Live NASA Data
What's passing Earth
this week?
Close approaches are moments when an asteroid passes near Earth. NASA tracks thousands of these near-Earth objects — none are expected to hit us, but they're fascinating to follow.
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| Name | Date | Est. Diameter | Miss Distance (km) | Miss Distance (LD) | Velocity | Hazard |
|---|---|---|---|---|---|---|
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Common questions
What is a close approach?
A close approach is when an asteroid passes near Earth. "Close" in astronomical terms can still mean hundreds of thousands of kilometres — no currently tracked asteroids are on a collision course with Earth. NASA monitors thousands of these near-Earth objects (NEOs) to assess any long-term risk.
What is a lunar distance (LD)?
A lunar distance is the average distance from Earth to the Moon — approximately 384,400 km. Astronomers use it as a convenient unit for measuring how close near-Earth objects pass. An asteroid at 1 LD is as far away as the Moon; at 0.5 LD it is half that distance.
What makes an asteroid "potentially hazardous"?
NASA classifies an asteroid as potentially hazardous (PHA) if it is estimated to be larger than roughly 140 metres in diameter and its orbit brings it within 0.05 AU (about 7.5 million km, or 19.5 lunar distances) of Earth's orbit. Being classified as potentially hazardous does not mean an impact is imminent — it simply means the object warrants closer monitoring.
Where does this data come from?
All data is sourced from NASA's Near Earth Object Web Service (NeoWs) API, maintained by NASA's Center for Near Earth Object Studies (CNEOS) at the Jet Propulsion Laboratory. The API is publicly available and updated continuously as new telescope observations come in.
How often is the data on this site updated?
This tracker fetches fresh data from NASA every 30 minutes. If you need more up-to-date information, you can visit NASA's CNEOS website directly.
Could any of these asteroids hit Earth?
NASA's planetary defence team tracks all known near-Earth objects. None of the asteroids currently listed are on an impact trajectory. The probability of a significant impact in the next 100 years from any known object is extremely low.