FIELD: astronomy. SUBSTANCE: device for demonstration of geocentric position can be used for determination of most favorable conditions for visual observation of satellites on preset latitude or, for instance, conditions under which artificial satellite does not go to shadow area. Geocentric wheel with mockups of planets is turned with respect to dial ring with scales of angles of star and sun time till it matches string carrying disc with indicators of planets. Positions of planets are fixed in proper points of rim located in line of ecliptic and aspects-arcs of ecliptic between the Sun, the Moon and planets are calculated. EFFECT: simplified design, reliable efficiency in demonstration of astronomical phenomena. 1 dwg
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