Between 2003 and 2014, three rotational
lightcurves of
Hollandia were obtained from photometric observations taken by French amateur astronomer
René Roy, Jason Sauppe at
Oakley Observatory and Maurice Clark at
TTU's Preston Gott Observatory. Lightcurve analysis gave a
rotation period between 5.360 and 5.568 hours with a brightness variation of 0.15–0.35
magnitude (). According to the surveys carried out by the Japanese
Akari satellite, and NASA's
Wide-field Infrared Survey Explorer with its subsequent
NEOWISE mission,
Hollandia measures between 20.48 and 27.727 kilometers in diameter, and its surface has an
albedo between 0.086 and 0.135. The
Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 – a compromise value that lies in between the albedos for
carbonaceous (0.057) and for
stony (0.20) asteroids – and calculates a diameter of 25.32 kilometers using an
absolute magnitude of 11.1. == Naming ==