spacetoday.net: space news from around the webin association with SpaceNews


First Earth Trojan asteroid discovered
Posted: Thu, Jul 28, 2011, 9:36 AM ET (1336 GMT)
Earth Trojan asteroid Illustration (NASA/JPL) Astronomers sifting through data from a NASA satellite have discovered the first "Trojan" asteroid sharing the same general orbit as the Earth. Astronomers found the asteroid, 2010 TK7, in observations by NASA's Wide-field Infrared Survey Explorer (WISE) spacecraft, and confirmed its orbit in later observations by the Canada-France-Hawaii Telescope on Mauna Kea, Hawaii. The asteroid, about 300 meters across, is in roughly the same orbit as the Earth, but ahead of it; it is about 80 million kilometers from Earth but has a complex trajectory that at times can bring it to within 24 million kilometers. This is the first so-called Trojan asteroid found associated with Earth, although Trojan asteroids have been found in the orbits of several other planets, most notably Jupiter, leading and trailing the planets by 60 degrees.
<<previous article   next article>>
news in brief
news links
Friday, March 24
Space Industry Players Set Sights On Moon
WMFE-FM Orlando — 5:21 am ET (0921 GMT)
'Alien' haunts outer space thriller 'Life'
Los Angeles Times — 5:14 am ET (0914 GMT)
Spaceport Camden bill gains final passage in General Assembly
Atlanta Business Chronicle — 5:12 am ET (0912 GMT)
McCarthy: Bill will benefit Mojave Air and Space Port
Ridgecrest (CA) Daily Independent — 5:12 am ET (0912 GMT)
'Life' Doesn't Quite Find A Way
NPR — 5:10 am ET (0910 GMT)


about spacetoday.net   ·   info@spacetoday.net   ·   mailing list