Trojan (celestial body) Trojan (celestial body) In astronomy, a trojan is a minor planet or moon that shares the orbit of a planet or larger moon, wherein the trojan remains in the same, stable position relative to the larger object. In particular, a trojan remains near one of the two trojan points of stability – designated and – which lie approximately 60° ahead of and behind the larger body, respectively. Trojan points make up two of five types of Lagrangian points, and a trojan is a type of Lagrangian object. They are one type of co-orbital object. In this arrangement, the massive star
The Celestial Sphere where there is a provision for a two-minute interlude. The tape part (created at Bell Labs) can be replaced by silence if desired. Wuorinen's "Ecclesiastical Symphonies" are the purely orchestral movements of this work. The Celestial Sphere The Celestial Sphere is a large scale oratorio for chorus and orchestra by Charles Wuorinen, commissioned by Augustana College (Rock Island, Illinois) for the 100th anniversary of the Handel Oratorio Society, which gave the premiere performance on 25 April 1981 under the direction of Donald Morrison, conductor. The composition was composed 2 January - 9 September 1980, in Baltimore, Binghamton (NY), Buffalo (NY),