First-Ever Asteroid With Rings Knocks Astronomers For A Loop

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PostThu Mar 27, 2014 8:29 am » by -Marduk-


First-Ever Asteroid With Rings Knocks Astronomers For A Loop

When astronomers got a rare look at an asteroid passing in front of a distant star last year, they discovered something rarer still: the first asteroid with rings.


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Telltale variations in light show that the space rock, known as Chariklo, has two dense, narrow rings. That makes it only the fifth ringed world known to exist in the solar system, after Saturn, Jupiter, Uranus and Neptune. "We weren't looking for a ring and didn't think small bodies like Chariklo had them at all, so the discovery — and the amazing amount of detail we saw in the system — came as a complete surprise!" Felipe Braga-Ribas of Brazil's Observatorio Nacional/MCTI said in a news release announcing the find. Braga-Ribas planned the campaign to observe Chariklo, and he's also the lead author of a paper on the asteroid's rings published in Thursday's issue of the journal Nature.

Chariklo, a 160-mile-wide (258-kilometer-wide) world named after a nymph in Greek mythology, orbits between Saturn and Uranus and is the largest of a class of objects known as Centaurs. Astronomers calculated that Chariklo would eclipse the star UCAC4 248-108672 on June 3, 2013, as seen from South America. So they flocked to several southern locations to catch the show.

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An artist's conception shows the icy asteroid Chariklo and its rings, which are 4 miles and 2 miles (7 kilometers and 3 kilometers) wide and separated by a 6-mile-wide (9-kilometer-wide) gap. The ring system extends about 500 miles (810 kilometers) in diameter.

Braga-Ribas and his colleagues recorded the dip in starlight as the asteroid passed over — as well as two additional dips, a few seconds before and again a few seconds after the main event. That's what tipped them off about the rings. Astronomers suggest that the rings (nicknamed Oiapoque and Chu', after rivers in Brazil) are made up of debris left over from a cosmic collision (like the one thought to have given rise to Earth's moon). The fact that the rings are so sharply confined suggests that "shepherd moons" may be keeping them in line.

"It's likely that Chariklo has at least one small moon still waiting to be discovered," Braga-Ribas said.

Braga-Ribas is among 64 authors of the Nature paper, titled "A Ring System Detected Around the Centaur (10199) Chariklo."

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PostThu Mar 27, 2014 9:09 am » by Slith


Good stuff!

I like the artists conception. :flop:
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THIS is is a thread you lock and ban me for you retarded goat!

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PostThu Mar 27, 2014 9:17 am » by Fatdogmendoza


Ive done this already

Fatdogmendoza wrote:Brazlian researchers discover asteroid with rings


The European Southern Observatory announced this week the discovery of rings around an asteroid 1.4 billion miles from Earth. Chariklo is the largest of the class of asteroids orbiting the sun between Saturn and Uranus known as Centaurs. Results were published online today in the journal Nature.

Rings are not an unusual feature in the solar system. Each of the outer planets: Jupiter, Uranus, Neptune and of course Saturn have rings. However Chariklo is the smallest ringed body found to date.

Just 160 miles wide, Chariklo's ring system spans 12 miles with a five-mile gap between two dense rings.

"We weren't looking for a ring and didn't think small bodies like Chariklo had them at all, so the discovery – and the amazing amount of detail we saw in the system – came as a complete surprise!" says Felipe Braga-Ribas (Observatório Nacional/MCTI) author of the paper.

Researchers observed Chariklo during a June 2013 occultation visible only from South America. As the asteroid passed in front of star UCAC4 248-108672, the star's brightness dimmed as expected. However it also dimmed seconds before and after. Comparisons of observations made from seven telescopes allowed researchers to construct a detailed view of the asteroid as well as the shape, width and orientation of the rings.

The rings, provisionally named Oiapoque and Chuí for rivers in Brazil, may be debris created by a past collision.

"So, as well as the rings, it's likely that Chariklo has at least one small moon still waiting to be discovered," added Ribas.




But it got swallowed up (merged) in this pile of Shit thread below.

nibiru-found-t92261.html

:flop:

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PostThu Mar 27, 2014 9:45 am » by -Marduk-


Nibiru found?

HA

that's really a SLIGHTLY misleading thread title for such a cool discovery, FD.

:lol:
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PostThu Mar 27, 2014 10:12 am » by Fatdogmendoza


-Marduk- wrote:Nibiru found?

HA

that's really a SLIGHTLY misleading thread title for such a cool discovery, FD.

:lol:



Just ever so slightly... :lol:

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PostThu Mar 27, 2014 10:14 am » by Evildweeb


.

Evidently its a good topic with multiple different titles......LOL


major-discoveries-in-our-solar-system-t92267.html


:flop:


:cheers:


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PostSat Apr 05, 2014 6:38 pm » by DarkHeart



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Published on Apr 4, 2014

A team of astronomers is puzzling over an unprecedented discovery--the first ever observed asteroid with its own ring system. The asteroid Chariklo, which is 250 km in diameter and orbits between Saturn and Uranus, displays two rings which are said to be similar in nature to those of Saturn. Wal Thornhill provides EU insight into the discovery.

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PostSat Apr 05, 2014 6:54 pm » by Slith


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Canubis wrote:
THIS is is a thread you lock and ban me for you retarded goat!



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