Bronquote:Over the Adriatic Sea on Tuesday evening flew a meteor and illuminated the sky for a moment. The event was recorded by a camera in the Italian city of Ferrara.
Meteor that burned in the atmosphere was also captured by camera lens of Slovenian astronomers because it was visible above the western part of the country.
Italian media reported that one could hear a loud noise and that a strong flash was visible in the night sky.
Ontdekt op vrijdag de 13e...quote:Tiny Asteroid buzzing earth
A tiny asteroid discovered just last week is set to zip by Earth on Wednesday (Sept. 18), passing between our planet and the moon. It is small enough and distant enough that it poses no threat to people, scientists say.
Astronomers first observed the space rock, named 2013 RZ53, on Friday (Sept. 13), according to data from the Minor Planet Center, a clearinghouse of information on comets and asteroids based in Cambridge, Mass.
The asteroid measures only 3 to 10 feet (1 to 3 meters) across, and it is expected to pass at a safe distance of more than 148,000 miles (230,800 kilometers) away from Earth when it makes its closest approach on Wednesday at 6:20 p.m. EDT (22:20 GMT). (The moon orbits Earth at an average distance of 239,000 miles, or 384,600 km.)
bron: NOSquote:Boven Nederland is zaterdagavond om 21.18 uur een meteoor te zien geweest. Dat is een stuk puin uit de ruimte dat in de dampkring verbrandt. Volgens Alex Scholten van de Volkssterrenwacht in Bussloo ging de meteoor in noordelijke richting en is hij boven de Noordzee 'verdampt'.
Uit grote delen van Nederland komen meldingen van mensen die een opvallend heldere lichtbol hebben gezien in de lucht. De meeste meldingen komen uit Oost- en Noord-Nederland. Onder meer in Appingedam, Enschede, Hengelo en Leeuwarden hebben mensen een snel bewegende bal gezien met een witte, groene of blauwe staart.
Maar de meteoor is ook gezien in Haarlem en Alphen aan den Rijn. Uit Engeland en Duitsland komen eveneens meldingen. Verder is de meteoor te zien op opnames van amateursterrenkundigen in Oost-Kapelle in Zeeland en in Benningbroek bij Medemblik in Noord-Holland.
Op YouTube staat een filmpje waarop even een groenblauwe 'vallende ster' te zien is. Het filmpje is gemaakt op de A2 bij Culemborg. Op Twitter staan foto's van de meteoor.
Sander Kersloot zegt op Twitter "Gaaf hoor, #meteoriet met lange groen/blauwe staart van een seconde of 5. Over de Ketelbrug". Erik van der Wal schrijft: "Reed net op de A32 en zag wat volgens mij een meteoriet moet zijn geweest. Meer mensen die iets gezien hebben?"
Zei ik ook al in een ander topicquote:Op woensdag 22 januari 2014 13:31 schreef Frutsel het volgende:
Zou ISON dan de "oorzaak" kunnen zijn van die meteoor die van de week boven Nederland is gespot?
W&T / Enorme meteoriet met heldere blauwe staartquote:
quote:Large asteroid whizzed close to Earth
A gigantic asteroid has whizzed ‘close’ to Earth – around a year after another exploded over Russia, injuring hundreds of people.
The space rock, which measured around 270-metres (885 ft) wide, raced past the planet at about 27,000mph (43,000kph) around 3am CET on Tuesday.
The asteroid came within about 1.6 million miles (2.6m km) of Earth.
On February 15, 2013, a smaller asteroid, around 20m (65ft) in diameter, hit Earth over Chelyabinsk, Russia. Its massive impact shattered windows and damaged buildings, with the flying glass injuring around 1,200 people
A specialist robotic telescope service, which had hoped to capture pictures of Tuesday’s asteroid, failed to operate. The telescope, based at an observatory in the Canary Islands, broadcasts footage on slooh.com. But the equipment froze over, meaning the asteroid could not be captured.
