Near-Earth Object Surveillance Satellite (NEOSSat)

This page provides access to the Near-Earth Object Surveillance Satellite (NEOSSat) data collection.

NEOSSat is a nimble Canadian space telescope supporting a dual mission of space situational awareness and space astronomy. It offers all-sky target acquisition, precise Fine Point control, a Track Rate mode for moving targets, and an extended baffle for low solar elongation observations. From a polar-orbiting platform, direct parallax measurement of near-Earth objects can be obtained. NEOSSat is well suited for the astrometric and photometric study of solar system bodies. NEOSSat also enables continual photometry for asteroseismology, exoplanet transits and other transients. The instrument is a 15-cm Maksutov telescope and CCD with 3”/pixel scale and 0.85° field of view.

To search for data products, use the Search for Data link at the left. More information about NEOSSat data, targets and publications are also available from the menu.


Papers based on NEOSSat observations should carry the following acknowledgement, preferably as a footnote to the title of the paper.

Based on data from the NEOSSat satellite, a joint mission of the Canadian Space Agency (CSA) and Defence Research and Development Canada (DRDC), with contributions from Microsat Systems Canada Inc. (MSCI), the University of Calgary, Bishop's University, and the National Research Council of Canada (NRC).
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