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Five Things to Know About the 'Halloween Asteroid'
https://gma.yahoo.com/5-things-know-halloween-asteroid-002900478--abc-news-Halloween.html
This asteroid was only discovered days ago. Coming within 1.3 lunar distances -- or ~310,000 miles (49000 km) -- the asteroid, called 2015 TB145 (width ~ 400 m), will brush past Earth but presents no threat to humans. NASA said this asteroid is incredibly fast and predicts it will zoom past Earth at 78,000 miles per hour (125500 kmph).
http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2015 TB145;orb=1
The next close encounter of an object that size is expected to happen in in August 2027. That asteroid -- 1999 AN10 -- is estimated to be ~800 m and will brush by our planet at a distance of about 238,000 miles, according to NASA.
Back in January 2015, NASA cited the following:
Some background:
https://en.wikipedia.org/wiki/(137108)_1999_AN10 - one of many Apollo asteroids
https://en.wikipedia.org/wiki/List_of_Apollo_asteroids
As of 1 August 2015 NASA had listed a cumulative total of 1,605 discovered potentially hazardous asteroids (PHAs). Among these, there are 154 PHAs believed to be larger than one kilometer in diameter.
https://en.wikipedia.org/wiki/Potentially_hazardous_object
But not to worry, they've always been there.
https://gma.yahoo.com/5-things-know-halloween-asteroid-002900478--abc-news-Halloween.html
This asteroid was only discovered days ago. Coming within 1.3 lunar distances -- or ~310,000 miles (49000 km) -- the asteroid, called 2015 TB145 (width ~ 400 m), will brush past Earth but presents no threat to humans. NASA said this asteroid is incredibly fast and predicts it will zoom past Earth at 78,000 miles per hour (125500 kmph).
http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2015 TB145;orb=1
The next close encounter of an object that size is expected to happen in in August 2027. That asteroid -- 1999 AN10 -- is estimated to be ~800 m and will brush by our planet at a distance of about 238,000 miles, according to NASA.
Back in January 2015, NASA cited the following:
But now we have a closer encounter with 2015 TB145.An asteroid, designated 2004 BL86, will safely pass about three times the distance of Earth to the moon on January 26. From its reflected brightness, astronomers estimate that the asteroid is about a third of a mile (0.5 kilometers) in size. The flyby of 2004 BL86 will be the closest by any known space rock this large until asteroid 1999 AN10 flies past Earth in 2027.
At the time of its closest approach on January 26, the asteroid will be approximately 745,000 miles (1.2 million kilometers) from Earth.
Some background:
https://en.wikipedia.org/wiki/(137108)_1999_AN10 - one of many Apollo asteroids
https://en.wikipedia.org/wiki/List_of_Apollo_asteroids
As of 1 August 2015 NASA had listed a cumulative total of 1,605 discovered potentially hazardous asteroids (PHAs). Among these, there are 154 PHAs believed to be larger than one kilometer in diameter.
https://en.wikipedia.org/wiki/Potentially_hazardous_object
But not to worry, they've always been there.
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