Center for Near Earth Object Studies

Center for Near Earth Object Studies
Name	Center for Near Earth Object Studies
Established	1998
Location	Pasadena, California
Parent	Jet Propulsion Laboratory
Agency	National Aeronautics and Space Administration

Center for Near Earth Object Studies is a research group within Jet Propulsion Laboratory devoted to computing trajectories, impact probabilities, and ephemerides for small bodies that approach Earth. It provides analytical and computational services for planetary defense, mission planning, and scientific studies related to asteroids, comets, and artificial objects tracked by observatories such as Goldstone Observatory. The center supports decision-making by agencies including the Federal Emergency Management Agency, Department of Defense, and international bodies engaged in planetary protection.

History

The origin of the center traces to initiatives at Jet Propulsion Laboratory and programs like Spaceguard Survey during the late 20th century when cataloging near‑Earth populations became a priority after events such as the 1994 Shoemaker–Levy 9 impact into Jupiter and renewed interest following surveys by facilities like Palomar Observatory and LINEAR. Formalized work on precise orbit propagation expanded in coordination with projects at Minor Planet Center and mission teams for NEAR Shoemaker and later OSIRIS-REx. During the 21st century the center integrated tools from Deep Space Network operations and collaborated with programs such as NASA Planetary Defense Coordination Office to refine impact monitoring and public communication following notable episodes like the 2013 Chelyabinsk meteor.

Mission and Objectives

The center’s primary objectives align with policy priorities articulated by National Aeronautics and Space Administration and advisory entities including National Science Foundation panels and the United Nations Office for Outer Space Affairs guidance on planetary defense. Objectives include generating high-precision ephemerides for objects cataloged by Minor Planet Center, producing long-term dynamical integrations used by teams on DART and OSIRIS-REx for encounter planning, assessing impact probabilities used by Federal Emergency Management Agency contingency planning, and maintaining interoperability with systems at European Space Agency and observatories such as Arecibo Observatory (historically) and Mauna Kea Observatories.

Facilities and Organization

Embedded within Jet Propulsion Laboratory and co-located with facilities that operate the Deep Space Network, the center leverages supercomputing resources, orbital dynamics groups, and observational pipelines tied to missions at Kennedy Space Center and platforms such as NEOWISE. Organizational links exist with units at Caltech and research groups contributing to programs at Pacific Northwest National Laboratory and university consortia involved in surveys like Pan-STARRS and Catalina Sky Survey. Leadership often comprises scientists formerly affiliated with teams from Harvard–Smithsonian Center for Astrophysics, MIT, and University of Arizona planetary science departments.

Observations and Data Products

The center ingests astrometric and photometric measurements reported to the Minor Planet Center from telescopes including Pan-STARRS, Catalina Sky Survey, and LINEAR. It produces publicly disseminated ephemerides, close‑approach tables, and covariance data used by mission teams for navigation at facilities like Goldstone Observatory and by researchers at Smithsonian Astrophysical Observatory. Data products support trajectory design for missions such as NEAR Shoemaker, Hayabusa2, and OSIRIS-REx and feed into catalogs maintained by International Astronomical Union working groups.

Impact Risk Assessment and Modeling

Using dynamical integrators and statistical methods developed with collaborators at Harvard University and Caltech, the center computes impact probabilities, keyhole analyses, and Palermo and Torino Scale assessments referenced by NASA Planetary Defense Coordination Office and international partners including European Space Agency. Models account for gravitational perturbations from planets like Jupiter and non‑gravitational forces characterized in studies linked to teams at Massachusetts Institute of Technology and University of Colorado Boulder. The center’s outputs have informed risk communications tied to events examined by panels convened at National Academy of Sciences workshops.

Notable Discoveries and Events

The center played analytical roles during high‑profile encounters and campaigns including the follow-up and prediction efforts for the 2013 Chelyabinsk meteor, the pre‑impact characterization of meter‑scale impactors detected by surveys such as Catalina Sky Survey, and trajectory reconstruction for small bodies observed by missions like Hayabusa2 and DART. It contributed computations used in the public assessment of objects that generated media attention and policy response, coordinating with Minor Planet Center, NASA Planetary Defense Coordination Office, and international observatories during episodes that mobilized civil protection entities.

Collaborations and Outreach

The center collaborates with agencies and institutions including NASA Planetary Defense Coordination Office, European Space Agency, Minor Planet Center, United Nations Office for Outer Space Affairs, and academic partners at Caltech, Harvard–Smithsonian Center for Astrophysics, and University of Arizona. Outreach activities involve briefings for bodies such as Federal Emergency Management Agency and participation in exercises like international planetary defense workshops and tabletop simulations organized by National Aeronautics and Space Administration and United Nations. Educational engagement includes supporting citizen science projects linked to observatories such as Zooniverse and providing materials for university courses in orbital dynamics taught at institutions like Massachusetts Institute of Technology and University of Colorado Boulder.

Category:Jet Propulsion Laboratory Category:Planetary defense Category:Astrodynamics