Comet 29P/Schwassmann-Wachnmann Epoch 2004 July 14.0 TT = JDT 2453200.5 T 2004 July 10.82680 TT Sato q 5.7235773 (2000.0) P Q n 0.06726259 Peri. 48.95621 +0.99214599 -0.03563979 a 5.9880715 Node 312.71548 -0.02848535 +0.86898886 e 0.0441702 Incl. 9.39208 +0.12179870 +0.49354651 P 14.65 From 11918 observations 1902 Mar. 5-2009 Nov. 24, mean residual 0".72. Comet C/2009 O4 (Hill) Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2010 Jan. 1.28401 TT Sato q 2.5637794 (2000.0) P Q z -0.0003441 Peri. 223.73276 +0.70846080 -0.69507385 +/-0.0000122 Node 172.93883 +0.12813660 +0.29708411 e 1.0008821 Incl. 95.82917 -0.69402039 -0.65468571 From 722 observations 2009 July 30-Nov. 10, mean residual 0".53 Comet 118P/Shoemaker-Levy Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2010 Jan. 2.30875 TT Sato q 1.9839232 (2000.0) P Q n 0.15284585 Peri. 302.14436 -0.07331453 -0.99485569 a 3.4644446 Node 151.80708 +0.95760101 -0.08980492 e 0.4273474 Incl. 8.50941 +0.27861314 +0.04687469 P 6.45 From 952 observations 1995 June 22-2009 Nov. 2, mean residual 0".72. Non- gravitational parameters A1 = +0.09 +/- 0.02, A2 = -0.1833 +/- 0.0007. Comet C/2009 T3 (LINEAR) Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2010 Jan. 12.02373 TT Sato q 2.2813280 (2000.0) P Q z -0.0002009 Peri. 32.43947 +0.81827392 +0.35797608 +/-0.0003320 Node 60.09470 +0.35075384 -0.93081736 e 1.0004583 Incl. 148.74555 +0.45541139 +0.07370319 From 211 observations 2009 Oct. 14-Nov. 18, mean residual 0".54. Comet 82P/Gehrels Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2010 Jan. 12.08181 TT Sato q 3.6333757 (2000.0) P Q n 0.11703390 Peri. 226.26865 -0.27178076 -0.96221017 a 4.1393129 Node 239.50877 +0.88849999 -0.24412241 e 0.1222273 Incl. 1.12610 +0.36973368 -0.12064753 P 8.42 From 98 observations 1975 Oct. 27-2002 Mar. 8, mean residual 0".71. Comet P/2009 T2 (La Sagra) Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2010 Jan. 12.83876 TT Sato q 1.7547365 (2000.0) P Q n 0.04711113 Peri. 215.46924 +0.35824984 -0.89164912 a 7.5925387 Node 215.98587 +0.92778105 +0.37312330 e 0.7688867 Incl. 28.10457 +0.10430421 -0.25639978 P 20.92 From 467 observations 2009 Sept. 18-Nov. 12, mean residual 0".41. Comet 224P/LINEAR-NEAT Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Jan. 31.83302 TT Sato q 1.9895917 (2000.0) P Q n 0.15658692 Peri. 16.09281 +0.55510058 -0.81796352 a 3.4090423 Node 40.52848 +0.73523445 +0.39762699 e 0.4163781 Incl. 13.43605 +0.38896484 +0.41572642 P 6.29 From 90 observations 2003 Nov. 20-2009 Oct. 19, mean residual 0".56. Comet C/2009 K2 (Catalina) Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Feb. 7.52007 TT Sato q 3.2461649 (2000.0) P Q z +0.0006506 Peri. 147.70119 +0.29553335 +0.57374220 +/-0.0000049 Node 123.80559 -0.94715343 +0.07156500 e 0.9978880 Incl. 66.82124 +0.12474138 -0.81590339 From 588 observations 2009 May 18-Nov. 6, mean residual 0".57. Comet 203P/Korlevic Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Feb. 8.21026 TT Sato q 3.1821354 (2000.0) P Q n 0.09841069 Peri. 154.54572 +0.08468962 -0.99522112 a 4.6463065 Node 290.56490 +0.90508125 +0.09723743 e 0.3151258 Incl. 2.97584 +0.41672004 -0.00893375 P 10.02 From 348 observations 1999 Nov. 3-2009 Nov. 17, mean residual 0".69. Comet C/2009 P2 (Boattini) Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Feb. 10.82668 TT Sato q 6.5438932 (2000.0) P Q z -0.0002651 Peri. 76.08388 +0.92778614 -0.27913397 +/-0.0000193 Node 60.39125 -0.33988933 -0.90601305 e 1.0017350 Incl. 163.45504 +0.15390946 -0.31815811 From 303 observations 2008 Oct. 1-2009 Nov. 8, mean residual 0".63. Comet 149P/Mueller Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Feb. 19.19767 TT Sato q 2.6509188 (2000.0) P Q n 0.10919573 Peri. 43.76439 -0.93571383 +0.21113300 a 4.3350982 Node 145.26569 -0.21179750 -0.97689596 e 0.3884986 Incl. 29.73487 +0.28210185 -0.03312297 P 9.03 From 90 observations 1992 Apr. 29-2001 June 28, mean residual 0".75. Comet 157P/Tritton Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Feb. 20.53192 TT Sato q 1.3601699 (2000.0) P Q n 0.15654903 Peri. 148.74427 +0.01640881 -0.99384206 a 3.4095924 Node 300.10832 +0.88922980 +0.06461699 e 0.6010755 Incl. 7.27752 +0.45716640 -0.09001445 P 6.30 From 593 observations 1978 Feb. 11-2009 Nov. 25, mean residual 0".82. Non- gravitational parameters A1 = +0.65 +/- 0.06, A2 = +0.0006 +/- 0.0002. Comet 126P/IRAS Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Feb. 22.66353 TT Sato q 1.7134061 (2000.0) P Q n 0.07343866 Peri. 356.73008 +0.99605652 +0.08417791 a 5.6474566 Node 357.76068 -0.05595354 +0.35086353 e 0.6966057 Incl. 45.83025 -0.06885209 +0.93263544 P 13.42 From 251 observations 1983 June 30-2009 Nov. 10, mean residual 0".85. Non- gravitational parameters A1 = +0.08 +/- 0.05, A2 = -0.0655 +/- 0.0002. Comet 81P/Wild Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Feb. 22.70075 TT Sato q 1.5980595 (2000.0) P Q n 0.15351139 Peri. 41.79332 -0.99858475 -0.03598465 a 3.4544240 Node 136.09716 +0.01950430 -0.93282188 e 0.5373876 Incl. 3.23744 +0.04947804 -0.35853653 P 6.42 From 1928 observations 1995 Jan. 2-2009 Oct. 30, mean residual 0".67. Non- gravitational parameters A1 = +0.09 +/- 0.00, A2 = -0.0103 +/- 0.0001. Comet P/2004 R1 (McNaught) Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Feb. 25.17599 TT Sato q 0.9857082 (2000.0) P Q n 0.17982895 Peri. 0.69127 +0.44853718 +0.89046680 a 3.1085866 Node 295.96114 -0.82042146 +0.37616464 e 0.6829079 Incl. 4.89392 -0.35457442 +0.25606452 P 5.48 From 42 observations 2004 Sept. 2-Nov. 9, mean residual 0".65. Comet 65P/Gunn Epoch 2010 Feb. 13.0 TT = JDT 2455240.5 T 2010 Mar. 2.13685 TT Sato q 2.4403628 (2000.0) P Q n 0.14517152 Peri. 196.63693 -0.09163568 +0.98159067 a 3.5854894 Node 68.35621 -0.89186104 -0.00604690 e 0.3193780 Incl. 10.38666 -0.44292977 -0.19090099 P 6.79 From 2548 observations 1982 Apr. 20-2009 Aug. 25, mean residual 0".75. Non- gravitational parameters A1 = +1.95 +/- 0.02, A2 = +0.2745 +/- 0.0008. Comet 219P/LINEAR Epoch 2010 Mar. 25.0 TT = JDT 2455280.5 T 2010 Mar. 5.71882 TT Sato q 2.3643316 (2000.0) P Q n 0.14100549 Peri. 107.76080 +0.91747782 +0.36620711 a 3.6557686 Node 231.05133 -0.39619603 +0.87615034 e 0.3532600 Incl. 11.52088 +0.03554082 +0.31345323 P 6.99 From 279 observations 2002 June 5-2009 Oct. 19, mean residual 0".69. Comet 162P/Siding Spring Epoch 2010 Mar. 25.0 TT = JDT 2455280.5 T 2010 Mar. 8.42273 TT Sato q 1.2330702 (2000.0) P Q n 0.18479703 Peri. 356.30646 +0.88277475 -0.40266347 a 3.0526199 Node 31.24009 +0.44210420 +0.53777763 e 0.5960617 Incl. 27.81677 +0.15891071 +0.74071408 P 5.33 From 1263 observations 1990 Mar. 23-2009 Sept. 9, mean residual 0".40. Comet C/2009 U3 (Hill) T 2010 Mar. 20.28009 TT Sato q 1.4141560 (2000.0) P Q z +0.0068521 Peri. 77.72080 -0.32543017 -0.73790982 Node 49.32123 +0.21089213 -0.66618508 e 0.9903101 Incl. 51.22719 +0.92174819 -0.10810428 From 174 