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99942 Apophis (provisional designation 2004 MN 4) is a near-Earth asteroid and a potentially hazardous object, 450 metres (1,480 ft) by 170 metres (560 ft) in size, [3] that caused a brief period of concern in December 2004 when initial observations indicated a probability of 2.7% that it would hit Earth on Friday, April 13, 2029.
10 Hygiea is a major asteroid located in the main asteroid belt.With a mean diameter of between 425 and 440 km and a mass estimated to be 3% of the total mass of the belt, [11] it is the fourth-largest asteroid in the Solar System by both volume and mass, and is the largest of the C-type asteroids (dark asteroids with a carbonaceous surface) in classifications that use G type for 1 Ceres.
[4] [9] The asteroid made its closest approach 1.47 AU from Earth on 7 March 2022. [10] The asteroid will not come this close to Earth again until March 2027. [11] By May 2022, when the asteroid was 1 AU from the Sun and near the ecliptic, Earth was on the other side of the Sun, 1.9 AU from the asteroid. [12] The asteroid is not risk listed.
For comparison, the average distance between the Earth and the moon is about 385,000km (239,000 miles). So far, about 25,000 large asteroids have been discovered as potential “city killers”.
Asteroids orbiting between Earth and the sun are especially hard to find, but NASA can't deflect hazardous space rocks if astronomers don't spot them.
The massive space rock could be "very bad for life as we know it" if it collided with Earth.
The fireball was observed by the cameras of the AllSky7 [9] and Fripon [10] networks. 2024 BX 1 is the eighth asteroid discovered before impacting Earth, and is Sárneczky's third discovery of an impacting asteroid. Before it impacted, 2024 BX 1 was a near-Earth asteroid on an Earth-crossing Apollo-type orbit. The bolide was studied in June ...
The 7,600-foot long celestial object has earned the nickname ‘planet killer,’ flying at speeds of 58,000 miles per hour How to watch ‘planet killer’ asteroid big enough to ‘end ...