[사이테크+] “The 2 moons across the asteroid Dinkinesi are two rocks collectively.” – Yonhap Information

Supply time2024-05-30 00:00

Worldwide analysis crew confirms first asteroid ‘contact binary satellite tv for pc’… Clues to planet and asteroid formation course of”

(Seoul = Yonhap Information) Reporter Jooyoung Lee = The 2 satellites orbiting the asteroid Dinkinesh 152830, which had been first studied by NASA’s Lucy asteroid probe, had been found as two rocky lots over 200m in diameter -measures are united in a single loss.

A world analysis crew led by Dr. Harold Levison from the Southwest Analysis Institute (SwRI) within the US printed within the science journal Nature on the thirtieth that the moon of the asteroid Dinkinesi, which was initially thought as a twin moon, the ‘contact binary satellite tv for pc’ (binary communication satellite tv for pc) that was created when two rock tops collided It was confirmed as a binary satellite tv for pc).

The analysis crew stated that that is the primary time {that a} binary satellite tv for pc has been recognized round an asteroid, and that the invention of such an asteroid system signifies that the method of formation and growth of not solely the planets of the photo voltaic system but in addition small asteroids during which the asteroid belt could be way more advanced than beforehand acknowledged.

Lucy, which was launched in 2021 and is presently flying to review the ‘Jupiter Trojan asteroids’, a gaggle of asteroids round Jupiter, captured two rocks of the identical measurement orbiting Dinkinesi close to one another final November.

About 15% of near-Earth asteroids are estimated to have satellites, however the query of how an asteroid system with a moon might type and maintain itself stays unresolved.

Dinkinesi has a diameter of about 720m, and the satellite tv for pc consists of two rock blocks with a diameter of 210m and 230m, and Dinkinesi orbits as soon as each 52.7 hours in an orbit 3.1km away.

The analysis crew named this satellite tv for pc ‘Selam’. Selam is a feminine Australopithecus child fossil found in Ethiopia in 2000 and is named ‘Lucy’s Child’ in distinction to the sooner Lucy fossil.

Based mostly on the outcomes of the evaluation of pictures of Dinkinesi and Selam taken by Lucy concerning the method of the formation of the Dinkinesi asteroid system, the analysis crew concluded that rock fragments, and so forth. from the floor could have fallen into orbit as a result of fast rotation of Dinkinesi and uneven. the reflection of daylight on the floor.

Among the items of rock that fell from the floor gathered collectively to type the Selam satellite tv for pc, and the ridges and valleys captured within the image taken by Lucy had been fashioned on the floor the place the rocks fell.

“This little factor has a way more advanced construction than we thought,” stated Jessica Sunshine, a professor on the College of Maryland and co-author of the paper “We are able to now get nearer.” e.

Dr. Levison stated, “Planets had been principally fashioned when objects resembling asteroids orbiting the Solar collided,” and “To know how planets like Earth grew to become what they’re right now, it is very important perceive how objects behave after they behaved. they’re hitting,” he stated.

Launched on October 16, 2021, LUCY’s fundamental aim is to review the ‘Trojan Asteroids’, a gaggle of asteroids round Jupiter which have by no means been studied. Lucy plans to fly near the Earth subsequent December to get a transfer with the assistance of the Earth’s gravity, and she or he plans to review the asteroid ‘Donald Johansson’ within the asteroid belt in 2025 and the Trojan asteroids of the beginning in August 2027.

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2024/05/30 00:00 Despatched