observations 2009 Oct. 21-Nov. 17, mean residual 0".70. Comet C/2009 O2 (Catalina) Epoch 2010 Mar. 25.0 TT = JDT 2455280.5 T 2010 Mar. 24.38489 TT Sato q 0.6950954 (2000.0) P Q z +0.0036870 Peri. 133.41823 -0.61476449 -0.30744369 +/-0.0000397 Node 310.22964 +0.07395812 +0.89436848 e 0.9974372 Incl. 107.94504 +0.78523552 -0.32493599 From 183 observations 2009 July 27-Oct. 11, mean residual 0".67. Comet P/2001 R6 (LINEAR-Skiff) Epoch 2010 Mar. 25.0 TT = JDT 2455280.5 T 2010 Mar. 26.11570 TT Sato q 2.1786377 (2000.0) P Q n 0.11570246 Peri. 308.44875 +0.92933329 -0.24560270 a 4.1710076 Node 67.32364 +0.35513145 +0.79897923 e 0.4776711 Incl. 17.38642 -0.10110042 +0.54891848 P 8.52 From 100 observations 2001 Aug. 19-2002 Feb. 1, mean residual 0".74. Comet94P/Russell Epoch 2010 Mar. 25.0 TT = JDT 2455280.5 T 2010 Mar. 29.74393 TT Sato q 2.2402722 (2000.0) P Q n 0.14940078 Peri. 92.84315 -0.95460360 -0.27995404 a 3.5175002 Node 70.91566 +0.21207568 -0.87865663 e 0.3631067 Incl. 6.18227 +0.20917905 -0.38676643 P 6.60 From 265 observations 1984 Mar. 7-2009 Jan. 21, mean residual 0".72. Comet 30P/Reinmuth Epoch 2010 May 4.0 TT = JDT 2455320.5 T 2010 Apr. 19.54917 TT Sato q 1.8840712 (2000.0) P Q n 0.13432180 Peri. 13.20703 -0.67951822 -0.72333257 a 3.7760556 Node 119.75455 +0.65962677 -0.67553813 e 0.5010478 Incl. 8.12222 +0.32116587 -0.14296234 P 7.34 From 1267 observations 1957 Sept. 20-2009 Nov. 18, mean residual 0".74. Non- gravitational parameters A1 = +0.13 +/- 0.01, A2 = -0.0126 +/- 0.0002. Comet C/2007 VO53 (Spacewatch) Epoch 2010 May 4.0 TT = JDT 2455320.5 T 2010 Apr. 26.49309 TT Sato q 4.8426659 (2000.0) P Q z +0.0000506 Peri. 75.02914 +0.08637893 -0.49858209 +/-0.0000019 Node 59.73680 -0.15558041 -0.86189273 e 0.9997549 Incl. 86.99024 +0.98403934 -0.09250305 From 232 observations 2007 Oct. 20-2009 Nov. 17, mean residual 0".56. Comet C/2009 K5 (McNaught) Epoch 2010 May 4.0 TT = JDT 2455320.5 T 2010 Apr. 30.01695 TT Sato q 1.4223592 (2000.0) P Q z -0.0006119 Peri. 66.17313 -0.29949709 +0.09769992 +/-0.0000084 Node 257.85642 -0.67324704 +0.68320702 e 1.0008703 Incl. 103.87888 +0.67604727 +0.72365937 From 167 observations 2009 May 27-Sept. 19, mean residual 0".41. Comet 104P/Kowal Epoch 2010 May 4.0 TT = JDT 2455320.5 T 2010 May 4.65602 TT Sato q 1.1796773 (2000.0) P Q n 0.16743869 Peri. 200.55659 +0.24533082 -0.95823922 a 3.2601094 Node 235.51585 +0.91248540 +0.27943603 e 0.6381479 Incl. 10.26843 +0.32738843 -0.06077087 P 5.89 From 416 observations 1991 Dec. 13-2004 Jan. 5, mean residual 0".71. Non- gravitational parameters A1 = +0.31 +/- 0.04, A2 = -0.5111 +/- 0.0009. Comet C/2009 U5 (Grauer) T 2010 Aug. 1.50751 TT Sato q 5.9964745 (2000.0) P Q z +0.0013137 Peri. 27.74692 -0.81728185 -0.44194264 Node 121.16811 +0.41538117 -0.89660175 e 0.9921227 Incl. 25.60479 +0.39938560 +0.02814267 From 51 observations 2009 Oct. 23-Nov. 15, mean residual 0".60. Comet 141P/Machholz-A Epoch 2010 June 13.0 TT = JDT 2455360.5 T 2010 May 24.48935 TT Sato q 0.7577865 (2000.0) P Q n 0.18799695 Peri. 149.37040 +0.80298292 -0.56052201 a 3.0178814 Node 246.08557 +0.49201324 +0.81523526 e 0.7489012 Incl. 12.80246 +0.33636499 +0.14562471 P 5.24 From 416 observations 1994 Oct. 2-2005 Apr. 13, mean residual 0".83. Non- gravitational parameters A1 = -0.26 +/- 0.02, A2 = +0.0102 +/- 0.0001. Comet 141P/Machholz-D Epoch 2010 June 13.0 TT = JDT 2455360.5 T 2010 May 29.79593 TT Sato q 0.7578283 (2000.0) P Q n 0.18771641 Peri. 