It was discovered on 23 December 1984, by astronomer François Dossin at Haute-Provence Observatory in France[3] and named after the Belgian folklore character Tchantchès.
[8] Between 2002 and 2014, numerous rotational lightcurves of Tchantchès had been obtained from photometric observations by American astronomer Brian Warner at his Palmer Divide Observatory in Colorado.
[6] Other lightcurves with a concurring period were obtained by French amateur astronomer Bernard Christophe in October 2002, and at the Palomar Transient Factory in California in July 2010 (U=2/2).
[12][15] According to the survey carried out by NASA's NEOWISE mission, Tchantchès measures 2.093 kilometers in diameter and its surface has an outstandingly high albedo of 1.000,[8][9] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.30 – a compromise value between 0.4 and 0.2, corresponding to the Hungaria asteroids both as family and orbital group – and calculates a diameter of 4.42 kilometers with an absolute magnitude of 13.7.
[4] In 2013, reviewing the photometric data obtained in October 2005, Brian Warner found evidence that Tchantchès is possibly an asynchronous binary asteroid.