Question: Information:  - 1867 Deiphobus , provisional designation 1971 EA , is a large Jupiter trojan , about 123 kilometers in diameter . It was discovered by Argentine astronomers Carlos Cesco and A. G. Samuel at the Leoncito Astronomical Complex in Argentina on 3 March 1971 . The D - type minor planet orbits the Sun at a distance of 4.9 -- 5.4 AU once every 11.61 years ( 4,242 days ) . It has an albedo of 0.042 . Photometric observations of this asteroid during 1994 were used to build a light curve showing a slow rotation period of 58.66 ± 0.18 hours with a brightness variation of 0.27 ± 0.03 magnitude . It was named after the Trojan warrior , Deiphobus , son of Priamus ( also see 108 Hecuba and 884 Priamus ) .  - The El Leoncito Astronomical Complex (Spanish: Complejo Astronómico El Leoncito - CASLEO) is an astronomical observatory in the San Juan Province of Argentina. CASLEO is one of two observatories located within El Leoncito National Park, which is in a part of the country which rarely sees cloud cover. The other facility in the park is the Carlos U. Cesco Astronomical Station of the Félix Aguilar Observatory. CASLEO was established in 1983 by an agreement between National Scientific and Technical Research Council (CONICET) of Argentina, the Ministry of Science, Technology and Innovation (MINCYT) of Argentina, the National University of San Juan (UNSJ), the National University of La Plata (UNLP), and the National University of Córdoba (UNC). The facility was dedicated in 1986 and regular observations began in 1987.  - Félix Aguilar Observatory (Spanish: Observatorio Félix Aguilar, or Observatorio Astronómico Félix Aguilar - OAFA) is an astronomical observatory in the San Juan Province of Argentina. Its primary observing facility is located El Leoncito National Park in the west of San Juan Province. Also located in El Leoncito Park is the Leoncito Astronomical Complex. The remote site was known as "El Leoncito Observatory" until 1990, when it became Carlos Ulrrico Cesco Astronomical Station (Spanish: Estación Astronómica Carlos Ulrrico Cesco - EACUC). The observatory is operated by the School of Physical and Natural Sciences at National University of San Juan in San Juan, Argentina. The original OAFA observatory buildings are located at the west end of the city.    What object entity has the relation of 'discoverer or inventor' with the subject '1867 deiphobus'?   Choices: - carlos ulrrico cesco  - félix aguilar observatory
Answer:
carlos ulrrico cesco