_Cuyo.png) Modelled shape ofCuyo from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | C. U. Cesco A. G. Samuel |
| Discovery site | El Leoncito Complex |
| Discovery date | 1 January 1968 |
| Designations | |
| (1917) Cuyo | |
Named after | Universidad Nacional de Cuyo[2] |
| 1968 AA | |
| NEO · Amor[1][3] | |
| Orbital characteristics[3] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.08yr (23,769 d) |
| Earliestprecovery date | 6 May 1954 |
| Aphelion | 3.2353AU |
| Perihelion | 1.0624 AU |
| 2.1488 AU | |
| Eccentricity | 0.5056 |
| 3.15 yr (1,151 d) | |
| 129.40° | |
| 0° 18m 46.44s / day | |
| Inclination | 23.962° |
| 188.31° | |
| 194.53° | |
| Earth MOID | 0.0716 AU (27.8938LD) |
| Physical characteristics | |
| 5.7 km[4] | |
| 2.6890 h[5] | |
| 0.195±0.032[4] | |
| SMASS = Sl[3] | |
| 13.9[3] 14.3[1] | |
1917 Cuyo (prov. designation:1968 AA) is an stonyasteroid andnear-Earth object of theAmor group, approximately 5.7 kilometers (3.5 miles) in diameter. It was discovered on 1 January 1968, by astronomerCarlos Cesco andA. G. Samuel atEl Leoncito Observatory, Argentina.[3]
Cuyo orbits the Sun at a distance of 1.1–3.2 AU once every 3 years and 2 months (1,151 days;semi-major axis of 2.15 AU). Its orbit has aneccentricity of 0.51 and aninclination of 24° with respect to theecliptic.[3]
Thisminor planet is named in honor of theUniversidad Nacional de Cuyo, which operated the observatory at El Leoncito in collaboration with Columbia and Yale University.Cuyo is also the name of a region in central-west Argentina.[2] The officialnaming citation was published by theMinor Planet Center on 1 June 1975 (M.P.C. 3828).[6]
SMASS classificationCuyo is a stony Sl-type.[3] In 1989,Cuyo was detected withradar from theArecibo Observatory at a distance of 0.17AU. The measuredradar cross-section was 2.5 km2.[7] According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Cuyo measures 5.7 kilometers in diameter and its surface has analbedo of 0.195.[3]
