February 9, 2003 13:00 UT Comet (D/1783 W1) = P/2003 A1 The following improved orbital elements by Kenji Muraoka, are from 130 observations 1783 to 2003, including 8 Planets, Moon and 3 minor planets perturbations and non-gravitational effect of style II. The mean residual is +/- 1.04 arc seconds(97 obs. of 2003). Epoch = 2003 Feb. 10.0 TT JDT = 2452680.5 T = 2003 Feb. 1.720963 +/- 0.034100 (m.e.) TT Peri. = 357.294321 +/- 0.015365 Node = 55.261185 +/- 0.001078 (2000.0) Incl. = 46.238673 +/- 0.002057 q = 1.91181503 +/- 0.00005584 AU e = 0.47126301 +/- 0.00001906 a = 3.61581480 +/- 0.00004639 AU nK = 0.143349046 +/- 0.000002759 P = 6.876 +/- 0.00013232 years A1 = -15.143 +/- 0.942 A2 = -0.73006 +/- 0.00448 T = 1996 Mar. 13.14215 TT Epoch = 1996 Mar. 18.0 TT Peri. = 357.09457 e = 0.4706038 Node = 55.32017 (2000.0) a = 3.6215828 AU Incl. = 46.20329 nK = 0.143006720 q = 1.9172522 AU P = 6.892 years T = 1989 Apr. 24.74552 TT Epoch = 1989 Apr. 24.0 TT Peri. = 357.16899 e = 0.4699236 Node = 55.31453 (2000.0) a = 3.6247100 AU Incl. = 46.19732 nK = 0.142821690 q = 1.9213732 AU P = 6.901 years T = 1982 May 30.30536 TT Epoch = 1982 May 31.0 TT Peri. = 357.11612 e = 0.4690093 Node = 55.30948 (2000.0) a = 3.6304454 AU Incl. = 46.15374 nK = 0.142483380 q = 1.9277328 AU P = 6.917 years T = 1975 July 4.08735 TT Epoch = 1975 July 7.0 TT Peri. = 357.04122 e = 0.4702837 Node = 55.32367 (2000.0) a = 3.6235924 AU Incl. = 46.20669 nK = 0.142887770 q = 1.9194761 AU P = 6.898 years T = 1968 Aug. 22.20022 TT Epoch = 1968 Aug. 12.0 TT Peri. = 356.79824 e = 0.4767575 Node = 55.41203 (2000.0) a = 3.6013240 AU Incl. = 46.31517 nK = 0.144215115 q = 1.8843657 AU P = 6.834 years T = 1961 Oct. 20.08428 TT Epoch = 1961 Oct. 28.0 TT Peri. = 356.59325 e = 0.4769305 Node = 55.47614 (2000.0) a = 3.5999616 AU Incl. = 46.32176 nK = 0.144296990 q = 1.8830303 AU P = 6.830 years T = 1954 Dec. 1.49454 TT Epoch = 1954 Dec. 4.0 TT Peri. = 356.03246 e = 0.4675160 Node = 55.65138 (2000.0) a = 3.6322857 AU Incl. = 46.15955 nK = 0.142375111 q = 1.9341338 AU P = 6.923 years T = 1947 Dec. 25.21403 TT Epoch = 1948 Jan. 10.0 TT Peri. = 355.91214 e = 0.4663542 Node = 55.69353 (2000.0) a = 3.6409493 AU Incl. = 46.09958 nK = 0.141867241 q = 1.9429774 AU P = 6.947 years T = 1941 Jan. 18.06707 TT Epoch = 1941 Jan. 6.0 TT Peri. = 355.96523 e = 0.4672782 Node = 55.67779 (2000.0) a = 3.6384148 AU Incl. = 46.13821 nK = 0.142015502 q = 1.9382629 AU P = 6.940 years T = 1934 Feb. 13.86816 TT Epoch = 1934 Feb. 12.0 TT Peri. = 356.01734 