Summary 2024 RW1 was the ninth asteroid discovered to be on an impact trajectory with Earth while still in space. The object was found by the Catalina Sky Survey on the morning UT hours of 4...

Warning: on March 2nd at 09:00 UTC, some maintenance activities will be performed on our system. Some services, including the ephemeris and APIs, may be temporarily disrupted or unavailable.  

Warning: on March 6th at 09:00 UTC, some maintenance activities will be performed on our system. Some services, may be temporarily disrupted or unavailable.  

Warning: on April 13th at 09:00 UTC, some maintenance activities will be performed on our system. Some services may be temporarily unavailable.  

Warning: on May 16th at 09:00 UTC, some maintenance activities will be performed on our system. The portal may be temporarily unavailable.  

Warning. Due to some maintenance activities, some tools and services may not be available.

The May monthly update is still ongoing. Some objects, may be temporarily unavailable.

Warning: Due to maintenance activities, some features of the NEO Toolkit may not be available.

Warning: we are performing some maintenance activities on our system. Some services, including the ephemeris and APIs, may be unavailable.  

Warning: the Observation Planning Tool is currently under maintenance. It will be accessible as soon as possible.

The portal is under maintenance. Some of its features may not be available. Sorry for the inconvenience.

Attention. The NEOCC Priority List will soon be decommissioned. The data in the table, as well as the response from the corresponding REST API, are still valid for now, but will be turned off in...

Warning: on April 9th at 09:30 UTC, some maintenance activities will be performed on our portal. Some services may be temporarily unavailable.  

The portal is under maintenance, we apologize for the inconvenience.

Our search engine provides a comprehensive exploration of the entire asteroid database, offering a wide range of filtering options based on object group, risk class, orbital parameters,...

Orbit Properties This page contains information about orbital properties of the object, as computed by the Aegis Orbit Determination and Impact Monitoring system. Orbital elements at a refence...

The ESA NEO Coordination Centre has released the January newsletter.

Summary 2024 XA1 was the eleventh asteroid discovered on an impact trajectory, and the fourth one in 2024. It was found by the Catalina Sky Survey team observing from Kitt Peak, Arizona. It...

The NEOCC is ESA's centre for observing and computing asteroid orbits and assessing their impact risk.

Albedo The ratio of reflected sunlight to incident sunlight. Given an albedo and the distance of the asteroid from the Sun and the observer, the size of an object can be estimated from its...

For the first time in the history of NEA observations more than 2 000 new NEAs have been discovered in one calendar year, resulting in a monthly average of nearly 170 new asteroids. In addition, 2017 was the fifth year in a row with NEA discoveries above a thousand.

On 25 March 2015 our website experienced unusually high traffic for a few hours, seven times above our average rate. We tracked this boost of popularity to some news about the flyby of asteroid 2014 YB35 that were circulating on the web around that time.

April 2021 Newsletter

November 2022 Newsletter