MPEC 2018-R138: 2018 RB5
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M.P.E.C. 2018-R138 Issued 2018 Sept. 13, 14:13 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 RB5 Observations: K18R05B* C2018 09 11.23208 22 23 36.76 +07 11 12.0 20.9 G ER138G96 K18R05B C2018 09 11.23775 22 23 37.17 +07 11 37.3 21.0 G ER138G96 K18R05B C2018 09 11.24345 22 23 37.55 +07 12 02.7 20.8 G ER138G96 K18R05B C2018 09 11.25007 22 23 38.07 +07 12 32.8 21.6 G ER138G96 K18R05B C2018 09 11.27572 22 23 39.87 +07 14 29.3 20.7 G ER138V06 K18R05B KC2018 09 11.27719 22 23 38.93 +07 14 26.6 21.0 GUER138734 K18R05B C2018 09 11.28065 22 23 40.30 +07 14 51.1 ER138V06 K18R05B C2018 09 11.28155 22 23 40.35 +07 14 55.0 21.4 G ER138V06 K18R05B KC2018 09 11.28399 22 23 39.46 +07 14 57.4 21.3 GUER138734 K18R05B C2018 09 11.28648 22 23 40.72 +07 15 17.4 22.4 G ER138V06 K18R05B KC2018 09 11.29118 22 23 40.03 +07 15 29.3 21.2 GUER138734 K18R05B KC2018 09 11.49711 22 24 02.94 +07 32 51.1 20.3 RVER138474 K18R05B KC2018 09 11.50005 22 24 03.14 +07 33 04.7 20.1 RVER138474 K18R05B KC2018 09 11.50299 22 24 03.37 +07 33 17.4 20.0 RVER138474 K18R05B C2018 09 11.84137 22 24 41.30 +07 56 43.2 20.5 VSER138033 K18R05B C2018 09 11.84487 22 24 41.61 +07 56 59.1 19.7 VSER138033 K18R05B C2018 09 11.84839 22 24 41.91 +07 57 14.7 19.6 VSER138033 K18R05B C2018 09 11.85190 22 24 42.23 +07 57 30.8 20.1 VSER138033 K18R05B pC2018 09 11.88047722 24 44.57 +07 59 47.2 21.3 GVER138L01 K18R05B pC2018 09 11.88513122 24 44.95 +08 00 09.8 21.3 GVER138L01 K18R05B KC2018 09 11.92669 22 24 48.59 +08 03 19.6 21.1 VER138104 K18R05B KC2018 09 11.93244 22 24 49.03 +08 03 45.7 21.4 VER138104 K18R05B KC2018 09 11.93819 22 24 49.48 +08 04 11.7 21.1 VER138104 K18R05B KC2018 09 12.15563922 25 14.38 +08 20 44.6 21.3 VuER138H21 K18R05B KC2018 09 12.16029022 25 14.73 +08 21 05.7 21.4 VuER138H21 K18R05B KC2018 09 12.16725722 25 15.28 +08 21 37.5 21.1 VuER138H21 K18R05B C2018 09 12.20494 22 25 20.09 +08 24 32.4 ER138I52 K18R05B C2018 09 12.21092 22 25 20.69 +08 25 04.9 20.9 G ER138I52 K18R05B C2018 09 12.21342 22 25 20.81 +08 25 16.4 21.0 G ER138I52 K18R05B C2018 09 12.21940 22 25 21.30 +08 25 43.6 21.3 G ER138I52 K18R05B C2018 09 12.89286 22 26 34.38 +09 16 31.8 19.9 VSER138033 K18R05B C2018 09 12.89625 22 26 34.69 +09 16 46.8 19.7 VSER138033 K18R05B C2018 09 12.89965 22 26 35.01 +09 17 02.5 20.1 VSER138033 K18R05B C2018 09 12.90304 22 26 35.28 +09 17 18.1 20.3 VSER138033 K18R05B C2018 09 12.90645 22 26 35.59 +09 17 33.6 20.1 VSER138033 K18R05B C2018 09 12.90984 22 26 35.90 +09 17 49.6 19.6 VSER138033 K18R05B C2018 09 13.19016 22 27 09.12 +09 39 34.1 21.2 GUER138I52 K18R05B C2018 09 13.19669 22 27 09.69 +09 40 03.7 21.1 GUER138I52 K18R05B C2018 09 13.19835 22 27 09.84 +09 40 12.2 21.2 GUER138I52 K18R05B C2018 09 13.20321 22 27 10.21 +09 40 34.2 20.5 GUER138I52 Observer details: 033 Karl Schwarzschild Observatory, Tautenburg. Observers C. Hoegner, B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD. 104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD. 474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M. Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD. 734 Farpoint Observatory. Observer G. Hug. 0.69-m reflector + CCD. G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers B. M. Africano, E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly. 1.5-m reflector + 10K CCD. H21 Astronomical Research Observatory, Westfield. Observer R. Holmes. Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.81-m f/4.0 astrograph + CCD. I52 Steward Observatory, Mt. Lemmon Station. Observer E. J. Christensen. Measurers B. M. Africano, E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD. L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector + CCD. V06 Catalina Sky Survey-Kuiper. Observer R. A. Kowalski. Measurers B. M. Africano, E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly. 1.55-m reflector + CCD. Orbital elements: 2018 RB5 Earth MOID = 0.0980 AU Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC M 272.77399 (2000.0) P Q n 0.45727661 Peri. 36.05201 +0.99349033 -0.10571648 a 1.6685916 Node 329.93257 +0.07414888 +0.88293433 e 0.3462580 Incl. 4.85899 +0.08648072 +0.45743960 P 2.16 H 24.7 G 0.15 U 7 Residuals in seconds of arc 180911 G96 0.2+ 0.3+ 180911 033 0.0 0.0 180912 I52 0.6- 0.0 180911 G96 0.1+ 0.1- 180911 033 0.2+ 0.1- 180912 I52 0.3- 0.1- 180911 G96 0.5- 0.4- 180911 033 0.1+ 0.5- 180912 033 0.0 0.2+ 180911 G96 0.1+ 0.2- 180911 033 0.4+ 0.4- 180912 033 0.1+ 0.3- 180911 V06 0.9- 0.5+ 180911 L01 0.7- 0.7- 180912 033 0.4+ 0.2- 180911 734 0.0 0.0 180911 L01 0.7- 0.8+ 180912 033 0.0 0.1- 180911 V06 0.2+ 0.1+ 180911 104 0.3+ 0.3+ 180912 033 0.1+ 0.2- 180911 V06 0.1- 0.1- 180911 104 0.1- 0.3+ 180912 033 0.3+ 0.3+ 180911 734 0.1+ 0.2+ 180911 104 0.2- 0.2+ 180913 I52 0.4- 0.2+ 180911 V06 0.1+ 0.1+ 180912 H21 0.6+ 0.1+ 180913 I52 0.1- 0.4- 180911 734 0.4+ 0.2- 180912 H21 0.3+ 0.0 180913 I52 0.1+ 0.5+ 180911 474 0.4+ 0.0 180912 H21 0.1+ 0.0 180913 I52 0.5- 0.1+ 180911 474 0.0 0.3+ 180912 I52 (1.3- 5.2-) 180911 474 0.0 0.3- 180912 I52 0.5+ 0.1- Ephemeris: 2018 RB5 a,e,i = 1.67, 0.35, 5 q = 1.0908 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2018 08 14 21 55 54.7 -18 00 25 0.1656 1.1778 173.5 5.6 21.6 ... 2018 08 29 22 06 30.1 -07 28 51 0.1231 1.1325 174.1 5.2 20.9 ... 2018 09 06 22 15 34.8 +00 52 28 0.1089 1.1145 167.1 11.7 20.8 ... 2018 09 12 22 24 56.2 +08 09 38 0.1023 1.1041 161.5 16.8 20.9 2018 09 13 22 26 45.5 +09 25 35 0.1016 1.1026 160.6 17.6 20.9 2018 09 14 22 28 39.6 +10 41 59 0.1009 1.1013 159.7 18.5 20.9 ... 2018 09 20 22 41 49.6 +18 19 51 0.09917 1.0947 154.5 23.3 21.0 ... 2018 09 28 23 03 57.4 +27 38 11 0.1020 1.0908 148.9 28.4 21.2 ... 2018 10 13 23 55 09.4 +39 02 55 0.1208 1.0981 144.2 32.2 21.7 A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-R138


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