e = 0.4672579 Node = 55.66048 (2000.0) a = 3.6378419 AU Incl. = 46.11717 nK = 0.142049050 q = 1.9380315 AU P = 6.939 years T = 1927 Mar. 10.43852 TT Epoch = 1927 Mar. 21.0 TT Peri. = 355.84931 e = 0.4683441 Node = 55.70365 (2000.0) a = 3.6311470 AU Incl. = 46.16678 nK = 0.142442088 q = 1.9305207 AU P = 6.919 years T = 1920 June 10.99166 TT Epoch = 1920 June 5.0 TT Peri. = 354.80589 e = 0.5241901 Node = 56.39413 (2000.0) a = 3.4946737 AU Incl. = 46.38782 nK = 0.150866958 q = 1.6628002 AU P = 6.533 years T = 1913 Nov. 26.22456 TT Epoch = 1913 Nov. 9.0 TT Peri. = 354.60205 e = 0.5241592 Node = 56.45489 (2000.0) a = 3.4964658 AU Incl. = 46.37926 nK = 0.150750981 q = 1.6637610 AU P = 6.538 years T = 1907 May 2.85342 TT Epoch = 1907 Apr. 15.0 TT Peri. = 354.24499 e = 0.5184384 Node = 56.53990 (2000.0) a = 3.5173224 AU Incl. = 46.23509 nK = 0.149412111 q = 1.6938074 AU P = 6.597 years T = 1900 Sep. 22.56732 TT Epoch = 1900 Sep. 18.0 TT Peri. = 354.12207 e = 0.5175548 Node = 56.57940 (2000.0) a = 3.5251903 AU Incl. = 46.17898 nK = 0.148912178 q = 1.7007112 AU P = 6.619 years T = 1894 Feb. 11.78960 TT Epoch = 1894 Feb. 21.0 TT Peri. = 354.11485 e = 0.5178212 Node = 56.56468 (2000.0) a = 3.5250004 AU Incl. = 46.20070 nK = 0.148924216 q = 1.6996804 AU P = 6.618 years T = 1887 July 2.26827 TT Epoch = 1887 June 18.0 TT Peri. = 354.09758 e = 0.5169927 Node = 56.55741 (2000.0) a = 3.5301092 AU Incl. = 46.14998 nK = 0.148601045 q = 1.7050685 AU P = 6.633 years T = 1880 Nov. 16.90616 TT Epoch = 1880 Nov. 21.0 TT Peri. = 354.01166 e = 0.5182943 Node = 56.56090 (2000.0) a = 3.5245937 AU Incl. = 46.20597 nK = 0.148949993 q = 1.6978168 AU P = 6.617 years T = 1874 Apr. 14.22206 TT Epoch = 1874 Apr. 27.0 TT Peri. = 353.95398 e = 0.5207629 Node = 56.57296 (2000.0) a = 3.5155251 AU Incl. = 46.24361 nK = 0.149526708 q = 1.6847702 AU P = 6.592 years T = 1867 Sep. 11.63649 TT Epoch = 1867 Oct. 1.0 TT Peri. = 353.76656 e = 0.5217151 Node = 56.61901 (2000.0) a = 3.5108677 AU Incl. = 46.28783 nK = 0.149824340 q = 1.6791951 AU P = 6.578 years T = 1861 Apr. 1.38921 TT Epoch = 1861 Apr. 15.0 TT Peri. = 353.21074 e = 0.5623267 Node = 57.23081 (2000.0) a = 3.4168794 AU Incl. = 46.33665 nK = 0.156048500 q = 1.4954770 AU P = 6.316 years T = 1854 Dec. 6.03263 TT Epoch = 1854 Dec. 8.0 TT Peri. = 353.00722 e = 0.5625378 Node = 57.28779 (2000.0) a = 3.4175996 AU Incl. = 46.33689 nK = 0.155999176 q = 1.4950706 AU P = 6.318 years T = 1848 July 7.42369 TT Epoch = 1848 June 22.0 TT Peri. = 351.91485 e = 0.5467453 