MPC
CBAT
ICQ
80P/Peters-Hartley
Epoch 2006 Sept. 22.0 TT = JDT 2454000.5
T 2006 Sept. 25.8202 TT MPC
q 1.633650 (2000.0) P Q
n 0.1211409 Peri. 338.6093 -0.4748552 +0.7305796
a 4.045220 Node 259.8816 -0.7177163 -0.6441434
e 0.596153 Incl. 29.8963 -0.5093093 +0.2265670
P 8.14
From 36 observations 1982-1998, mean residual 1".0. Nongravitational
parameters A1 = +0.68, A2 = -0.0768.
Elements are also available for the current standard epoch:
80P/Peters-Hartley Epoch 2007 Apr. 10.0 TT = JDT 2454200.5 T 2006 Sept. 25.7903 TT MPC q 1.633571 (2000.0) P Q n 0.1212128 Peri. 338.5934 -0.4750502 +0.7304414 a 4.043622 Node 259.8818 -0.7175380 -0.6443440 e 0.596013 Incl. 29.8974 -0.5093786 +0.2264424 P 8.13An 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 22 59.87 +23 49.9 2.914 2.808 74.0 20.3 20.3 24.1 2007 06 04 23 03.14 +25 00.7 2.889 2.840 77.1 20.4 20.4 24.1 2007 06 09 23 05.97 +26 09.9 2.863 2.871 80.3 20.4 20.4 24.1 2007 06 14 23 08.34 +27 17.4 2.836 2.902 83.5 20.3 20.5 24.1 2007 06 19 23 10.21 +28 22.7 2.810 2.934 86.8 20.2 20.6 24.1 2007 06 24 23 11.57 +29 25.6 2.783 2.965 90.1 20.0 20.7 24.1 2007 06 29 23 12.40 +30 25.8 2.756 2.996 93.6 19.8 20.7 24.1 2007 07 04 23 12.67 +31 22.9 2.730 3.027 97.0 19.5 20.8 24.1 2007 07 09 23 12.38 +32 16.5 2.704 3.058 100.5 19.1 20.9 24.1 2007 07 14 23 11.51 +33 06.1 2.680 3.088 104.1 18.6 20.9 24.0 2007 07 19 23 10.06 +33 51.0 2.657 3.119 107.6 18.1 21.0 24.0 2007 07 24 23 08.05 +34 30.9 2.636 3.149 111.2 17.5 21.1 24.0 2007 07 29 23 05.49 +35 05.2 2.618 3.180 114.8 16.9 21.1 24.0 2007 08 03 23 02.42 +35 33.4 2.602 3.210 118.3 16.2 21.2 24.0 2007 08 08 22 58.90 +35 55.1 2.590 3.240 121.7 15.4 21.3 24.0 2007 08 13 22 54.97 +36 09.6 2.581 3.270 125.1 14.7 21.3 24.0 2007 08 18 22 50.73 +36 16.9 2.576 3.300 128.2 14.0 21.4 23.9 2007 08 23 22 46.28 +36 16.6 2.576 3.329 131.1 13.2 21.5 23.9 2007 08 28 22 41.71 +36 08.8 2.580 3.359 133.7 12.6 21.6 23.9 2007 09 02 22 37.13 +35 53.8 2.590 3.388 135.9 12.0 21.7 23.9 2007 09 07 22 32.65 +35 31.8 2.605 3.417 137.6 11.5 21.8 24.0 2007 09 12 22 28.36 +35 03.2 2.625 3.446 138.8 11.1 21.8 24.0 2007 09 17 22 24.36 +34 28.9 2.651 3.475 139.3 10.9 21.9 24.0 2007 09 22 22 20.73 +33 49.7 2.683 3.504 139.1 10.8 22.0 24.0 2007 09 27 22 17.55 +33 06.4 2.720 3.533 138.3 10.9 22.1 24.1 2007 10 02 22 14.84 +32 20.0 2.763 3.561 136.9 11.1 22.2 24.2 2007 10 07 22 12.65 +31 31.5 2.812 3.589 135.0 11.4 22.3 24.2 2007 10 12 22 11.00 +30 41.8 2.866 3.617 132.6 11.7 22.5 24.3 2007 10 17 22 09.89 +29 51.7 2.926 3.645 129.8 12.1 22.6 24.4 2007 10 22 22 09.32 +29 02.1 2.990 3.673 126.8 12.5 22.7 24.4 2007 10 27 22 09.28 +28 13.8 3.059 3.701 123.5 12.9 22.8 24.5 2007 11 01 22 09.75 +27 27.2 3.132 3.728 120.0 13.3 22.9 24.6 2007 11 06 22 10.69 +26 42.9 3.208 3.756 116.4 13.7 23.0 24.7 2007 11 11 22 12.09 +26 01.2 3.288 3.783 112.7 14.0 23.1 