Trojan (celestial body) whatever the planet and trojan masses. And if = , then both must exceed 13+√168 ≈ 25.9615. But all this assumes a three-body system: once other bodies are introduced, even if distant and small, stability of the system requires larger ratios. 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°
Abnormal profit Abnormal profit persists in the long run in imperfectly competitive markets where firms successfully block the entry of new firms. Abnormal profit is usually generated by an oligopoly or a monopoly; however, firms often try to hide this fact, both from the market and government, in order to reduce the chance of competition, or government intervention in the form of an antitrust investigation. In principle, there are three kinds of abnormal profit: Business writer Michael Porter and Anita M. McGahan undertook an empirical study of the "emergence and sustainability of abnormal profits" in 2003, in which they concluded that both