Abstract

7984 Marius is a minor planet located in the asteroid main-belt region between Mars and Jupiter, which formed about 4.5 billion years ago when the planets emerged from the dense gas and dust disk around the Sun. The asteroid has an orbit with a semi-major axis of 2.63 AU, an eccentricity of 0.20, and an inclination of 9.1°, with an orbital period of 4.27 years. Light curves indicate a rotation period of 3.54 h and a slightly elongated shape. A radiometric analysis of infrared observations shows that 7984 Marius has a low albedo of about 6% and a diameter of approximately 10.5 km. The low albedo points toward a possible carbonaceous surface composition. Its absolute magnitude is 13.6 mag, and the object reaches a maximum brightness of about 16.4 mag during favorable oppositions.