[2] Fini is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.
[11] However, the asteroid, which shows a notably low brightness variation – indicative of a spherical rather than elongated shape – still has a poorly determined rotation period.
[a] Based on observations from February 2003 and November 2011, Brian Warner at his Palmer Divide Observatory (716) in Colorado, determined three possible period solutions of 7.59±0.001, 8.641±0.002 and 9.292±0.001 hours with corresponding low amplitudes of 0.02±0.01, 0.05±0.02 and 0.06±0.01 magnitude (U=1+/1/1+).
[b] In September 2010, astronomers at the Palomar Transient Factory in California determined an alternative period of 26.971±0.0557 h with a brightness variation of 0.06 magnitude (U=1).
[6][7][8] The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE-data,[15] that is an albedo of 0.0553 and a diameter of 62.56 kilometers based on an absolute magnitude of 9.78.