MPC
CBAT
ICQ
P/1998 U4 (Spahr) Epoch 1999 Mar. 3.0 TT = JDT 2451240.5 T 1999 Feb. 26.5265 TT MPC q 3.843368 (2000.0) P Q n 0.0749681 Peri. 251.7522 +0.2887326 -0.9572817 a 5.570382 Node 181.7168 +0.9485568 +0.2838051 e 0.310035 Incl. 31.5191 -0.1298977 -0.0553762 P 13.1 From 130 observations 1998 Oct. 27-2001 Apr. 15, mean residual 0".7.Elements are also available for the current standard epoch:
P/1998 U4 (Spahr) Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 T 2012 Apr. 29.0477 TT MPC q 3.860593 (2000.0) P Q n 0.0747013 Peri. 251.8496 +0.2873850 -0.9576904 a 5.583638 Node 181.6965 +0.9490275 +0.2825296 e 0.308588 Incl. 31.4835 -0.1294473 -0.0548287 P 13.2An 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 18 57.77 +12 25.3 6.298 6.985 129.4 6.4 20.4 2007 06 04 18 56.18 +12 36.6 6.253 6.980 132.7 6.1 20.4 2007 06 09 18 54.42 +12 46.0 6.213 6.975 135.6 5.8 20.4 2007 06 14 18 52.53 +12 53.2 6.178 6.970 138.3 5.6 20.4 2007 06 19 18 50.53 +12 58.1 6.150 6.964 140.5 5.3 20.4 2007 06 24 18 48.43 +13 00.7 6.127 6.959 142.3 5.1 20.4 2007 06 29 18 46.29 +13 00.8 6.110 6.953 143.5 5.0 20.4 2007 07 04 18 44.11 +12 58.5 6.099 6.948 144.1 4.9 20.3 2007 07 09 18 41.94 +12 53.7 6.094 6.942 144.0 4.9 20.3 2007 07 14 18 39.80 +12 46.6 6.096 6.937 143.2 5.0 20.3 2007 07 19 18 37.72 +12 37.2 6.104 6.931 141.8 5.2 20.3 2007 07 24 18 35.73 +12 25.5 6.117 6.925 139.9 5.4 20.3 2007 07 29 18 33.87 +12 11.8 6.137 6.920 137.5 5.7 20.3 2007 08 03 18 32.14 +11 56.2 6.162 6.914 134.8 6.0 20.3 2007 08 08 18 30.58 +11 38.9 6.192 6.908 131.7 6.3 20.4 2007 08 13 18 29.20 +11 20.0 6.228 6.902 128.4 6.6 20.4 2007 08 18 18 28.03 +10 59.8 6.268 6.896 124.9 6.9 20.4 2007 08 23 18 27.07 +10 38.6 6.312 6.891 121.2 7.2 20.4 2007 08 28 18 26.34 +10 16.4 6.361 6.885 117.4 7.5 20.4 2007 09 02 18 25.85 +09 53.6 6.412 6.879 113.6 7.7 20.4 2007 09 07 18 25.59 +09 30.4 6.467 6.873 109.7 7.9 20.4 2007 09 12 18 25.58 +09 06.9 6.525 6.866 105.7 8.1 20.4 2007 09 17 18 25.81 +08 43.3 6.585 6.860 101.8 8.2 20.5 2007 09 22 18 26.29 +08 19.9 6.646 6.854 97.8 8.3 20.5 2007 09 27 18 27.01 +07 56.8 6.708 6.848 93.8 8.4 20.5 2007 10 02 18 27.97 +07 34.2 6.772 6.842 89.8 8.4 20.5 2007 10 07 18 29.15 +07 12.2 6.835 6.835 85.8 8.4 20.5 2007 10 12 18 30.55 +06 51.0 6.898 6.829 81.9 8.3 20.5 2007 10 17 18 32.17 +06 30.7 6.961 6.823 77.9 8.2 20.6 2007 10 22 18 33.99 +06 11.3 7.023 6.816 74.0 8.1 20.6 2007 10 27 18 36.00 +05 53.1 7.083 6.810 70.2 7.9 20.6 2007 11 01 18 38.19 +05 36.0 7.141 6.803 66.3 7.7 20.6 2007 11 06 18 40.56 +05 20.2 7.196 6.797 62.6 7.4 20.6 2007 11 11 18 43.09 +05 05.7 7.250 6.790 58.8 7.2 20.6 2007 11 16 18 45.76 +04 