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 asteroļde 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 asteroļde 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 én minstens twee keer zo groot qua diameter (580 meter tot 1,3 km) dan die van vandaag.
De kans dat de enorme asteroļde van 270 meter straks botst met onze planeet aarde is belachelijk klein. Ook in de nabije toekomst worden er geen inslagen van asteroļden of kometen verwacht, bevestigt NASA nog eens, nu het moment nadert dat de asteroļde 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 asteroļde 2015 FS332 zal de aarde dus niet raken op 4 oktober.
Doemdenkers weten dezer dagen niet waar ze moeten kruipen, of net wél. 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 asteroļdes 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 planetoļde 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 planetoļde 2013 TX68, zoals het stuk ruimtepuin heet, de aarde op zeer korte afstand passeert. De naderende planetoļde 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. Planetoļde 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 vóór de flyby zullen kunnen bepalen. De planetoļde 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 planetoļde. 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 planetoļde 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
quote:Newly discovered asteroid flew past Earth at 0,31 LD
A newly discovered asteroid designated 2017 VL2 flew past Earth at 0.31 LD / 0.00079 AU (~118 182 km / 73 435 miles) on November 9, 2017, one day before it was discovered. This is the 47th known asteroid to flyby Earth within 1 lunar distance since the start of the year, and one of the largest.
2017 VL2 belongs to the Apollo group of asteroids. It was first observed at ATLAS-MLO, Mauna Loa at 11:24 UTC on November 10.
Its estimated diameter is between 16 and 32 m (52 - 105 feet) and it flew past Earth at a speed (relative to the Earth) of 8.73 km/s at 09:50 UTC ± < 00:01.
2017 VL2 is the 47th known asteroid to flyby Earth within 1 lunar distance since the start of the year, and one of the 7 largest.
This object won't come this close to Earth at least until 2125.
quote:Asteroļde vliegt begin februari “op relatief dichte afstand” van de Aarde
Een asteroļde zal volgens het Amerikaanse ruimtevaartbureau NASA begin februari op relatief dichte afstand voorbij de Aarde vliegen. Het hemellichaam met de naam 2002 AJ129 zal op 4 februari om 22.30 uur op ongeveer 4,2 miljoen kilometer voorbij onze planeet razen. Dat is ongeveerde het tienvoudige van de afstand tussen de Aarde en de Maan, aldus NASA.
Met een diameter van rond een kilometer is de in 2002 door een observatorium op Hawaļ ontdekte planetoļde van middelgroot kaliber. Hij zal de Aarde met een relatief hoge snelheid van ongeveer 34 kilometer per seconde (122.400 kilometer per uur) passeren.
Er is geen gevaar voor onze planeet. “We houden deze asteroļde al 14 jaar in het oog en we kunnen zijn baan erg nauwkeurig berekenen”, zei NASA-expert Paul Chodas. “Onze berekeningen voorspellen dat er geen enkel kans is dat 2002 AJ129 op 4 februari of op een ander tijdstip in de komende 100 jaar zal botsen met de Aarde”.
Das best een flinkequote:[url='Potentially hazardous': 450m-wide asteroid to fly by Earth tonight]https://au.news.yahoo.com/a/39427507/empire-state-building-sized-asteroid-2017-vr12-set-to-pass-earth/[/url]
An enormous asteroid the size of the Empire State Building is set to fly past Earth on Wednesday night.
The pass of a dangerously-sized asteroid to Earth was used to test early warning systems after a similarly-sized object caused widespread damage in Siberia in 2013.
Named 2017 VR12, the asteroid is expected to pass within 1,400,000km of Earth – three times the distance between our planet and the moon – and has a diameter of between 213 and 457 metres meaning it could be bigger than New York's Empire State Building.
NASA has labelled it a "potentially hazardous asteroid" due its close proximity to Earth. Asteroids are described as 'hazardous' by the space agency if they come within 7,400,200km of our planet. The Moon is 384,400km away, or one lunar distance.
The orbit of asteroid 2017 VR12 will come within a 3.8 lunar distance from Earth. Source: Facebook / Northolt Branch Observatories
The asteroid was previously estimated to be about 470 metres wide.
If the asteroid was as big as the first estimate, it could have a surface area of almost 55 acres. The newer estimate would give it a surface area of just over 15 acres.
According to NASA, 2017 VR12 was first discovered by the Pan-STARRS 1 telescope in Hawaii on November 10, 2017.
quote:NASA warns colossal HAZARDOUS asteroid BIGGER than Eiffel Tower heading to Earth TODAY
The newly-discovered space rock – dubbed Asteroid 2018 CB – is expected to zoom past our planet at around 10.30pm GMT.
It will be travelling at a speed close to five miles per second and will pass at a distance of about 39,000 miles.
That’s just one-fifth of the distance from Earth to the Moon and it’s a distance considered incredibly close in space terms.
According to NASA, the chunk of rock is a whopping 40m wide, which would be double the size of the meteor that almost wiped out Chelyabinsk in Russia almost five years ago.
