https://drosenman.r-universe.devRecent package updates in drosenmanR-universehttps://github.com/drosenman.pnghttps://drosenman.r-universe.devThu, 01 Oct 2026 19:01:10 GMTdave.rosenman.data@gmail.com (Dave Rosenman)A lightweight, fully vectorized N-body physics engine built for the R ecosystem. Simulate and visualize complex orbital mechanics, celestial trajectories, and gravitational interactions using tidy data principles. Features multiple numerical integration methods, including the energy-conserving velocity Verlet algorithm (Verlet (1967) <doi:10.1103/PhysRev.159.98>), to ensure highly stable orbital propagation. Gravitational N-body methods follow Aarseth (2003, ISBN:0-521-43272-3).https://github.com/r-universe/drosenman/actions/runs/36917001149Thu, 01 Oct 2026 19:01:10 GMTorbitr1.0.0successhttps://drosenman.r-universe.devhttps://github.com/drosenman/orbitrplotting-3d.Rmdplotting-3d.html3D Plotting2026-04-05 17:26:542026-04-09 23:46:24building-two-body-orbits.Rmdbuilding-two-body-orbits.htmlBuilding Two-Body Orbits From Scratch2026-04-08 02:09:252026-04-09 23:46:24physical-constants.Rmdphysical-constants.htmlBuilt-In Physical Constants2026-04-05 17:26:542026-04-09 23:46:24checking-a-simulation.Rmdchecking-a-simulation.htmlChecking a Simulation2026-10-01 13:43:012026-10-01 13:43:01custom-visualization.Rmdcustom-visualization.htmlCustom Visualization with ggplot2 and plotly2026-04-05 17:26:542026-04-09 23:46:24examples.Rmdexamples.htmlExamples2026-04-05 17:26:542026-04-18 18:14:11further-reading.Rmdfurther-reading.htmlFurther Reading2026-04-18 04:38:482026-04-18 04:38:48keplerian-elements.Rmdkeplerian-elements.htmlKeplerian Orbital Elements2026-04-13 02:02:322026-10-01 13:43:01quick-start.Rmdquick-start.htmlQuick Start Guide2026-04-05 17:26:542026-09-22 21:25:10reference-frames.Rmdreference-frames.htmlReference Frames2026-04-06 15:54:152026-10-01 13:43:01roadmap.Rmdroadmap.htmlRoadmap2026-04-07 12:31:012026-10-01 13:43:01the-physics.Rmdthe-physics.htmlThe Physics2026-04-05 17:26:542026-10-01 13:43:01unstable-orbits.Rmdunstable-orbits.htmlUnstable Orbits and the Three-Body Problem2026-04-05 17:26:542026-04-09 23:46:24