Paul Cox, Slooh’s technical and research director, said: “We continue to discover these potentially hazardous asteroids – sometimes only days before they make their close approaches to Earth.
He added: “We need to find them before they find us!”
quote:Scientists probe meteor link to Argentina explosion
Buenos Aires — Scientists said Tuesday that a meteor crashing to earth could explain reports of an explosion in the Argentine countryside some 350 kilometers (250 miles) northwest of Buenos Aires.
The loud boom was reported at 10 am (1300 GMT) in Argentina's central-eastern province of Santa Fe.
"It's possible it was a meteor," said Andrea Clerici of the Buenos Aires Planetarium, speaking to local television.
Authorities have not yet found any meteor fragments, but "it is possible that the orb disintegrated in the air," astronomer Jorge Coghlan of the Santa Fe Astronomical Observatory told local radio.
Residents in the area who reported hearing a loud explosion Tuesday said that the ground and also buildings shook.
quote:Asteroid on course for close encounter with Earth
A recently discovered asteroid is on course to have a close encounter with the Earth today, coming closer than our Moon’s orbit.
The asteroid, dubbed 2014 DX 110, is about 100 feet in diameter and is set to come within 216,000 miles of Earth — a close shave by astronomical standards, considering our Moon orbits the Earth at a distance of about 238,900 miles.
While an object that size may not seem imposing, if it were to strike the Earth, it would release a devastating amount of energy greater than a nuclear weapon. The infamous asteroid that exploded over Tunguska, Siberia, on June 30, 1908, has been estimated to be about 30 meters to 60 meters — 100 feet to 200 feet — in diameter.
The closest approach of DX 110 will be at 4:07 p.m. ET today. And while it may not be visible to the naked eye, stargazers can follow its progress across the heavens virtually.
This won’t be DX 110′s only close shave with Earth. The asteroid has a one in 10,000 chance of colliding with the Earth on March 4, 2046, according to NASA’s Earth impact risk summary.
quote:'2014 UR 116 not an Earth Killer'
Newly-discovered asteroid 2014 UR116 is not an Earth killer as the U.S. space agency NASA maintains that the mountain-sized space object is hardly a threat to humanity
And that would be the case in the next century or beyond, according to Elizabeth Howell of the Universe Today. "Data from the Minor Planet Centre shows that the quarter-mile-wide asteroid 2014 UR116 won't pose a threat to Earth or any other planet in the next 150 years or more," Howell reported.
Possible collision with Earth
A team headed by Russian astrophysicist Vladimir Lipunov of the Moscow State University discovered 2014 UR116 October this year and estimated that it measured 370 metres in diameter. Calculations provided by Lipunov indicated too that the space object will fly dangerously near Earth every three years.
According to The Christian Science Monitor, Lipunov is convinced that 2014 UR116 is theoretically a threat to mankind mainly due its unpredictability, which explains why the rock was only recently detected.
In a video documentary posted on the Russian Space Agency website earlier this week, the Russian scientist insisted that 2014 UR116 could impact Mars, Venus and even Earth as the asteroid's trajectory can easily be influenced by the gravitational pull of these planets.
"We should track it constantly. Because if we have a single mistake, there will be a catastrophe. The consequences can be very serious," Lipunov was quoted by Russian news site RT.com as saying in the documentary.
The Russian expert pointed to what happened in Chelyabinsk, Russia last year that saw destruction and injuries when a meteor entered Earth undetected and hit the city.
That same meteor was described as bus-sized and it already caused considerable damages. With the 2014 UR116, the projected impact and explosion is 1000 times greater, Lipunov warned.
Hardly an Earth killer
NASA, however, is not buying into the arguments presented by Lipunov while conceding that "this approximately 400-meter sized asteroid has a three-year orbital period around the sun and returns to the Earth's neighbourhood periodically."
"(2014 UR116) does not represent a threat because its orbital path does not pass sufficiently close to the Earth's orbit," the NASA statement was reported by Howell as saying.
