From Wikipedia, the free encyclopedia
Main-belt asteroid
333 Badenia ( bə-DEE -nee-ə ; prov. designation : A892 QA or 1892 A ) is a large background asteroid , approximately 72 kilometers (45 miles) in diameter, located the outer region of the asteroid belt . It was discovered on 22 August 1892, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany.[1] The carbonaceous C-type asteroid has a rotation period of 9.9 hours. It was named after the historical Grand Duchy of Baden that existed until 1918, and where the discovering observatory is located.[2] Badenia was the first asteroid to receive a provisional designation.
Orbit and classification Badenia is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements .[4] [5] It orbits the Sun in the outer main-belt at a distance of 2.6–3.6 AU once every 5 years and 6 months (2,023 days; semi-major axis of 3.13 AU). Its orbit has an eccentricity of 0.16 and an inclination of 4° with respect to the ecliptic .[3]
Physical characteristics In the Tholen classification , Badenia is a common carbonaceous C-type asteroid , though with a nosy spectrum (:).[3]
Rotation period In April 2017, a rotational lightcurve of Badenia was obtained from photometric observations by Frederick Pilcher . Lightcurve analysis gave a rotation period of 9.862± 0.001 hours with a brightness variation of 0.24± 0.02 magnitude (U=3 ).[10] [11]
Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS , the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer , Badenia measures between 64.01 and 78.51 kilometers in diameter and its surface has an albedo between 0.047 and 0.061.[5] [6] [7] [8] The Collaborative Asteroid Lightcurve Link adopts the results from IRAS, that is, an albedo of 0.0475 and a diameter of 78.17 kilometers based on an absolute magnitude of 9.46.[11]
References External links