orbit determination and propagation of small Solar System bodies, with support for MPC, ADES, Parquet, Gauss IOD, and JPL ephemerides.

C++ implementation of Practical Astronomy With Your Calculator by Duffet-Smith

A program made for an Astronomy class in my University. It uses the ephemerides of an asteroid and generates a graph representation of it, calculating its orbital period, apogee and perigee.

computes the radial velocity between the Sun and an observatory with high accuracy

Saved useful Excel workbooks

☀️ ⏳ A small WIP iOS/iPadOS/macOS SwiftUI to show the current day's (+ past/future 6mos) daylight hours mostly to experiment with `Shapes` and CoreLocation.

Solar System Integration Engine