Year: 2010 Pages: 10
The geocentric 2-body orbits in this paper are preliminary because they ignore the gravity of the Moon, the Sun, and the other planets. Consequently I do not use any observations before August 17, 1999 in deter-mining the orbital elements. Instead, I assume that this comet flyby event triggered the 7.6 magnitude Izmit, Turkey earthquake that occurred on August 17, 1999. My plan is to cure this deficiency (2-body orbit) in a sub-sequent paper that will use the Jet Propulsion Laboratory\'s Horizon Ephemeris System to perform a rigorous numerical integration of the equations of motion. The initial heliocentric state vector for that integration will be computed from the state vector at the perigee of one of the preliminary orbits specified in this paper.