4055 Magellan (1985 DO2) is an Amor asteroid discovered on February 24, 1985, by E. Helin at Palomar. Based upon the spectrum, it is compositionally similar to 4 Vesta. It has a high albedo of 0.31.
Photometric observations of this asteroid in 2010 show a rotation period of 7.488 ± 0.001 hours, with a brightness variation of 0.8 magnitude. The large variation suggests an elongated shape.
^ abGarcia, Karen et al. (May 2011), "Rotationally Resolved Photometry of the V-type Near-Earth Asteroid 4055 Magellan (1985 DO2)", Bulletin of the American Astronomical Society43, Bibcode:2011AAS...21822403G.