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 2009 June 18.0 TT = JDT 2455000.5 T 2007 Aug. 24.3041 TT MPC q 4.353050 (2000.0) P Q n 0.0665238 Peri. 175.2147 +0.9984797 +0.0549802 a 6.032324 Node 181.6491 -0.0540201 +0.9617975 e 0.278379 Incl. 7.8745 -0.0109635 +0.2681842 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 06 08 04 35.87 +15 55.4 6.111 5.114 9.6 1.9 19.0 2009 06 13 04 40.63 +16 03.0 6.109 5.123 12.7 2.5 19.0 2009 06 18 04 45.36 +16 09.8 6.102 5.133 16.0 3.1 19.0 2009 06 23 04 50.05 +16 15.6 6.090 5.143 19.4 3.8 19.0 2009 06 28 04 54.68 +16 20.6 6.074 5.152 22.9 4.4 19.0 2009 07 03 04 59.24 +16 24.6 6.053 5.162 26.4 5.0 19.0 2009 07 08 05 03.71 +16 27.7 6.027 5.172 30.0 5.6 19.0 2009 07 13 05 08.10 +16 29.9 5.997 5.182 33.7 6.2 19.0 2009 07 18 05 12.38 +16 31.2 5.963 5.191 37.3 6.8 19.0 2009 07 23 05 16.54 +16 31.6 5.924 5.201 41.1 7.4 19.0 2009 07 28 05 20.58 +16 31.2 5.882 5.211 44.8 7.9 19.0 2009 08 02 05 24.48 +16 30.0 5.836 5.221 48.6 8.4 19.0 2009 08 07 05 28.22 +16 27.9 5.786 5.231 52.5 8.8 19.0 2009 08 12 05 31.79 +16 25.1 5.733 5.241 56.4 9.3 19.0 2009 08 17 05 35.18 +16 21.5 5.677 5.251 60.3 9.6 19.0 2009 08 22 05 38.38 +16 17.2 5.619 5.261 64.4 10.0 19.0 2009 08 27 05 41.36 +16 12.3 5.558 5.270 68.4 10.3 18.9 2009 09 01 05 44.12 +16 06.8 5.494 5.280 72.6 10.5 18.9 2009 09 06 05 46.64 +16 00.7 5.429 5.290 76.8 10.7 18.9 2009 09 11 05 48.91 +15 54.1 5.363 5.300 81.0 10.8 18.9 2009 09 16 05 50.91 +15 47.1 5.296 5.310 85.4 10.9 18.9 2009 09 21 05 52.63 +15 39.8 5.228 5.320 89.8 10.9 18.9 2009 09 26 05 54.06 +15 32.1 5.160 5.330 94.3 10.8 18.8 2009 10 01 05 55.18 +15 24.2 5.093 5.340 98.9 10.7 18.8 2009 10 06 05 55.99 +15 16.2 5.027 5.350 103.6 10.5 18.8 2009 10 11 05 56.48 +15 08.0 4.962 5.361 108.3 10.2 18.8 2009 10 16 05 56.64 +14 59.9 4.899 5.371 113.2 9.8 18.8 2009 10 21 05 56.48 +14 51.8 4.839 5.381 118.1 9.4 18.7 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 19.9This 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.
