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<div>Hi Jon,</div><div><br></div><div>Thanks for this. I've just submitted an observation run request to the Faulkes Telescope and have used their MPC lookup using the designation 2018 V1. I've asked for one image a day for 6 days. Do you think the elements will be robust enough to last 6 days, or should I resubmit each day in case the elements get refined?</div><div><br></div><div>Thanks</div><div>Helen</div><div><br></div>
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On Friday, 9 November 2018, 13:57:57 GMT, Shanklin, Jonathan D. <jdsh@bas.ac.uk> wrote:
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<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">The orbit is still rather fluid, but the ephemeris from Nakano on the CBET is probably no longer valid.</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">This ephemeris uses the latest PCCP orbit:</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Ephemeris for DM001 DM001</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Omega= 80.0525 OMEGA=125.3290 i=149.1079 q= 0.429752 a= 51.051556</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">e=0.991582 P= 364.765 T= 2018 December 2.9708 Equinox= 2000</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Magnitudes calculated from m=10.9+5.0*Log(d)+15.0*Log(r)+0.000*Beta</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Station: Cambridge</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Latitude: 52.213 Longitude: 0.000 Magnetic variation: 0.0</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Observing constraints: Sun below -13. deg Object above***** deg</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">November 2018 Positions for 00:00 ET, Times in UT</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> Elong Moon Comet</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Day R.A. B1950 Dec R.A. J2000 Dec Mag D R Trans Observable Sun Moon Phase Tail pA d RA dDec</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> 9/10 12 25.1 -2.02 12 27.6 -2.18 8.8 1.08 0.71 9.12 4.42 to 5.47 40 69 5 19 294 0 0</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">10/11 12 30.4 -1.54 12 32.9 -2.10 8.6 1.04 0.69 9.14 4.38 to 5.48 40 80 11 22 295 32 3</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">11/12 12 36.1 -1.46 12 38.7 -2.03 8.4 1.00 0.68 9.15 4.35 to 5.50 40 91 18 26 295 35 3</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">12/13 12 42.4 -1.38 12 44.9 -1.55 8.1 0.97 0.66 9.18 4.32 to 5.51 39 102 26 30 296 39 3</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">13/14 12 49.2 -1.31 12 51.8 -1.47 7.8 0.93 0.64 9.21 4.31 to 5.53 39 112 35 35 297 42 3</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">14/15 12 56.7 -1.23 12 59.3 -1.39 7.6 0.90 0.62 9.24 4.30 to 5.54 38 122 44 41 298 46 3</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">It will almost certainly change further as more observations come in and the observational arc is extended.</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Regards,</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Jon Shanklin</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">Visual Co-ordinator, BAA Comet Section</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;">http://www.ast.cam.ac.uk/~jds/</span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
<p class="ydpa878fed4yiv9399587404MsoNormal"><span style="font-size:11.0pt;font-family:sans-serif;color:#1F497D;"> </span></p>
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<p class="ydpa878fed4yiv9399587404MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:sans-serif;">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:sans-serif;"> Comets-disc <comets-disc-bounces@lists.britastro.org>
<b>On Behalf Of </b>denis buczynski<br>
<b>Sent:</b> 09 November 2018 13:40<br>
<b>To:</b> BAA Comets Discussion List <comets-disc@lists.britastro.org><br>
<b>Subject:</b> [BAA Comets] DM001 EPHEMERIS</span></p>
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<pre>On CBET 4569 <br> Nakano provides the following preliminary ephemeris for the comet:</pre>
<pre> </pre>
<pre> 2018 TT R.A. (2000) Decl. Delta r</pre>
<pre> Nov. 5 12 06.22 -02 26.5 1.549 1.013</pre>
<pre> 6 12 10.91 -02 21.2 1.549 1.012</pre>
<pre> 7 12 15.60 -02 15.7 1.550 1.011</pre>
<pre> 8 12 20.29 -02 10.2 1.550 1.011</pre>
<pre> 9 12 24.97 -02 04.6 1.551 1.012</pre>
<pre> 10 12 29.64 -01 59.0 1.552 1.012</pre>
<pre> 11 12 34.30 -01 53.3 1.553 1.013</pre>
<pre> 12 12 38.95 -01 47.6 1.555 1.014</pre>
<pre> 13 12 43.59 -01 41.8 1.556 1.015</pre>
<pre> 14 12 48.22 -01 36.0 1.558 1.017</pre>
<pre> 15 12 52.84 -01 30.2 1.560 1.019</pre>
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