Orbital elements: P/2008 U1 (McMillan) T 2008 May 13.1148 TT MPC q 2.526759 (2000.0) P Q n 0.1215274 Peri. 310.5049 +0.9727008 +0.2275095 a 4.036640 Node 36.4120 -0.1827057 +0.8723299 e 0.374044 Incl. 4.4199 -0.1430798 +0.4327585 P 8.11 From 30 observations 2008 Sept. 20-Oct. 26.
Comet P/2008 U1 (McMillan) was discovered by R.S. McMillan (LPL/Spacewatch II, University of Arizona) on the 18th October, 2008. The preliminary orbital elements of the comet indicate a perihelion passage on the 12th May 12, 2008 at a distance of 2.523942 AU from the Sun, and a 8.13 year period.