It was discovered on 11 January 1986, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona.
[3] Between 2004 and 2015, several rotational lightcurves of Archieroy have been obtained from photometric observations by American astronomers Brian Warner at his Palmer Divide Observatory, Colorado, and Robert Stephens at the Center for Solar System Studies, California.
Lightcurve analysis[a] gave a well-defined rotation period between 12.16 and 12.187 hours with a high brightness variation of 0.34 to 0.47 magnitude (U=3-/3/3/3).
[8][9][10][11] According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Archieroy measures between 5.75 and 6.78 kilometers in diameter, and its surface has an albedo between 0.19 and 0.37,[5][6][7] 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 6.38 kilometers, with an absolute magnitude of 12.9.
His research included the restricted and general three-body problems, high-order Taylor series and the long-term stability of and the orbital resonances in the Solar System.