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Dimorphos is approximately 170 meters (560 ft) in diameter, compared to Didymos at 780 meters (2,560 ft). Dimorphos does not have a confirmed mass, but it is estimated to be about 5 × 10 9 kg (5.5 million tons), or about the same mass and size as the Great Pyramid of Giza , when assuming a density of 2.17 g/cm 3 similar to Didymos. [ 55 ]
65803 Didymos (provisional designation 1996 GT) is a sub-kilometer asteroid and binary system that is classified as a potentially hazardous asteroid and near-Earth object of the Apollo group. [ a ] The asteroid was discovered in 1996 by the Spacewatch survey at Kitt Peak , and its small 160-meter minor-planet moon , named Dimorphos , was ...
The location of 2024 YR4 qualifies it not just as any asteroid, but a near-Earth object (NEO). NEOs are defined as asteroids that hug the inner solar system, where we live, coming within 1.3 ...
The primary asteroid (Didymos A) is about 780 metres (2,560 ft) in diameter; the asteroid moon Dimorphos (Didymos B) is about 160 metres (520 ft) in diameter in an orbit about 1 kilometre (0.62 mi) from the primary. [15] The mass of the Didymos system is estimated at 528 billion kg, with Dimorphos comprising 4.8 billion kg of that total. [21]
That's about the size of a building, and one of the asteroids passing Earth Thursday exceeds that size threshold. The asteroid, named 2002 NV16 after the year it was discovered, measures about 177 ...
An asteroid nearly the size of a football field now has roughly a 0.28% chance of hitting Earth in about eight years, NASA says — though at one point earlier its estimate reached as high as 3.1% ...
This list includes few examples since there are about 589 asteroids in the asteroid belt with a measured radius between 20 and 49 km. [171] Many thousands of objects of this size range have yet to be discovered in the trans-Neptunian region.
The first space rock, asteroid 2011 UL21, passed by Earth on June 27 at a distance of 4.1 million miles (6.6 million kilometers), or 17 times the distance between Earth and the moon.