Asteroid 2024 Gj21. Just a couple of weeks later, on 6 june 2024, the catalina sky survey in arizona, usa, discovered a small asteroid 2—4 m in size that triggered an alert from. Asteroids are pieces of rock left over after the solar system formed 4.6 billion years ago, an asteroid approximately the size of two football fields is set to make a.

It is between 400 and 850 feet across and will pass within the orbit of the moon. The current right ascension is 18h 00m 54s and the declination is +05° 35’ 13” (apparent coordinates).