Resumen: This paper studies the main features of the dynamics around a massive annular disk. The first part addresses the difficulties finding an appropriated expression of the gravitational potential of a massive disk, which will be used to define the differential equations of motion of our dynamical system. The second part describes the main features of the dynamics with special attention to equilibrium of the system. Idioma: Inglés DOI: 10.1007/s10569-011-9371-1 Año: 2011 Publicado en: Celestial Mechanics and Dynamical Astronomy 111, 4 (2011), 431-447 ISSN: 0923-2958 Factor impacto JCR: 1.457 (2011) Categ. JCR: MATHEMATICS, INTERDISCIPLINARY APPLICATIONS rank: 21 / 91 = 0.231 (2011) - Q1 - T1 Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 30 / 56 = 0.536 (2011) - Q3 - T2 Tipo y forma: Artículo (PostPrint) Área (Departamento): Área Matemática Aplicada (Dpto. Matemática Aplicada)