Английская Википедия:2019 BZ3
Шаблон:Use dmy dates Шаблон:Infobox planet
Шаблон:Mp is a very small near-Earth asteroid of the Apollo group, approximately Шаблон:Convert in diameter. It was first observed by the Mount Lemmon Survey on 28 January 2019, just hours after the asteroid's sub-lunar flyby of Earth at less than 0.12 lunar distance.[1][2]
Orbit and classification
Шаблон:Mp is an Apollo asteroid, the largest subgroup of near-Earth objects. It orbits the Sun at a distance of 0.96–3.6 AU once every 3 years and 6 months (1,268 days; semi-major axis of 2.29 AU). Its orbit has a high eccentricity of 0.58 and an inclination of 11° with respect to the ecliptic.[3] The body still has a high orbital uncertainty of 5 and 7, respectively.[1][3] Its observation arc of only 8 days begins with its official first observation at Mount Lemmon Observatory on 28 January 2019.[1]
Close approaches
Шаблон:Mp has an Earth minimum orbital intersection distance of Шаблон:Convert, which corresponds to 0.18 lunar distances (LD).[3] Due to its very small size, however, Шаблон:Mp is not a potentially hazardous asteroid, which are required to be approximately Шаблон:Convert in diameter, that is, to be brighter than an absolute magnitude of 22.
- Flybys
On 27 January 2019 at UTC 23:29, Шаблон:Mp passed Earth at a nominal distance of 48,130 km (0.125 LD) with a relative velocity of Шаблон:Val. Six hours later, it flew by the Moon at Шаблон:Val.[3][2] The object's next close approaches will occur on 17 December 2025 at a much greater distance of Шаблон:Convert, and on 29 January 2085 at Шаблон:Convert.[4]
Numbering and naming
This minor planet has not yet been numbered by the Minor Planet Center and remains unnamed.[1]
Physical characteristics
Шаблон:Mp has an undetermined spectral type. Based on a generic magnitude-to-diameter conversion, the asteroid measures approximately 6 meter in diameter for an assumed albedo of 0.15 and absolute magnitude 28.8.[5] The estimated diameter may vary between 5 and 10 meters depending on whether an albedo for a dark carbonaceous (0.05) or a bright stony (0.25) asteroid is assumed.[5]
See also
References
External links
- 2019 BZ3 -- Very small Apollo-class Asteroid, spacereference.org
- 2019 BZ3 Geometry, International Asteroid Warning Network
- MPEC 2019-B142: 2019 BZ3, MPC, 2019 Jan. 29, 12:24 UT
- Near-Earth Object Observations Program, 24 NASA, June 2019
- Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
- Шаблон:NeoDys
- Шаблон:ESA-SSA
- Шаблон:JPL small body
Шаблон:Small Solar System bodies Шаблон:Authority control
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