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| Asteroid Orbital Elements Database | |
|---|---|
| Name | Asteroid Orbital Elements Database |
| Type | Astronomical database |
| Subject | Asteroids, minor planets, near-Earth objects |
| Maintained by | Various observatories and space agencies |
| Format | Tabular orbital elements, covariance matrices, ephemerides |
| Launched | 20th century (evolving) |
Asteroid Orbital Elements Database The Asteroid Orbital Elements Database is a curated compilation of measured and computed orbital parameters for minor planets and near-Earth objects used by observatories, mission planners, and researchers. It aggregates observations, orbit determinations, and uncertainty estimates drawn from international facilities and missions to support ephemeris generation, impact risk assessment, and dynamical studies.
The database synthesizes inputs from organizations such as International Astronomical Union, Minor Planet Center, Jet Propulsion Laboratory, European Space Agency, and observatories including Mauna Kea Observatories, Palomar Observatory, Arecibo Observatory, Goldstone Observatory, and Very Large Telescope. It interoperates with catalogs and services like Sloan Digital Sky Survey, Gaia, Pan-STARRS, Catalina Sky Survey, LINEAR, NEOWISE, Spacewatch, and ATLAS (survey), enabling cross-referencing of designations, discovery circumstances, and physical properties. Stakeholders include mission teams at NASA, researchers at Max Planck Institute for Solar System Research, analysts at Jet Propulsion Laboratory, and students at institutions such as Harvard University, California Institute of Technology, Massachusetts Institute of Technology, University of Cambridge, and Stanford University.
Typical entries record orbital elements (epoch, semi-major axis, eccentricity, inclination, longitude of ascending node, argument of perihelion, mean anomaly), absolute magnitude and slope parameter, epoch-referenced state vectors, and covariance information produced by pipelines used at Jet Propulsion Laboratory and Minor Planet Center. Associated metadata often include discovery date, discoverer institution (e.g., Palomar Observatory, Mount Lemmon Survey), provisional designations assigned under rules of the International Astronomical Union, observational arc length, number of observations from facilities like Haleakalā Observatory and Kitt Peak National Observatory, and non-gravitational parameters such as Yarkovsky acceleration estimates from teams at NASA Ames Research Center and Johns Hopkins University Applied Physics Laboratory. The database may store ephemerides spanning missions like Rosetta (spacecraft), Hayabusa2, OSIRIS-REx, and predicted close approaches catalogued alongside impact monitoring products from Sentry (monitor) and NEODyS.
Primary input streams include astrometric reductions from telescopes operated by Space Telescope Science Institute, European Southern Observatory, and national programs in Japan, China, India, and Russia. Orbit determination employs algorithms and software such as those developed at Jet Propulsion Laboratory, numerical integrators used by European Space Agency and academic groups at University of Pisa and University of Bern, and statistical filters implemented by teams at Cornell University and University of Arizona. Data ingest follows provenance practices endorsed by International Astronomical Union working groups, with linkage to discovery notices issued via Minor Planet Center circulars and telegrams. Perturbation models include planetary ephemerides like DE430 and INPOP and incorporate perturbations from major bodies cataloged by NASA JPL Horizons and the United States Naval Observatory.
Access is provided through web interfaces, APIs, and bulk downloads by services operated by Minor Planet Center, Jet Propulsion Laboratory, and portals maintained by European Space Agency and scientific consortia including International Virtual Observatory Alliance. Common formats include plain text MPC-format orbit files, JSON, CSV, and SPICE kernels used by NASA Navigation and Ancillary Information Facility. Query tools integrate with software such as Astropy, SPICE Toolkit, Find_Orb, and visualization platforms like Aladin (software) and TOPCAT, and are used by teams at Carnegie Institution for Science and Smithsonian Astrophysical Observatory.
Quality assessment uses residual statistics, normalized rms, and covariance matrices produced by orbit-determination suites employed at Jet Propulsion Laboratory and European Space Agency, with consistency checks against independent reductions from Gaia astrometry and radar delay/Doppler measurements from Goldstone Observatory and Arecibo Observatory. Uncertainty indicators include condition codes, formal uncertainties in orbital elements, and Monte Carlo ensembles generated by groups at University of Pisa and University of Bern to quantify ephemeris dispersion. Impact probability estimates and Palermo and Torino scale assessments reference methods developed within NASA and collaborative frameworks involving International Astronomical Union panels.
Users apply the database for mission design for projects like Hayabusa2, OSIRIS-REx, DART and for long-term dynamical studies by researchers at Southwest Research Institute, Max Planck Institute for Solar System Research, and University of Florida. It supports planetary defense modeling used by NASA Planetary Defense Coordination Office and European Space Agency's NEO Coordination Centre, target selection for spectroscopic follow-up at Gemini Observatory and Keck Observatory, and population studies linking to surveys such as Sloan Digital Sky Survey and NEOWISE. Applications extend to education and outreach by institutions like Smithsonian Institution and mission operations at Jet Propulsion Laboratory.
Maintenance is collaborative across national agencies and observatories including NASA, European Space Agency, Japan Aerospace Exploration Agency, and data centers such as Minor Planet Center and Jet Propulsion Laboratory. Update cycles range from near-real-time ingest of new astrometry at Minor Planet Center to periodic ephemeris reprocessing driven by new catalog releases like Gaia Data Release 2 and later versions managed by teams at European Space Agency. Versioning policies follow community norms established by International Astronomical Union working groups, with change logs and data provenance tracked for users at Max Planck Institute for Solar System Research and academic partners.
Category:Astronomical databases