 In the SMASS classification, "Amundsenia" is a common stony S-type asteroid.In November 2006, a rotational lightcurve of "Amundsenia" was obtained from photometric observations by Petr Pravec at Ondřejov Observatory in the Czech Republic.Lightcurve analysis gave a well-defined rotation period of 7.7594 hours with a brightness amplitude between 0.14 and 0.16 magnitude ().