Node = 57.57533 (2000.0) a = 3.4683699 AU Incl. = 46.06138 nK = 0.152586445 q = 1.5720549 AU P = 6.459 years T = 1842 Jan. 17.97235 TT Epoch = 1842 Jan. 5.0 TT Peri. = 351.75180 e = 0.5461698 Node = 57.63057 (2000.0) a = 3.4737259 AU Incl. = 46.01886 nK = 0.152233683 q = 1.5764818 AU P = 6.474 years T = 1835 July 27.86654 TT Epoch = 1835 July 21.0 TT Peri. = 351.63546 e = 0.5445917 Node = 57.63687 (2000.0) a = 3.4812914 AU Incl. = 45.97061 nK = 0.151737702 q = 1.5854089 AU P = 6.495 years T = 1829 Jan. 25.09595 TT Epoch = 1829 Feb. 2.0 TT Peri. = 351.54930 e = 0.5435656 Node = 57.66198 (2000.0) a = 3.4891289 AU Incl. = 45.90491 nK = 0.151226727 q = 1.5925583 AU P = 6.517 years T = 1822 July 25.39803 TT Epoch = 1822 July 9.0 TT Peri. = 351.53118 e = 0.5443197 Node = 57.64155 (2000.0) a = 3.4870452 AU Incl. = 45.94284 nK = 0.151362298 q = 1.5889777 AU P = 6.512 years T = 1816 Jan. 21.99903 TT Epoch = 1816 Jan. 22.0 TT Peri. = 351.51586 e = 0.5437941 Node = 57.63023 (2000.0) a = 3.4906894 AU Incl. = 45.89709 nK = 0.151125330 q = 1.5924731 AU P = 6.522 years T = 1809 July 19.38477 TT Epoch = 1809 Aug. 6.0 TT Peri. = 351.42583 e = 0.5451029 Node = 57.63612 (2000.0) a = 3.4847832 AU Incl. = 45.95943 nK = 0.151509699 q = 1.5852178 AU P = 6.505 years T = 1803 Jan. 24.20205 TT Epoch = 1803 Jan. 10.0 TT Peri. = 351.30461 e = 0.5478402 Node = 57.66192 (2000.0) a = 3.4759071 AU Incl. = 45.98640 nK = 0.152090411 q = 1.5716654 AU P = 6.480 years T = 1796 Aug. 1.92460 TT Epoch = 1796 July 24.0 TT Peri. = 351.12936 e = 0.5487606 Node = 57.70174 (2000.0) a = 3.4713799 AU Incl. = 46.02722 nK = 0.152388029 q = 1.5664234 AU P = 6.468 years T = 1790 Mar. 14.11780 TT Epoch = 1790 Mar. 18.0 TT Peri. = 350.81668 e = 0.5697673 Node = 58.11883 (2000.0) a = 3.4205935 AU Incl. = 46.05932 nK = 0.155794413 q = 1.4716513 AU P = 6.326 years T = 1783 Nov. 14.48007 TT Epoch = 1783 Nov. 10.0 TT Peri. = 350.61999 e = 0.5700013 Node = 58.17681 (2000.0) a = 3.4209830 AU Incl. = 46.05729 nK = 0.155767805 q = 1.4710181 AU P = 6.327 years * 1783 minutes of arc 030106 670 (1.6- 3.8+) 030115 448 1.8+ 1.3- 831120 500 47.4+ 0.2- 030106 448 0.7- 0.1- 030116 204 1.7+ 0.5- 831121 500 46.8+ 0.4+ 030106 474 0.3+ 0.6+ 030116 204 0.7+ 0.6- 831122 500 46.0+ 1.2+ 030106 474 0.7+ 1.2+ 030116 204 1.3+ 1.0- 831123 500 45.1+ 2.2+ 030106 474 0.8+ 0.4- 030116 204 1.0+ 1.0- 831124 500 44.0+ 3.3+ 030106 474 (2.8- 3.9-) 030117 448 2.0+ 0.6- 831125 500 42.8+ 4.6+ 030106 474 1.3+ 2.5+ 030117 448 2.2+ 0.5- 831126 500 41.5+ 6.0+ 030107 704 