NASA further advised that before jumping into conclusion, any reports of the dangers posed by any asteroids, the 2014 UR116 including, and comets "should be verified by scientists and the media by accessing NASA's Near Earth Object (NEO) program web site."
According to RT.com, 2014 UR116 dwarfs over the more popular Apophis asteroid that could be in a collision course with Earth in the coming decade.
hij ging dus inderdaad misquote:Straks zoeft 'killer rock' van 270 meter langs de aarde maar we moeten niets vrezen
De 'killer-rock' zou inslaan op de aarde, ergens ter hoogte van Puerto Rico. De impact van die vervloekte asteroοde 2012 TT5 zou gigantisch zijn: zelfs het einde van de wereld is een optie. Dat was tenminste het doemscenario dat de 'believers' voorspelden. Maar NASA bevestigt opnieuw dat het zo'n vaart heus niet zal lopen, wanneer de asteroοde vandaag langs de aarde zoeft. Meer nog: op 4 oktober passeert er een nieuwe, de 2015 FS332, aan een hogere snelheid, dichter bij de aarde ιn minstens twee keer zo groot qua diameter (580 meter tot 1,3 km) dan die van vandaag.
De kans dat de enorme asteroοde van 270 meter straks botst met onze planeet aarde is belachelijk klein. Ook in de nabije toekomst worden er geen inslagen van asteroοden of kometen verwacht, bevestigt NASA nog eens, nu het moment nadert dat de asteroοde rakelings langs de aarde zal scheren. Nu ja, rakelings is relatief: er blijft volgens wetenschappelijke berekeningen minstens een afstand van 8,33 miljoen kilometer en de verwachte afstand bedraagt zo'n 9,35 miljoen kilometer. Ook de eigenlijk veel indrukwekkendere asteroοde 2015 FS332 zal de aarde dus niet raken op 4 oktober.
Doemdenkers weten dezer dagen niet waar ze moeten kruipen, of net wιl. Want eind september 2015 is een topkanshebber om het einde van de wereld in te luiden. Zo passeren er de komende dagen nog wel meer asteroοdes op nabije afstand van de aarde en op 28 september is er dan de fameuze bloedmaan. Aanhangers van het geloof in de apocalyps zien onder meer aanwijzingen in de Bijbel dat het einde der tijden in de huidige periode zal plaatsvinden.
quote:Hoe dicht komt 2013 TX68 langs de aarde?
Op 5 maart is het weer zover: een planetoοde scheert dan ‘rakelings’ langs de aarde. Op zich niets bijzonders, ware het niet dat het gissen is naar de dichtste benadering van dit stuk ruimtepuin.
Om maar met het geruststellende nieuws te beginnen: ruimtevaartorganisatie NASA stelt dat er op 5 maart in wezen geen kans is op een impact. Toch zou het zomaar kunnen dat planetoοde 2013 TX68, zoals het stuk ruimtepuin heet, de aarde op zeer korte afstand passeert. De naderende planetoοde verbergt zich voortdurend in de schittering van de zon, en is daardoor nauwelijks te observeren. Mogelijk vliegt hij voorbij op een afstand van veertien miljoen kilometer, maar liefst 35 keer de afstand van de aarde tot de maan. Maar de kans bestaat ook dat hij ons nadert tot slechts zeventienduizend kilometer, maar half zo hoog als de baan van veel geostationaire satellieten!
Gebrek aan data
De reden achter deze wijde variatie in schatting is een gebrek aan data. Planetoοde 2013 TX68 werd ontdekt, maar tevens ook voor het laatst gezien in 2013 door the Catalina Sky Survey, een Amerikaans-Australisch project om zogenoemde near-Earth objects te vinden. Wetenschappers konden het object slechts drie dagen observeren, alvorens hij zoek raakte in de schittering van de zon. Sindsdien lopen de voorspellingen ‘enigszins uiteen.’
