1999UM

1999UM is the designation for a small, near-Earth asteroid discovered in 1999. It belongs to the Aten class of asteroids, characterized by orbits that are primarily inside Earth's orbit. Its discovery date was October 19, 1999, and it was identified by the LINEAR survey program.

The asteroid's orbit is relatively close to Earth's, and it has made several close approaches to our planet. While it is not currently considered a threat, its proximity means it is monitored by astronomers for any potential changes in its trajectory. Asteroids like 1999UM are of interest to scientists as they provide insights into the composition and evolution of the inner solar system.

Detailed observations of 1999UM have allowed for estimations of its size, which is relatively small, likely only a few hundred meters in diameter. Its composition is believed to be rocky. Studying these smaller Near-Earth Objects is crucial for understanding the population of potentially hazardous asteroids and for developing strategies to mitigate any future risks. Continued observation and orbital analysis are standard practice for such celestial bodies.