Discovery date 26 January 1960 Discovered 26 January 1960 | MPC designation 1741 Giclas Observation arc 62.83 yr (22,949 days) Orbits Sun | |
Alternative names 1960 BC · 1953 UY1953 VH1 · 1953 XN1963 YD Similar Sun, 208 Lacrimosa, 277 Elvira, 9916 Kibirev, 532 Herculina | ||
1741 Giclas, provisional designation 1960 BC, is a stony Koronian 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.
The S-type asteroid is a member of the Koronis family, a group consisting of about 200 known bodies. It orbits the Sun at a distance of 2.7–3.1 AU once every 4 years and 11 months (1,789 days). 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.
It has a rotation period between 2.92 and 3.107 hours with an brightness variation between 0.10 and 0.15 magnitude (U=3-/3/3/2). 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 based on an absolute magnitude of 11.5.
This minor planet was named in honour of American astronomer Henry Lee Giclas (1910–2007), longtime staff member of the Lowell Observatory in Flagstaff, Arizona, where he discovered 17 minor planets and the comet 84P/Giclas. Giclas responsibility included the programs of minor planet positions and stellar proper motions, using the 13-inch Lawrence Lowell Telescope. Naming citation was published before November 1977 (M.P.C. 3934).