1741 Giclas
1741 Giclas is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 26 January 1960, by IU's Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States. It is named for astronomer Henry L. Giclas.
Orbit and classification
The S-type asteroid is a member of the Koronis family, a group consisting of about 200 known bodies. It orbits the Sun in the outer main-belt at a distance of 2.7–3.1 AU once every 4 years and 11 months. Its orbit has an eccentricity of 0.07 and an inclination of 3° with respect to the ecliptic. Its first used observation was taken at Goethe Link Observatory in 1953, extending the body's observation arc by 7 years prior to its official discovery observation.Physical characteristics
Rotation period
Between 2004 and 2014, several lightcurves of Giclas gave a rotation period between 2.92 and 3.107 hours with an brightness variation between 0.10 and 0.15 magnitude.Diameter and albedo
According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Giclas measures 12.50 and 15.06 kilometers in diameter, and its surface has an albedo in the range of 0.260 to 0.374.The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 and calculates a diameter of 13.60 kilometers with an absolute magnitude of 11.5.