(163348) 2002 NN4

(163348) 2002 NN4 is a near-Earth asteroid (NEA) and potentially hazardous asteroid (PHA). Discovered on July 4, 2002, by the Lincoln Laboratory Near-Earth Asteroid Research (LINEAR) project in Socorro, New Mexico, its designation indicates it was the 14th asteroid discovered in the second half of July 2002.

As a PHA, (163348) 2002 NN4 is monitored due to its size and proximity to Earth's orbit. Its absolute magnitude (H) suggests a size large enough that a potential impact could cause significant regional or global effects. PHAs are defined as having a minimum orbital intersection distance (MOID) of 0.05 AU or less and an absolute magnitude (H) of 22.0 or brighter.

The asteroid's orbit is characterized by its semi-major axis, eccentricity, inclination, and other orbital elements. These elements determine its path through the solar system and its potential for close approaches to Earth. Astronomers continue to track and refine its orbit to better predict its future trajectory and assess any potential impact risk, although current observations suggest no imminent threat. The continuous monitoring of NEAs like (163348) 2002 NN4 is a key aspect of planetary defense efforts.