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Orbital Mechanics

Satellite Orbits Gravitational Interactions Comet Orbits Comet Trajectories Low-Earth Orbit Hyperbolic Orbits Long-period Comets Space Junk Lunar Orbit Gravitational Effects Eccentricity Geostationary Orbit Planetary Orbits Trajectory Analysis Cometary Orbits Sungrazers Retrograde Orbits Orbital Resonance Interstellar Travel Oort Cloud 3I/ATLAS Perihelion and Aphelion Kepler's Laws Trajectory of Comet 3l/ATLAS Orbital Solution of 3I/ATLAS Elliptical Orbits Hyperbolic Trajectories Eclipsing Binaries Space Debris Mitigation C/2025 A6 (Lemmon) Tilted Orbits Close Approaches Space Debris Hiperbolic Orbits Space Pollution Kometenbahnen Debris Clearing Sun-skirting Comets Sun-Skirting Orbits Rocket Launches Moon Classification Hiperbolic Trajectories Satellite Dynamics Gravitational Slingshot

Astronomers Map Orbit and Mass of Stormy Brown Dwarf Around Nearby Red Dwarf

Gaia-only acceleration on a faint red-dwarf host enabled the first precise dynamical mass for this companion.

Comet Lemmon Brightens Ahead of Oct. 20–21 Peak, Now Near the Big Dipper

Starlink Satellites Are Reentering Daily, Raising Safety and Environmental Questions