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
Journal of Abnormal Psychology and 11th out of 121 journals in the category "Psychology, Clinical". Journal of Abnormal Psychology The Journal of Abnormal Psychology is a peer-reviewed academic journal published by the American Psychological Association (APA). The journal has been in publication for 110 years, and it is considered to be a "preeminent outlet for research in psychopathology". The "Journal of Abnormal Psychology" addresses the following major areas of focus: The journal began publication in April 1906 under the ownership of Richard G. Badger of Boston and the editorship of Morton Prince. In 1921, the name was changed to the "Journal of Abnormal Psychology