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Freefall HD


4.8 ( 9698 ratings )
مرجع التعليم
المطور: Advanced Analytic
4.99 USD

Freefall HD is a virtual planetarium. It includes planets, the moon, stars, constellations, deep-sky objects, and satellites! Choose a location on earth and the time, and Freefall HD will show you whats up in the sky.

Freefall HD uses industry-standard SGP4 and SDP4 algorithms to predict satellite motion. Accurate satellite predictions require occasional updates using a free Space-Track account, but calculations for the other celestial objects do not.