Summary 2019 MO was the fourth object to be detected before impacting the Earth. The meteoroid was discovered by ATLAS in Mauna Loa on 22 June 2019 and impacted the atmosphere over the Caribbean...

Summary 2018 LA was the third object to be detected before impacting the Earth. The meteoroid was discovered at 08:22 UTC on 2 June 2018 by the Mount Lemmon Survey and impacted the atmosphere over...

Summary 2014 AA was the second object to be detected before impacting the Earth. The meteoroid was discovered on 1 January 2014 by the Mount Lemmon Survey and impacted the atmosphere over the...

Summary 2008 TC3 was the first object detected in space prior to impacting the Earth. Discovery occurred at 06:39 UTC on 7 October 2008 by the Catalina Sky Survey and the meteoroid entered the...

Summary 2024 BX1 was the eighth object to be detected before impacting the Earth. The meteoroid was discovered at Piszkéstető Observatory (Hungary) on 20 January 2024 and impacted the atmosphere...

Summary 2024 UQ is the tenth imminent impactor observed in space before hitting the Earth. It was first observed by ATLAS, but reported after the impact had already happened. It was subsequently...

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...

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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...

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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 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...

Close Approach Fact Sheet for asteroid 2024 YR4 (version 1.0)

Planetary Defence involves a collaborative effort among various organizations, including the European Space Agency (ESA), NASA, the Jet Propulsion Laboratory (JPL), and the Center for Near Earth...

2024 YR4 has scored the highest Torino Scale in the last 20 years

ESA's Optical Ground Station (OGS) is a facility built by ESA to support tests of optical communication between Earth and orbiting satellites. The instrument is routinely used by ESA's Space Safety...

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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...

This table contains a list of NEAs with confirmed 100% Earth impact. The columns provide key parameters used in the assessment, including nominal impact time, absolute magnitude, and estimated size...