Sentences with phrase «of asteroid families»

Related sites David Nesvorný's home page, with links to details of new study Simulations of birth and growth of asteroid families

Many asteroids there had already been flagged as members of asteroid families — that is, vestiges of the same smashed asteroids.

Members of an asteroid family, which originate from a single asteroid, have similar traits, like how dark or bright they are.

In particular, DeMeo points out that Delbo and his team were looking at one type of asteroid family — the dark asteroids on the inner side of the belt.

Not exact matches

Identification of a primordial asteroid family constrains the original planetesimals population.

Astronomers can recognize a fleet of asteroids as belonging to a family because of their similar orbits and chemical makeup.

Researchers had previously traced the meteor to the Apollo asteroid family, but no one had matched it to a particular member of the group.

The asteroid is part of a family of bodies that show other hints of ice.

This mechanism has come to light in a group of about a dozen asteroids, called the Koronis family, between Mars and Jupiter.

But that has changed thanks to the discovery of a family of «dark» asteroids in the region, reported today in Science.

By aggregating the sizes of the modern dark asteroids, researchers suggest the original dark planetesimals formed about 4 billion years ago, making this one of the oldest asteroid families in the main belt; most asteroid families are thought to have formed about 1 billion years ago.

The giant planet migration shook up the asteroid belt, removing many bodies, possibly including the parent of this family.»

«We identified all known families and their members and discovered a gigantic void in the main belt, populated by only a handful of asteroids.

The resulting paper, «Identification of a primordial asteroid family constrains the original planetesimal population,» appears in the August 3, 2017, online edition of Science.

«By identifying all the families in the main belt, we can figure out which asteroids have been formed by collisions and which might be some of the original members of the asteroid belt,» said SwRI Astronomer Dr. Kevin Walsh, a coauthor of the online Science paper detailing the findings.

The team used a new search technique that also identified the oldest known asteroid family, which extends throughout the inner region of the main asteroid belt.

Identifying the very oldest asteroid families, those billions of years old, is challenging, because over time, a family spreads out.

Astronomers have identified the oldest asteroid families and, by process of elimination, the oldest intact asteroids in the main belt.

«Primordial asteroids discovered: Discoveries include a void in the main belt and the oldest family of asteroids.»

This force can cause asteroids to drift widely over time, making it difficult to identify families of fragments leftover after asteroid collisions eons ago.

The team used a novel technique, searching asteroid data from the inner region of the belt for old, dispersed families.

It is the first comet - like object seen in the Hygiea family of asteroids.

This plot of roughly 45,000 asteroids that orbit between Mars and Jupiter reveals «families» of asteroids that share characteristics such as chemical composition (colors), orbit size (horizontal axis) and orbit tilt (vertical axis).

The extreme violence of those crashes, it turns out, is not enough to completely sever asteroid family ties.

The rock has an elliptical orbit that is typical of the Apollo family of near - Earth orbiting asteroids, and it likely came from the same broad source region as the Lost City, Peekskill and Buzzard Coulee meteorites, the researchers said.

Update on 20 September 2011: Infrared observations by NASA's WISE satellite suggest a member of the Baptistina family of asteroids could not have been responsible for the impact that killed the dinosaurs

The visit should also help clear up which family of asteroids Lutetia belongs to — the C - type of primitive carbonaceous bodies or the more metallic M - type asteroids.

The images of the corona will also allow the team to search for a hypothesized family of asteroids called vulcanoids.

A rain of asteroids hurled into the inner solar system by a wandering Jupiter could have swept up a family of large rocky planets huddled up close to the sun, researchers report online March 23 in the Proceedings of the National Academy of Sciences.

Dr. Chapman has been the Principal Investigator of many NASA and NSF grants and has been P.I. of research concerning the Late Heavy Bombardment of the Moon (and inner solar system), astronomical observations of very young asteroid families, analysis of NEAR Shoemaker images of Eros, studies of secondary cratering on Mars, and investigations of the cratering records of the Galilean satellites.

What's more, the close, roughly circular orbits of Phobos and Deimos are inconsistent with the idea that they were once asteroids that were strong - armed into joining the Martian family by the Red Planet's gravitational clout.

Realising the issues with this, we contacted the family and instead named one of the asteroids that the Siding Spring Survey had discovered.

Given the angle of this family's V - shaped leg, they estimate this primordial asteroid family is 4 billion years old.

Because smaller chunks of asteroids drift from the point of collision faster than larger pieces do, these asteroid families become shaped like the letter «V.» Smaller pieces spread out far and wide from the original impact site, while larger fragments remain condensed at the point.

Older asteroid families are harder to find, but this V signature can expose the age of these clusters.

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