Volgens wetenschappers Patrick Taylor, verbonden aan Arecibo Observatory in Puerto Rico, is het onwaarschijnlijk dat astronomen de dichtste benadering van 2013 TX68 vσσr de flyby zullen kunnen bepalen. De planetoοde nadert vanuit de richting van de zon, en zal lang verborgen blijven in haar schittering. “Op de dag van de passage zal hij, zodra hij van de zon af beweegt, hopelijk weer zichtbaar zijn voor waarnemers”, zegt Taylor. “Die waarnemingen zullen ons meer vertellen over hoe dicht het brokstuk de aarde passeert.”
Groter dan Tsjeljabinsk
Voorlopig is het dus ook gissen naar de precieze baan, de omvang, en het materiaal van de planetoοde. Hypotheses over 2013 TX68 zijn er wel: de meest ‘betrouwbare’ schattingen spreken van een doorsnee van ongeveer dertig meter. Dat maakt hem vijftig procent groter dan de meteoriet die drie jaar geleden explodeerde in het Russische Tsjeljabinsk. Ruim duizend mensen raakten hierbij gewond, en de vrijgekomen hoeveelheid energie werd geschat op maar liefst vijfhonderd kiloton. Bij een inslag van 2013 TX68 zou ongeveer twee keer zoveel energie vrijkomen. Taylor: “Er zijn misschien wel een miljoen near-Earth objects met een doorsnee van enkele tientallen meters. We hebben echter in totaliteit (alle formaten) pas tienduizend brokstukken ontdekt.”
De kans op een impact op 5 maart is dus nihil, en ook op 28 september 2017, de datum waarop de planetoοde opnieuw langs de aarde trekt, is deze kans te verwaarlozen. De odds: 1 op 250 miljoen. De kansen zijn nog lager in de daaropvolgende flyby’s in 2046 en 2097. “Veel te klein om je zorgen over te maken”, zegt Paul Chodas van NASA's Center for NEO Studies. “Toekomstige observaties moeten meer duidelijkheid verschaffen.”
quote:A very bright meteor exploded above the Republic of Khakassia, Siberia, Russia at 11:35 UTC (18:35 local time) on Tuesday, December 6, 2016, briefly turning night into day. The event was seen for about three to four seconds and was followed by a sonic boom.
Witnesses from Khakassia, as well as from the neighboring Krasnoyarsk Region in southern Siberia reported the event.
"We saw a flash, and in about two minutes our houses vibrated and we heard thunder, and car alarms went off," said one witnesses for The Siberian Times.
Another witness said: "I went for a walk with my friends. We stopped by the shop and my friend screamed when she saw a bright flash, and then there was an explosion. All the car alarms immediately went off. We were so scared. My father said windows were vibrating. We think it was a meteor."
Emergency Ministry said it was a meteor that completely burned out in the atmosphere, somewhere above Sayanogorsk town. The ministry initially reported there was no damage on the ground, but the quote from the ministry was later deleted. It was unclear why, The Siberian Times said.
It is possible that pieces of the meteor survived and crashed somewhere in the region.
quote:A large meteor exploded over the Norwegian Sea at 04:15 UTC on December 6, 2016. The event lit up the sky over Norway and was followed by several sonic booms.
The fireball started at 81.4 km (50.6 miles) and ended at 24.4 km (15.2 miles), according to the latest analysis by the Norwegian Meteor Network.
It had an estimated entry velocity of 13.6 km/s and mass of at least 1 000 kg (2 200 lbs).
Het lijkt er langzaam te gaan, is dit niet ruimteafval?quote:Op woensdag 28 december 2016 13:49 schreef Frutsel het volgende:
gezien vanuit Guatemala & Nicaragua
quote:Newly discovered asteroid will have flyby Earth
A newly discovered Apollo-class asteroid 2017 BX will flyby Earth at 0.68 LD (261 120 km / 162 252 miles) from the surface of our planet on January 25, 2017. Its estimated size is between 4 and 14 m (13 and 46 feet).
At the time of its closest approach to Earth - 04:45 UTC on January 25 - asteroid 2017 BX will flyby at 0.68 LD (261 120 km / 162 252 miles) from the surface of Earth with an estimated velocity of 7.44 km/s.
