The Minor Planet Center, operating at the Smithsonian Astrophysical Observatory, "is responsible for the designation of minor bodies in the solar system: minor planets; comets; and natural satellites." They allow contributions from amateur astronomers, and provide public access to data collected. That data is used to inform international organizations of the potential impact of asteroids and other bodies.
There are two Pan-STARRS telescopes in operation at the Institute for Astronomy, and they both include digital cameras to take detailed photos of space objects, in order to track any Near Earth Objects which may pose a threat to the planet.
Caltech Astronomy Lectures
Lectures from the Department of Astronomy and Astrophysics at the California Institute of Technology, led by Dr. Cameron Hummels and staffed by volunteers in the Caltech astronomy community, recorded since 2016 and presented monthly.
This 1539 celestial map by Peter Apian (1495-1552) and Frisius Gemma (1508-1555), held in the New York Public Library's Rare Book Division, illustrates the cosmos as they were thought of in the 16th century.
This 1730 map of the stars was originally owned (and perhaps used?) by King George III (1738-1820), and is currently held by the British Library in the Topographical Collection of George III.
