P/2009 L2 (Yang-Gao)
Orbital Elements
The following orbital elements are taken from MPC 66704:P/2009 L2 (Yang-Gao) Epoch 2009 May 9.0 TT = JDT 2454960.5 T 2009 May 21.7478 TT MPC q 1.296113 (2000.0) P Q n 0.1559011 Peri. 346.9481 -0.3939283 +0.8775187 a 3.419032 Node 259.3051 -0.8163221 -0.4707528 e 0.620912 Incl. 16.1585 -0.4224200 +0.0913935 P 6.32 From 913 observations 2009 June 15-Aug. 3, mean residual 0".5.Elements are also available for the current standard epoch:
P/2009 L2 (Yang-Gao) Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2009 May 21.7651 TT MPC q 1.295796 (2000.0) P Q n 0.1558540 Peri. 346.9670 -0.3940764 +0.8774686 a 3.419721 Node 259.2779 -0.8163079 -0.4708563 e 0.621081 Incl. 16.1568 -0.4223094 +0.0913407 P 6.32An 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 20 24.92 +00 14.6 1.795 2.138 95.8 27.6 19.6 2009 10 31 20 32.85 +00 14.5 1.884 2.175 93.0 27.1 19.7 2009 11 05 20 40.83 +00 17.3 1.974 2.212 90.2 26.6 19.9 2009 11 10 20 48.84 +00 22.8 2.065 2.248 87.3 26.1 20.1 2009 11 15 20 56.87 +00 31.1 2.157 2.285 84.5 25.5 20.3 2009 11 20 21 04.91 +00 42.0 2.250 2.321 81.6 24.9 20.4 2009 11 25 21 12.96 +00 55.5 2.343 2.358 78.7 24.2 20.6 2009 11 30 21 20.99 +01 11.4 2.436 2.394 75.8 23.5 20.7 2009 12 05 21 29.00 +01 29.7 2.529 2.430 72.9 22.8 20.9 2009 12 10 21 36.99 +01 50.1 2.622 2.466 70.0 22.0 21.0 2009 12 15 21 44.95 +02 12.6 2.714 2.501 67.1 21.3 21.2 2009 12 20 21 52.88 +02 37.2 2.806 2.537 64.2 20.4 21.3 2009 12 25 22 00.76 +03 03.5 2.897 2.572 61.2 19.6 21.4 2009 12 30 22 08.60 +03 31.6 2.987 2.607 58.3 18.7 21.5 2010 01 04 22 16.39 +04 01.2 3.075 2.642 55.3 17.8 21.7 2010 01 09 22 24.12 +04 32.3 3.162 2.677 52.3 16.9 21.8 2010 01 14 22 31.81 +05 04.8 3.247 2.711 49.4 16.0 21.9 2010 01 19 22 39.43 +05 38.5 3.330 2.746 46.4 15.0 22.0 2010 01 24 22 47.00 +06 13.2 3.411 2.780 43.4 14.1 22.1 2010 01 29 22 54.50 +06 49.0 3.489 2.813 40.5 13.1 22.2 2010 02 03 23 01.94 +07 25.6 3.564 2.847 37.5 12.2 22.3 2010 02 08 23 09.31 +08 03.0 3.637 2.880 34.6 11.2 22.4 2010 02 13 23 16.61 +08 41.0 3.707 2.913 31.7 10.3 22.5 2010 02 18 23 23.84 +09 19.7 3.773 2.946 28.8 9.3 22.6 2010 02 23 23 31.01 +09 58.7 3.836 2.979 26.0 8.4 22.7 2010 02 28 23 38.09 +10 38.1 3.895 3.011 23.3 7.5 22.7 2010 03 05 23 45.10 +11 17.8 3.951 3.043 20.6 6.6 22.8 2010 03 10 23 52.04 +11 57.7 4.003 3.075 18.1 5.8 22.9 2010 03 15 23 58.89 +12 37.7 4.052 3.106 15.8 5.0 23.0 2010 03 20 00 05.66 +13 17.7 4.096 3.138 13.8 4.3 23.0 2010 03 25 00 12.35 +13 57.6 4.136 3.169 12.4 3.9 23.1 2010 03 30 00 18.95 +14 37.4 4.172 3.200 11.6 3.6 23.2 2010 04 04 00 25.45 +15 17.0 4.203 3.230 11.7 3.6 23.2 2010 04 09 00 31.86 +15 56.3 4.231 3.261 12.6 3.8 23.3 