149.33112 +0.80336867 -0.55996406 a 3.0208875 Node 246.08525 +0.49144759 +0.81557943 e 0.7491372 Incl. 12.80337 +0.33627079 +0.14584391 P 5.25 From 121 observations 1994 Aug. 30-1999 Nov. 26, mean residual 0".83. Non- gravitational parameters A1 = +2.15 +/- 0.19, A2 = +0.5923 +/- 0.0445. Comet 142P/Ge-Wang Epoch 2010 June 13.0 TT = JDT 2455360.5 T 2010 May 30.53444 TT Sato q 2.4880617 (2000.0) P Q n 0.08878328 Peri. 175.73200 +0.99097115 +0.13344909 a 4.9763997 Node 176.51860 -0.12845732 +0.97266479 e 0.5000278 Incl. 12.30632 -0.03840430 +0.19003827 P 11.10 From 45 observations 1988 Oct. 11-1999 Oct. 21, mean residual 0".79. Comet 215P/NEAT Epoch 2010 June 13.0 TT = JDT 2455360.5 T 2010 June 8.04150 TT Sato q 3.2133813 (2000.0) P Q n 0.12217676 Peri. 222.45307 +0.45162581 +0.86609635 a 4.0223233 Node 75.44083 -0.74758358 +0.49842576 e 0.2011131 Incl. 12.78997 -0.48698349 +0.03806402 P 8.07 From 126 observations 1994 Sept. 11-2009 May 19, mean residual 0".61. Comet 43P/Wolf-Harrington Epoch 2010 June 13.0 TT = JDT 2455360.5 T 2010 July 1.75304 TT Sato q 1.3576247 (2000.0) P Q n 0.16091375 Peri. 191.46934 +0.15733960 -0.95316203 a 3.3476543 Node 249.89584 +0.92642078 +0.23305790 e 0.5944549 Incl. 15.96649 +0.34203625 -0.19278525 P 6.13 From 2005 observations 1996 Sept. 21-2009 Oct. 13, mean residual 0".67. Non- gravitational parameters A1 = +0.24 +/- 0.01, A2 = -0.0124 +/- 0.0004. Comet C/2009 R1 (McNaught) Epoch 2010 July 23.0 TT = JDT 2455400.5 T 2010 July 2.68235 TT Sato q 0.4050364 (2000.0) P Q z -0.0008291 Peri. 130.70119 -0.41491924 -0.69128015 +/-0.0000211 Node 322.62207 +0.19337976 +0.56833941 e 1.0003358 Incl. 77.03160 +0.88907046 -0.44623097 From 107 observations 2009 July 20-Nov. 15, mean residual 0".47. Comet 10P/Tempel Epoch 2010 July 23.0 TT = JDT 2455400.5 T 2010 July 4.90725 TT Sato q 1.4226981 (2000.0) P Q n 0.18337599 Peri. 195.66090 +0.68293993 +0.70686621 a 3.0683700 Node 117.82501 -0.64584293 +0.70212320 e 0.5363342 Incl. 12.02234 -0.34129160 +0.08580890 P 5.37 From 1048 observations 1951 Feb. 3-2009 May. 1, mean residual 0".79. Non- gravitational parameters A1 = +0.03 +/- 0.00, A2 = +0.0014 +/- 0.0000. Comet C/2009 U1 (Garradd) T 2010 July 9.1914 TT Sato q 2.976849 (2000.0) P Q Peri. 6.3662 +0.3511562 -0.3696536 Node 67.0468 +0.8125748 -0.3361689 e 1.0 Incl. 69.1037 +0.4652005 +0.8662255 From 6 observations 2009 Oct. 17-18, mean residual 0".38. Comet P/1999 U3 (LINEAR) Epoch 2010 July 23.0 TT = JDT 2455400.5 T 2010 July 18.54218 TT Sato q 1.9213616 (2000.0) P Q n 0.08978668 Peri. 110.15732 +0.50737678 -0.81200035 a 4.9392549 Node 305.97440 +0.59545557 +0.57236330 e 0.6110017 Incl. 20.88373 +0.62289764 +0.11426149 P 10.98 From 199 observations 1999 Oct. 30-2000 Feb. 29, mean residual 0".55. Comet 2P/Encke Epoch 2010 July 23.0 TT = JDT 2455400.5 T 2010 Aug. 6.50104 TT Sato q 0.3358685 (2000.0) P Q n 0.29906506 Peri. 186.54899 -0.94514276 -0.31466522 a 2.2145845 Node 334.56685 +0.30820409 -0.77005391 e 0.8483379 Incl. 11.78307 +0.10823776 -0.55497998 P 3.30 From 1475 observations 1993 July 22-2009 Nov. 11, mean residual 0".61. Non- gravitational parameters A1 = +0.01 +/- 0.00, A2 = -0.0007 +/- 0.0000. Comet 223P/Skiff Epoch 2010 Sept. 1.0 TT = JDT 2455440.5 T 2010 Aug. 14.51998 TT Sato q 2.4200712 (2000.0) P Q n 0.11657955 Peri. 37.84781 +0.89340281 -0.43713118 a 4.1500609 Node 346.82501 +0.21199820 +0.61365992 e 0.4168589 Incl. 27.05506 +0.39609113 +0.65752402 P 8.45 From 