1999 HF1 1999 HF1 Orbital Elements The following orbital elements are taken from MPEC 2005-W20: 1999 HF1 Epoch 2006 Mar. 6.0 TT = JDT 2453800.5 MPC M 208.27583 (2000.0) P Q n 1.32978127 Peri. 253.34122 +0.61387173 -0.76941107 a 0.8189975 Node 155.93698 +0.78121541 +0.62424760 e 0.4625243 Incl. 25.65700 -0.11341951 +0.13535710 P 0.74 H 14.5 G 0.15 U 3 From 1574 observations at 7 oppositions, 1999-2005, mean residual 0".44. 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. 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. Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2005 12 16 15 09.72 -07 36.5 1.609 1.030 38.0 36.0 17.1 2005 12 21 15 25.59 -07 36.0 1.614 1.058 39.4 36.2 17.1 2005 12 26 15 41.27 -07 32.4 1.615 1.083 40.9 36.4 17.2 2005 12 31 15 56.80 -07 25.6 1.613 1.106 42.3 36.8 17.2 2006 01 05 16 12.20 -07 15.2 1.607 1.126 43.7 37.2 17.3 2006 01 10 16 27.48 -07 01.2 1.599 1.143 45.2 37.6 17.3 2006 01 15 16 42.68 -06 43.3 1.587 1.158 46.6 38.1 17.4 2006 01 20 16 57.81 -06 21.7 1.573 1.171 48.0 38.6 17.4 2006 01 25 17 12.91 -05 56.1 1.557 1.181 49.3 39.2 17.4 2006 01 30 17 28.00 -05 26.4 1.538 1.189 50.6 39.8 17.4 2006 02 04 17 43.08 -04 52.7 1.517 1.194 51.9 40.5 17.4 2006 02 09 17 58.19 -04 15.0 1.494 1.197 53.1 41.2 17.4 2006 02 14 18 13.37 -03 33.2 1.469 1.198 54.2 41.9 17.4 2006 02 19 18 28.64 -02 47.6 1.442 1.196 55.2 42.7 17.3 2006 02 24 18 44.06 -01 58.0 1.415 1.192 56.1 43.6 17.3 2006 03 01 18 59.66 -01 04.6 1.386 1.185 57.0 44.5 17.3 2006 03 06 19 15.48 -00 07.6 1.356 1.176 57.7 45.5 17.2 2006 03 11 19 31.58 +00 52.7 1.325 1.165 58.2 46.5 17.2 2006 03 16 19 48.05 +01 56.3 1.293 1.151 58.7 47.6 17.2 2006 03 21 20 04.95 +03 02.8 1.262 1.135 58.9 48.8 17.1 2006 03 26 20 22.39 +04 11.9 1.230 1.116 59.0 50.0 17.0 2006 03 31 20 40.45 +05 23.2 1.198 1.095 58.9 51.4 17.0 2006 04 05 20 59.26 +06 36.0 1.167 1.071 58.6 52.9 16.9 2006 04 10 21 18.94 +07 49.7 1.137 1.044 58.0 54.5 16.9 2006 04 15 21 39.65 +09 03.5 1.108 1.015 57.2 56.2 16.8 2006 04 20 22 01.54 +10 16.3 1.081 0.984 56.1 58.0 16.7 2006 04 25 22 24.77 +11 26.9 1.056 0.949 54.7 59.9 16.7 2006 04 30 22 49.49 +12 33.8 1.035 0.912 53.1 61.9 16.6 2006 05 05 23 15.82 +13 35.0 1.018 0.873 51.0 63.9 16.5 2006 05 10 23 43.87 +14 28.6 1.005 0.831 48.7 65.9 16.4 2006 05 15 00 13.69 +15 12.7 0.999 0.786 46.1 67.8 16.4 2006 05 20 00 45.23 +15 45.5 1.000 0.740 43.1 69.3 16.3 2006 05 25 01 18.38 +16 06.0 1.009 0.691 40.0 70.3 16.2 2006 05 30 01 52.95 +16 14.1 1.028 0.642 36.6 70.4 16.1 2006 06 04 02 28.71 +16 11.1 1.058 0.593 33.1 69.4 15.9 Back to Observable Unusual Minor Planets Index MPC