[1] Buchar has been characterized as dark D-type asteroid in both the Tholen-like and Bus–Binzel-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2).
[3] In November 2004, a rotational lightcurve of Buchar was obtained from photometric observations by French amateur astronomer Laurent Bernasconi.
Lightcurve analysis gave a rotation period of 11.41 hours with a brightness amplitude of 0.47 magnitude (U=2+).
[5][6] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0656 and a diameter of 35.91 kilometers based on an absolute magnitude of 10.8.
[3] This minor planet was named in memory of Czechoslovakian astronomer Emil Buchar (1901–1979), discoverer of asteroid 1055 Tynka and one of the pioneers of satellite geodesy.