Overview

• Asteroid 2011 UL21, nearly a mile wide, was found to have a small moonlet orbiting it.
• The asteroid passed Earth at a distance of 4.1 million miles, posing no immediate threat.
• Asteroid 2024 MK, discovered just 13 days before its closest approach, came within 184,000 miles of Earth.
• NASA's radar images of 2024 MK show detailed surface features, including ridges and boulders.
• These observations provide valuable data for planetary defense and understanding asteroid formation.