M.P.E.C. 2013-A35 Issued 2013 Jan. 7, 19:06 UT The Minor Planet Electronic Circulars contain information on unusual minor planets and routine data on comets. They are published on behalf of Commission 20 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 http://www.minorplanetcenter.net/ ISSN 1523-6714 2013 AO20 Observations: K13A20O* C2013 01 06.27331 06 17 10.03 -05 06 19.1 19.1 cEA035704 K13A20O C2013 01 06.28687 06 17 09.05 -05 09 29.8 18.5 cEA035704 K13A20O C2013 01 06.30047 06 17 08.16 -05 12 40.5 18.2 cEA035704 K13A20O C2013 01 06.31391 06 17 07.22 -05 15 48.8 17.9 cEA035704 K13A20O C2013 01 06.32752 06 17 06.39 -05 18 59.0 17.9 cEA035704 K13A20O KC2013 01 07.28017206 16 33.51 -08 51 14.6 18.1 VrEA035H21 K13A20O KC2013 01 07.28293006 16 33.36 -08 51 49.6 18.1 VrEA035H21 K13A20O KC2013 01 07.28564306 16 33.22 -08 52 24.1 18.1 VrEA035H21 K13A20O 2C2013 01 07.52315 06 16 28.33 -09 40 47.5 18.4 RoEA035E10 K13A20O 2C2013 01 07.52588 06 16 28.16 -09 41 21.4 18.3 RoEA035E10 K13A20O 2C2013 01 07.52849 06 16 28.00 -09 41 53.8 18.4 RoEA035E10 Observer details: 704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, G. Spitz, R. Brungard, J. Paige, P. Festler, T. McVey, A. Valdivia, C. Gall. 1.0-m f/2.15 reflector + CCD. E10 Siding Spring-Faulkes Telescope South. Observers K. Rochowicz, E. Guido, N. Howes. 2.0-m f/10.0 Ritchey-Chretien + CCD. H21 Astronomical Research Observatory, Westfield. Observer R. Holmes. Measurers L. Buzzi, H. Devore, S. Foglia, T. Vorobjov. 0.61-m f/4.0 astrograph + CCD. Orbital elements: 2013 AO20 Earth MOID = 0.0890 AU Epoch 2012 Sept. 30.0 TT = JDT 2456200.5 MPC M 318.40093 (2000.0) P Q n 0.46383129 Peri. 177.18610 -0.12216530 -0.89353577 a 1.6528344 Node 279.54857 +0.90184053 +0.08183654 e 0.3519701 Incl. 25.98416 +0.41443853 -0.44147096 P 2.12 H 21.5 G 0.15 U 8 Residuals in seconds of arc 130106 704 1.1+ 0.3+ 130106 704 0.2- 0.2- 130107 E10 0.0 0.1- 130106 704 0.1- 0.0 130107 H21 0.0 0.0 130107 E10 0.1- 0.0 130106 704 0.0 0.0 130107 H21 0.1+ 0.1+ 130107 E10 0.2- 0.1+ 130106 704 0.9- 0.2- 130107 H21 0.3+ 0.1+ Ephemeris: 2013 AO20 a,e,i = 1.65, 0.35, 26 q = 1.0711 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2012 12 08 09 24 39.6 +86 48 44 0.2149 1.0902 114.0 55.7 20.4 ... 2012 12 23 06 38 03.9 +62 31 24 0.1121 1.0726 140.5 35.7 18.4 ... 2012 12 31 06 22 46.6 +25 34 47 0.08833 1.0713 175.1 4.5 16.8 ... 2013 01 06 06 17 20.5 -04 00 26 0.1028 1.0742 150.7 26.6 17.9 2013 01 07 06 16 44.6 -07 49 43 0.1075 1.0750 146.9 30.0 18.1 2013 01 08 06 16 13.1 -11 17 42 0.1127 1.0759 143.3 33.1 18.3 ... 2013 01 14 06 14 25.8 -25 57 13 0.1506 1.0830 128.1 45.6 19.3 ... 2013 01 22 06 15 04.7 -35 32 55 0.2096 1.0973 117.7 52.6 20.2 ... 2013 02 06 06 23 11.1 -41 53 53 0.3244 1.1371 109.7 54.8 21.3 A. U. Tomatic (C) Copyright 2013 MPC M.P.E.C. 2013-A35