Introducing the New CNEOS Website

Paul Chodas and Alan Chamberlin

February 13, 2017

The Jet Propulsion Laboratory’s Center for Near-Earth Object Studies (CNEOS) has created the CNEOS website at to replace the legacy Near-Earth Object Program website at The CNEOS website provides the same near-Earth object (NEO) data as on the legacy site, in a modern, interactive framework, and it incorporates new content as well. High-quality NEO orbital elements, summaries of close approaches, the Sentry impact risk table, NEO discovery statistics, and data on asteroids that might be accessible for exploration are all presented in interactive tables and plots.

An important new feature of the CNEOS site is the Scout page, which gives continually updated assessments of the range of possible trajectories of newly detected but unconfirmed objects. Other new features include a dynamically updated interactive global map on the fireballs page that displays the locations of the tabulated events, an asteroid size estimator page, and a user-friendly home page with an interactive menu bar, spotlight topic icons, a list of quick links, and metrics of interest shown in the sidebar.

CNEOS also now provides a convenient mechanism for user programs to download NEO data directly from JPL’s small-body database using a set of Application Programming Interfaces (APIs). The new APIs are documented online at .

CNEOS will maintain the legacy NEO Program website on until it is retired in late March 2017.

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