Minor planet (3174), discovered in 1984 by E. Bowell at Lowell Observatory, was named in George Alcock's honour in 1987. The orbit diagram below, showing the relationship between the orbit of (3174) Alcock and the earth, Mars and Jupiter, is courtesy of the International Astronomical Union's Minor Planet Center. An explanation of the diagram is available.
(3174) Alcock is in a 5.59-year elliptical orbit around the sun ranging in distance from 390 million km (at perihelion, closest point to the sun) to 552 million km (at perihelion, furthest point from the sun). The orbit is inclined at about 2 degrees to the ecliptic plane (the plane of the earth's orbit about the sun). There is little information on the physical properties of (3174) Alcock. Even its diameter is uncertain--a range of 12 to 26 km is probable. You will need a telescope to see this minor planet as its maximum brightness is some 1/3678 of the brightness of the faintest objects that can be seen with the unaided eye.