[1] Beethoven is a non-family asteroid from the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.
[14] In the Tholen classification, Beethoven is an uncommon, carbonaceous F-type asteroid,[2] while in the Barucci taxonomy, it is a C0 type.
[3] In January 2005, a fragmentary rotational lightcurve of Beethoven was obtained from photometric observations by Robert Stephens at his Santana Observatory (646) in California.
[12] According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and several publications by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Beethoven measures between 23.7 and 33.9 kilometers in diameter and its surface has an albedo between 0.04 and 0.10.
[5][6][7][8][9][10][11] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0548 and a diameter of 30.36 kilometers based on an absolute magnitude of 11.36.