9931 Herbhauptman

It was discovered on 18 April 1985, by Czech astronomer Antonín Mrkos at the Kleť Observatory in former Czechoslovakia.

[3][9] In 2014, two rotational lightcurves of Herbhauptman have been obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California.

[7][8] Lightcurve analysis gave a rotation period of 4.438 and 4.44 hours with a brightness amplitude of 0.15 and 0.21 magnitude, respectively (U=2/2).

[3] According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Herbhauptman measures 5.179 kilometers in diameter and its surface has an albedo of 0.239,[5][6] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20 and calculates a diameter of 4.54 kilometers based on an absolute magnitude of 14.08.

[3] This minor planet was named after American mathematician Herbert A. Hauptman (1917–2011), who was awarded with the Nobel Prize in Chemistry for developing direct methods for the determination of crystal structures in 1985.