Spin-Shape Model for 33 Polyhymnia

We present a shape and spin axis model for main-belt asteroid 33 Polyhymnia. The model was achieved with the lightcurve inversion process, using combined dense photometric data acquired from five apparitions, between 2008-2019 and sparse data from USNO Flagstaff. Analysis of the resulting data found a sidereal period P = 18.60888 ± 0.00029 hours and two mirrored pole solutions at (λ = 19°, β = -65°) and (λ = 185°, β = -61°) with an uncertainty of ± 15 degrees.