Asteroid Toutatis which was discovered on January 4, 1989 by Christian Poll must once again get close to the Earth on December 12. The small asteroid, consisting of two parts of 4.6 km and 2.4 km can not harm our planet. Asteroid Toutatis 4179 was named after the Celtic god. This asteroid has an irregular form, and belongs to the category of Apollo. Asteroid Toutatis has diameter 5.4 kilometers, and the rotation period is 176 hours. At the closest distance the asteroid approached the Earth in 2004. This year, the asteroid must pass by our planet at a distance of 6.9 million kilometers from Earth.
Apophis previously known as 2004 MN4, a member of the Aten group of near-Earth asteroids which had been estimated by NASA as having a 1 in 5500 chance of striking the Earth in 2029. Concealing the energy of 65,000 atomic bombs asteroid Apophis with a mass of 50 million tonnes and a diameter of 320 meters will cross the orbit of the moon and rush to the Earth with a speed of 45 thousand miles per hour. In a collision of Apophis might do unseen troubles.
Two small asteroids zipped close by Earth in back-to-back flybys of the planet on May 28 and on May 29. As said NASA scientists while both space rocks came well within the moon’s orbit, they posed no danger to our plane. The newfound asteroid 2012 KP24, which measures approximately 69 feet (21 meters) across, zoomed by Earth on May 28, coming within 32,000 miles (51,000 kilometers) on its closest approach, according to astronomers at NASA’s Asteroid Watch at the agency’s Jet Propulsion Laboratory in Pasadena, Calif.
Scientists on NASA’s asteroid sample return mission, Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx), have measured the orbit of their destination asteroid, 1999 RQ36, with such accuracy they were able to directly measure the drift resulting from a subtle but important force called the Yarkovsky effect the slight push created when the asteroid absorbs sunlight and re-emits that energy as heat.
Observations from NASA’s Wide-field Infrared Survey Explorer (WISE) have led to the best assessment yet of our solar system’s population of potentially hazardous asteroids. The results reveal new information about their total numbers, origins and the possible dangers they may pose. Potentially hazardous asteroids, or PHAs, are a subset of the larger group of near-Earth asteroids. The PHAs have the closest orbits to Earth’s, coming within five million miles (about eight million kilometers), and they are big enough to survive passing through Earth’s atmosphere and cause damage on a regional, or greater, scale.
An asteroid with the size of a school bus gave Earth a close shave on May 13, passing well inside the orbit of the moon. According to NASA’s Near-Earth Object Program at the Jet Propulsion Laboratory in Pasadena, Calif the near-Earth asteroid 2012 JU, which is thought to be about 40 feet (12 meters) wide, came within 119,000 miles (191,500 kilometers) or so of our planet before zooming off into deep space.
New observations from a NASA Dawn spacecraft show that the huge asteroid Vesta is a battered protoplanet left over from the solar system’s early days, with a unique mix of characteristics unknown from any other space rock. Scientists had thought that Vesta, the second-largest body in the main asteroid belt between Mars and Jupiter, probably started down a planet-forming path shortly after the solar system’s birth. Many other Vesta-like objects were incorporated into rocky worlds such as Earth, but Vesta’s development along this path was halted.
NASA’s Dawn spacecraft reveal new details about the giant asteroid Vesta, including its varied surface composition, sharp temperature changes and clues to its internal structure. Images from Dawn’s framing camera and visible and infrared mapping spectrometer, taken 420 miles (680 kilometers) and 130 miles (210 kilometers) above the surface of the asteroid, show a variety of surface mineral and rock patterns.
An asteroid with the size of a passenger jet zoomed near the Earth Sunday, on April 1,2012. The asteroid, which called 2012 EG5, was closer than the moon when it flew by Earth at 5:32 a.m. EDT (0932 GMT). According to Nasa the space rock is about 150 feet wide (46 meters). The asteroid 2012 EG5 crept within 143,000 miles (230,000 kilometers) of Earth during its closest approach, which is just over half the distance between Earth and the moon’s orbit.