P/2007 R1 (Larson)
Orbital Elements
The following orbital elements are taken from MPC 65645:P/2007 R1 (Larson) Epoch 2007 Aug. 8.0 TT = JDT 2454320.5 T 2007 Aug. 23.0081 TT MPC q 4.351879 (2000.0) P Q n 0.0666789 Peri. 175.0500 +0.9983336 +0.0575691 a 6.022964 Node 181.6654 -0.0565254 +0.9616675 e 0.277452 Incl. 7.8776 -0.0116169 +0.2681072 P 14.8 From 220 observations 2007 Sept. 4-2009 Feb. 16, mean residual 0".7.Elements are also available for the current standard epoch:
P/2007 R1 (Larson) Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2007 Aug. 25.0157 TT MPC q 4.354467 (2000.0) P Q n 0.0664723 Peri. 175.3125 +0.9985643 +0.0534216 a 6.035437 Node 181.6407 -0.0525132 +0.9618797 e 0.278517 Incl. 7.8742 -0.0105646 +0.2682044 P 14.8An 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! 2009 10 26 05 55.98 +14 43.9 4.783 5.391 123.1 8.9 18.7 2009 10 31 05 55.17 +14 36.2 4.730 5.401 128.2 8.3 18.7 2009 11 05 05 54.04 +14 28.8 4.682 5.411 133.4 7.7 18.7 2009 11 10 05 52.62 +14 21.8 4.639 5.421 138.6 6.9 18.7 2009 11 15 05 50.93 +14 15.3 4.601 5.431 143.8 6.2 18.7 2009 11 20 05 48.99 +14 09.2 4.570 5.441 149.1 5.4 18.7 2009 11 25 05 46.82 +14 03.8 4.545 5.451 154.3 4.5 18.7 2009 11 30 05 44.48 +13 59.1 4.527 5.461 159.4 3.6 18.7 2009 12 05 05 42.01 +13 55.1 4.517 5.472 164.2 2.8 18.7 2009 12 10 05 39.43 +13 51.8 4.514 5.482 168.2 2.1 18.7 2009 12 15 05 36.81 +13 49.4 4.519 5.492 170.4 1.7 18.7 2009 12 20 05 34.18 +13 47.8 4.532 5.502 169.5 1.9 18.7 2009 12 25 05 31.60 +13 47.1 4.552 5.512 166.1 2.5 18.7 2009 12 30 05 29.12 +13 47.3 4.581 5.522 161.6 3.2 18.7 2010 01 04 05 26.78 +13 48.4 4.616 5.532 156.6 4.0 18.8 2010 01 09 05 24.61 +13 50.3 4.659 5.543 151.4 4.9 18.8 2010 01 14 05 22.65 +13 53.1 4.709 5.553 146.1 5.7 18.8 2010 01 19 05 20.93 +13 56.7 4.765 5.563 140.8 6.4 18.8 2010 01 24 05 19.49 +14 01.1 4.827 5.573 135.6 7.1 18.9 2010 01 29 05 18.33 +14 06.2 4.895 5.583 130.3 7.7 18.9 2010 02 03 05 17.47 +14 12.0 4.967 5.593 125.2 8.3 19.0 2010 02 08 05 16.92 +14 18.4 5.044 5.604 120.1 8.8 19.0 2010 02 13 05 16.68 +14 25.2 5.124 5.614 115.1 9.2 19.0 2010 02 18 05 16.76 +14 32.6 5.207 5.624 110.1 9.5 19.1 2010 02 23 05 17.15 +14 40.3 5.292 5.634 105.2 9.8 19.1 2010 02 28 05 17.85 +14 48.3 5.380 5.644 100.5 9.9 19.2 2010 03 05 05 18.84 +14 56.4 5.468 5.654 95.7 10.1 19.2 2010 03 10 05 20.12 +15 04.7 5.557 5.664 91.1 10.1 19.3 2010 03 15 05 21.67 +15 13.0 5.647 5.675 86.5 10.1 19.3 2010 03 20 05 23.48 +15 21.3 5.736 5.685 82.1 10.0 19.3 2010 03 25 05 25.54 +15 29.5 5.824 5.695 77.6 9.8 19.4 2010 03 30 05 27.83 +15 37.4 5.911 5.705 73.3 9.7 19.4 2010 04 04 05 30.34 +15 45.1 5.996 5.715 69.0 9.4 19.5 2010 04 09 05 33.05 +15 