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Near-Earth AsteroidSSS....

Posted: Wed 16 Jan 2013, 20:58
by blackbox

Discovered by the LaSagra observatory in southern Spain, the small asteroid 2012 DA14 will pass within about 3.5 Earth radii of the Earth's surface on February 15, 2013.

Although its size is not well determined, this near-Earth asteroid is thought to be about 45 meters in diameter. Asteroid 2012 DA14 will pass inside the geosynchronous satellite ring, located about 35,800 km above the equator.

Its orbit about the sun can bring it no closer to the Earth's surface than 3.2 Earth radii on February 15, 2013. On this date, the asteroid will travel rapidly from the southern evening sky into the northern morning sky with its closest Earth approach occurring about 19:26 UTC when it will achieve a magnitude of less than seven, which is somewhat fainter than naked eye visibility.

About 4 minutes after its Earth close approach, there is a good chance it will pass into the Earth's shadow for about 18 minutes or so before reappearing from the eclipse. When traveling rapidly into the northern morning sky, 2012 DA14 will quickly fade in brightness.

Re: Near-Earth Asteroid 2012 DA14

Posted: Wed 16 Jan 2013, 21:04
by blackbox

Re: Near-Earth Asteroid 2012 DA14

Posted: Wed 16 Jan 2013, 21:06
by blackbox

Re: Near-Earth Asteroid 2012 DA14

Posted: Sun 03 Feb 2013, 21:39
by blackbox
2012 DA14 has not been in the catalogues for very long

-- it was discovered in February of 2012 by astronomers at the La Sagra Sky Survey program in southern Spain ' and reported to the Minor Planet Center, which designates minor bodies in our solar system.
At the time of the discovery, the asteroid had just made a fairly distant passage by Earth, about seven times farther than the distance to the moon.

Since 2012 DA14's orbital period around the sun has been about 368 days, which is very similar to Earth's, the asteroid made a series of annual close approaches.

This year's is the closest approach, and is the closest the asteroid will come for at least three decades.

But this encounter will shorten 2012 DA14's orbital period to about 317 days, changing its orbital class from Apollo to Aten, and its future close approaches will follow a different pattern.

This passage of 2012 DA14 by Earth is a record close approach for a known object of this size. A few other known asteroids have flown by Earth even closer, but those asteroids were smaller. On average, we expect an object of this size to get this close to Earth about once every 40 years. An actual Earth collision by an object of this size would be expected much less frequently, about once every 1,200 years, on average. ... Q68Ajh50Tl

Re: Near-Earth Asteroid 2012 DA14

Posted: Wed 06 Feb 2013, 10:32
by blackbox

NASA will hold a media teleconference at 11 a.m. PST (2 p.m. EST), on Thursday, Feb. 7, to discuss an asteroid, 150 feet (45 meters) in diameter, that will pass close, but safely, by Earth on Feb. 15. The flyby creates a unique opportunity for researchers to observe and learn more about asteroids.

The teleconference participants are: --Lindley Johnson, program executive, Near-Earth Object (NEO) Observations Program, NASA Headquarters, Washington --Timothy Spahr, director, Minor Planet Center, Harvard-Smithsonian Center for Astrophysics, Cambridge, Mass. --Donald Yeomans, manager, NEO Office, Jet Propulsion Laboratory, Pasadena, Calif. --Amy Mainzer, principal investigator, NEOWISE observatory, Jet Propulsion Laboratory --Edward Beshore, deputy principal investigator, Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer Asteroid Sample Return Mission, University of Arizona, Tucson

Audio of the teleconference will be streamed live at: ... v/nasajpl2 .

Related images will be available at the start of the teleconference at: ... 30207.html .

For detailed information concerning the Earth flyby of 2012 DA14, visit: ... flyby.html .

Re: Near-Earth Asteroid 2012 DA14

Posted: Fri 08 Feb 2013, 13:37
by abrakadaver
'Asteroïde bedreigt satellieten niet'

De asteroïde die volgende week op korte afstand langs de aarde vliegt, vormt geen bedreiging voor satellieten. Volgens NASA voert het pad van asteroïde 2012 DA14 tussen de lagere banen van navigatiesatellieten en de hogere banen van weer- en communicatiesatellieten door.

