MPC
CBAT
ICQ
C/2006 WD4 (Lemmon) Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 T 2007 Apr. 28.3984 TT MPC q 0.591238 (2000.0) P Q z +0.001720 Peri. 292.6917 +0.3334377 -0.8815334 +/-0.000002 Node 226.7906 -0.6046892 -0.4719741 e 0.998983 Incl. 152.7042 -0.7233052 -0.0118053 From 80 observations 2006 Nov. 20-2007 May 29, mean residual 0".6.An 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.
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! 2007 05 30 08 55.83 +21 32.8 0.432 0.898 62.3 92.5 14.2 2007 06 04 09 45.21 +21 33.5 0.610 0.974 68.6 75.8 15.3 2007 06 09 10 11.50 +21 12.6 0.797 1.052 69.8 64.9 16.2 2007 06 14 10 27.86 +20 51.2 0.984 1.131 68.9 56.9 17.0 2007 06 19 10 39.33 +20 31.5 1.168 1.210 66.8 50.5 17.7 2007 06 24 10 48.13 +20 13.3 1.349 1.289 64.2 45.3 18.3 2007 06 29 10 55.34 +19 56.0 1.525 1.367 61.3 40.7 18.8 2007 07 04 11 01.57 +19 39.3 1.695 1.445 58.2 36.7 19.2 2007 07 09 11 07.15 +19 23.1 1.860 1.523 54.9 33.1 19.7 2007 07 14 11 12.30 +19 07.1 2.019 1.599 51.6 29.9 20.1 2007 07 19 11 17.15 +18 51.5 2.172 1.675 48.2 26.9 20.4 2007 07 24 11 21.79 +18 36.2 2.318 1.750 44.8 24.1 20.8 2007 07 29 11 26.26 +18 21.4 2.459 1.825 41.4 21.6 21.1 2007 08 03 11 30.61 +18 07.1 2.592 1.898 38.0 19.2 21.4 2007 08 08 11 34.86 +17 53.3 2.719 1.971 34.6 17.0 21.6 2007 08 13 11 39.03 +17 40.2 2.839 2.043 31.3 14.9 21.9 2007 08 18 11 43.13 +17 27.8 2.952 2.114 28.1 13.0 22.1 2007 08 23 11 47.17 +17 16.2 3.058 2.185 25.1 11.3 22.3 2007 08 28 11 51.14 +17 05.6 3.157 2.255 22.2 9.8 22.5 2007 09 02 11 55.05 +16 56.1 3.249 2.324 19.7 8.4 22.7 2007 09 07 11 58.89 +16 47.8 3.333 2.392 17.7 7.3 22.9 2007 09 12 12 02.67 +16 40.8 3.410 2.460 16.3 6.6 23.1 2007 09 17 12 06.37 +16 35.2 3.479 2.527 15.8 6.2 23.2 2007 09 22 12 09.99 +16 31.2 3.542 2.594 16.4 6.3 23.4 2007 09 27 12 13.52 +16 28.9 3.596 2.660 17.8 6.6 23.5 2007 10 02 12 16.96 +16 28.4 3.644 2.725 20.1 7.2 23.7 2007 10 07 12 20.28 +16 30.0 3.684 2.790 22.8 8.0 23.8 2007 10 12 12 23.49 +16 33.8 3.717 2.854 26.0 8.8 23.9 2007 10 17 12 26.56 +16 39.9 3.744 2.918 29.5 9.7 24.0 2007 10 22 12 29.49 +16 48.5 3.763 2.981 33.2 10.5 24.1 2007 10 27 12 32.24 +16 59.9 3.776 3.044 37.1 11.4 24.2 2007 11 01 12 34.82 +17 14.2 3.783 3.106 41.2 12.2 24.3 2007 11 06 12 37.20 +17 31.5 3.784 3.168 45.4 12.9 24.4 2007 11 11 12 39.36 +17 52.1 3.780 3.229 49.7 13.5 24.5 2007 11 16 12 41.27 +18 16.2 3.770 3.290 54.2 14.1 24.6 2007 11 21 12 42.91 +18 44.0 3.756 3.351 58.7 14.6 24.6 2007 11 26 12 44.25 +19 15.6 3.737 3.411 63.3 15.0 24.7 