217P/LINEAR
Orbital Elements
The following orbital elements are taken from MPC 65648:217P/LINEAR Epoch 2009 Sept. 6.0 TT = JDT 2455080.5 T 2009 Sept. 8.9669 TT MPC q 1.223980 (2000.0) P Q n 0.1258685 Peri. 246.7444 +0.9580029 -0.2222396 a 3.943283 Node 125.6220 +0.2656078 +0.9258980 e 0.689604 Incl. 12.8814 -0.1080881 +0.3054873 P 7.83 From 371 observations 2001-2009, mean residual 0".7.Elements are also available for the current standard epoch:
217P/LINEAR Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2009 Sept. 8.9694 TT MPC q 1.224011 (2000.0) P Q n 0.1258951 Peri. 246.7486 +0.9579894 -0.2222957 a 3.942729 Node 125.6211 +0.2656630 +0.9258816 e 0.689552 Incl. 12.8815 -0.1080717 +0.3054963 P 7.83An explanation of the orbital elements is available.
These orbital elements are also available in forms suitable for loading into a number of popular planetarium-type software programs.
Ephemeris
The following ephemeris is at intervals of five days. A daily ephemeris covering the same time interval is also available.Personalized ephemerides for this (and other) objects may be generated using the Minor Planet & Comet Ephemeris Service.
Recent magnitude estimates for this comet (as reported to the ICQ) may be available.
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2WARNING! 2010 01 24 05 31.24 +14 06.0 1.189 2.033 138.4 18.8 15.5 2010 01 29 05 32.12 +15 04.1 1.266 2.074 133.8 20.0 15.7 2010 02 03 05 33.75 +15 57.7 1.348 2.115 129.4 21.1 15.9 2010 02 08 05 36.07 +16 46.8 1.433 2.156 125.0 22.0 16.1 2010 02 13 05 39.02 +17 31.8 1.522 2.197 120.8 22.7 16.3 2010 02 18 05 42.55 +18 12.9 1.614 2.238 116.6 23.2 16.5 2010 02 23 05 46.60 +18 50.1 1.708 2.279 112.6 23.6 16.7 2010 02 28 05 51.11 +19 23.7 1.804 2.320 108.7 23.9 16.9 2010 03 05 05 56.01 +19 53.9 1.903 2.361 104.9 24.0 17.1 2010 03 10 06 01.28 +20 20.9 2.003 2.401 101.1 23.9 17.3 2010 03 15 06 06.86 +20 44.7 2.105 2.442 97.4 23.8 17.5 2010 03 20 06 12.73 +21 05.7 2.207 2.482 93.8 23.6 17.7 2010 03 25 06 18.84 +21 23.7 2.311 2.522 90.3 23.3 17.8 2010 03 30 06 25.15 +21 39.1 2.415 2.561 86.8 22.9 18.0 2010 04 04 06 31.65 +21 52.0 2.519 2.601 83.4 22.5 18.2 2010 04 09 06 38.29 +22 02.3 2.623 2.640 80.0 21.9 18.3 2010 04 14 06 45.06 +22 10.3 2.727 2.679 76.6 21.4 18.5 2010 04 19 06 51.94 +22 15.9 2.830 2.718 73.3 20.7 18.6 2010 04 24 06 58.91 +22 19.4 2.933 2.756 70.0 20.1 18.7 2010 04 29 07 05.94 +22 20.8 3.034 2.795 66.8 19.3 18.9 2010 05 04 07 13.02 +22 20.2 3.134 2.833 63.6 18.6 19.0 2010 05 09 07 20.14 +22 17.7 3.233 2.871 60.3 17.8 19.1 2010 05 14 07 27.28 +22 13.4 3.330 2.908 57.2 17.0 19.2 2010 05 19 07 34.43 +22 07.3 3.424 2.946 54.0 16.1 19.4 2010 05 24 07 41.58 +21 59.5 3.517 2.983 50.8 15.3 19.5 2010 05 29 07 48.71 +21 50.2 3.607 3.019 47.7 14.4 19.6 2010 06 03 07 55.82 +21 39.5 3.695 3.056 44.6 13.5 19.7 2010 06 08 08 02.90 +21 27.3 3.779 3.092 41.4 12.5 19.8 2010 06 13 08 09.94 +21 13.8 3.861 3.128 38.3 11.6 19.9 2010 06 18 08 16.94 +20 59.1 3.940 3.164 35.2 10.7 20.0 2010 06 23 08 23.88 +20 43.2 4.015 3.200 32.1 