2017 BX was first observed at Pan-STARRS 1, Haleakala on January 20, 2017.
The next time this object comes close to our planet will be on January 12, 2070. Its nominal distance at the time of closest approach will be 37.9 LD (14553603 km / 9043190 miles).
As of January 17, 2017, there are 15 564 known near-Earth objects. On January 1, 2000, this number was only 935. Ten years before that, on January 1, 1990, we knew only for 180 near-Earth objects.
The following chart shows the current total number of known near-Earth asteroids (as of January 21, 2017) grouped according to their estimated sizes. The first size bin represents NEAs smaller than ~30 m (98 feet) in diameter. The last bin represents NEAs with diameters larger than ~1km (0.62 miles).
quote:A bright meteor streaked through the sky over the eastern United States around 09:08 UTC (04:08 local time) on January 25, 2017. The event lasted a couple of seconds and was caught on security camera in Huntsville, North Carolina.
By 17:27 UTC, the American Meteor Society received 12 reports about the fireball. It was seen from Kentucky, Tennessee, South Carolina, North Carolina, Virginia and Maryland. There was no sound associated with the event.
Several people from Mount Holly, NC reported a loud noise between 04:10 and 04:15 local time. One woman said it sounded like a large truck dropping a dumpster.
Jim Craig, planetarium director at The Schiele Museum in Gastonia, said the "sonic boom” heard all across Mount Holly came from a meteor breaking up in the atmosphere
quote:ASTEROID WARNING: Empire State Building-sized space rock may hit Earth, says NASA
The asteroid, known as 2015 BN509, after the date of its discovery, is on a NASA list of potentially hazardous asteroids that could one day threaten the planet.
It flew past Earth in January at nearly 44,000mph.
Luckily this time it was 3.3 million miles away, but asteroids on the list are there because of the chance of a direct strike in coming years, and uncertainty over there orbits.
The 2015 BN509 asteroid is at least 200 metres wide and 400 metres long.
At that size, a direct hit could destroy a whole country or region.
It was filmed hurtling through empty space by the Arecibo Observatory, which is a giant radio telescope , as it came past last month.
NASA is currently trying to chart all asteroids that pose a risk to Earth, but still has no idea where around 80 percent of those of a similar size to 2015 BN509 are.
It is also trying to devise ways to deflect an asteroid, should one be heading for us.
Currently there is no tested way opt dealing with one, but ideas include using the gravity of a spacecraft to knock it off course.
However, NASA does have an asteroid early warning system called Scout.
It can work out the flight path of an incoming asteroid within 10 minutes of first identifying it.
Paul Chodas from NASA's Jet Propulsion Laboratory, which runs the Scout programme, said: "When a telescope first finds a moving object, all you know is it's just a dot, moving on the sky.
"You have no information about how far away it is.
"The more telescopes you get pointed at an object, the more data you get, and the more sure you are how big it is and which way it's headed. But sometimes you don't have a lot of time to make those observations."
Over 2 dagen of over 12 dagen volgens dat artikel, vanaf nu.quote:Op donderdag 26 januari 2017 20:55 schreef Frutsel het volgende:
Oh oh.. volgende maand is ut raak....
quote:Newly discovered asteroid does close flyby
A newly discovered asteroid named 2017 DG16 will flyby Earth at a very close distance of 0.34 LD (130 560 km / 81 126 miles) from the surface of our planet at 21:08 UTC on February 23, 2017. This is the fifth known near-Earth asteroid to flyby Earth within 1 lunar distance since January 8, 2017.
2017 DG16 was first observed by Mt. Lemmon Survey on February 21. The estimated size of this asteroid is between 2 and 8 m (6.5 - 26.2 feet). It will flyby Earth at a speed (relative to the Earth) of 6.91 km/s.
