[9] A different HCM analysis finds this asteroid to be the parent body of its own Hippasos family,[10] first described by Jakub Rozehnal and Miroslav Brož in 2014.
According to the astronomers' model, the Hippasos family consists of 104 known members, and was formed 1 to 2 billion years ago.
The extrapolated size of the original body is between 67 and 168 kilometers, which is strongly influenced by the amount of possible interlopers into the family.
In December 2013, a rotational lightcurve of Hippasos was obtained from photometric observations by Robert Stephens at the Center for Solar System Studies in Landers, California.
[8][a] According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Hippasos measures 53.98 kilometers in diameter and its surface has an albedo 0.066,[6] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 55.67 kilometers based on an absolute magnitude of 10.0.