9.7 20.1 2010 06 28 08 30.77 +20 26.3 4.087 3.235 28.9 8.7 20.2 2010 07 03 08 37.59 +20 08.4 4.155 3.270 25.8 7.8 20.2 2010 07 08 08 44.34 +19 49.7 4.220 3.305 22.7 6.8 20.3 2010 07 13 08 51.02 +19 30.1 4.280 3.339 19.5 5.8 20.4 2010 07 18 08 57.62 +19 09.8 4.336 3.373 16.4 4.9 20.5 2010 07 23 09 04.14 +18 48.9 4.389 3.407 13.2 3.9 20.5 2010 07 28 09 10.56 +18 27.5 4.437 3.441 10.1 3.0 20.6 2010 08 02 09 16.90 +18 05.6 4.480 3.475 7.0 2.0 20.7 2010 08 07 09 23.14 +17 43.4 4.519 3.508 4.1 1.2 20.7 2010 08 12 09 29.28 +17 20.9 4.553 3.541 2.4 0.7 20.8 2010 08 17 09 35.31 +16 58.3 4.583 3.574 4.1 1.2 20.8 2010 08 22 09 41.24 +16 35.6 4.608 3.606 7.1 2.0 20.9 2010 08 27 09 47.04 +16 12.9 4.628 3.639 10.3 2.9 20.9 2010 09 01 09 52.73 +15 50.4 4.644 3.671 13.7 3.7 21.0 2010 09 06 09 58.29 +15 28.0 4.654 3.703 17.1 4.6 21.0 2010 09 11 10 03.73 +15 06.0 4.660 3.734 20.6 5.4 21.1 2010 09 16 10 09.02 +14 44.5 4.661 3.765 24.1 6.3 21.1 2010 09 21 10 14.16 +14 23.5 4.657 3.797 27.7 7.1 21.1 2010 09 26 10 19.15 +14 03.2 4.649 3.827 31.3 7.8 21.2 2010 10 01 10 23.98 +13 43.6 4.636 3.858 35.0 8.6 21.2 2010 10 06 10 28.64 +13 24.9 4.618 3.888 38.7 9.3 21.2 2010 10 11 10 33.12 +13 07.3 4.596 3.919 42.5 9.9 21.2 2010 10 16 10 37.41 +12 50.8 4.570 3.949 46.4 10.5 21.3 2010 10 21 10 41.49 +12 35.6 4.540 3.978 50.3 11.1 21.3 2010 10 26 10 45.36 +12 21.8 4.506 4.008 54.3 11.6 21.3 2010 10 31 10 49.00 +12 09.5 4.468 4.037 58.4 12.1 21.3 2010 11 05 10 52.40 +11 58.9 4.427 4.066 62.6 12.5 21.3 2010 11 10 10 55.54 +11 50.2 4.383 4.095 66.8 12.8 21.3 2010 11 15 10 58.40 +11 43.3 4.336 4.124 71.1 13.1 21.3 2010 11 20 11 00.98 +11 38.6 4.287 4.152 75.5 13.3 21.3 2010 11 25 11 03.25 +11 36.0 4.236 4.180 80.0 13.5 21.3 2010 11 30 11 05.20 +11 35.8 4.184 4.208 84.6 13.5 21.3 2010 12 05 11 06.82 +11 37.9 4.131 4.236 89.3 13.5 21.3 2010 12 10 11 08.07 +11 42.6 4.078 4.263 94.1 13.3 21.3 2010 12 15 11 08.96 +11 49.8 4.025 4.291 99.0 13.1 21.3 2010 12 20 11 09.47 +11 59.7 3.972 4.318 104.0 12.8 21.3 2010 12 25 11 09.58 +12 12.1 3.922 4.345 109.1 12.3 21.3 2010 12 30 11 09.29 +12 27.1 3.873 4.372 114.4 11.8 21.3 2011 01 04 11 08.60 +12 44.5 3.828 4.398 119.7 11.2 21.3 2011 01 09 11 07.50 +13 04.4 3.786 4.424 125.1 10.5 21.3 2011 01 14 11 06.01 +13 26.4 3.748 4.451 130.6 9.7 21.4 2011 01 19 11 04.13 +13 50.3 3.715 4.476 136.1 8.8 21.4 2011 01 24 11 01.90 +14 15.8 3.688 4.502 141.7 7.8 21.4 2011 01 29 10 59.33 +14 42.6 3.667 4.528 147.4 6.7 21.4 2011 02 03 10 56.46 +15 10.2 3.653 4.553 153.0 5.6 21.4 2011 02 08 10 53.35 +15 38.3 3.646 4.578 158.6 4.5 21.4 2011 02 13 10 50.03 +16 06.2 3.646 4.603 163.9 3.4 21.4 2011 02 18 10 46.58 +16 33.7 3.655 4.628 168.6 2.4 21.5 2011 02 23 10 43.04 +17 00.3 3.672 4.652 171.6 1.8 21.5 2011 02 28 10 39.49 +17 25.5 3.696 4.677 170.8 1.9 21.5This comet gets close to the sun during the period covered in the ephemeris below. Observers are warned to be wary of observing comets near the sun. NEVER point any kind of optical instrument at the sun--instant blindness will be the probable result.