This object belongs to the Apollo group of asteroids, Earth-crossing asteroids that have an orbital semi-major axis greater than that of the Earth (> 1 AU) but perihelion distances less than the Earth's aphelion distance (q < 1.017 AU).
This is the fifth known near-Earth asteroid to flyby Earth within 1 lunar distance since January 8, 2017, and the sixth since November 24, 2016. You can find them all in our Near-Earth Objects category.
As of February 19, 2017, there are 15 761 known near-Earth objects. 8 507 of them belong to the Apollo group of asteroids.
quote:Newly discovered asteroid makes very close flyby to earth: 0,03 LD
A newly discovered asteroid designated 2017 GM will flyby Earth at a very close distance of 0.03 LD (~11 520 km / 7 158 miles) from the surface of our planet on April 4, 2017. This is the 15th known asteroid to flyby Earth within 1 lunar distance since the start of the year and the closest one.
2017 GM belongs to the Apollo group of asteroids. Its estimated size is between 2.8 - 6.3 m (9 - 20 feet).
This small asteroid, first observed at Mt. Lemmon Survey on April 3, will make its closest approach to the Earth at 10:31 UTC on April 4 at a speed (relative to the Earth) of 18.48 km/s.
This is the 15th known asteroid to pass within 1 lunar distance since January 9, 2017 and the closest one. You can find them all in our Near-Earth Objects category.
As of March 31, 2017, there are 16 062 known near-Earth objects, 15 956 of them are near-Earth asteroids. 8 696 belong to the Apollo group of asteroids.
Since the start of the year, we have discovered 355 new near-Earth objects. All of them are asteroids.
quote:Earth Faces an Increased Risk of Being Hit by an Asteroid, Astronomers Warn
Large asteroids may be lurking undiscovered within a meteoroid stream whose particles are hitting Earth, and scientists are urging a concentrated search for them.
Earth may be threatened by a newly discovered branch of a stream of meteoroids, increasing the risk that the planet will be struck by a meteoroid or asteroid.
A team of astronomers from the Czech Academy of Sciences announced the findings on Tuesday after studying the Taurid meteoroid stream. The stream produces a meteor shower that usually has a long period of activity in October and November and produces a low number of meteors. The meteors — light phenomena that are seen when a meteoroid enters the planet’s atmosphere and vaporizes, also referred to as “shooting stars” — occur when Earth’s orbit plows into the stream of debris left behind by Comet Encke.
Most of these particles are quite tiny and pose no threat whatsoever, but the Czech astronomers have tracked a new branch of the stream from which particles are intersecting with the planet. The branch includes two asteroids with diameters of between 200 and 300 meters (roughly 650-1000 feet). These asteroids are not themselves on a collision course with Earth, but their identification suggests that there may be other asteroids of this size or larger lurking undiscovered within this stream.
As such, the astronomers are urging a concentrated search for more Taurid asteroids, to see if any potentially threatening ones exist.
“Since asteroids of sizes of tens to hundreds meters pose a threat to the ground even if they are intrinsically weak, impact hazard increases significantly when the Earth encounters the Taurid new branch every few years,” they write in the journal Astronomy & Astrophysics. “Further studies leading to [a] better description of this real source of potentially hazardous objects, which can be large enough to cause significant regional or even continental damage on the Earth, are therefore extremely important.”
It’s worth noting, however, that no threatening objects have yet been discovered. Though the prospect of continental damage and regional catastrophe coming from space is alarming, more observations will be needed before drawing conclusions based on the Czech team’s research.
NASA is regularly working to anticipate the possible collision of a massive cosmic particle with Earth and assess any potential impact risks. It operates a collision monitoring system called Sentry that routinely scans for asteroids and determines the likelihood of impact over the next 100 years. It also freely catalogs these rocky bodies at the JPL Small-Body Database Browser.
The debris stream from Comet Encke is influenced in part by the gravity of Jupiter, a massive gas giant planet that is known to influence the orbits of comets and asteroids in that region of the solar system. As such, from time Jupiter’s gravity can redirect the debris so that more particles hit the Eart