 Radar images of2016 AZ8 and its satellite by theArecibo Observatory in January 2019 | |
| Discovery[1] | |
|---|---|
| Discovered by | WISE |
| Discovery site | Earth orbit |
| Discovery date | 3 January 2016 |
| Designations | |
| 2016 AZ8 | |
| NEO · Apollo[1][2] PHA[1][2] | |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 3.69yr (1,347 d) |
| Aphelion | 1.7895AU |
| Perihelion | 0.8516 AU |
| 1.3205 AU | |
| Eccentricity | 0.3551 |
| 1.52 yr (554 d) | |
| 99.623° | |
| 0° 38m 58.2s / day | |
| Inclination | 5.5862° |
| 90.016° | |
| 318.51° | |
| Knownsatellites | 1[3] |
| Earth MOID | 0.0295 AU (11.49LD) |
| Physical characteristics | |
| 215±52 m[2] | |
| 21.0[2] | |
2016 AZ8 is a sub-kilometerasteroid andnear-Earth object of theApollo group, at least 400 meters (1,300 feet) in diameter.[1][3] It was first observed on 3 January 2016, by theWISE telescope with precovery images found back in 2012.
Thepotentially hazardous asteroid is abinary system with aminor-planet moon in its orbit. The discovery was made by astronomers atArecibo Observatory on 4 January 2019, while2016 AZ8 was passing within 4,460,000 kilometers (0.0298 AU) of the Earth.[3] The binary has a secondary-to-primary diameter ratio of at least 0.3.[3]
2016 AZ8 orbits the Sun at a distance of 0.85–1.8 AU once every 18 months (554 days;semi-major axis of 1.32 AU). Its orbit has aneccentricity of 0.36 and aninclination of 6° with respect to theecliptic.[2] The body'sobservation arc begins with aprecovery taken at theSiding Spring Survey in July 2012, more than three years prior to its official discovery observation.[1]
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