2074 Shoemaker and calculates a diameter of 4.93 kilometers based on an absolute magnitude of 13.9. This minor planet was named by the discoverer after her colleague, the American astronomer Eugene Shoemaker (1928–1997), who was a discoverer of minor planets and of the Comet Shoemaker–Levy 9 that collided with Jupiter. He is well known for his work on impact craters and his role in the lunar Ranger, Surveyor and Apollo programs. The naming was also proposed by Brian G. Marsden, the director of the Minor Planet Center (MPC). The official naming citation was published by the MPC before November 1977 (). 2074
Astronomical symbols Ω (capital omega), which was originally a typographical substitute for the astronomical symbol. The symbols for aspects first appear in Byzantine codices. Of the symbols for the five Ptolemaic aspects, only the three displayed here—for conjunction, opposition, and quadrature—are used in astronomy. Symbols for a comet (☄) and a star () have been used in published astronomical observations of comets. In tables of these observations, ☄ stood for the comet being discussed and for the star of comparison relative to which measurements of the comet's position were made. Astronomical symbols Astronomical symbols are abstract pictorial symbols used to represent astronomical