[3] On 13 February 2003, a minor-planet moon in orbit of Esclangona was discovered by astronomers at ESO's Very Large Telescope (UT4) on Cerro Paranal in Chile.
[2][3] Esclangona is a member of the Hungaria family, which form the innermost concentration of asteroids in the Solar System.
[19] In December 2004, photometric measurements of Esclangona made by American astronomer Brian Warner at his Palmer Divide Observatory, California, showed a lightcurve with a rotation period of 3.247±0.002 hours and a brightness variation of 0.17±0.02 in magnitude.
[13][a] According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Esclangona measures between 6.83 and 9.87 kilometers in diameter and its surface has an albedo between 0.107 and 0.41.
[7][8][9][11] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.2041 and a diameter of 8.18 kilometers with an absolute magnitude of 12.858.