Английская Википедия:2006 QQ23
Шаблон:Use British English Шаблон:Use dmy dates Шаблон:Infobox planet
Шаблон:MpШаблон:Efn is a sub-kilometre asteroid, classified as a near-Earth object of the Aten group that is potentially hazardous only as the orbit evolves over millennia. It was first observed on 21 August 2006 by the Siding Spring Survey.[1][2] On 10 August 2019, the object safely passed Шаблон:Convert from Earth.[3][4] With a 12 year observation arc it has a well determined orbit and is not a threat for the foreseeable future.[3]
Discovery
Шаблон:Mp was first observed on 21 August 2006[5] by the Siding Spring Survey, at the Siding Spring Observatory in Australia.[1][2]
Orbit and classification
Шаблон:Mp is classified as an Aten asteroid, which means that it is a near-Earth asteroid that crosses Earth's orbit at two points and has an orbital period of less than a year. Because it will come within 0.05 au of the Earth (MOID) and has an absolute magnitude (H) brighter than 22,[6] Шаблон:Mp is labelled as a potentially hazardous object.[1][2] With a 12 year observation arc it has a well determined orbit and is not a threat for the foreseeable future.[3]
It orbits the Sun at a distance of 0.57–1.03 au in less than 9 months (263 days; semi-major axis of 0.80 au). Its orbit has an eccentricity of 0.28 and an inclination of 3.4° with respect to the ecliptic.[2] The body's observation arc begins with its first observation at the Siding Spring Observatory on 21 August 2006.[1]
Close approach in 2019
On 10 August 2019 at 7:23 am UTC,[4] Шаблон:Mp safely passed Шаблон:Convert from Earth;[5][7] travelling at around Шаблон:Convert[5][8] The asteroid was recovered on 14 July 2019, which extended the observation arc from 8 years to 12 years, and therefore it had a very small uncertainty in the 2019 approach.[1] The uncertainty region in the close approach was ±60 km.[3]Шаблон:Efn
Physical characteristics
Based on its absolute magnitude of 20.1,[1] Шаблон:Mp is estimated to have a diameter of 250–570 metres using an assumed albedo between 0.05 (carbonaceous) and 0.26 (siliceous).[9][10]
Notes
References
External links
- MPEC 2009-P41 : 2006 QQ23, Minor Planet Electronic Circular
- List Of Aten Minor Planets (by designation), Minor Planet Center
- List of the Potentially Hazardous Asteroids (PHAs), Minor Planet Center
- PHA Close Approaches To The Earth, Minor Planet Center
- Шаблон:NeoDys
- Шаблон:JPL small body
Шаблон:Small Solar System bodies
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