52.6 7.300 6.784 55.2 6.9 20.6 2007 11 21 18 48.58 +04 41.0 7.346 6.777 51.6 6.6 20.6 2007 11 26 18 51.51 +04 30.8 7.390 6.770 48.1 6.2 20.6 2007 12 01 18 54.56 +04 22.0 7.429 6.763 44.7 5.9 20.7 2007 12 06 18 57.70 +04 14.9 7.464 6.757 41.4 5.5 20.7 2007 12 11 19 00.94 +04 09.2 7.494 6.750 38.3 5.2 20.7 2007 12 16 19 04.24 +04 05.1 7.520 6.743 35.5 4.9 20.7 2007 12 21 19 07.61 +04 02.6 7.541 6.736 32.8 4.5 20.7 2007 12 26 19 11.03 +04 01.6 7.558 6.729 30.5 4.3 20.7 2007 12 31 19 14.49 +04 02.1 7.569 6.722 28.6 4.0 20.7 2008 01 05 19 17.98 +04 04.1 7.575 6.715 27.1 3.8 20.7 2008 01 10 19 21.48 +04 07.7 7.576 6.708 26.2 3.7 20.7 2008 01 15 19 24.98 +04 12.7 7.571 6.701 25.9 3.7 20.7 2008 01 20 19 28.46 +04 19.2 7.562 6.694 26.2 3.7 20.6 2008 01 25 19 31.93 +04 27.1 7.547 6.686 27.2 3.9 20.6 2008 01 30 19 35.36 +04 36.3 7.527 6.679 28.6 4.1 20.6 2008 02 04 19 38.75 +04 46.8 7.502 6.672 30.6 4.3 20.6 2008 02 09 19 42.08 +04 58.7 7.471 6.664 32.9 4.6 20.6 2008 02 14 19 45.34 +05 11.7 7.436 6.657 35.5 4.9 20.6 2008 02 19 19 48.52 +05 25.9 7.396 6.650 38.4 5.3 20.6 2008 02 24 19 51.60 +05 41.1 7.351 6.642 41.5 5.7 20.6 2008 02 29 19 54.59 +05 57.3 7.302 6.635 44.7 6.0 20.5 2008 03 05 19 57.46 +06 14.5 7.249 6.627 48.0 6.4 20.5 2008 03 10 20 00.20 +06 32.5 7.192 6.620 51.5 6.7 20.5 2008 03 15 20 02.80 +06 51.3 7.131 6.612 55.0 7.1 20.5 2008 03 20 20 05.26 +07 10.8 7.067 6.604 58.7 7.4 20.4 2008 03 25 20 07.56 +07 30.8 7.000 6.597 62.3 7.7 20.4 2008 03 30 20 09.68 +07 51.3 6.930 6.589 66.1 8.0 20.4 2008 04 04 20 11.63 +08 12.1 6.858 6.581 69.9 8.2 20.4 2008 04 09 20 13.39 +08 33.2 6.784 6.573 73.7 8.4 20.3 2008 04 14 20 14.95 +08 54.3 6.708 6.565 77.6 8.6 20.3 2008 04 19 20 16.29 +09 15.4 6.630 6.558 81.5 8.7 20.3 2008 04 24 20 17.43 +09 36.4 6.552 6.550 85.4 8.8 20.2 2008 04 29 20 18.33 +09 57.0 6.474 6.542 89.4 8.9 20.2 2008 05 04 20 19.01 +10 17.1 6.396 6.534 93.4 8.9 20.2 2008 05 09 20 19.44 +10 36.6 6.318 6.526 97.4 8.8 20.1 2008 05 14 20 19.64 +10 55.2 6.241 6.517 101.5 8.7 20.1 2008 05 19 20 19.59 +11 12.9 6.166 6.509 105.5 8.6 20.1 2008 05 24 20 19.30 +11 29.3 6.092 6.501 109.5 8.4 20.1 2008 05 29 20 18.76 +11 44.4 6.021 6.493 113.5 8.2 20.0 2008 06 03 20 17.99 +11 58.0 5.953 6.485 117.5 8.0 20.0 2008 06 08 20 16.99 +12 09.8 5.888 6.476 121.5 7.7 20.0 2008 06 13 20 15.77 +12 19.7 5.827 6.468 125.4 7.4 19.9 2008 06 18 20 14.34 +12 27.5 5.770 6.460 129.2 7.0 19.9 2008 06 23 20 12.73 +12 33.1 5.717 6.451 132.8 6.6 19.9 2008 06 28 20 10.94 +12 36.3 5.670 6.443 136.2 6.3 19.9 2008 07 03 20 09.00 +12 37.1 5.628 6.434 139.4 5.9 19.8This 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.