Discovery [1] [2] | |
---|---|
Discovered by | WISE |
Discovery site | Low Earth orbit |
Discovery date | 17 May 2010 (first observation only) |
Designations | |
2016 AJ193 | |
2010 KV134 | |
NEO · Apollo · PHA [3] | |
Orbital characteristics [3] | |
Epoch 1 July 2020 ( JD 2459396.5) | |
Uncertainty parameter 0 | |
Observation arc | 11.51 yr (4,204 days) |
Earliest precovery date | 16 February 2010 |
Aphelion | 5.931 AU |
Perihelion | 0.5999 AU |
3.265 AU | |
Eccentricity | 0.8163 |
5.90 yr (2,155 days) | |
344.173 ° | |
0° 10m 1.359s / day | |
Inclination | 22.570° |
331.285° | |
81.996° | |
Earth MOID | 0.01553 AU (2,323,000 km) |
Physical characteristics | |
Mean diameter | 1.374±0.403 km [3] |
3.508±0.001 h [4] | |
0.031±0.031 [3] | |
18.99 [3] [1] | |
(620094) 2016 AJ193 ( provisional designation 2016 AJ193; also known as 2010 KV134) is a near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.4 kilometres (0.87 mi) in diameter. It was discovered on 17 May 2010 by the Wide-field Infrared Survey Explorer (WISE) satellite, but was lost until it was reobserved on 16 January 2016. [5] [2] With an observation arc over 11 years, 2016 AJ193 has a well-determined orbit and trajectory through the year 2086. [3] The asteroid's orbit is only potentially hazardous on a time scale of thousands of years. [6] [7]
On 21 August 2021, the asteroid safely made a close approach to Earth from a distance of 0.0229 AU (3.43 million km; 2.13 million mi), or 8.92 lunar distances (LD). During closest approach, 2016 AJ193 reached a peak apparent magnitude of 14, visible to ground-based observers with telescope apertures of at least 20 cm (8 in). [4] [6] It is the largest asteroid that approached within 10 LD (3.8 million km; 2.4 million mi) of Earth in 2021. [8]
The asteroid received the permanent minor planet number 620094 by the Minor Planet Center on 7 April 2023. [9]