Q:Information:  - Miguel Itzigsohn (died 1978) was an Argentine astronomer and observer of comets, credited by the Minor Planet Center with the discovery of 15 asteroids between 1948 and 1954. The outer main-belt asteroid 1596 Itzigsohn, which he discovered himself, was named in his memory on 1 August 1980.  - The La Plata Astronomical Observatory is an observatory located in the city of La Plata, capital of the province of Buenos Aires, Argentina. Its IAU code is 839.  - 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.  - 1581 Abanderada (1950 LA1) is a main belt asteroid discovered on June 15, 1950, by Miguel Itzigsohn at the La Plata Astronomical Observatory in La Plata, Argentina. This object is named in honor of Argentine first lady Eva Perón, and its name may be translated from Spanish as "woman with a banner" - an appellation frequently used in reference to her as a crusader for social and political change. The asteroids 1569 Evita, 1582 Martir, 1588 Descamisada and 1589 Fanatica were also discovered by Itzigsohn near to the time he first detected Abanderada, and were also given names in tribute to Perón. Measurements by IRAS show the asteroid has a low albedo of 0.05.  - 1569 Evita ( 1948 PA ) is a main - belt asteroid discovered on August 3 , 1948 , by Miguel Itzigsohn . This object is named for former Argentine first lady Eva Perón , who was commonly known by the affectionate Spanish diminutive form of her name , Evita . The asteroids 1581 Abanderada , 1582 Martir , 1588 Descamisada and 1589 Fanatica were also discovered by Itzigsohn , and were also given names in tribute to Perón .  - 1588 Descamisada, provisional designation , is an asteroid from the outer region of the asteroid belt, approximately 18 kilometers in diameter. It was discovered on 27 June 1951, by astronomer Miguel Itzigsohn at the La Plata Astronomical Observatory in La Plata, Argentina.  - 1589 Fanatica, provisional designation , is a stony, Vestian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 13 September 1950, by Argentine astronomer Miguel Itzigsohn at La Plata Astronomical Observatory in La Plata, Argentina.  - 1582 Martir (1950 LY) is a main-belt asteroid discovered on June 15, 1950, by Miguel Itzigsohn at La Plata. at the La Plata Astronomical Observatory in La Plata, Argentina. The object was named for Argentine first lady Eva Perón, and its name translates from Spanish to "martyr", a term sometimes given her alongside in relation to her work towards social justice. The asteroids 1569 Evita, 1581 Abanderada, 1588 Descamisada and 1589 Fanatica were also discovered by Itzigsohn, and were also given names in tribute to Perón.    Given the paragraphs above, decide what entity has the relation 'site of astronomical discovery' with 'la plata astronomical observatory'.
A:
1569 evita