52.5 6.079 5.725 64.8 9.1 19.5 2010 04 14 05 35.95 +15 59.5 6.160 5.735 60.6 8.8 19.5 2010 04 19 05 39.03 +16 06.1 6.238 5.745 56.5 8.4 19.6 2010 04 24 05 42.26 +16 12.1 6.312 5.755 52.5 8.0 19.6 2010 04 29 05 45.64 +16 17.7 6.383 5.765 48.5 7.5 19.6 2010 05 04 05 49.14 +16 22.6 6.451 5.776 44.5 7.0 19.7 2010 05 09 05 52.77 +16 27.0 6.514 5.786 40.6 6.5 19.7 2010 05 14 05 56.50 +16 30.7 6.574 5.796 36.8 6.0 19.7 2010 05 19 06 00.32 +16 33.8 6.629 5.806 32.9 5.4 19.7 2010 05 24 06 04.22 +16 36.1 6.679 5.816 29.2 4.9 19.8 2010 05 29 06 08.18 +16 37.8 6.725 5.826 25.4 4.3 19.8 2010 06 03 06 12.20 +16 38.7 6.765 5.836 21.8 3.7 19.8 2010 06 08 06 16.27 +16 38.9 6.801 5.846 18.2 3.1 19.8 2010 06 13 06 20.37 +16 38.4 6.832 5.856 14.7 2.5 19.8 2010 06 18 06 24.49 +16 37.2 6.858 5.866 11.5 2.0 19.9 2010 06 23 06 28.62 +16 35.2 6.878 5.876 8.7 1.5 19.9 2010 06 28 06 32.74 +16 32.5 6.894 5.886 6.9 1.2 19.9 2010 07 03 06 36.86 +16 29.1 6.904 5.896 6.9 1.2 19.9 2010 07 08 06 40.96 +16 25.0 6.908 5.906 8.8 1.5 19.9 2010 07 13 06 45.02 +16 20.2 6.908 5.916 11.6 2.0 19.9 2010 07 18 06 49.04 +16 14.7 6.902 5.925 14.9 2.5 19.9 2010 07 23 06 53.01 +16 08.7 6.891 5.935 18.3 3.1 19.9 2010 07 28 06 56.91 +16 02.0 6.875 5.945 21.9 3.7 19.9 2010 08 02 07 00.74 +15 54.8 6.854 5.955 25.6 4.2 19.9 2010 08 07 07 04.49 +15 47.1 6.828 5.965 29.4 4.8 19.9 2010 08 12 07 08.14 +15 38.8 6.797 5.975 33.2 5.3 19.9 2010 08 17 07 11.68 +15 30.2 6.762 5.985 37.0 5.8 19.9 2010 08 22 07 15.10 +15 21.1 6.722 5.995 40.9 6.3 19.9 2010 08 27 07 18.40 +15 11.8 6.678 6.004 44.9 6.8 19.9 2010 09 01 07 21.55 +15 02.1 6.630 6.014 48.9 7.3 19.9 2010 09 06 07 24.55 +14 52.3 6.578 6.024 52.9 7.7 19.9 2010 09 11 07 27.39 +14 42.3 6.522 6.034 57.0 8.0 19.9 2010 09 16 07 30.05 +14 32.2 6.463 6.043 61.2 8.4 19.9 2010 09 21 07 32.51 +14 22.1 6.402 6.053 65.4 8.7 19.9 2010 09 26 07 34.78 +14 12.1 6.337 6.063 69.7 8.9 19.8 2010 10 01 07 36.84 +14 02.2 6.271 6.073 74.1 9.1 19.8 2010 10 06 07 38.67 +13 52.6 6.203 6.082 78.5 9.3 19.8 2010 10 11 07 40.26 +13 43.3 6.133 6.092 83.0 9.4 19.8 2010 10 16 07 41.61 +13 34.3 6.063 6.102 87.5 9.4 19.8 2010 10 21 07 42.70 +13 25.9 5.992 6.111 92.1 9.4 19.7 2010 10 26 07 43.53 +13 18.0 5.922 6.121 96.9 9.3 19.7 2010 10 31 07 44.08 +13 10.7 5.852 6.130 101.6 9.1 19.7 2010 11 05 07 44.35 +13 04.1 5.784 6.140 106.5 8.9 19.7 2010 11 10 07 44.34 +12 58.3 5.718 6.150 111.4 8.6 19.7 2010 11 15 07 44.05 +12 53.4 5.654 6.159 116.5 8.3 19.7 2010 11 20 07 43.48 +12 49.4 5.594 6.169 121.6 7.8 19.6 2010 11 25 07 42.63 +12 46.3 5.537 6.178 126.7 7.4 19.6 2010 11 30 07 41.52 +12 44.3 5.485 6.188 131.9 6.8 19.6This 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.
