Heute nacht: kleiner Asteroid wird voraussichtlich in brilliantem Feuerball über Nordsudan enden

  • Don Yeomans
    NASA/JPL Near-Earth Object Program Office
    October 6, 2008


    A very small, few-meter sized asteroid, designated 2008 TC3, was found Monday morning by the Catalina Sky Survey from their observatory near Tucson Arizona. Preliminary orbital computations by the Minor Planet Center suggested an atmospheric entry of this object within a day of discovery. JPL confirmed that an atmospheric impact will very likely occur during early morning twilight over northern Sudan, north-eastern Africa, at 2:46 UT Tuesday morning. The fireball, which could be brilliant, will travel west to east (from azimuth = 281 degrees) at a relative atmospheric impact velocity of 12.8 km/s and arrive at a very low angle (19 degrees) to the local horizon. It is very unlikely that any sizable fragments will survive passage through the Earth's atmosphere.


    Objects of this size would be expected to enter the Earth's atmosphere every few months on average but this is the first time such an event has been predicted ahead of time.


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  • The following potentially confirming report comes from Jacob Kuiper, General Aviation meteorologist at the National Weather Service in the Netherlands: "Half an hour before the predicted impact of asteroid 2008 TC3, I informed an official of Air-France-KLM at Amsterdam airport about the possibility that crews of their airliners in the vicinity of impact would have a chance to see a fireball. And it was a success! I have received confirmation that a KLM airliner, roughly 750 nautical miles southwest of the predicted atmospheric impact position, has observed a short flash just before the expected impact time 0246 UTC. Because of the distance it was not a very large phenomenon, but still a confirmation that some bright meteor has been seen in the predicted direction.


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  • Chris : danke für den link!


    "Am frühen Dienstagmorgen trat der Asteroid 2008 TC3 über dem nördlichen Sudan in die Erdatmosphäre ein und explodierte. Das Ereignis, das von Astronomen vorherberechnet worden war, konnte auch der Wettersatellit Meteosat-8 verfolgen. Ein entsprechendes Bild wurde gestern von Eumetsat veröffentlicht. Auch aus einer Maschine der Fluglinie KLM wurde das Ereignis beobachtet."


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  • A spectacular fireball lit up the predawn sky above Northern Sudan on October 7, 2008. This explosion was caused by the atmospheric entry of a small near-Earth asteroid, estimated to be no more than a few meters in diameter. The explosion likely scattered small meteorite fragments across the Nubian desert below. Although such small impact events occur several times per year around the globe, this case was unprecedented because the asteroid was actually discovered the day before it reached the Earth and the impact location and time were for the first time predicted in advance.


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  • A month after asteroid 2008 TC3 hit the Earth's atmosphere, the first ground-based image of the event has surfaced on the Internet. Admittedly, it's not the fireball everyone has been waiting to see, but it is visual evidence that something hit us above Sudan on October 7th.


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    Siehe auch hier

  • Almahata Sitta - "Station 6" in arabischer Sprache, eine kleine sudanesische Bahnstation in der Nubischen Wüste - und die Ortschaft Wadi Halfa im Norden Sudans sind seit dem vergangenen Oktober zumindest unter den Meteoritenforschern ein Begriff. Von dort aus wurde nämlich der Feuerball beobachtet, der das Ende des erst am Tag vorher entdeckten Kleinplaneten 2008 TC3 signalisierte. Bei der Sichtung von gerade eben aufgenommenen Bildern des "Catalina Sky Survey" hatte ein Forscher am Observatorium auf dem Mount Lemmon in Arizona dieses winzige Objekt bemerkt, das - wie eine rasche Analyse ergab - direkt auf die Erde zuraste. Als Ziel stellte sich nach weiteren, hastig in aller Welt organisierten Beobachtungen eine Region in Sudan heraus.


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  • Anlässlich einer signierten Fotografie von Richard Kowalski, die mich heute erreichte:



    "Richard Kowalski, founder and administrator of the Minor Planet Mailing List, holds a piece of Almahatta Sitta, the meteorite that is all that remains of asteroid 2008 TC3. 2008 TC3 was discovered by Kowalski using the 1.5-meter telescope (background) of the Catalina Sky Survey, located on the peak of Mt. Lemmon, near Tucson, Arizona. Credit: © Richard Kowalski, Full Moon Photography.net"


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    Freundliche Grüße: Uwe (A74)

  • Wednesday, December 15, 2010


    Washington, D.C.—Scientists from all over the world are taking a second, more expansive, look at the car-sized asteroid that exploded over Sudan's Nubian Desert in 2008. Initial research was focused on classifying the meteorite fragments that were collected two to five months after they were strewn across the desert and tracked by NASA's Near Earth Object astronomical network. Now in a series of 20 papers for a special double issue of the journal Meteoritics and Planetary Science, published on December 15, researchers have expanded their work to demonstrate the diversity of these fragments, with major implications for the meteorite's origin.


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