1117 Reginita
1117 Reginita ("prov. designation": ) is a stony background asteroid from the inner regions of the asteroid belt. It was discovered on 24 May 1927, by Catalan astronomer Josep Comas i Solà at the Fabra Observatory in Barcelona, Spain, who named it after his niece. The bright S-type asteroid has a notably short rotation period of 2.9 hours and measures approximately in diameter. Orbit and classification. "Reginita" is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the inner asteroid  belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,231 days; semi-major axis of 2.25 AU). Its orbit has an eccentricity of 0.20 and an inclination of 4° with respect to the ecliptic. The asteroid was first observed as at Heidelberg Observatory in October 1904. The body's observation arc also begins at Heidelberg in April 1930, almost three years after its official discovery observation at Barcelona. Naming. This minor planet was named after the niece of the discoverer. The was mentioned in "The Names of the Minor Planets" by Paul Herget in  1955 (). Physical characteristics. In the Tholen classification, "Reginita" is a common, stony S-type asteroid. Rotation period. Several rotational lightcurves of "Reginita" have been obtained from photometric observations since 1988. The consolidated lightcurve analysis gave a rotation period of 2.946 hours with a brightness amplitude between 0.10 and 0.33 magnitude (). Diameter and albedo. According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), "Reginita" measures between 9.82 and 11.22 kilometers in diameter and its surface has an albedo between 0.293 and 0.36. The "Collaborative Asteroid Lightcurve Link" adopts Petr Pravec's  revised WISE data, that is, an albedo of 0.3516 and a diameter of 10.29 kilometers based on an absolute magnitude of 11.69.