The passing comes just one week after Asteroid 2018 DV1 soared past Earth at a distance of just 27,000 miles above the surface.
Just yesterday, Daily Star Online revealed how space boffins were drawing up plans to fire a nuclear weapon at an asteroid amid fears Earth could be hit by a giant space rock.
Asteroid 2018 CB has been classed by NASA as “potentially hazardous” because of the sheer proximity from Earth.
But thankfully, experts predict there is no threat of it hitting our planet.
"Asteroids of this size do not often approach this close to our planet — maybe only once or twice a year," Paul Chodas, manager of the Center for Near-Earth Object Studies at NASA's Jet Propulsion Laboratory in California, said in a statement from the agency.
He added: "Although 2018 CB is quite small, it might well be larger than the asteroid that entered the atmosphere over Chelyabinsk, Russia, almost exactly five years ago, in 2013.”
The asteroid was discovered by the NASA-funded Catalina Sky Survey (CSS) near Tucson, Arizona.
quote:Bright fireball over Europe, sonic boom reported, meteorites possible
A bright green fireball was observed and captured on camera as it streaked over Hungary and Croatia at 18:49 UTC (20:49 CET) on April 8, 2018. The event lasted about 5 seconds and was followed by sonic booms.
The International Meteor Organization (IMO), received 25 reports by 10:00 UTC, April 9 from people as far west as southern Germany.
According to reports, the event was associated with sonic booms suggesting the meteor penetrated deep into the atmosphere, Severe Weather Europe said.
Due to the brightness and long duration of the event, pieces of this object may have landed somewhere in far northern Croatia.
Vliegende schotel op de bovenste foto te zienquote:
Wel meer dan éénquote:
quote:Bright fireball over Chinese city of Jinghong
A very bright fireball exploded over the Chinese city of Jinghong in Yunnan Province at 13:40 UTC on June 1, 2018. Locals reported sonic booms associated with the event.
According to witness reports, the event lasted for about 2 seconds and was followed by two sonic booms. This indicates the object penetrated deep into the atmosphere and that some of its pieces might have survived the entry.
The director of the Xishuangbanna State Seismological Bureau, Ma Zhengyin, said the object entered at an angle of 70 degrees, common for meteors. However, both Zhengyin and Wang Xiaobin, a researcher at the Yunnan Observatory of Chinese Academy of Sciences, said they can't be sure it was a meteor because the video was short and there was no obvious path.
According to local media reports, people living in Dai Autonomous Prefecture of Xishuangbanna, Yunnan Province are looking for possible meteorites on the ground.
Door God gezonden richting Maduro natuurlijk. Zeker gemist alleen?quote:Op maandag 11 februari 2019 00:03 schreef Houtenbeen het volgende:twitter:
quote:Bright fireball over Belgium and Netherlands
A bright fireball streaked across the night sky over Belgium and Netherlands at around 20:12 UTC on February 15, 2019. The event lasted several seconds.
The International Meteor Organization (IMO) received 107 eyewitness reports. The object was mostly seen from the Netherlands, northeastern Belgium and western Germany but people from southeastern England and as far south as Paris and Beaune, France also witnessed the event.
Another fireball was seen over northeastern Germany at 22:00 UTC on February 17 and was reported by 62 people so far. There are no images or videos of this event at this time.
quote:'Enorme vuurbal' boven Gelderland blijkt meteoor
APELDOORN - Door het hele land was vrijdagavond een vallende ster te zien. Op sociale media werden meerdere meldingen van de vuurbal gedaan, onder meer vanuit Apeldoorn, Ede en Nunspeet.
Rond 21.10 uur werd het eerste filmpje geplaatst op Twitter waarop de vallende ster te zien is. Daarna stroomden de meldingen vanuit het hele land binnen. Sommigen spreken van een grote, groene vuurbal die door de lucht schoot, anderen juist van een blauwe flits.
Volgens MeteoGroup is het bijzonder dat de vallende ster zo duidelijk te zien was: 'Het was een kraakheldere nacht, dus daarom was de meteoor zo zichtbaar.'
Dat dit natuurverschijnsel door heel Nederland en zelfs in Belgiė en Engeland te zien was, komt doordat zo'n flits op grote hoogte door de lucht raast en ook nog eens ontzettend groot is.
quote:Grote vuurbal gezien boven Vlaanderen en Nederland
Tientallen mensen zagen gisteren een prachtig schouwspel boven delen van Nederland en Vlaanderen: een meteoor. De enorme vuurbal flitste iets na negen door de hemel. Een vallende ster is niet ongewoon, maar het levert wel spectaculaire beelden op.
De Nederlandse verslaggever Martin Drent van RTV Noord zag een “hele heldere, blauwe lichtkogel die naar beneden viel” en dacht eerst dat het vuurwerk was. Weerman Frank Deboosere kwam snel met een logische verklaring voor het verschijnsel: het is een gewone vallende ster of meteoor.
quote:Brilliant Green Fireball Lights Up Florida Sky
A bright green fireball east of Tallahassee, Florida sparked nearly 250 witness reports for the American Meteor Society across several states.
