Comet C/2009 P1 (Garradd) makes its closest approach to the Earth on the 23rd August, 2011. (1.391 AU) Comet C/2009 P1 (Garradd) is at Perihelion on the 23rd December, 2011. (1.551 AU) Comet C/2009 P1 (Garradd) makes its closest approach to the Earth on the 5th March, 2012. (1.266 AU)