Trojan asteroids orbit the Sun near Jupiter. Astronomers observe the phenomenon for the first time when
The unexpected guest belongs to the class of icebodies discovered in space between Jupiter and Neptune. Such comet-like objects are called “centaurs.” They first become active when they warm up as they approach the Sun, and dynamically become more like comets.
Visible light photographs taken by spaceNASA's Hubble Telescope show that the wandering object has signs of cometary activity - a tail, the release of gases in the form of jets and an enveloping coma of dust and gas. Previous observations by NASA's Spitzer Space Telescope have provided clues to the composition of the comet-like object and the gases that drive its activity.
Computer simulation carried outThe research team shows that an icy object called P / 2019 LD2 (LD2) likely swung towards Jupiter about two years ago. Then the planet gravitationally struck the guest into orbit of the Trojan asteroid group.
While LD2's location is surprising, scientists wonder whether this pit stop might be a common occurrence for some comets heading toward the Sun.
An unexpected guest is likely to be lateamong the asteroids. Computer simulations show that it will collide with Jupiter again in about two years. The huge planet will "push" the comet again and it will continue its journey in the inner region of the solar system.
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