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Fastest orbiting asteroid discovered

Dragon
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Fastest orbiting asteroid discovered Empty Fastest orbiting asteroid discovered

Post by Dragon Tue Aug 24, 2021 3:29 am

Using the powerful 570-megapixel Dark Energy Camera (DECam) in Chile, astronomers just ten days ago discovered an asteroid with the shortest orbital period of any known asteroid in the Solar System.

The orbit of the approximately 1-kilometer-diameter asteroid takes it as close as 20 million kilometers (12 million miles or 0.13 au), from the Sun every 113 days.

Asteroid 2021 PH27, revealed in images acquired during twilight, also has the smallest mean distance (semi-major axis) of any known asteroid in our Solar System—only Mercury has a shorter period and smaller semi-major axis.

The asteroid is so close to the Sun's massive gravitational field, it experiences the largest general relativistic effects of any known Solar System object.


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Fastest orbiting asteroid discovered 334pu7m
Dragon
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Post by Dragon Tue Aug 24, 2021 3:30 am

Fastest orbiting asteroid discovered Fastest-orbiting-aster
Credit: CTIO/NOIRLab/NSF/AURA/J. da Silva

This artist’s rendering shows the asteroid (above) and the planet Mercury (below).


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Fastest orbiting asteroid discovered 334pu7m
Dragon
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Post by Dragon Tue Aug 24, 2021 3:32 am

Fastest orbiting asteroid discovered Fastest-orbiting-aster-1
Credit: CTIO/NOIRLab/NSF/DOE/DECam/AURA/S.S. Sheppard (Carnegie Institution of Science)

The fastest orbital period asteroid in the Solar System has been discovered at NOIRLab’s CTIO using the powerful 570-megapixel Dark Energy Camera (DECam) in Chile — the Sun’s new nearest neighbor.

The asteroid was imaged inside Mercury’s orbit and has been colored red and blue to show the two different times where it was imaged on the discovery night of 13 August 2021 — just three minutes apart.


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Fastest orbiting asteroid discovered 334pu7m
Dragon
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Fastest orbiting asteroid discovered Empty Re: Fastest orbiting asteroid discovered

Post by Dragon Tue Aug 24, 2021 3:34 am

Fastest orbiting asteroid discovered Fastest-orbiting-aster-2
Credit: CTIO/NOIRLab/NSF/AURA/J. da Silva (Spaceengine)

The fastest orbital period asteroid in the Solar System has been discovered at NOIRLab’s CTIO using the powerful 570-megapixel Dark Energy Camera (DECam) in Chile — the Sun’s new nearest neighbor.

The illustration shows the locations of the planets and the asteroid on the discovery night of 13 August 2021, as they would be seen from a vantage point in the plane of the Solar System.

The relatively high inclination of 32 degrees means the asteroid could be an extinct comet from the outer Solar System that got captured into a short period orbit when passing near one of the terrestrial planets.

Future observations will shed more light on its origins.


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Fastest orbiting asteroid discovered 334pu7m
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Fastest orbiting asteroid discovered Empty Re: Fastest orbiting asteroid discovered

Post by Dragon Tue Aug 24, 2021 3:35 am



'Fastest orbiting asteroid' in our solar system - 5-year time-lapse animated

Asteroid 2021 PH27 orbits the sun in 113 days.

It has the shortest orbital period of any known asteroid in the Solar System," according to NSF's Noir Labs.


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Fastest orbiting asteroid discovered 334pu7m

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