De asteroïde is zo'n 45 meter lang, zo groot als een vliegtuig. Op vrijdag 15 februari om 20.24 uur vliegt de rots op 27.680 kilometer afstand langs de aarde. Daarmee is het de grootste asteroïde die astronomen ooit zo dicht hebben zien naderen.

'Inslag onmogelijk'

Een inslag zou catastrofale gevolgen hebben, maar het is uitgesloten dat dat gebeurt, zeiden NASA-experts op een persconferentie. "De baan van deze asteroïde is zó goed bekend dat we met zekerheid kunnen zeggen dat hij niet dichterbij zal komen dan 27.520 kilometer. Een inslag is onmogelijk", aldus Don Yeomans, hoofd van NASA's asteroïdenteam.

Een asteroïde van vergelijkbare grootte komt volgens Yeomans maar eens in de veertig jaar dicht bij de aarde; een inslag van zo'n object komt maar eens in de 1200 jaar voor.

De laatste keer dat zoiets gebeurde was in 1908. Toen ontplofte een asteroïde in de atmosfeer, ruim vijf kilometer in de lucht boven Siberië. De Toengoeska-explosie verwoestte honderden vierkante kilometers land. ... -niet.html

Re: Near-Earth Asteroid 2012 DA14

Posted: Thu 14 Feb 2013, 23:19
by blackbox
Like trailers for the coming attraction, new images show asteroid 2012 DA14 on its way to a record-close approach to Earth on Feb. 15. One image, taken by amateur astronomer Dave Herald of Murrumbateman, Australia, on Feb. 13, shows the asteroid as a tiny white dot in the field of view. Another set of animated images, obtained by the Faulkes Telescope South in Siding Springs, Australia, on Feb. 14, and animated by the Remanzacco Observatory in Italy, shows the asteroid as a bright spot moving across the night sky

This animated set of three images depicts asteroid 2012 DA14 as it was seen on Feb. 14, 2013, at a distance of 465,000 miles (748,000 kilometers).


Re: Near-Earth Asteroid 2012 DA14

Posted: Thu 14 Feb 2013, 23:22
by blackbox
Asteroid 2012 DA14 – Earth Flyby Reality Check

These real-time simulations depict asteroid 2012 DA14 in its orbit around the sun and provide the asteroid's current distance from Earth. 2012 DA14 will have a close, but safe, pass by Earth on Feb. 15, 2013 at 2:25 p.m. EST (19:25 UTC). At that time, the asteroid will pass no closer than 17,000 miles above the surface of Earth over Indonesia. The simulations, created with NASA's Eyes on the Solar System, refresh every two minutes.


Image ... flyby.html

Re: Near-Earth Asteroid 2012 DA14

Posted: Thu 14 Feb 2013, 23:23
by blackbox
A Ustream feed of the flyby from a telescope at NASA's Marshall Space Flight Center in Huntsville, Ala., will be streamed for three hours starting at 9 p.m. EST (8 p.m. CST). To view the feed and ask researchers questions about the flyby via Twitter, visit:

Re: Near-Earth Asteroid 2012 DA14

Posted: Fri 15 Feb 2013, 10:15
by Het Dolle Eland
Hoppla BAM!!! Out of the Blue!!!!!

Gewonden door meteoroïde in Oeral
Ongeveer 100 mensen zijn in de Oeral gewond geraakt, nadat een meteoroïde in de lucht was ontploft en een schokgolf op de grond had veroorzaakt. Dat gebeurde in de buurt van de stad Chelyabinsk, deelde het Russische ministerie van Rampenbestrijding vrijdag op zijn website mee. In de lucht waren lichtstrepen te zien waarvan autobestuurders foto's op YouTube hebben gezet.


RT schrijft...:

A series of explosions in the skies of Russia’s Urals region, reportedly caused by a meteorite shower, has sparked panic in three major cities. Witnesses said that houses shuddered, windows were blown out and cellphones have stopped working.

