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Mon, 26 Sep 2016
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Fireballs


Fireball 2

Huge meteor fireball filmed over Kent, UK


The fireball was spotted as far away as Holland.
A huge fireball shot across the sky late last night, shocking residents in Kent and being spotted as far east as Holland.

The flash of light, believed to be a meteor, was caught on camera at 11.34pm in Ash Vale, Surrey, by the UK Meteor Observation Network.

In the five second clip posted to YouTube, the fireball grows in size, burning brighter by the second before rapidly fizzling out.

An eyewitness said: "I saw it in Oxfordshire! I was fishing and it lit up the whole lake. Incredible.

"It's been seen as far west as South Wales and as far east as Holland!"

UK Meteor Network added: "As reported by the public, we recorded this stunning large fireball from our Ash Vale camera."


Comment: The American Meteor Society (AMS) has received 100 reports about a meteor fireball seen over Great Britain, France, Luxembourg, Belgium, Netherlands and Germany on 23rd September 2016.

© Google Maps/AMS
NASA space data supports citizens' observations that - meteor fireball activity is increasing dramatically!


Question

Slow-moving fireball photographed over London?

© Ali Osman
Ali Osman caught this strange burning orb over London on camera
Ali Osman was going through a daily routine with his one year old girl when he encountered the bizarre object outside his window.

Civil engineer Ali, from Erith, south east London, snapped these pictures of the orb, which resembles a massive fireball or flaming meteorite.

The married dad-of-one said: "I woke up with my daughter around 6am.

"I always have a look out the window in the mornings to show my daughter the birds and noticed this strange object in the sky.

"At first I thought it was a plane that leaves a trial behind it but realised quickly it wasn't because it was just hovering.

"There were other planes flying high near the object but the object was above the planes and was stationary.

Fireball 2

Meteor fireball shoots across Eastern Canada and US night sky

© Facebook/Mont-Mégantic provincial park
This meteor was seen as far west as Toronto and as far east as Edmundston, N.B., according to the American Meteor Society.
Skywatchers across Eastern Canada and the U.S. spotted an unexpected treat last night, as a meteor streaked across the sky.

The phenomenon was captured by a camera atop Quebec's Mont-Mégantic provincial park, about 80 kilometres east of Sherbrooke, Que., around 9:40 p.m. Wednesday.

Sébastien Giguère, scientific co-ordinator at the Mont-Mégantic Astrolab, confirmed Thursday morning that the fireball was indeed a meteor.

A meteor, also called a shooting star, is the light emitted from a meteoroid or an asteroid as it enters the atmosphere.

Meteors like ones seen during Perseid meteor showers are caused by particles that are the same size as a grain of sand or rice, Giguère explained. The bigger the particle, the bigger the meteor.

Last night's meteor was probably caused by something the size of a big rock, Giguère said.

"Hundreds of tonnes of meteorites fall through the sky every day," he said on Radio-Canada's C'est pas trop tôt. "But yesterday, it was nice out and [the meteor] was centred on southern Quebec. That happens once every one or two years, so it's not totally rare, but it doesn't happen every day."

Vicky Boldo, a resident of Sainte-Catherine-de-Hatley Que., said she saw the "spectacular sight" while sitting in her hot tub last night.

"It passed directly over us and lit the yard up like a football field — it seemed to be just up over our heads beyond the trees," she said in an email.


Info

5 new 'Neptune trojans' discovered

© Lin et al., 2016
The spatial distribution of all PS1 detected Trojans. The solid triangles are the newly discovered Neptune Trojans, and open triangles are the known ones detected by PS1. The positions of Neptune Trojans correspond to their first detections of PS1. The blue circles show the locations of Neptune from 2010 to 2013, and the crosses show the corresponding Lagrange points. Notice that the Galactic Center (GC) overlapped with L5 during 2010 to 2012.
An international team of astronomers led by Hsing-Wen Lin of the National Central University in Taiwan has detected five new so-called "Neptune trojans" - minor bodies sharing the same orbit as the planet Neptune. The discovery was made by the Pan-STARRS 1 (PS1) survey and is described in a paper published Sept. 15 on arXiv.org.

The PS1 survey, which utilizes the first Pan-STARRS (Panoramic Survey Telescope and Rapid Response System) telescope in Hawaii, designated PS1, is one of the best tools to search for Neptune trojans. The survey, lasting from May 2010 to May 2014, has made a strong contribution to knowledge of the solar system's minor bodies due to its very wide survey area and its optimized cadence for searching moving objects.

"PS1 survey has a very wide survey area that is deep enough to cover a large part of the Neptune trojan cloud. PS1 currently is the only one with the capability to detect several Neptune trojans in a single survey," Lin told Phys.org.

The researchers found four new L4 trojans, meaning that they orbit Neptune's L4 Lagrangian point 60 degrees ahead of Neptune; they also found one L5 trojan - orbiting the L5 region 60 degrees behind the planet. The newly detected objects have sizes ranging from 100 to 200 kilometers in diameter.

What drew the attention of the astronomers is the fact that the new L5 trojan is dynamically more unstable than the other four, indicating that it could be temporarily captured into the Neptune trojan cloud.

