It orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 3 months (1,194 days).
[9] A rotational lightcurve of Granö was obtained from photometric observations made by amateur astronomer Robert Stephens at GMARS and Santana Observatories in March 2010.
Analysis gave a long rotation period of 138 hours with a brightness variation of 0.65 magnitude (U=2+).
[3] This minor planet was named after Johannes Gabriel Granö (1882−1956), Finnish professor of geography and rector at University of Turku from 1932 to 1934.
[2] The official naming citation was published by the Minor Planet Center on 30 January 1964 (M.P.C.