According to unconfirmed reports, the meteorite was intercepted :lol: by an air defense unit at the Urzhumka settlement near Chelyabinsk. A missile salvo reportedly blew the meteorite to pieces at an altitude of 20 kilometers

PROEST... "intercepted" :pinch:

Hoe dan ook, veel schade, met name door de Sonic Boom en de restjes die neerkwamen...:

* Up to 150 people sought medical attention as a result of the incident;
* 20,000 rescue workers are operating in the region. Three aircraft were deployed to survey the area and locate other possible impact location;
* Police in the Chelyabinsk region are reportedly on high alert, and have begun ‘Operation Fortress’ in order to protect vital infrastructure;
* Office buildings in downtown Chelyabinsk are being evacuated. Injuries were reported at one of the city’s secondary schools, supposedly from smashed windows;
* The Mayak nuclear complex near the town of Ozersk was not affected by the incident, according to reports. Mayak, one of the world’s biggest nuclear facilities that used to house plutonium production reactors and a reprocessing plant, is located 72 kilometers northwest of Chelyabinsk.

*** It is believed that the incident may be connected to asteroid 2012 DA14, which measures 45 to 95 meters in diameter and will be passing by Earth tonight at around 19:25 GMT at the record close range of 27,000 kilometers.


Over de 2012 DA14 zegt NASA's JPL nu dus géén km maar lijkt toch meer op km;

2013-Feb-15 19:25 < 00:01 Earth:
* Nominal distance: 0.000227622477869032
* Minimal distance: 0.00022759588720678
* Maximum distance: 0.00022764906954094


Re: Near-Earth Asteroid 2012 DA14

Posted: Fri 15 Feb 2013, 10:29
by ninti
impact site

Re: Near-Earth Asteroid 2012 DA14

Posted: Fri 15 Feb 2013, 11:02
by Dromen
Maar het is niet de meteoriet van dit topic toch?! (om verwarring te voorkomen...)

edit: Ziet er idd naar uit dat het mogelijk dezelfde is.

Re: Near-Earth Asteroid 2012 DA14

Posted: Fri 15 Feb 2013, 11:36
by Het Dolle Eland
[quote=""Dromen" post=68503"]Maar het is niet de meteoriet van dit topic toch?! (om verwarring te voorkomen...)

edit: Ziet er idd naar uit dat het mogelijk dezelfde is.[/quote]

Nee het is niet de 2012 DA14. Die komt vanavond langsscheren op een afstadn van slechts 22.oookm.

Maar wellicht bestaat er een relatie tot dit ding, meevliegend of vooruitvliegend materiaal. Ja ik roep maar wat hoor.

Dit filmpje is wel bijzonder, je hoort namelijk de Sonic Boom pas na een kleine 12 sec. Dus moet dat ding op zon' 5km hoogte over zijn gekomen. De wolkenvorm - culumus achtig - laat dit ook een beetje zien.

Ik weet niet zeker of dus die klap de Sonic Boom is, of het juist de werkelijke inslag knal is (als er daadwerkelijk iets is neer gekomen - wat ik betwijfel overigens).

In dit-, en ook andere filmpjes hoor je ook heel veel "geknetter" kleine scherpe knallen, nog nadat het grote object voorbij is gekomen. Lijkt op pistoolschoten.

De inslag heeft waarschijnlijk niets te maken met de asteroïde die vrijdag langs de aarde scheert. De meteoriet die in Rusland insloeg kwam daarvoor uit de verkeerde richting, aldus astronomen. Het brokstuk 2012 DA14 van 50 meter doorsnede scheert vanavond langs de aarde op zo'n 27.000 kilometer afstand. Het is voor het eerst in de moderne geschiedenis dat een asteroïde zo dicht bij de aarde komt.

Re: Near-Earth Asteroid 2012 DA14

Posted: Fri 15 Feb 2013, 11:49
by NoMore
DA14 vanavond tussen 19u en 22u, hier te volgen;

Re: Near-Earth Asteroid 2012 DA14

Posted: Fri 15 Feb 2013, 23:10
by Het Dolle Eland
Ook berichten over een meteoriet in Cuba (Ninti zei het al eerder overdag):

BREAKING-Meteor Crash, This Time In CUBA
February 15th, 2013