is a sub-kilometer B-type near-Earth asteroid that belongs to the Apollo group. It is also a potentially hazardous asteroid. The asteroid measures approximately 300 meters in diameter. It has a Minimum Orbit Intersection Distance (MOID) from the Earth of . Based on limited observations, the asteroid may have a rotation period of 2.5 hours.
It passed at a nominal distance of from the Moon and from Earth on 7 January 2002.
The asteroid was small enough to only be discovered after a close flyby later than year on the 26th of December 2002 by NASA's Near-Earth Asteroid Tracking program (NEAT).
The nearest proximity it has reached Earth by was 830,000 kilometres which is approximately twice the distance to the Moon. The findings of David Morrison of the NASA Ames Research Center claim that although a object the size of 2001 YB<small>5</small> in space commonly fly and orbit the Earth's proximity at such close distances annually, there are no indications of a collision on Earth as their predicted impact spans from about once every 20,000 to 30,000 years.