24.8 2007 11 16 22 13.92 +25 22.6 3.372 3.810 109.0 14.2 23.3 24.8 2007 11 21 22 16.14 +24 47.3 3.457 3.837 105.2 14.4 23.4 24.9 2007 11 26 22 18.73 +24 15.3 3.545 3.863 101.4 14.5 23.5 25.0 2007 12 01 22 21.64 +23 46.9 3.635 3.890 97.6 14.6 23.6 25.1 2007 12 06 22 24.87 +23 21.9 3.726 3.916 93.8 14.5 23.7 25.1 2007 12 11 22 28.37 +23 00.5 3.817 3.942 90.0 14.5 23.8 25.2 2007 12 16 22 32.12 +22 42.6 3.910 3.968 86.2 14.3 23.9 25.3 2007 12 21 22 36.10 +22 28.2 4.002 3.994 82.5 14.1 24.0 25.3 2007 12 26 22 40.28 +22 17.1 4.094 4.020 78.8 13.9 24.1 25.4 2007 12 31 22 44.64 +22 09.2 4.185 4.046 75.1 13.6 24.2 25.4 2008 01 05 22 49.17 +22 04.4 4.275 4.071 71.5 13.2 24.3 25.5 2008 01 10 22 53.83 +22 02.5 4.364 4.096 67.9 12.8 24.4 25.5 2008 01 15 22 58.63 +22 03.5 4.452 4.121 64.3 12.4 24.5 25.6 2008 01 20 23 03.53 +22 07.2 4.537 4.146 60.8 12.0 24.6 25.6 2008 01 25 23 08.52 +22 13.4 4.620 4.171 57.3 11.5 24.7 25.6 2008 01 30 23 13.59 +22 22.0 4.700 4.196 53.9 10.9 24.8 25.7 2008 02 04 23 18.72 +22 32.8 4.777 4.220 50.5 10.4 24.9 25.7 2008 02 09 23 23.92 +22 45.7 4.851 4.244 47.3 9.8 25.0 25.7 2008 02 14 23 29.15 +23 00.6 4.922 4.268 44.1 9.3 25.1 25.7 2008 02 19 23 34.41 +23 17.3 4.990 4.292 41.0 8.7 25.1 25.7 2008 02 24 23 39.70 +23 35.7 5.053 4.316 38.0 8.1 25.2 25.8 2008 02 29 23 44.99 +23 55.6 5.113 4.340 35.1 7.5 25.3 25.8 2008 03 05 23 50.29 +24 16.9 5.168 4.363 32.4 7.0 25.4 25.8 2008 03 10 23 55.59 +24 39.6 5.220 4.387 29.9 6.5 25.4 25.8 2008 03 15 00 00.87 +25 03.5 5.267 4.410 27.6 6.0 25.5 25.8 2008 03 20 00 06.13 +25 28.4 5.309 4.433 25.7 5.6 25.6 25.8 2008 03 25 00 11.35 +25 54.3 5.347 4.456 24.1 5.2 25.6 25.8 2008 03 30 00 16.53 +26 21.1 5.381 4.478 23.0 5.0 25.7 25.8 2008 04 04 00 21.67 +26 48.7 5.409 4.501 22.4 4.9 25.7 25.8 2008 04 09 00 26.76 +27 17.0 5.433 4.523 22.4 4.8 25.8 25.9 2008 04 14 00 31.78 +27 45.9 5.453 4.546 22.9 4.9 25.8 25.9 2008 04 19 00 36.72 +28 15.3 5.467 4.568 24.0 5.1 25.9 25.9 2008 04 24 00 41.59 +28 45.1 5.477 4.590 25.5 5.4 25.9 25.9 2008 04 29 00 46.37 +29 15.4 5.482 4.611 27.4 5.8 26.0 26.0 2008 05 04 00 51.04 +29 45.9 5.483 4.633 29.6 6.2 26.0 2008 05 09 00 55.61 +30 16.7 5.479 4.655 32.1 6.6 26.0 2008 05 14 01 00.06 +30 47.6 5.471 4.676 34.8 7.1 26.1 2008 05 19 01 04.37 +31 18.6 5.458 4.697 37.6 7.6 26.1 2008 05 24 01 08.55 +31 49.6 5.441 4.718 40.6 8.0 26.1 2008 05 29 01 12.57 +32 20.6 5.420 4.739 43.7 8.5 26.1 2008 06 03 01 16.42 +32 51.5 5.395 4.760 46.9 9.0 26.2 2008 06 08 01 20.09 +33 22.3 5.366 4.780 50.2 9.4 26.2 2008 06 13 01 23.56 +33 52.8 5.333 4.801 53.6 9.8 26.2 2008 06 18 01 26.82 +34 23.0 5.298 4.821 57.1 10.2 26.2 2008 06 23 01 29.85 +34 52.9 5.259 4.841 60.6 10.5 26.2 2008 06 28 01 32.64 +35 22.2 5.217 4.861 64.2 10.9 26.2 2008 07 03 01 35.17 +35 51.0 5.173 4.881 67.9 11.1 26.2This 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.