2007 12 01 12 45.27 +19 51.1 3.715 3.470 68.1 15.3 24.8 2007 12 06 12 45.94 +20 30.7 3.690 3.529 72.9 15.5 24.8 2007 12 11 12 46.22 +21 14.5 3.663 3.588 77.9 15.6 24.9 2007 12 16 12 46.08 +22 02.5 3.634 3.646 82.9 15.5 24.9 2007 12 21 12 45.48 +22 54.7 3.605 3.704 88.1 15.4 25.0 2007 12 26 12 44.40 +23 50.9 3.575 3.762 93.3 15.1 25.0 2007 12 31 12 42.80 +24 50.9 3.547 3.819 98.6 14.7 25.1 2008 01 05 12 40.65 +25 54.5 3.521 3.876 103.9 14.3 25.1 2008 01 10 12 37.91 +27 01.1 3.498 3.933 109.2 13.7 25.2 2008 01 15 12 34.57 +28 10.2 3.478 3.989 114.6 13.0 25.2 2008 01 20 12 30.62 +29 21.0 3.464 4.045 119.9 12.2 25.3 2008 01 25 12 26.05 +30 32.6 3.455 4.101 125.1 11.3 25.3 2008 01 30 12 20.88 +31 44.1 3.453 4.156 130.1 10.4 25.4 2008 02 04 12 15.12 +32 54.4 3.458 4.211 134.8 9.6 25.4 2008 02 09 12 08.82 +34 02.4 3.471 4.266 139.0 8.7 25.5 2008 02 14 12 02.04 +35 07.0 3.493 4.320 142.7 8.0 25.6 2008 02 19 11 54.86 +36 07.0 3.524 4.374 145.4 7.4 25.6 2008 02 24 11 47.39 +37 01.6 3.564 4.428 147.2 7.0 25.7 2008 02 29 11 39.74 +37 50.2 3.613 4.482 147.6 6.8 25.8 2008 03 05 11 32.01 +38 32.1 3.672 4.535 146.9 6.9 25.9 2008 03 10 11 24.33 +39 07.1 3.739 4.588 145.0 7.1 26.0 2008 03 15 11 16.83 +39 35.2 3.815 4.641 142.1 7.6 26.1 2008 03 20 11 09.61 +39 56.4 3.899 4.693 138.7 8.1 26.2 2008 03 25 11 02.76 +40 11.1 3.991 4.745 134.7 8.6 26.3 2008 03 30 10 56.37 +40 19.9 4.089 4.797 130.4 9.1 26.4 2008 04 04 10 50.48 +40 23.2 4.194 4.849 126.0 9.6 26.5 2008 04 09 10 45.15 +40 21.7 4.304 4.901 121.4 10.1 26.6 2008 04 14 10 40.39 +40 15.9 4.419 4.952 116.7 10.4 26.7 2008 04 19 10 36.22 +40 06.5 4.538 5.003 112.1 10.7 26.8 2008 04 24 10 32.62 +39 54.1 4.660 5.054 107.5 10.9 26.9 2008 04 29 10 29.59 +39 39.2 4.785 5.104 102.9 11.1 27.0 2008 05 04 10 27.09 +39 22.2 4.911 5.155 98.3 11.2 27.1 2008 05 09 10 25.11 +39 03.5 5.039 5.205 93.8 11.2 27.2 2008 05 14 10 23.61 +38 43.6 5.168 5.255 89.4 11.1 27.3 2008 05 19 10 22.56 +38 22.7 5.296 5.305 85.0 11.0 27.4 2008 05 24 10 21.93 +38 01.2 5.424 5.354 80.7 10.8 27.5 2008 05 29 10 21.68 +37 39.2 5.550 5.404 76.5 10.5 27.5 2008 06 03 10 21.78 +37 16.9 5.675 5.453 72.3 10.2 27.6 2008 06 08 10 22.20 +36 54.5 5.798 5.502 68.2 9.9 27.7 2008 06 13 10 22.91 +36 32.2 5.918 5.550 64.1 9.5 27.8 2008 06 18 10 23.88 +36 10.1 6.034 5.599 60.2 9.1 27.9 2008 06 23 10 25.09 +35 48.2 6.148 5.647 56.3 8.6 28.0 2008 06 28 10 26.51 +35 26.7 6.258 5.696 52.5 8.1 28.0 2008 07 03 10 28.11 +35 05.7 6.363 5.744 48.7 7.6 28.1This 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.