Comet C/2009 S3 (Lemmon) makes its closest approach to the Earth (5.898 AU) on the 19th October, 2012
Comet C/2009 S3 (Lemmon) is at Perihelion (6.475 AU) on the 11th December, 2011.
Comet C/2009 S3 (Lemmon) makes its closest approach to the Earth (5.841 AU) on the 8th October, 2011.
Orbital elements: C/2009 S3 (Lemmon)T 2011 Dec. 10.343 TT MPCq 6.48092 (2000.0) P Q Peri. 129.636 +0.719811 +0.320122 Node 225.114 -0.098051 +0.925309e 1.0 Incl. 60.385 +0.687211 -0.203285From 37 observations 2009 Sept. 24-Oct. 25.
Orbital elements: C/2009 S3 (Lemmon)T 2011 Dec. 24.604 TT MPCq 6.66753 (2000.0) P Q Peri. 129.422 +0.727204 +0.344492 Node 223.288 -0.124650 +0.916838e 1.0 Incl. 59.985 +0.675009 -0.201823From 34 observations 2009 Sept. 24-28.
Orbital elements: C/2009 S3 (Lemmon)T 2011 Dec. 25.349 TT MPCq 6.68049 (2000.0) P Q Peri. 129.389 +0.727478 +0.346210 Node 223.179 -0.126569 +0.916260e 1.0 Incl. 59.962 +0.674356 -0.201511From 30 observations 2009 Sept. 24-27.