Fireball 2

Bright meteor fireball observed over Hampshire, UK

© YouTube/Hampshire Astronomical Group (screen capture)
M20160913 193941 Clanfield NW.
Reported by Neil Morrison and subsequently identified on the Observatory video cameras.


Fireball 2

30 tonne meteorite discovered in Argentina

© Compacto Nea
Scientists have discovered a meteorite weighing over 30 tonnes in northern Argentina. The meteorite was found in the town of Gancedo, 1,085 km north of capital Buenos Aires, Mario Vesconi, president of the Astronomy Association of Chaco, said on Monday.

"While we hoped for weights above what had been registered, we did not expect it to exceed 30 tons," Vesconi said, adding that "the size and weight surprised us", Xinhua news agency reported.

"It was in Campo del Cielo, where a shower of metallic meteorites fell around 4,000 years ago," Vesconi added.

The meteorite will be weighed again to ensure an accurate measurement.

The largest meteorite ever found is called Hoba, weighing 66 tonnes in Namibia, Africa.


Fireball 3

Meteor fireball whizzes past Cyprus and explodes, lighting up night sky


File photo
A suspected meteorite did a close fly-by over Cyprus early on Friday, sending people into consternation over a blitz of bright lights which appeared in the night sky coupled with large bangs.

"It had a 45 degree tilt and a bang was heard as it passed over Cyprus," said Ioannis Fakas, the honorary chairman of the Cyprus astronomical society.

People living in the mountainous Troodos range reported green-white glows in the sky at around one in the morning, then large blasts, police said. Some reported the ground shook.

Parts of the meteorite were thought to have fallen into the sea north of Cyprus, Fakas told state TV.


Comment: ‌This is the meteor's reported trajectory over Cyprus. In the capital Nicosia, an explosion was heard 2.5 minutes after the fireball was seen:
© sigmalive.com



Fireball 4

Meteor sighting reported across Virginia

Richmond — Numerous viewers reached out to WTVR CBS 6 after reporting seeing something strange in the sky Thursday evening.

David Livingston said he was stopped at an intersection in the West End around 6 p.m. when he saw a bright light in the southwest sky.

"It was very bright and green and possibly made it all the way to the ground," Livingston said.

Rhonda Sams from Cartersville also saw something she believed was a meteor or possibly space debris.

"My husband, son, and I were looking south toward Cumberland County and Route 60. It could have actually fell in Amelia County," Sams wrote. "Don't know what it was but it was bright and burning."

K. Learning said she was driving on I-95 south near the Doswell exit around 6 p.m. when she saw something bright in the sky.

"There was what looked like a ball of fire seen going at a rapid speed," Learning said. "The direction it was seen going was southwest."

Christy Dalton was driving on Route 288 when she reported seeing something "fall out of the sky."

‎Brian Hobbs‎ also reported seeing the bright light.

"There was a long smoke trail left behind that dissipated very slowly," Hobbs‎ wrote. "Really a neat thing to see."

Fireball 5

Asteroid 2016 RB1 to flyby Earth at 0.1 Lunar Distance on September 7

The asteroid 2016 RB1 was discovered (at ~ magnitude +19) on 2016, September 05 by Mt. Lemmon Survey (MPC code G96) with a 1.5-m reflector + 10K CCD.

Asteroid 2016 RB1 has an estimated size of 7.3 m - 16 m (based on the object's absolute magnitude H=27.8) and it will have a close approach with Earth at about 0.1 LD (Lunar Distances = ~384,000 kilometers) or 0.0003 AU (1 AU = ~150 million kilometers) on 2016, September 7 at 17:20UT and it will reach a peak magnitude of about +12.3. Radio astronomers will try to observe it as 2016 RB1 could be a really strong radar target during its close approach.

I performed some follow-up measurements of this object on 2016, September 07.6, remotely from the Q62 iTelescope network (Siding Spring, Australia) through a 0.4-m f/3.5 reflector + CCD. Below you can see our image taken with the asteroid at about magnitude +13 and moving at ~ 503 "/min. At the moment of its close approach on Sep 07, around 17UT, 2016 RB1 will move at ~ 2716 "/min (or about 45.2 deg/hour). The asteroid is trailed in the image due to its fast speed. Click on the image below to see a bigger version. (North is up, East is to the left).
© Remanzacco Blogspot

Fireball 2

Man says meteorite hit lone pear on tree in Massachusetts

© Metrowest Daily News
Framingham - First a late hard freeze robbed Steven Lovewell's Asian pear tree of most of its blossoms. Then the summer drought wiped out all but one lonely pear ripening on his tree. The final blow came swiftly and loudly - from a meteorite.

Lovewell, who lives on Grant Street, said he was awakened by a loud whooshing noise about 3 a.m. Tuesday. Later that morning he found his one Asian pear fruit on the ground with what he believes is a meteorite embedded in its flesh. The dark rocky object, about the size of a peach pit, protruded about halfway from the fruit.

Lovewell said he has been interested in astronomy and rocket science since he was a kid. He plans to reach out to the McAuliffe Center at Framingham State University to try and confirm his belief that his last Asian pear was knocked from the tree by an extraterrestrial object. In the meantime, the pear and meteorite are chilling in his freezer for safe keeping.