[1] The likely elongated V-type asteroid has a rotation period of 6.7 hours and measures approximately 5.5 kilometers (3.4 miles) in diameter.

Vestian asteroids have a composition akin to cumulate eucrites (HED meteorites) and are thought to have originated deep within 4 Vesta's crust, possibly from the Rheasilvia crater, a large impact crater on its southern hemisphere near the South pole, formed as a result of a sub-catastrophic collision.

In March 2010, a rotational lightcurve of Maupertuis was obtained from photometric observations by French amateur astronomer René Roy.

Lightcurve analysis gave a well-defined rotation period of 6.7295 hours with an exceptionally high brightness amplitude of 1.22 magnitude (U=3), indicative of a strongly elongated shape.

Using lightcurve inversion and convex shape models, as well as distributed computing power and the help of individual volunteers, a sidereal period of 6.25033±0.00001 hours was derived from the database's sparse-in-time photometry data.