1741 Giclas
| Discovery | |
|---|---|
| Discovered by |
Indiana University (Indiana Asteroid Program) |
| Discovery site | Goethe Link Obs. |
| Discovery date | 26 January 1960 |
| Designations | |
| MPC designation | 1741 Giclas |
|
Named after
|
Henry Giclas (astronomer) |
| 1960 BC · 1953 UY 1953 VH1 · 1953 XN 1963 YD |
|
| main-belt · Koronis | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.83 yr (22,949 days) |
| Aphelion | 3.0880 AU |
| Perihelion | 2.6812 AU |
| 2.8846 AU | |
| Eccentricity | 0.0705 |
| 4.90 yr (1,789 days) | |
| 337.42° | |
| 0° 12m 4.32s / day | |
| Inclination | 2.8876° |
| 55.514° | |
| 338.90° | |
| Physical characteristics | |
| Dimensions |
12.501±0.245 km 13.11±0.18 km 13.60 km (calculated) 15.06±1.04 km |
|
2.92±0.02 h 2.938±0.001 h 2.943±0.001 h 3.107±0.005 h |
|
| 0.24 (assumed) 0.260±0.049 0.265±0.039 0.374±0.048 0.3742±0.0483 |
|
| S | |
| 11.11±0.04 (R) · 11.2 · 11.36±0.13 · 11.49 · 11.5 | |
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.
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