[1] The first precovery was taken at La Plata Astronomical Observatory in 1950, extending the asteroid's observation arc by 36 years prior to its discovery.
[8] A rotational lightcurve of Alhambra was obtained from photometric observations made at the Australian Hunters Hill Observatory (E14) in March 2007.
According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Alhambra measures 6.5 and 6.8 kilometers in diameter and its surface has an albedo of 0.218 and 0.242, respectively,[4][5] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 6.5 kilometers with an absolute magnitude of 13.1.
[3] This minor planet was named for the Alhambra ("the red one"), the famous medieval palace and fortress complex of the Moorish emirs, located in Granada, Andalusia, Spain.
The place with its Islamic architecture is now a UNESCO World Heritage Site and one of Spain's major tourist attractions.