[13] Sudek is an assumed carbonaceous C-type asteroid,[4] in line with the Themis family's overall spectral type.
[12]: 23 In September 2012, a rotational lightcurve of Sudek was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California.
Lightcurve analysis gave a rotation period of 8.164 hours with a brightness amplitude of 0.32 magnitude (U=2).
[5][6][7][8][9] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 15.86 kilometers based on an absolute magnitude of 12.36.
[4] Based on a proposal by Miloš Tichý, this minor planet was named after Czech photographer Josef Sudek (1896–1976), known for his black-and-white series of still lifes and panoramas of Prague.