C/2017 S3 Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 T 2018 Aug. 15.9227 TT MPC 106348 q 0.208265 (2000.0) P Q z -0.000240 Peri. 255.9107 +0.2168226 -0.9640868 +/-0.000147 Node 171.0655 +0.2082684 +0.1991810 e 1.000050 Incl. 99.0362 -0.9537359 -0.1756804 From 30 observations 2017 Aug. 17-Sept. 27, mean residual 0".4. C/2017 S3 (PANSTARRS) Elements MPC 106348 Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag. 2017 09 04 17 54.45 +77 36.8 5.191 5.222 86.2 11.1 20.8 2017 09 09 17 50.56 +76 43.2 5.123 5.170 87.1 11.2 20.7 2017 09 14 17 48.37 +75 47.1 5.055 5.118 87.9 11.3 20.6 2017 09 19 17 47.67 +74 49.0 4.988 5.065 88.6 11.4 20.5 2017 09 24 17 48.25 +73 49.1 4.923 5.012 89.3 11.5 20.5 2017 09 29 17 49.94 +72 48.0 4.858 4.958 89.9 11.7 20.4 2017 10 04 17 52.59 +71 45.9 4.795 4.905 90.4 11.8 20.3 2017 10 09 17 56.07 +70 43.2 4.733 4.851 90.8 11.9 20.2 2017 10 14 18 00.28 +69 40.0 4.672 4.797 91.1 12.0 20.2 2017 10 19 18 05.13 +68 36.6 4.614 4.742 91.3 12.1 20.1 2017 10 24 18 10.54 +67 33.3 4.557 4.687 91.4 12.2 20.0 2017 10 29 18 16.46 +66 30.4 4.501 4.632 91.3 12.4 19.9 2017 11 03 18 22.81 +65 28.0 4.448 4.577 91.2 12.5 19.8 2017 11 08 18 29.54 +64 26.5 4.396 4.521 90.8 12.7 19.8 2017 11 13 18 36.63 +63 25.9 4.347 4.465 90.4 12.8 19.7 2017 11 18 18 44.02 +62 26.6 4.299 4.409 89.8 13.0 19.6 2017 11 23 18 51.70 +61 28.8 4.253 4.352 89.1 13.1 19.5 2017 11 28 18 59.61 +60 32.7 4.209 4.295 88.3 13.3 19.5 2017 12 03 19 07.75 +59 38.5 4.167 4.237 87.3 13.4 19.4 2017 12 08 19 16.07 +58 46.4 4.126 4.179 86.3 13.6 19.3 2017 12 13 19 24.57 +57 56.6 4.087 4.121 85.1 13.8 19.2 2017 12 18 19 33.22 +57 09.2 4.049 4.063 83.8 13.9 19.1 2017 12 23 19 42.01 +56 24.5 4.012 4.004 82.5 14.1 19.0 2017 12 28 19 50.91 +55 42.6 3.977 3.944 81.0 14.3 19.0 2018 01 02 19 59.91 +55 03.5 3.942 3.884 79.5 14.4 18.9 2018 01 07 20 09.00 +54 27.5 3.907 3.824 77.9 14.6 18.8 2018 01 12 20 18.17 +53 54.5 3.874 3.763 76.3 14.7 18.7 2018 01 17 20 27.42 +53 24.7 3.840 3.702 74.6 14.8 18.6 2018 01 22 20 36.72 +52 58.2 3.806 3.640 72.9 15.0 18.5 2018 01 27 20 46.07 +52 34.9 3.772 3.578 71.2 15.1 18.4 2018 02 01 20 55.46 +52 14.9 3.738 3.516 69.5 15.2 18.3 2018 02 06 21 04.90 +51 58.1 3.702 3.452 67.8 15.3 18.2 2018 02 11 21 14.37 +51 44.6 3.666 3.389 66.1 15.4 18.1 2018 02 16 21 23.88 +51 34.3 3.628 3.324 64.5 15.6 18.0 2018 02 21 21 33.43 +51 27.2 3.589 3.259 62.9 15.7 17.9 2018 02 26 21 43.01 +51 23.1 3.548 3.194 61.3 15.8 17.8 2018 03 03 21 52.63 +51 22.1 3.506 3.128 59.9 15.9 17.7 2018 03 08 22 02.29 +51 24.0 3.461 3.061 58.5 16.0 17.6 2018 03 13 22 12.00 +51 28.7 3.414 2.994 57.1 16.2 17.4 2018 03 18 22 21.78 +51 36.2 3.365 2.925 55.9 16.4 17.3 2018 03 23 22 31.61 +51 46.3 3.312 2.856 54.8 16.6 17.2 H = 10.0, 2.5n = 10.0