3552 Don Quixote, provisionally designated 1983 SA, is an exceptionally eccentric asteroid, classified as a near-Earth object of the Amor group, Mars-crosser and Jupiter-crosser, as well as a weakly active comet.

The asteroid was discovered on 26 September 1983, by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland.

[7] Don Quixote is characterized as a dark D-type asteroid in the Tholen and SMASS taxonomy.

[1][4] Due to its comet-like orbit and albedo, Don Quixote has been suspected to be an extinct comet.

[9] However, infrared observations with the Spitzer Space Telescope at 4.5 μm revealed a faint coma and tail around the object.