Given the question: Information: - 2104 Toronto ( 1963 PD ) is a main - belt asteroid discovered on August 15 , 1963 by Karl W. Kamper at the David Dunlap Observatory on plates taken at the Tautenburg Observatory by Sidney van den Bergh . It was the first minor planet to be discovered at an observatory in Canada and named after the University of Toronto which was celebrating its sesquicentennial at the time of its discovery and to note the important role that university had in developing Canadian astronomy . - The Karl Schwarzschild Observatory is a German astronomical observatory in Tautenburg near Jena, Thuringia. - Tautenburg is a municipality in the district Saale-Holzland, in Thuringia, Germany. It is home to the Karl Schwarzschild Observatory. - A minor planet is an astronomical object in direct orbit around the Sun that is neither a planet nor exclusively classified as a comet. Minor planets can be dwarf planets, asteroids, trojans, centaurs, Kuiper belt objects, and other trans-Neptunian objects. As of 2016, the orbits of 709,706 minor planets were archived at the Minor Planet Center, 469,275 of which had received permanent numbers ). - In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet about a star or a natural satellite around a planet. Normally, orbit refers to a regularly repeating path around a body, although it may occasionally be used for a non recurring trajectory or a path around a point in space. To a close approximation, planets and satellites follow elliptical orbits, with the central mass being orbited at a focal point of the ellipse, as described by Kepler's laws of planetary motion. - The Minor Planet Center (MPC) is the official worldwide organization in charge of collecting observational data for minor planets (such as asteroids) and comets, calculating their orbits and publishing this information via the "Minor Planet Circulars". Under the auspices of the International Astronomical Union, it operates at the Smithsonian Astrophysical Observatory, which is part of the Center for Astrophysics along with the Harvard College Observatory. Given the paragraphs above, decide what entity has the relation 'site of astronomical discovery' with 'karl schwarzschild observatory'.
The answer is:
2104 toronto