It was discovered on 18 April 1915, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany.

[13] In October 2017, a rotational lightcurve of Ceraskia was obtained from photometric observations by Matthieu Conjat at Nice Observatory (020) in France.

[7][12] The result supersedes previous observations by Richard Binzel in April 1983 and by astronomers at the Palomar Transient Factory in California in October 2012, which gave a period of 7.4 and 7.375±0.0030 hours with an amplitude of 0.25 and 0.49 magnitude, respectively (U=2/2).

In 2013, modelling by an international study using photometric data from the US Naval Observatory, the Uppsala Asteroid Photometric Catalogue, the Palomar Transient Factory and the Catalina Sky Survey gave a concurring sidereal period of 7.37390±0.00002 hours and two spin axes of (325.0°, 23.0°) and (132.0°, 26.0°) in ecliptic coordinates (λ, β).

[8][10][11] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1368 and a diameter of 26.15 kilometers based on an absolute magnitude of 10.69.