MPEC 2018-B30 : 2018 AO12
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M.P.E.C. 2018-B30 Issued 2018 Jan. 17, 23:50 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 2018 AO12 Observations: K18A12O* C2018 01 15.33258 07 47 00.628+23 43 16.93 22.6 wUEB030F51 K18A12O C2018 01 15.34509 07 47 02.161+23 43 15.84 22.4 wUEB030F51 K18A12O C2018 01 15.37007 07 47 05.185+23 43 13.38 22.9 wUEB030F51 K18A12O _C2018 01 16.34142907 49 19.630+23 40 38.57 21.9 GUEB030568 K18A12O _C2018 01 16.34260407 49 19.776+23 40 38.45 22.0 GUEB030568 K18A12O _C2018 01 16.34378107 49 19.918+23 40 38.32 22.0 GUEB030568 K18A12O KC2018 01 17.34627 07 51 35.72 +23 37 38.6 oEB030291 K18A12O KC2018 01 17.36356 07 51 37.78 +23 37 34.6 oEB030291 K18A12O KC2018 01 17.38088 07 51 39.83 +23 37 31.1 oEB030291 Observer details: 291 LPL/Spacewatch II. Observer M. T. Read. 1.8-m f/2.7 reflector + CCD. 568 Mauna Kea. Observers R. J. Wainscoat, L. Wells. Measurers M. Micheli, R. J. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD. F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling, M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk. 1.8-m Ritchey-Chretien + CCD. Orbital elements: 2018 AO12 Earth MOID = 0.1908 AU Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC M 319.73373 (2000.0) P Q n 0.30322974 Peri. 37.12317 -0.41116383 -0.91149192 a 2.1942605 Node 77.15727 +0.83354435 -0.38094510 e 0.4654993 Incl. 0.66170 +0.36898255 -0.15512352 P 3.25 H 25.4 G 0.15 U 8 Residuals in seconds of arc 180115 F51 0.2+ 0.0 180116 568 0.3+ 0.2- 180117 291 0.7+ 0.2+ 180115 F51 0.3+ 0.1- 180116 568 0.3+ 0.2- 180117 291 0.5+ 0.3- 180115 F51 0.4+ 0.1- 180116 568 0.3+ 0.2- 180117 291 0.1- 0.0 Ephemeris: 2018 AO12 a,e,i = 2.19, 0.47, 1 q = 1.1728 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2017 12 18 06 45 04.2 +23 44 21 0.2323 1.2105 165.7 11.6 23.4 ... 2018 01 02 07 16 32.9 +23 58 17 0.1987 1.1810 173.6 5.3 22.7 ... 2018 01 10 07 34 42.1 +23 53 34 0.1908 1.1740 176.9 2.6 22.4 ... 2018 01 16 07 48 30.6 +23 41 34 0.1893 1.1729 177.3 2.3 22.4 2018 01 17 07 50 48.5 +23 38 47 0.1894 1.1730 177.1 2.5 22.4 2018 01 18 07 53 06.1 +23 35 45 0.1897 1.1733 176.8 2.7 22.4 ... 2018 01 24 08 06 43.4 +23 12 39 0.1934 1.1770 174.4 4.7 22.6 ... 2018 02 01 08 24 14.6 +22 29 18 0.2044 1.1874 170.7 7.7 22.9 ... 2018 02 16 08 53 46.5 +20 38 46 0.2436 1.2228 162.8 13.8 23.6 A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-B30


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