Lightcurve analysis gave a well-defined rotation period of (5.9274±0.0002) hours with a high brightness variation of 0.50±0.02 magnitude, indicative of its elongated shape (U=3).

[10] Alternative period determinations by Julian Oey and Frederick Pilcher in May 2014 gave very similar results of (5.9275±0.0002) and (5.9279±0.0001) hours, respectively, both with an amplitude of 0.30 magnitude (U=3−/3−).

[13][14][a] Published in 2018, thermophysical modeling of Malzovia from thermal data obtained from the Wide-field Infrared Survey Explorer (WISE) gave a sidereal period of (5.92748±0.00002 h) and two spin axes at (53.0°, 37.0°) and (242.0°, 46.0°) in ecliptic coordinates (λ, β).

[15][16] According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's WISE telescope, Malzovia measures (11.065±0.071) and (12.13±0.26 km) kilometers in diameter and its surface has a low albedo of (0.270±0.029) and (0.239±0.011), respectively.

[7][8][9] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 and calculates a diameter of 12.98 kilometers based on an absolute magnitude of 11.6.