161 observations 2001 July 27-2009 Aug. 20, mean residual 0".65. Comet 227P/Catalina-LINEAR Epoch 2010 Sept. 1.0 TT = JDT 2455440.5 T 2010 Sep. 3.69870 TT Sato q 1.7948029 (2000.0) P Q n 0.14491427 Peri. 90.13429 -0.76129855 -0.64255203 a 3.5897314 Node 49.88419 +0.54049052 -0.70290736 e 0.5000175 Incl. 6.52469 +0.35818224 -0.30503793 P 6.80 From 91 observations 1997 Jan. 15-2009 Oct. 23, mean residual 0".70. Comet 31P/Schwassmann-Wachmann Epoch 2010 Oct 11.0 TT = JDT 2455480.5 T 2010 Sep 29.49053 TT Sato q 3.4243239 (2000.0) P Q n 0.11280036 Peri. 17.93244 -0.66983409 -0.73898127 a 4.2422448 Node 114.19007 +0.67116340 -0.64424695 e 0.1928038 Incl. 4.54674 +0.31758775 -0.19711051 P 8.74 From 524 observations 1979 Dec. 14-2009 Jan. 2, mean residual 0".85. Non- gravitational parameters A1 = +1.05 +/- 0.01, A2 = -0.2734 +/- 0.0011. Comet C/2008 FK75 (Lemmon-Siding Spring) Epoch 2010 Oct. 11.0 TT = JDT 2455480.5 T 2010 Sept. 29.26486 TT Sato q 4.5109184 (2000.0) P Q z -0.0005659 Peri. 80.42043 +0.16377951 +0.82386336 +/-0.0000013 Node 218.26829 -0.78064534 +0.44452353 e 1.0025529 Incl. 61.17581 +0.60313275 +0.35163616 From 712 observations 2008 Mar. 31-2009 Oct. 18, mean residual 0".53. Comet P/2002 X2 (NEAT) Epoch 2010 Oct. 11.0 TT = JDT 2455480.5 T 2010 Oct. 4.89656 TT Sato q 2.1271209 (2000.0) P Q n 0.12975628 Peri. 351.86656 +0.38184858 -0.83990107 a 3.8641188 Node 74.97863 +0.86884746 +0.18393571 e 0.4495198 Incl. 23.53674 +0.31511229 +0.51062104 P 7.60 From 118 observations 2002 Oct. 5-2004 Mar. 16, mean residual 0".74. Comet 103P/Hartley Epoch 2010 Oct. 11.0 TT = JDT 2455480.5 T 2010 Oct. 28.21930 TT Sato q 1.0586857 (2000.0) P Q n 0.15232021 Peri. 181.19913 +0.75555006 -0.63754709 a 3.4724103 Node 219.76032 +0.60297718 +0.76667164 e 0.6951150 Incl. 13.61843 +0.25605202 +0.07581757 P 6.47 From 695 observations 1991 July 12-2008 June 4, mean residual 0".74. Non- gravitational parameters A1 = +0.31 +/- 0.01, A2 = +0.0204 +/- 0.0002. Comet P/2000 G1 (LINEAR) Epoch 2010 Nov. 20.0 TT = JDT 2455520.5 T 2010 Nov. 13.95080 TT Sato q 1.0001181 (2000.0) P Q n 0.18446148 Peri. 343.29994 -0.99415207 -0.10236227 a 3.0563207 Node 190.99738 +0.10753785 -0.96750903 e 0.6727706 Incl. 10.39004 -0.00986286 -0.23118877 P 5.34 From 136 observations 2000 Apr. 7-July 7, mean residual 0".66. Comet P/2004 HC18 (LINEAR) Epoch 2010 Dec. 30.0 TT = JDT 2455560.5 T 2010 Dec. 29.59716 TT Sato q 1.7140264 (2000.0) P Q n 0.15107183 Peri. 30.98381 -0.36144433 +0.89727459 a 3.4915134 Node 219.48563 -0.91610778 -0.39234609 e 0.5090879 Incl. 23.49311 -0.17350658 +0.20239282 P 6.52 From 324 observations 2004 Apr. 17-Oct. 12, mean residual 0".61. Comet C/2009 K3 (Beshore) T 2011 Jan. 9.2385 TT Sato q 3.909283 (2000.0) P Q Peri. 251.2861 -0.3212203 +0.9470045 Node 0.0273 +0.9329836 +0.3165118 e 1.0 Incl. 146.6942 -0.1623550 -0.0547979 From 20 observations 2009 May 26-28, mean residual 0".43. Comet 9P/Tempel Epoch 2010 Dec. 30.0 TT = JDT 2455560.5 T 2011 Jan. 12.36552 TT Sato q 1.5103006 (2000.0) P Q n 0.17850669 Peri. 178.92313 -0.37705592 +0.91038357 a 3.1239186793 Node 68.90719 -0.85112255 -0.26803211 e 0.5165365107 Incl. 10.52237 -0.36526598 -0.31521508 P 5.52 From 4832 observations 1967 June 8-2009 Sept. 23, mean residual 0".59. Non- gravitational parameters A1 = +0.02 +/- 0.00, A2 = +0.0017 +/- 0.0000. Comet P/2003 S2 (NEAT) Epoch 2011 Mar. 20.0 TT = JDT 2455640.5 T 2011 Mar. 3.57291 TT Sato q 2.4561212 (2000.0) P Q