| Discovery[1] | |
|---|---|
| Discovered by | C. Shoemaker E. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 13 May 1991 |
| Designations | |
| (21062) Iasky | |
Named after | Robert Iasky[1] (Australian geophysicist) |
| 1991 JW1 · 1990 EO9 2000 AE168 | |
| main-belt[1][2] · (outer) background[3][4] | |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 35.85yr (13,093 d) |
| Aphelion | 3.1471AU |
| Perihelion | 2.9420 AU |
| 3.0445 AU | |
| Eccentricity | 0.0337 |
| 5.31 yr (1,940 d) | |
| 316.99° | |
| 0° 11m 7.8s / day | |
| Inclination | 23.571° |
| 149.18° | |
| 221.51° | |
| Physical characteristics | |
| 19.034±0.210 km[5] | |
| 0.063±0.004[5] | |
| 12.4[1][2] | |
21062 Iasky (provisional designation1991 JW1) is a dark backgroundasteroid from the outer regions of theasteroid belt, approximately 19 kilometers (12 miles) in diameter. It was discovered on 13 May 1991, by American astronomersCarolyn andEugene Shoemaker at thePalomar Observatory in California. It was named for Australian geophysicistRobert Iasky.[1]
Iasky is a non-family asteroid from the main belt'sbackground population.[3][4] It orbits the Sun in theouter asteroid belt at a distance of 2.9–3.1 AU once every 5 years and 4 months (1,940 days;semi-major axis of 3.04 AU). Its orbit has aneccentricity of 0.03 and aninclination of 24° with respect to theecliptic.[2] The body'sobservation arc begins in November 1982, with its first observations taken by theSiding Spring Observatory and published with theDigitized Sky Survey later on.[1]
Thisminor planet was named after Australian geophysicistRobert Iasky (born 1956), who discovered the 120-kilometer-sizedWoodleigh crater in theCarnarvon Basin of Western Australia while working with theGeological Survey of Western Australia.[1] The officialnaming citation was published by theMinor Planet Center on 1 May 2003 (M.P.C. 48396).[6]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer, Iasky measures 19.034 kilometers in diameter and its surface has analbedo of 0.063,[5] which is typical for a carbonaceousC-type asteroid. As of 2018, no rotationallightcurve of Iasky has been obtained fromphotometric observations. The body'srotation period,pole and shape remain unknown.[2][7]
