C/2009 F4 (McNaught)
Orbital Elements
The following orbital elements are taken from MPC 66204:C/2009 F4 (McNaught) Epoch 2011 Dec. 25.0 TT = JDT 2455920.5 T 2011 Dec. 31.7037 TT MPC q 5.454262 (2000.0) P Q z -0.000413 Peri. 260.3828 +0.0473195 +0.6101015 +/-0.000101 Node 53.5856 +0.1629498 +0.7764743 e 1.002251 Incl. 79.3604 -0.9854990 +0.1576826 From 225 observations 2009 Mar. 19-June 3, mean residual 0".5.Elements are also available for the current standard epoch:
C/2009 F4 (McNaught) Epoch 2010 Jan. 4.0 TT = JDT 2455200.5 T 2011 Dec. 31.3158 TT MPC q 5.455070 (2000.0) P Q z -0.000675 Peri. 260.3517 +0.0472335 +0.6104279 +/-0.000101 Node 53.5674 +0.1622676 +0.7763425 e 1.003682 Incl. 79.3367 -0.9856157 +0.1570672An 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 15 10.74 -29 52.6 8.761 7.861 23.7 2.9 16.7 2009 10 31 15 13.05 -30 13.2 8.762 7.837 20.2 2.5 16.7 2009 11 05 15 15.43 -30 34.4 8.756 7.813 17.0 2.1 16.6 2009 11 10 15 17.87 -30 56.2 8.745 7.789 14.4 1.8 16.6 2009 11 15 15 20.35 -31 18.7 8.727 7.765 12.9 1.6 16.6 2009 11 20 15 22.87 -31 41.7 8.702 7.742 12.8 1.6 16.6 2009 11 25 15 25.40 -32 05.3 8.672 7.718 14.1 1.8 16.6 2009 11 30 15 27.94 -32 29.5 8.634 7.694 16.5 2.1 16.5 2009 12 05 15 30.47 -32 54.3 8.591 7.670 19.7 2.5 16.5 2009 12 10 15 32.99 -33 19.6 8.542 7.647 23.2 2.9 16.5 2009 12 15 15 35.46 -33 45.4 8.487 7.623 27.0 3.4 16.5 2009 12 20 15 37.89 -34 11.9 8.426 7.600 31.1 3.8 16.4 2009 12 25 15 40.25 -34 38.8 8.359 7.576 35.2 4.3 16.4 2009 12 30 15 42.53 -35 06.3 8.287 7.553 39.4 4.7 16.4 2010 01 04 15 44.71 -35 34.3 8.210 7.529 43.6 5.2 16.3 2010 01 09 15 46.78 -36 02.9 8.129 7.506 48.0 5.6 16.3 2010 01 14 15 48.72 -36 32.0 8.043 7.483 52.3 6.0 16.3 2010 01 19 15 50.51 -37 01.7 7.954 7.460 56.8 6.3 16.2 2010 01 24 15 52.12 -37 31.8 7.860 7.437 61.2 6.7 16.2 2010 01 29 15 53.55 -38 02.5 7.764 7.414 65.7 7.0 16.2 2010 02 03 15 54.78 -38 33.6 7.666 7.391 70.2 7.2 16.1 2010 02 08 15 55.77 -39 05.2 7.566 7.368 74.7 7.4 16.1 2010 02 13 15 56.52 -39 37.2 7.464 7.345 79.3 7.6 16.0 2010 02 18 15 57.01 -40 09.5 7.361 7.322 83.9 7.7 16.0 2010 02 23 15 57.20 -40 42.2 7.258 7.299 88.5 7.8 15.9 2010 02 28 15 57.09 -41 14.9 7.155 7.277 93.1 7.8 15.9 2010 03 05 15 56.66 -41 47.8 7.053 7.254 97.8 7.8 15.8 2010 03 10 15 55.90 -42 20.7 6.953 7.232 102.4 7.7 15.8 2010 03 15 15 54.77 -42 53.3 6.855 7.209 107.0 7.6 15.8 2010 03 20 15 53.28 -43 25.6 6.760 7.187 111.6 7.4 15.7 2010 03 25 15 51.42 -43 57.3 6.668 7.165 116.2 7.2 15.7 2010 03 30 15 49.18 -44 28.3 6.580 7.142 120.7 6.9 15.6 2010 04 04 15 46.56 -44 58.2 6.497 7.120 125.2 6.6 15.6 2010 04 09 15 43.57 -45 26.9 6.419 7.098 129.5 6.2 15.5 2010 04 