EU-ESA Workshop on Astrometric and Radar Observations of NEOs

Session

Orbit determination and impact monitoring

6 Oct 2025, 14:15

ESRIN-01121-Magellan (ESRIN)

63. Asteroid orbit determination and impact monitoring at ESA: the Aegis software

Francesco Gioanotto (ESA NEOCC), Laura Faggioli (ESA NEOCC), Marco Fenucci (ESA NEOCC)

06/10/2025, 14:15

The Near-Earth Object Coordination Centre (NEOCC) of the European Space Agency is an operational hub that, among other tasks, determines the orbits of near-Earth objects (NEOs) and assesses their probabilities of impacting Earth. Since 2012, the NEOCC has shared NEO-related data via its dedicated web portal (https://neo.ssa.esa.int/). Over the course of its operational phase, significant...

69. Advancing orbit determination and impact monitoring with ADES and high-precision astrometry: an example on 2024 YR4

Francesco Gianotto (ESA NEOCC), Laura Faggioli (ESA NEOCC), Marco Fenucci (ESA NEOCC)

06/10/2025, 14:40

The Astrometry Data Exchange Standard (ADES) is a new data format for asteroid astrometry, providing many other feature than the previous 80-column format which was adopted by the Minor Planet Center (MPC). Among other information, observers are allowed to report the measured astrometric uncertainties and time uncertainties.

Reporting astrometry in ADES has many advantages, and the...

66. Identifying and Understanding Bad Tracklets: Inaccurate and Mis-Attributed Astrometry

Federica Spoto (Harvard–Smithsonian Center for Astrophysics, Minor Planet Center, 60 Garden Street, Cambridge, MA, USA), Jorge A. Perez-Hernandez (Harvard–Smithsonian Center for Astrophysics, Minor Planet Center, 60 Garden Street, Cambridge, MA, USA), Matthew Payne (Harvard–Smithsonian Center for Astrophysics, Minor Planet Center, 60 Garden Street, Cambridge, MA, USA), Peter Veres (Harvard–Smithsonian Center for Astrophysics, Minor Planet Center, 60 Garden Street, Cambridge, MA, USA)

06/10/2025, 15:05

The Minor Planet Center (MPC) is the world's only center for collecting and disseminating observations of minor planets, comets, and natural satellites. The MPC receives between 3 and 4 million observations per month, for a total of more than 30 million observations per year (before Rubin). Historically, the MPC applied an arbitrary limit of 2 arcseconds when accepting astrometry of attributed...