[2][7] The carbonaceous C-type asteroid has a rotation period of 10.7 hours and measures approximately 15 kilometers (9.3 miles) in diameter.

Bok orbits the Sun in the central main-belt at a distance of 2.4–2.9 AU once every 4 years and 3 months (1,550 days).

[4] In October 2014, the first rotational lightcurve for this body was obtained by Italian astronomer Giovanni Battitsa Casalnuovo at the Eurac Observatory (C62) in Bolzano, Italy.

Lightcurve analysis gave a well-defined rotation period of 10.70±0.01 hours with a relatively high brightness variation of 0.46 magnitude (U=3-).

[4] The Italian astronomer also calculated an albedo of 0.06 for its surface and a diameter of 15±3 kilometers, in agreement with the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer which gave a diameter of 15.7 kilometers and an albedo of 0.034.