![]() 2020 BX12 and its satellite imaged by the Arecibo Observatory in February 2020 | |
Discovery [1][2] | |
---|---|
Discovered by | ATLAS-MLO |
Discovery site | Mauna Loa Obs. |
Discovery date | 27 January 2020 |
Designations | |
2020 BX12 | |
A10jUnf [3] | |
Apollo · PHA · NEO | |
Orbital characteristics [4] | |
Epoch 31 May 2020 (JD 2459000.5) | |
Uncertainty parameter 0 | |
Observation arc | 6.09 yr (2,224 days) |
Earliest precovery date | 5 January 2014 |
Aphelion | 2.4437 AU |
Perihelion | 0.7570 AU |
1.6004 AU | |
Eccentricity | 0.75704 |
2.02 yr (739.5 d) | |
34.442° | |
0° 29m 12.545s / day | |
Inclination | 40.067° |
132.904° | |
70.492° | |
Known satellites | 1 |
Earth MOID | 0.002061 AU |
Physical characteristics | |
>0.165 km[5] >165 m | |
<2.8 h[5] | |
0.3[5] | |
20.7[6] | |
20.631±0.396[4] | |
2020 BX12 is a sub-kilometer binary asteroid, classified as a near-Earth asteroid and potentially hazardous object of the Apollo group. It was discovered on 27 January 2020 by the Asteroid Terrestrial-impact Last Alert System survey at the Mauna Loa Observatory during its approach to Earth of 0.02915 AU (4.361 million km; 11.34 LD). Radar observations of the asteroid were carried out by the Arecibo Observatory on 4 February 2020, revealing a natural satellite orbiting 360 m (1,180 ft) from the primary body.[5][7]
MPEC-2020-B281
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