 In the Tholen classification, "Tanina" is closest to a stony S-type asteroid, and somewhat similar to an uncommon R-type asteroid, while in the SMASS classification by Bus–Binzel, "Tanina" is a common S-type asteroid.In February 2002, a rotational lightcurve of "Tanina" was obtained from photometric observations by Italian astronomer Andrea Ferrero at the Bigmuskie Observatory .Lightcurve analysis gave a well-defined rotation period of hours with a high brightness variation of magnitude, indicative of an elongated, non-spherical shape ().