14 15 40.23 -45 54.1 6.346 7.076 133.7 5.9 15.5 2010 04 19 15 36.54 -46 19.6 6.279 7.054 137.7 5.5 15.5 2010 04 24 15 32.55 -46 43.1 6.219 7.032 141.4 5.1 15.4 2010 04 29 15 28.29 -47 04.4 6.165 7.011 144.6 4.8 15.4 2010 05 04 15 23.79 -47 23.3 6.119 6.989 147.3 4.5 15.4 2010 05 09 15 19.11 -47 39.7 6.080 6.968 149.4 4.2 15.4 2010 05 14 15 14.29 -47 53.4 6.048 6.946 150.6 4.1 15.3 2010 05 19 15 09.41 -48 04.5 6.024 6.925 150.8 4.1 15.3 2010 05 24 15 04.52 -48 13.0 6.007 6.903 150.1 4.2 15.3 2010 05 29 14 59.69 -48 18.9 5.997 6.882 148.5 4.4 15.3 2010 06 03 14 54.96 -48 22.4 5.995 6.861 146.2 4.7 15.3 2010 06 08 14 50.40 -48 23.7 5.999 6.840 143.3 5.1 15.2 2010 06 13 14 46.05 -48 23.1 6.011 6.819 139.9 5.5 15.2 2010 06 18 14 41.97 -48 20.8 6.028 6.798 136.3 5.9 15.2 2010 06 23 14 38.20 -48 17.1 6.051 6.778 132.4 6.4 15.2 2010 06 28 14 34.76 -48 12.4 6.079 6.757 128.3 6.8 15.2 2010 07 03 14 31.67 -48 07.0 6.113 6.736 124.2 7.2 15.2 2010 07 08 14 28.96 -48 01.3 6.150 6.716 119.9 7.5 15.2 2010 07 13 14 26.64 -47 55.4 6.192 6.696 115.7 7.9 15.2 2010 07 18 14 24.70 -47 49.8 6.236 6.675 111.5 8.1 15.2 2010 07 23 14 23.16 -47 44.7 6.284 6.655 107.2 8.4 15.2 2010 07 28 14 22.01 -47 40.4 6.333 6.635 103.0 8.6 15.2 2010 08 02 14 21.23 -47 37.0 6.384 6.615 98.8 8.7 15.2 2010 08 07 14 20.83 -47 34.7 6.435 6.596 94.7 8.8 15.2 2010 08 12 14 20.78 -47 33.7 6.488 6.576 90.6 8.9 15.2 2010 08 17 14 21.09 -47 34.2 6.540 6.556 86.5 8.9 15.2 2010 08 22 14 21.72 -47 36.2 6.591 6.537 82.5 8.8 15.2 2010 08 27 14 22.67 -47 39.9 6.641 6.518 78.6 8.7 15.3 2010 09 01 14 23.92 -47 45.2 6.690 6.498 74.8 8.6 15.3 2010 09 06 14 25.46 -47 52.2 6.737 6.479 71.0 8.5 15.3 2010 09 11 14 27.28 -48 01.0 6.782 6.460 67.3 8.3 15.3 2010 09 16 14 29.35 -48 11.7 6.824 6.441 63.7 8.0 15.3 2010 09 21 14 31.67 -48 24.1 6.863 6.423 60.2 7.8 15.3 2010 09 26 14 34.22 -48 38.3 6.898 6.404 56.8 7.5 15.3 2010 10 01 14 36.98 -48 54.3 6.930 6.386 53.5 7.2 15.3 2010 10 06 14 39.95 -49 12.0 6.958 6.367 50.4 7.0 15.3 2010 10 11 14 43.12 -49 31.6 6.981 6.349 47.5 6.7 15.2 2010 10 16 14 46.47 -49 52.9 7.001 6.331 44.7 6.4 15.2 2010 10 21 14 49.98 -50 15.9 7.015 6.313 42.2 6.1 15.2 2010 10 26 14 53.65 -50 40.6 7.025 6.295 39.9 5.8 15.2 2010 10 31 14 57.46 -51 07.0 7.031 6.277 37.9 5.6 15.2 2010 11 05 15 01.41 -51 35.1 7.031 6.260 36.3 5.4 15.2 2010 11 10 15 05.49 -52 04.8 7.027 6.243 35.1 5.2 15.2 2010 11 15 15 09.68 -52 36.2 7.017 6.225 34.3 5.1 15.2 2010 11 20 15 13.96 -53 09.2 7.003 6.208 34.0 5.1 15.2 2010 11 25 15 18.34 -53 43.7 6.984 6.191 34.1 5.1 15.1 2010 11 30 15 22.79 -54 19.9 6.960 6.174 34.7 5.2 15.1This 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.