The large flash occurred on Saturday (March 30) at 11:52 p.m. local time, according to the society's event sighting page. It was visible in Florida, Georgia, Alabama and South Carolina, and possibly sighted as far north as Virginia.
Some witnesses reported the fireball being visible for 20 seconds, although the majority saw it as a briefer flash of just 3.5 seconds, according to the sightings page. "The glow from the burning meteor was so bright that it created shadows for several seconds before the light flickered out,
quote:Fireball Asteroid Hit Earth Last Weekend, Impact Equal To 5,000 Tons Of TNT
Last weekend, Earth was hit by an asteroid that produced an energy equivalent to 5,000 tons of TNT. Before exploding, astronomers were able to spot the asteroid using telescopes.
According to astronomer Peter Brown, the minor impact event happened on June 22 after a small asteroid exploded in the sky toward south of Puerto Rico. The explosion happened at around 5:30 pm EDT and produced an energy of around 5,000 tons of TNT.
Despite the high amount of energy released by the asteroid, no one was reportedly injured because of the event. This is primarily due to the object burning up and detonating shortly after entering Earth’s atmosphere. Reports indicated that the asteroid was only about 10 feet long.
Ernesto Guido, an astronomer from Italy, noted that the asteroid’s name is 2019 MO or NEOCP A10eoM1. He shared a satellite image captured by NASA and the National Oceanic and Atmospheric Administration of the asteroid as it entered the planet’s atmosphere.
The fact that asteroid 2019 MO was detected by astronomers and space agencies before hitting Earth came as a surprise as it was such a rare event. Although NASA noted that Earth gets frequently hit by small asteroids and meteors every year, spotting them before they enter the atmosphere is a bit uncommon.
In fact, 2019 MO’s recent visit marked only the fourth time an asteroid was detected before it hit Earth, according to CNET. The other instances occurred during the last 12 years. One of them was the small asteroid that exploded over Africa in 2018. This asteroid came so close to the surface that scientists were still able to find small fragments of it on the ground.
Although being able to detect asteroids before hitting Earth is becoming more common within the last couple of years, this does not automatically mean that impact events are becoming more frequent.
Instead, this simply means that the equipment agencies and amateur astronomers use are becoming more sophisticated and accurate when it comes to spotting incoming space rocks. NASA even has a specific department dedicated to monitoring asteroids as they approach Earth’s vicinity.
quote:Zet in je agenda: 14 september vliegt een joekel van een asteroļde langs
Op 14 september scheert Asteroid 2000 QW7 langs onze aarde. De asteroļde heeft een diameter van zeker 300 meter; dat zijn zo'n drie Groningse Martinitorens op elkaar. Qua hoogte is 2000 QW7 met 650 meter helemaal imponerend.
Het gigantische stuk ruimtesteen vliegt met ruim 23.000 kilometer per uur op 5,3 miljoen kilometer voorbij. Ter vergelijking: de maan staat op zo'n 380.000 kilometer en Mars gemiddeld op 225 miljoen kilometer.
Zekere voor het onzekere
Asteroid 2000 QW7 komt dus bést dichtbij. Zeer waarschijnlijk vormt het geen gevaar voor onze planeet, maar NASA neemt het zekere voor het onzekere en houdt de baan van de asteroļde nauwlettend in de gaten.
De asteroļde komt vaker langs: zo eens in de 19 jaar. Volgens The Weather Channel is de volgende passage op 19 oktober 2038.
Objecten als 2000 QW7 zijn zelden te zien vanaf de aarde. Asteroļde 99942 Apophis is van een vergelijkbare grootte en komt 13 april 13 2029 31.000 kilometer langs. Apophis is dan in gebieden zonder al te veel lichtvervuiling waarschijnlijk wel zichtbaar.
quote:Extremely close flyby (0,03 LD!!) of asteroid
A newly discovered asteroid designated 2019 UN13 flew past Earth at an extremely close distance of just 0.03 LD / 8.43e-5 AU (12 611 km / 7 836 miles) at 14:45 UTC on October 31, 2019.
The asteroid was discovered early October 31 at Catalina Sky Survey, Arizona, just several hours before its close approach.
The object belongs to the Aten group of asteroids and has an estimated diameter between 1 and 2.2 m (3 - 7.2 feet).
It flew past us over Africa at a speed of 12.85 km/s. Its trajectory was heavily influenced by Earth's gravity, sending its aphelion out to the asteroid belt between Jupiter and Mars.
Its flyby marks the third closest approach of any known asteroid on record, including 2010 RF12 expected to flyby us in September 2095, and the second closest since 2011 CQ11 on February 4, 2011.
This is the 61st known asteroid to flyby Earth within 1 lunar distance since the start of the year, including 2019 VA expected on November 2, and 11th in the month of October.