brightness amplitude of magnitude (). Observations in March 2011, by Luca Strabla, Ulisse Quadri and Roberto Girelli at Bassano Bresciano Observatory gave a period of hours with an amplitude of magnitude (). Additional period determinations of and were made by Eric Barbotin and Raoul Behrend in November 2019, and by Pierre Antonini in March 2011 (). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE) and the Japanese Akari satellite, Jucunda measures and kilometers in diameter and its surface has an albedo of and , respectively. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 27.90 kilometers based on an absolute magnitude of 11.5. Additional measurements were published by the WISE team (all of them have larger diameters with lower albedos). They are: (2011), (2012) and (2016) with the corresponding albedos of , and , respectively. References External links Lightcurve Database Query (LCDB), at www.minorplanet.info Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 000948 Discoveries by Karl Wilhelm Reinmuth Named minor planets 19210303