n 0.13112165 Peri. 283.90313 +0.97096078 -0.19902751 a 3.8372472 Node 87.70143 +0.23617374 +0.88595117 e 0.3599263 Incl. 7.63486 -0.03817244 +0.41890163 P 7.52 From 285 observations 2003 Aug. 1-2004 Feb. 18, mean residual 0".61. Comet P/2005 U1 (Read) Epoch 2011 Mar. 20.0 TT = JDT 2455640.5 T 2011 Mar. 10.89546 TT Sato q 2.3605818 (2000.0) P Q n 0.17499373 Peri. 325.31934 +0.95640417 -0.29153197 a 3.1655880 Node 51.63979 +0.27269988 +0.87024172 e 0.2542991 Incl. 1.26608 +0.10452675 +0.39710005 P 5.63 From 121 observations 2005 Oct. 23-2007 Jan. 27, mean residual 0".54. Comet P/2006 U1 (LINEAR) Epoch 2011 Apr. 29.0 TT = JDT 2455680.5 T 2011 Apr. 15.95499 TT Sato q 0.5108880 (2000.0) P Q n 0.21297671 Peri. 64.22935 +0.56083257 +0.81805576 a 2.7770347 Node 240.47125 -0.80238551 +0.49909515 e 0.8160311 Incl. 8.42488 -0.20406939 +0.28581253 P 4.63 From 357 observations 2006 Oct. 19-2007 Jan. 13, mean residual 0".47. Comet P/2004 T1 (LINEAR-NEAT) Epoch 2011 Apr. 29.0 TT = JDT 2455680.5 T 2011 Apr. 24.86467 TT Sato q 1.7077467 (2000.0) P Q n 0.15233757 Peri. 336.40551 +0.87841520 -0.45381206 a 3.4721465 Node 51.43972 +0.46328393 +0.73170719 e 0.5081582 Incl. 11.04485 +0.11728064 +0.50858549 P 6.47 From 455 observations 2004 July 16-2005 Mar. 7, mean residual 0".66. Comet P/2003 CP7 (LINEAR-NEAT) Epoch 2011 Apr. 29.0 TT = JDT 2455680.5 T 2011 May 17.07644 TT Sato q 3.0328958 (2000.0) P Q n 0.12202478 Peri. 42.47181 -0.98564805 -0.06480504 a 4.0256626 Node 133.09934 +0.02326770 -0.96671958 e 0.2466095 Incl. 12.32654 +0.16720211 -0.24749458 P 8.08 From 133 observations 2003 Feb. 1-June 26, mean residual 0".57. Comet 164P/Christensen Epoch 2011 June 8.0 TT = JDT 2455720.5 T 2011 June 2.34215 TT Sato q 1.6753328 (2000.0) P Q n 0.14115532 Peri. 325.85018 +0.56283458 -0.77774014 a 3.6531812 Node 88.32700 +0.80704874 +0.44392213 e 0.5414044 Incl. 16.26067 +0.17857650 +0.44503193 P 6.98 From 262 observations 1998 Jan. 24-2005 June 18, mean residual 0".69. Comet C/2008 S3 (Boattini) Epoch 2011 June 8.0 TT = JDT 2455720.5 T 2011 June 7.39998 TT Sato q 8.0179033 (2000.0) P Q z -0.0001239 Peri. 39.96404 +0.94225406 +0.23006811 +/-0.0000020 Node 54.94138 +0.17645769 -0.95868988 e 1.0009934 Incl. 162.70416 +0.28464006 -0.16727935 From 312 observations 2008 Sep. 29-2009 Nov. 17, mean residual 0".58. Comet 213P/Van Ness Epoch 2011 June 8.0 TT = JDT 2455720.5 T 2011 June 16.23050 TT Sato q 2.1225409 (2000.0) P Q n 0.15575164 Peri. 3.33234 +0.71870817 +0.68291698 a 3.4212196 Node 312.67171 -0.64197595 +0.57954719 e 0.3795952 Incl. 10.23962 -0.26706824 +0.44469029 P 6.33 From 860 observations 2005 Aug. 4-2009 Apr. 21, mean residual 0".58. Comet 130P/McNaught-Hughes Epoch 2011 June 8.0 TT = JDT 2455720.5 T 2011 June 24.77577 TT Sato q 2.0980618 (2000.0) P Q n 0.14821846 Peri. 224.36551 +0.69123164 +0.71135176 a 3.5361813 Node 89.81416 -0.62258578 +0.67558952 e 0.4066871 Incl. 7.30733 -0.36685933 +0.19379748 P 6.65 From 194 observations 1991 Sept. 14-2006 Jan. 26, mean residual 0".57. Comet 62P/Tsuchinshan Epoch 2011 July 18.0 TT = JDT 2455760.5 T 2011 June 30.39375 TT Sato q 1.3836367 (2000.0) P Q n 0.15467809 Peri. 30.23302 -0.50094264 -0.84887814 a 3.4370315 Node 90.30834 +0.75643798 -0.52414794 e 0.5974326 Incl. 9.71285 +0.42054496 -0.06837283 P 6.37 From 681 observations 1984 Sept. 6-2005 June 7, mean residual 0".78. Non- gravitational parameters A1 = +0.55 +/- 0.01, A2 = -0.0066 +/- 0.0001. Comet 176P/LINEAR