The Near-Earth Object (NEO) Observations Program is a key element of NASA’s Planetary Defense Program, funding efforts to search for undiscovered NEOs using observatories around the world, calculate and refine NEO orbits, determine NEO physical properties and composition, and study NEO deflection and mitigation technologies. To achieve these objectives, the NEO Observations Program issues annual solicitations for proposals through NASA’s Yearly Opportunities for Research in Planetary Defense (YORPD) element of the Research Opportunities in Space and Earth Science (ROSES) solicitation. Major activities currently funded by the NEO Observations program include:
Initiatives to Discover New NEOs
![Catalina Sky Survey (CSS)](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-css3005.jpg?w=1024)
![Asteroid Terrestrial-Impact Last Alert System](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-atlas2-telescope.jpg?w=676)
Asteroid Terrestrial-Impact Last Alert System
University of Hawaii's Asteroid Terrestrial-Impact Last Alert System (ATLAS)
![PANStarrs](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-panstarrs1.jpg?w=1024)
Panoramic Survey Telescope and Rapid Response System
University of Hawaii's Panoramic Survey Telescope and Rapid Response System (Pan-STARRS)
![LINEAR telescope at MIT](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-linear.png?w=350)
Lincoln Near-Earth Asteroid Research
Massachusetts Institute of Technology's Lincoln Near-Earth Asteroid Research (LINEAR)
Efforts to Follow Up on NEO Discoveries and Determine NEO Physical Properties
![Infrared Telescope Picture](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-irtf-telescope.jpg?w=580)
![This artist concept shows the NASA WISE spacecraft, in its orbit around Earth. In September of 2013, engineers will attempt to bring the mission out of hibernation to hunt for more asteroids and comets in a project called NEOWISE.](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-pia17254-large.jpg?w=1024)
![Image of multiple asteroids](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-radar-images-of-asteroid-2006-hv5-pia25834-modest.jpg?w=1024)
![Astronomical Research Institute Telescope](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-astro-research-institute.jpg?w=324)
![Goldstone Radar](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-goldstone-radar.jpg?w=495)
![Lowell Observatory](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-manos-lowell.jpeg?w=773)
Mission Accessible Near-Earth Objects Survey
Lowell Observatory's Mission Accessible Near-Earth Objects Survey (MANOS)
![Magdalena Ridge Observatory](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-magdalena-ridge-observatory.png?w=1024)
![University of Arizona's Spacewatch](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-spacewatch.jpeg?w=1024)
![Antarctic Search for Meteorites](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-ansmet.jpg?w=1024)
Entities to Collect NEO Positional Measurements and to Predict and Calculate NEO Orbits
Research on Asteroid Impact Mitigation
![image of a globe and a meteor](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-asteroid-threat-assessment-project.png?w=1024)
Citizen Science
The International Astronomical Search Collaboration is a citizen science program that provides high-quality astronomical data to citizen scientists around the world.
Learn More about Citizen Science![Children from Nigeria in the Space Surfers Program](https://science.nasa.gov/wp-content/uploads/2023/09/pdco-niger-space-surfers.png?w=1710)