157678

157678 is a large, potentially hazardous asteroid orbiting the Sun. Its diameter is approximately 1.3 kilometers, and it is classified as a Phoceid asteroid, which is a group of asteroids that are found in the outer asteroid belt.

The asteroid's orbit is moderately inclined relative to the plane of the solar system, with an inclination of around 21.4 degrees. Its semi-major axis is approximately 3.42 astronomical units. One astronomical unit is the average distance between the Earth and the Sun.

157678's discovery was not recorded until 2001, indicating that it was likely observed for many years prior to its official discovery. The asteroid was likely observed by astronomers, but not enough information was collected to determine its position at the time.

Due to its size and orbital characteristics, 157678 is considered a potentially hazardous asteroid by the United Nations Committee for the Peaceful Uses of Outer Space. Potentially hazardous asteroids are defined as those objects with a diameter of greater than 140 meters and an orbital path that brings them within 1.3 million kilometers of the Earth's surface.

Further study of 157678 is necessary to determine its composition, size, and orbital characteristics with greater precision. This information could be valuable in better predicting the asteroid's future path and preparation for any potential impacts.