http://www.vnews.com.br/noticia.php?id=44666
Um asteroide passou de raspão pela Terra na manhã de segunda-feira (2). Segundo informações dos astrônomos, o rochedo, com diâmetro entre 21 e 47 metros, passou a cerca de 70 mil quilômetros da superfície terrestre o equivalente a um quinto da distância entre a Terra e a Lua. A informação foi divulgada pela Planetary Society, uma ONG internacional.
O objeto foi descoberto dois dias antes, por um astrônomo do Observatório Spring, na Austrália, quando estava a 1,5 milhão de quilômetros de distância. Designado 2009 DD45, ele passou sobre o oceano Pacífico e foi, em tese, visível da Austrália, do Japão e da China.
O astro, com seu porte, deve ser similar ao objeto que colidiu com a Terra em 1908, sobre Tunguska, na Sibéria. Naquela ocasião, o asteroide explodiu no ar, por conta do contato com a atmosfera, mas a onda de choque devastou as florestas da região.
http://www.anoticiadigital.com.br/home/news.asp?cod=50541
Planetary News: Near Earth Objects (2009)
Space Rock Swoops by Earth
March 2, 2009
A Near Earth Object designated 2009 DD45 buzzed the Earth early this morning (Pacific Time), passing within 70,000 kilometers (40,000 miles) of the Earth's surface. To give an idea of just how close a shave this was, consider this: 70,000 kilometers is just one fifth of the distance from the Earth to the moon, and only twice the distance at which geostationary telecommunications satellites orbit.
The space rock was discovered only two days ago by Rob McNaught at Siding Spring Observatory in Australia, when it was a dim speck about 1.5 million kilometers away. It became brightest when it passed closest to Earth at 13:44 Universal Time, which is 5:44am Pacific Time, and has been getting dimmer ever since. At the point of closest approach 2009 DD45 was over the Pacific Ocean near Tahiti, which means it could be observed from Australia, Japan, and China, but not from North America or Europe.
More On Near Earth Objects
According to NASA's NEO program 2009 DD45 is a sizable rock, between 21 and 47 meters in diameter. This is comparable to the size of the Tunguska impactor of 1908. Since the object is in a solar orbit that touches on Earth's orbit, astronomers predict that that 2009 will visit us again in future years.
Jean-Claude Pelle, recipient of a Planetary Society Shoemaker NEO grant for 2007, tracked the space rock fromhis observatory in Punaauia, Tahiti, and sent us this image:
O objeto foi descoberto dois dias antes, por um astrônomo do Observatório Spring, na Austrália, quando estava a 1,5 milhão de quilômetros de distância. Designado 2009 DD45, ele passou sobre o oceano Pacífico e foi, em tese, visível da Austrália, do Japão e da China.
O astro, com seu porte, deve ser similar ao objeto que colidiu com a Terra em 1908, sobre Tunguska, na Sibéria. Naquela ocasião, o asteroide explodiu no ar, por conta do contato com a atmosfera, mas a onda de choque devastou as florestas da região.
http://www.anoticiadigital.com.br/home/news.asp?cod=50541
Planetary News: Near Earth Objects (2009)
Space Rock Swoops by Earth
March 2, 2009
A Near Earth Object designated 2009 DD45 buzzed the Earth early this morning (Pacific Time), passing within 70,000 kilometers (40,000 miles) of the Earth's surface. To give an idea of just how close a shave this was, consider this: 70,000 kilometers is just one fifth of the distance from the Earth to the moon, and only twice the distance at which geostationary telecommunications satellites orbit.
The space rock was discovered only two days ago by Rob McNaught at Siding Spring Observatory in Australia, when it was a dim speck about 1.5 million kilometers away. It became brightest when it passed closest to Earth at 13:44 Universal Time, which is 5:44am Pacific Time, and has been getting dimmer ever since. At the point of closest approach 2009 DD45 was over the Pacific Ocean near Tahiti, which means it could be observed from Australia, Japan, and China, but not from North America or Europe.
More On Near Earth Objects
According to NASA's NEO program 2009 DD45 is a sizable rock, between 21 and 47 meters in diameter. This is comparable to the size of the Tunguska impactor of 1908. Since the object is in a solar orbit that touches on Earth's orbit, astronomers predict that that 2009 will visit us again in future years.
Jean-Claude Pelle, recipient of a Planetary Society Shoemaker NEO grant for 2007, tracked the space rock fromhis observatory in Punaauia, Tahiti, and sent us this image:
http://www.planetary.org/news/2009/0302_Space_Rock_Swoops_by_Earth.html