2010 04 14 00 38.17 +16 35.4 4.254 3.291 14.2 4.3 23.3 2010 04 19 00 44.37 +17 14.0 4.272 3.321 16.3 4.9 23.4 2010 04 24 00 50.47 +17 52.2 4.287 3.350 18.8 5.5 23.4 2010 04 29 00 56.44 +18 29.9 4.296 3.379 21.5 6.3 23.5 2010 05 04 01 02.30 +19 07.1 4.302 3.409 24.3 7.0 23.5 2010 05 09 01 08.02 +19 43.7 4.303 3.437 27.3 7.7 23.5 2010 05 14 01 13.61 +20 19.7 4.300 3.466 30.3 8.5 23.6 2010 05 19 01 19.05 +20 55.0 4.293 3.494 33.5 9.2 23.6 2010 05 24 01 24.33 +21 29.6 4.282 3.523 36.7 9.9 23.6 2010 05 29 01 29.44 +22 03.4 4.266 3.550 40.0 10.6 23.7 2010 06 03 01 34.37 +22 36.4 4.247 3.578 43.4 11.2 23.7 2010 06 08 01 39.11 +23 08.7 4.224 3.606 46.8 11.8 23.7 2010 06 13 01 43.65 +23 40.0 4.197 3.633 50.2 12.4 23.7 2010 06 18 01 47.97 +24 10.4 4.167 3.660 53.8 12.9 23.7 2010 06 23 01 52.05 +24 39.9 4.134 3.686 57.4 13.4 23.7 2010 06 28 01 55.87 +25 08.4 4.097 3.713 61.0 13.9 23.8 2010 07 03 01 59.43 +25 35.8 4.058 3.739 64.8 14.2 23.8 2010 07 08 02 02.69 +26 02.1 4.016 3.765 68.6 14.6 23.8 2010 07 13 02 05.65 +26 27.2 3.971 3.791 72.5 14.8 23.8 2010 07 18 02 08.27 +26 51.1 3.925 3.816 76.4 15.0 23.8 2010 07 23 02 10.54 +27 13.5 3.877 3.842 80.5 15.1 23.8 2010 07 28 02 12.44 +27 34.6 3.828 3.867 84.6 15.2 23.8 2010 08 02 02 13.94 +27 54.0 3.778 3.892 88.8 15.1 23.8 2010 08 07 02 15.04 +28 11.8 3.727 3.916 93.2 15.0 23.8 2010 08 12 02 15.69 +28 27.7 3.677 3.941 97.6 14.8 23.8 2010 08 17 02 15.90 +28 41.5 3.627 3.965 102.1 14.5 23.8 2010 08 22 02 15.65 +28 53.1 3.578 3.989 106.7 14.1 23.8 2010 08 27 02 14.94 +29 02.3 3.531 4.013 111.4 13.6 23.8 2010 09 01 02 13.75 +29 08.8 3.487 4.036 116.3 13.0 23.8 2010 09 06 02 12.10 +29 12.5 3.445 4.059 121.2 12.3 23.8 2010 09 11 02 10.00 +29 13.2 3.406 4.082 126.2 11.5 23.8 2010 09 16 02 07.46 +29 10.5 3.372 4.105 131.3 10.6 23.8 2010 09 21 02 04.53 +29 04.5 3.343 4.128 136.4 9.7 23.8 2010 09 26 02 01.26 +28 55.0 3.319 4.150 141.5 8.7 23.8 2010 10 01 01 57.68 +28 41.9 3.300 4.173 146.6 7.6 23.8 2010 10 06 01 53.87 +28 25.3 3.289 4.195 151.5 6.5 23.8 2010 10 11 01 49.89 +28 05.3 3.284 4.216 156.2 5.5 23.8 2010 10 16 01 45.82 +27 42.1 3.286 4.238 160.2 4.6 23.9 2010 10 21 01 41.74 +27 16.1 3.296 4.259 163.3 3.9 23.9 2010 10 26 01 37.73 +26 47.7 3.314 4.281 164.5 3.6 23.9 2010 10 31 01 33.86 +26 17.4 3.340 4.302 163.6 3.7 24.0 2010 11 05 01 30.20 +25 45.7 3.373 4.322 160.9 4.3 24.0 2010 11 10 01 26.81 +25 13.2 3.414 4.343 156.9 5.1 24.0 2010 11 15 01 23.74 +24 40.4 3.463 4.363 152.3 6.0 24.1 2010 11 20 01 21.03 +24 08.0 3.518 4.383 147.4 7.0 24.1 2010 11 25 01 18.72 +23 36.4 3.581 4.403 142.3 7.9 24.2 2010 11 30 01 16.81 +23 06.1 3.649 4.423 137.1 8.7 24.3This 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.