Epoch 2011 July 18.0 TT = JDT 2455760.5 T 2011 June 30.93928 TT Sato q 2.5764086 (2000.0) P Q n 0.17232798 Peri. 35.58914 +0.92682114 -0.37550185 a 3.1981502 Node 346.46609 +0.34355822 +0.84900625 e 0.1944066 Incl. 0.23566 +0.15155961 +0.37173478 P 5.72 From 155 observations 1999 Aug. 17-2009 June 22, mean residual 0".51. Comet 123P/West-Hartley Epoch 2011 July 18.0 TT = JDT 2455760.5 T 2011 July 4.47743 TT Sato q 2.1288909 (2000.0) P Q n 0.13000378 Peri. 102.82454 -0.83565764 -0.51444296 a 3.8592128 Node 46.59921 +0.34204519 -0.76152980 e 0.4483614 Incl. 15.35701 +0.42974574 -0.39423446 P 7.58 From 991 observations 1995 Sept. 21-2004 July 20, mean residual 0".72. Comet D/1952 B1 (Harrington-Wilson) Epoch 2004 Dec. 21.0 TT = JDT 2453360.5 T 2004 Dec. 25.79388 TT Muraoka q 1.8835193 (2000.0) P Q n 0.14720736 Peri. 346.16908 -0.35196116 -0.89872211 a 3.5523550 Node 123.82115 +0.88593567 -0.41004163 e 0.4697829 Incl. 18.35212 +0.30206181 +0.15544909 P 6.70 From 7 observations 1952 Jan. 30-Feb. 25, mean residual 0".51. dP = 3.63 days(1951 Orbit). Comet 27P/Crommelin [Orbit 2] Epoch 2011 July 18.0 TT = JDT 2455760.5 T 2011 Aug. 3.79926 TT Muraoka q 0.7478702 (2000.0) P Q n 0.03530090 Peri. 195.97902 +0.09146901 -0.88487095 a 9.2033421 Node 250.63852 +0.95843121 +0.20271805 e 0.9187393 Incl. 28.95670 +0.27026475 -0.41941481 P 27.92 From 237 observations 1873-1984, mean residual 1".52. Nongravitational parameters A1 = +0.24 +/- 0.18, A2 = -0.0004 +/- 0.0001. Comet 27P/Crommelin [Orbit 1] Epoch 2011 July 18.0 TT = JDT 2455760.5 T 2011 Aug. 3.80820 TT Muraoka q 0.7478719 (2000.0) P Q n 0.03529425 Peri. 195.98065 +0.09145127 -0.88487453 a 9.2044981 Node 250.63807 +0.95843618 +0.20269667 e 0.9187493 Incl. 28.95655 +0.27025313 -0.41941761 P 27.93 From 244 observations 1873-1984, mean residual 1".57. Nongravitational parameters A1 = -0.05 +/- 0.06, A2 = -0.0570 +/- 0.0010. Comet 97P/Metcalf-Brewington Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 T 2011 Aug. 21.05805 TT Muraoka q 2.5966564 (2000.0) P Q n 0.09364080 Peri. 228.20965 +0.59924613 -0.80007913 a 4.8027794 Node 185.20824 +0.79490595 +0.59878314 e 0.4593430 Incl. 17.88835 +0.09501902 +0.03649845 P 10.53 From 157 observations 1906-2000, mean residual 1".10. Nongravitational parameters A1 = +0.49 +/- 0.00, A2 = +0.0601 +/- 0.0002. Comet 228P/LINEAR Epoch 2011 Aug. 27.0 TT = JDT 2455800.5 T 2011 Aug. 23.84171 TT Sato q 3.4304743 (2000.0) P Q n 0.11577643 Peri. 114.79338 -0.82320173 -0.56328410 a 4.1692308 Node 31.06625 +0.45838481 -0.73325679 e 0.1771925 Incl. 7.91542 +0.33499593 -0.38084840 P 8.51 From 135 observations 2001 Dec. 9-2009 Nov. 19, mean residual 0".69. Comet 45P/Honda-Mrkos-Pajdusakova Epoch 2011 Oct. 6.0 TT = JDT 2455840.5 T 2011 Sept. 28.75315 TT Sato q 0.5296449 (2000.0) P Q n 0.18777903 Peri. 326.24482 +0.56842591 -0.81938582 a 3.0202159 Node 89.00803 +0.77028886 +0.49836006 e 0.8246334 Incl. 4.25327 +0.28904508 +0.28327394 P 5.25 From 213 observations 1995 Oct. 21-2006 June 6, mean residual 0".81. Non- gravitational parameters A1 = +0.26 +/- 0.00, A2 = -0.0505 +/- 0.0000. ---------------------------------------------------------------- Comet 41P/Tuttle-Giacobini-Kresak Epoch 2011 Nov. 15.0 TT = JDT 2455880.5 T 2011 Nov. 11.63709 TT Sato q 1.0494357 (2000.0) P Q n 0.18167305 Peri. 62.18696 -0.91159915 +0.39854335 a 3.0875148 Node 141.06348 -0.41041407 -0.86841828 e 0.6601034 Incl. 9.22487 -0.02339384 -0.29497948 P 5.43 