SpaceTRC / Live Observatory
Asteroids approaching Earth
Every week dozens of small asteroids fly past Earth, some even closer than the Moon. Follow the close approaches of the next 60 days live with NASA/JPL data: distance, speed and estimated size.
Good to know
What is a close approach?
How close is “close”?
We list approaches within 20 lunar distances (about 7.7 million km). Close by astronomical standards, these distances are entirely safe.
How is size estimated?
Most small asteroids cannot be measured directly; their size is derived from brightness (absolute magnitude, H) and a range of possible surface reflectivities, so sizes are given as a range.
Is there any danger?
None of the listed objects has any chance of hitting Earth. Objects with a non-zero impact probability are tracked separately by NASA’s Sentry and ESA’s NEOCC.
Who finds them?
Most of these asteroids are discovered by sky surveys such as Catalina and Pan-STARRS, often only days or weeks before their closest approach.