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

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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...

Warning: On 18th February, some maintenance activities will be performed on our portal. Some services may be temporarily unavailable.

Warning: the NEO Toolkit is undergoing maintenance activities. Some functionalities might not work as expected.

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...

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The topics available on this page are designed to help you navigate our site and understand its features. While we aim to cover the most common questions and issues, please note that some topics...

latest news

Introducing Aegis version 5, the new ESA operational software for asteroid orbit determination and impact monitoring.

Last update: 2025-03-31 10:00 UTC Richard Moissl Head of Planetary Defence Office Luca Conversi NEOCC Manager Juan Luis Cano Information Provision Coordinator Marco Micheli NEO Observer...

Former members of NEOCC Detlef Koschny SSA-NEO Office Co-manager (2010-2019) Acting Head of the PDO (2020-2022) Tobias Hoffmann Intern (2024) Selina Machnitzky Intern (2025)

The ESA NEO Coordination Centre has released the April newsletter.