From 419 observations 2000 Nov. 7-2006 Aug. 27, mean residual 0".76. Comet P/2004 H3 (Larsen) Epoch 2011 Nov. 15.0 TT = JDT 2455880.5 T 2011 Nov. 23.20299 TT Sato q 2.4502468 (2000.0) P Q n 0.12771642 Peri. 346.48950 -0.87303241 +0.40045873 a 3.9051546 Node 220.94697 -0.39860325 -0.91475567 e 0.3725609 Incl. 25.12800 -0.28094459 +0.05343092 P 7.72 From 86 observations 2004 Apr. 22-June 13, mean residual 0".61. Comet 5D/Brorsen [Orbit 2] Epoch 2011 Nov. 15.0 TT = JDT 2455880.5 T 2011 Nov. 26.54718 TT Muraoka q 0.5460658 (2000.0) P Q n 0.17526727 Peri. 22.86807 -0.43306517 -0.85919659 a 3.1622934 Node 93.73456 +0.77902708 -0.50882986 e 0.8273197 Incl. 15.84538 +0.45339987 +0.05360410 P 5.62 From 72 observations 1873-1879, mean residual 2".00. Nongravitational parameters A1 = +1.51 +/- 0.64, A2 = -0.4298 +/- 0.1181. Comet P/2004 R3 (LINEAR-NEAT) Epoch 2011 Nov. 15.0 TT = JDT 2455880.5 T 2011 Nov. 28.70982 TT Sato q 2.1324142 (2000.0) P Q n 0.13164709 Peri. 5.54909 +0.81122670 +0.57752599 a 3.8270300 Node 318.72736 -0.54167602 +0.68328831 e 0.4428018 Incl. 7.97459 -0.22022336 +0.44674468 P 7.49 From 140 observations 2004 Sept. 10-Nov. 16, mean residual 0".60. Comet C/2009 S3 (Lemmon) Epoch 2011 Dec. 25.0 TT = JDT 2455920.5 T 2011 Dec. 11.62183 TT Sato q 6.4795168 (2000.0) P Q z +0.0001799 Peri. 129.71465 +0.72013507 +0.31876166 +/-0.0011944 Node 225.14268 -0.09643715 +0.92558204 e 0.9988342 Incl. 60.38714 +0.68709923 -0.20417859 From 37 observations 2009 Sept. 24-Oct. 25, mean residual 0".34. Comet 37P/Forbes Epoch 2011 Dec. 25.0 TT = JDT 2455920.5 T 2011 Dec. 11.01857 TT Sato q 1.5753107 (2000.0) P Q n 0.15516827 Peri. 329.38868 +0.25341357 +0.96108160 a 3.4297892 Node 315.03122 -0.85301691 +0.16837311 e 0.5406975 Incl. 8.95579 -0.45622770 +0.21902660 P 6.35 From 541 observations 1980 Mar. 12-2006 Jan. 23, mean residual 0".71. Non- gravitational parameters A1 = +0.51 +/- 0.00, A2 = -0.0369 +/- 0.0002. Comet 71P/Clark Epoch 2011 Dec. 25.0 TT = JDT 2455920.5 T 2011 Dec. 15.70125 TT Sato q 1.5674760 (2000.0) P Q n 0.17838960 Peri. 208.83808 -0.03285680 +0.98931116 a 3.1252855 Node 59.60474 -0.88248394 +0.03801366 e 0.4984535 Incl. 9.48028 -0.46919349 -0.14077783 P 5.53 From 383 observations 2001 Aug. 27-2006 Dec. 10, mean residual 0".67. Non- gravitational parameters A1 = +0.53 +/- 0.10, A2 = -0.5291 +/- 0.0306. Comet C/2009 P1 (Garradd) Epoch 2011 Dec. 25.0 TT = JDT 2455920.5 T 2011 Dec. 23.87711 TT Sato q 1.5512615 (2000.0) P Q z -0.0006286 Peri. 90.73925 -0.16661543 -0.82685369 +/-0.0000857 Node 325.98945 -0.58735691 +0.52081100 e 1.0009751 Incl. 106.18731 +0.79199189 +0.21229429 From 90 observations 2009 Aug. 13-Nov. 10, mean residual 0".62. Comet 36P/Whipple Epoch 2011 Dec. 25.0 TT = JDT 2455920.5 T 2011 Dec. 29.58834 TT Sato q 3.0878908 (2000.0) P Q n 0.11541111 Peri. 201.59721 +0.91385785 -0.40597051 a 4.1780245 Node 182.39120 +0.39319895 +0.88925105 e 0.2609209 Incl. 9.93096 +0.10128383 +0.21076174 P 8.54 From 263 observations 1948 July 18-2004 Feb. 16, mean residual 0".69. Non- gravitational parameters A1 = +0.38 +/- 0.06, A2 = -0.0461 +/- 0.0012. Comet C/2009 F4 (McNaught) Epoch 2011 Dec. 25.0 TT = JDT 2455920.5 T 2011 Dec. 31.90398 TT Sato q 5.4549296 (2000.0) P Q z -0.0002983 Peri. 260.38323 +0.04744949 +0.61013542 +/-0.0000141 Node 53.58465 +0.16285574 +0.77644724 e 1.0016274 Incl. 79.35087 -0.98550827 +0.15768463 From 293 observations 2009 Mar. 19-Sept. 12, mean residual 0".49.