0.7+ 2.1+ 030117 448 1.5+ 0.8- 831127 500 40.1+ 7.5+ 030107 704 1.0- 0.3+ 030117 360 1.1+ 1.4- 831128 500 38.6+ 9.1+ 030107 858 0.4- 0.2+ 030117 360 1.3+ 1.1- 831129 500 37.0+ 10.8+ 030107 858 0.5- 0.7+ 030117 360 1.7+ 1.0- 831130 500 35.3+ 12.5+ 030107 704 (2.6+ 1.6+) 030117 246 1.4+ 1.7- 831201 500 33.6+ 14.3+ 030107 704 1.5- 1.0+ 030117 246 1.0+ 1.6- 831202 500 31.9+ 16.2+ 030107 858 0.1- 0.8+ 030117 246 2.2+ 0.9- 831203 500 30.1+ 18.0+ 030107 608 0.7- 0.0 030117 246 2.1+ 1.4- 831204 500 28.3+ 19.9+ 030107 608 0.7- 0.7+ 030117 246 2.0+ 1.1- 831205 500 26.6+ 21.7+ 030107 608 0.6- 0.3+ 030117 246 2.2+ 1.0- 831206 500 24.8+ 23.5+ 030108 704 0.5+ 0.5+ 030124 372 (3.1+ 1.2+) 831207 500 23.0+ 25.3+ 030108 704 0.3- 0.3+ 030125 J95 0.2+ 0.0 831208 500 21.2+ 27.1+ 030108 704 0.5- 0.1+ 030125 J95 0.6+ 0.1+ 831209 500 19.4+ 28.9+ 030108 858 0.6+ 0.1- 030126 J95 0.0 0.2- 831210 500 17.7+ 30.6+ 030108 704 (3.5- 0.5-) 030126 J95 0.0 0.7- 831211 500 16.0+ 32.2+ 030108 858 1.2+ 0.3+ 030128 608 0.7+ 0.9+ 831212 500 14.4+ 33.9+ 030108 704 0.4- 0.3+ 030128 608 1.2+ 0.1+ 831213 500 12.8+ 35.4+ 030108 608 0.7- 0.6- 030128 608 0.6+ 0.3+ 831214 500 11.2+ 36.9+ 030108 608 1.0- 0.8- 030128 372 1.0+ 2.0+ 831215 500 9.7+ 38.4+ 030108 608 0.7- 0.9- 030128 340 (3.2+ 0.8-) 831216 500 8.2+ 39.8+ 030108 246 1.0- 0.4+ 030128 340 1.9+ 0.4- 831217 500 6.8+ 41.2+ 030108 246 0.1+ 0.3- 030128 340 (1.3+ 3.0-) 831218 500 5.4+ 42.5+ 030108 246 0.6- 0.4- 030128 340 1.8+ 1.9+ 831219 500 4.1+ 43.8+ 030108 246 1.4- 0.4- 030129 J95 0.8- 0.3+ 831220 500 2.8+ 45.0+ 030108 246 0.1- 0.2- 030129 J95 0.7- 0.7+ 831221 500 1.6+ 46.2+ 030108 246 0.5- 0.2- 030201 349 0.6- 0.0 831222 500 0.5+ 47.3+ 030108 557 0.4+ 0.5+ 030201 349 0.2- 0.9+ * 2003 seconds of arc 030108 557 0.2- 0.2- 030201 349 0.1+ 1.2+ 030105 704 1.1- 2.1+ 030108 557 0.7- 0.4- 030201 215 1.7- 0.8+ 030105 704 1.8- 1.5+ 030108 557 0.3- 0.1+ 030201 J95 1.2- 0.8+ 030105 704 1.3- 1.9+ 030108 557 0.5- 0.7- 030201 J95 1.4- 0.4+ 030106 446 0.9- 0.1+ 030108 176 0.7+ 0.0 030203 360 1.5- 0.5+ 030106 446 1.2- 0.2- 030108 176 0.0 1.1- 030203 360 1.2- 0.4+ 030106 446 0.4- 0.3+ 030108 176 0.7- 2.0- 030204 608 2.0- 0.5+ 030106 446 1.2- 0.3+ 030111 349 0.9+ 0.5- 030204 608 0.7- 0.7+ 030106 446 1.6- 0.4+ 030111 349 0.1- 0.1- 030204 608 2.5- 0.3- 030106 446 0.6- 0.8+ 030111 213 0.7+ 0.0 030204 608 1.5- 0.0 030106 448 0.5- 0.0 030111 213 0.5+ 0.6- 030204 608 2.5- 0.4- 030106 670 (0.4- 3.3+) 030115 448 1.5+ 1.5- 030204 608 1.1- 0.6+ 030106 448 2.3- 0.6- 030115 448 1.9+ 1.1- --