MPEC 2017-W193: 2017 WJ16
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M.P.E.C. 2017-W193 Issued 2017 Nov. 27, 20:47 UT The Minor Planet Electronic Circulars contain information on unusual minor planets and routine data on comets. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. Prepared using the Tamkin Foundation Computer Network MPC@CFA.HARVARD.EDU URL https://www.minorplanetcenter.net/ ISSN 1523-6714 2017 WJ16 Observations: K17W16J* C2017 11 25.06293 23 04 34.52 -02 24 45.0 20.0 GUEW193G96 K17W16J C2017 11 25.06823 23 04 34.20 -02 24 02.2 20.1 GUEW193G96 K17W16J C2017 11 25.07353 23 04 33.88 -02 23 19.6 20.7 GUEW193G96 K17W16J C2017 11 25.07883 23 04 33.55 -02 22 37.0 19.2 GUEW193G96 K17W16J C2017 11 25.17573 23 04 27.83 -02 09 41.5 19.6 GUEW193G96 K17W16J C2017 11 25.17613 23 04 27.81 -02 09 38.4 19.9 GUEW193G96 K17W16J C2017 11 25.17654 23 04 27.78 -02 09 34.8 20.1 GUEW193G96 K17W16J C2017 11 25.17694 23 04 27.76 -02 09 31.2 20.1 GUEW193G96 K17W16J KC2017 11 25.75539 23 04 45.72 -00 56 29.6 UEW193J95 K17W16J KC2017 11 25.77337 23 04 45.01 -00 54 17.2 UEW193J95 K17W16J KC2017 11 25.78358 23 04 44.59 -00 53 01.9 19.8 GUEW193J95 K17W16J |C2017 11 26.02934 23 04 44.84 -00 18 48.6 19.8 GUEW193807 K17W16J |C2017 11 26.03358 23 04 44.61 -00 18 18.1 19.8 GUEW193807 K17W16J |C2017 11 26.03788 23 04 44.36 -00 17 47.8 19.8 GUEW193807 K17W16J C2017 11 26.13116 23 04 47.36 -00 10 21.9 19.8 GUEW193G96 K17W16J C2017 11 26.13157 23 04 47.34 -00 10 19.1 20.0 GUEW193G96 K17W16J C2017 11 26.13198 23 04 47.32 -00 10 16.3 20.1 GUEW193G96 K17W16J C2017 11 26.13239 23 04 47.31 -00 10 12.8 19.9 GUEW193G96 K17W16J C2017 11 26.14010 23 04 46.86 -00 09 18.6 20.6 GUEW193V06 K17W16J C2017 11 26.14113 23 04 46.83 -00 09 11.5 19.6 GUEW193V06 K17W16J C2017 11 26.14206023 04 46.17 -00 09 09.7 19.7 GUEW193H01 K17W16J C2017 11 26.14216 23 04 46.76 -00 09 04.2 20.4 GUEW193V06 K17W16J C2017 11 26.14555023 04 46.01 -00 08 45.1 20.1 GUEW193H01 K17W16J C2017 11 26.15998923 04 45.32 -00 07 03.3 19.4 GUEW193H01 K17W16J C2017 11 26.16389 23 04 45.69 -00 06 31.0 19.8 GUEW193I52 K17W16J C2017 11 26.16431 23 04 45.66 -00 06 28.3 18.8 GUEW193I52 K17W16J C2017 11 26.16472 23 04 45.65 -00 06 25.2 18.8 GUEW193I52 K17W16J C2017 11 26.16514 23 04 45.63 -00 06 22.4 19.7 GUEW193I52 K17W16J C2017 11 26.17087723 04 44.84 -00 05 46.6 19.7 GUEW193H01 K17W16J C2017 11 27.06005 23 05 08.87 +01 33 14.2 20.2 GUEW193V06 K17W16J C2017 11 27.06062 23 05 08.85 +01 33 18.3 19.7 GUEW193V06 K17W16J C2017 11 27.06120 23 05 08.86 +01 33 21.7 19.4 GUEW193V06 K17W16J C2017 11 27.06177 23 05 08.79 +01 33 25.2 19.8 GUEW193V06 Observer details: 807 Cerro Tololo. Observers T. Linder, R. Holmes. 0.61-m f/6.5 astrograph + CCD. G96 Mt. Lemmon Survey. Observers D. C. Fuls, G. J. Leonard. Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly. 1.5-m reflector + 10K CCD. H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan. Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD. I52 Steward Observatory, Mt. Lemmon Station. Observer A. R. Gibbs. Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD. J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain + CCD. V06 Catalina Sky Survey-Kuiper. Observer D. C. Fuls. Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly. 1.55-m reflector + CCD. Orbital elements: 2017 WJ16 Earth MOID = 0.0084 AU Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC M 62.89243 (2000.0) P Q n 1.32203192 Peri. 186.76432 -0.40318662 +0.91111493 a 0.8221949 Node 59.48950 -0.83488599 -0.32797263 e 0.2140783 Incl. 5.69544 -0.37470779 -0.24960676 P 0.75 H 24.4 G 0.15 U 7 Residuals in seconds of arc 171125 G96 0.5- 0.1- 171126 807 0.2- 0.3- 171126 H01 0.1- 0.2- 171125 G96 0.3- 0.1+ 171126 807 0.2- 0.1- 171126 H01 0.2- 0.1- 171125 G96 0.2- 0.0 171126 807 0.5- 0.5- 171126 I52 0.1- 0.0 171125 G96 0.2- 0.0 171126 G96 0.2- 0.0 171126 I52 0.3- 0.2- 171125 G96 0.0 0.2- 171126 G96 0.2- 0.1- 171126 I52 0.1- 0.0 171125 G96 0.0 0.3- 171126 G96 0.2- 0.2- 171126 I52 0.1- 0.2- 171125 G96 0.2- 0.0 171126 G96 0.0 0.4+ 171126 H01 0.1- 0.0 171125 G96 0.2- 0.4+ 171126 V06 0.4- 0.0 171127 V06 0.2- 0.0 171125 J95 0.7+ 0.5+ 171126 V06 0.1- 0.1- 171127 V06 0.0 0.4+ 171125 J95 0.5+ 0.0 171126 H01 0.2- 0.1- 171127 V06 0.6+ 0.2+ 171125 J95 0.1+ 0.0 171126 V06 0.3- 0.1- 171127 V06 0.1- 0.0 Ephemeris: 2017 WJ16 a,e,i = 0.82, 0.21, 6 Q = 0.9982 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2017 10 28 11 11 25.8 -47 47 48 0.05329 0.9607 50.6 126.9 23.4 ... 2017 11 12 23 00 37.8 -76 33 22 0.02041 0.9862 79.0 99.8 19.5 ... 2017 11 20 23 03 21.4 -18 40 52 0.02750 0.9941 101.8 76.6 19.3 ... 2017 11 26 23 04 48.2 -00 24 08 0.04175 0.9975 103.4 74.2 20.1 2017 11 27 23 05 05.9 +01 28 29 0.04434 0.9978 103.2 74.4 20.2 2017 11 28 23 05 24.5 +03 08 52 0.04696 0.9981 102.8 74.5 20.4 ... 2017 12 04 23 07 26.4 +10 17 39 0.06299 0.9984 99.9 76.5 21.1 ... 2017 12 12 23 10 26.3 +15 43 33 0.08424 0.9953 94.8 80.3 21.8 ... 2017 12 27 23 16 11.3 +21 13 32 0.1207 0.9787 84.2 88.7 22.9 A. U. Tomatic (C) Copyright 2017 MPC M.P.E.C. 2017-W193


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