MPEC 2021-J184 : 2021 JG5
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M.P.E.C. 2021-J184 Issued 2021 May 12, 13:54 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 2021 JG5 Observations: K21J05G*KC2021 05 09.19813 14 22 44.32 -30 26 45.5 19.4 GVEJ184W94 K21J05G KC2021 05 09.20385 14 22 44.97 -30 25 59.1 19.5 GVEJ184W94 K21J05G KC2021 05 09.20956 14 22 45.91 -30 25 13.4 18.5 GVEJ184W94 K21J05G KC2021 05 10.13161 14 25 14.17 -28 23 22.8 19.2 GVEJ184W95 K21J05G KC2021 05 10.13693 14 25 14.89 -28 22 40.7 VEJ184W95 K21J05G KC2021 05 10.14224 14 25 15.69 -28 21 59.0 VEJ184W95 K21J05G KC2021 05 10.50704 14 26 12.37 -27 33 58.0 20.0 VqEJ184E23 K21J05G KC2021 05 10.51352 14 26 13.36 -27 33 07.9 20.5 VqEJ184E23 K21J05G KC2021 05 10.52000 14 26 14.28 -27 32 17.0 19.7 VqEJ184E23 K21J05G KC2021 05 10.53296 14 26 16.20 -27 30 37.5 20.1 VqEJ184E23 K21J05G KC2021 05 11.08920714 27 40.05 -26 18 08.4 19.6 GXEJ184Y00 K21J05G KC2021 05 11.09005214 27 40.18 -26 18 02.3 19.4 GXEJ184Y00 K21J05G KC2021 05 11.09111114 27 40.36 -26 17 53.4 19.3 GXEJ184Y00 K21J05G |C2021 05 11.15805 14 27 50.37 -26 09 07.3 20.2 VuEJ184807 K21J05G |C2021 05 11.15974 14 27 50.60 -26 08 54.2 20.5 VuEJ184807 K21J05G |C2021 05 11.16147 14 27 50.84 -26 08 40.6 20.4 VuEJ184807 K21J05G HC2021 05 12.19615114 30 22.14 -23 56 02.4 19.83GVEJ184I52 K21J05G HC2021 05 12.19826714 30 22.44 -23 55 47.2 21.80GVEJ184I52 K21J05G KC2021 05 12.20350 14 30 21.69 -23 54 41.9 VEJ184W95 K21J05G KC2021 05 12.20879 14 30 22.40 -23 54 01.6 VEJ184W95 K21J05G KC2021 05 12.21408 14 30 23.08 -23 53 21.0 19.5 GVEJ184W95 K21J05G KC2021 05 12.51969714 31 06.59 -23 14 23.2 20.4 GVEJ184474 K21J05G KC2021 05 12.52089514 31 06.74 -23 14 13.8 20.3 GVEJ184474 K21J05G KC2021 05 12.52209414 31 06.95 -23 14 05.1 20.4 GVEJ184474 K21J05G KC2021 05 12.52329414 31 07.02 -23 13 55.5 20.2 GVEJ184474 K21J05G KC2021 05 12.52449314 31 07.24 -23 13 46.4 20.1 GVEJ184474 Observer details: 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. 807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes, L. Horn. 0.61-m f/6.5 astrograph + CCD. E23 Arcadia. Observer A. Hidas. 0.35-m f/1.9 reflector + CCD. I52 Steward Observatory, Mt. Lemmon Station. Observer T. A. Pruyne. Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m reflector + CCD. W94 MAP, San Pedro de Atacama. Observers A. Maury, G. Attard. Measurers A. Maury, G. Attard, D. Parrott. 0.28-m f/2.2 Schmidt + CCD. W95 Observatorio Panameno, San Pedro de Atacama. Observers A. Maury, G. Attard, J. Fabrega. Measurers A. Maury, G. Attard, D. Parrott. 0.40-m f/3.8 reflector + CCD. Y00 SONEAR Observatory, Oliveira. Observers C. Jacques, E. Pimentel, J. Barros. Measurer C. Jacques. 0.45-m f/2.9 reflector + CCD. Orbital elements: 2021 JG5 Earth MOID = 0.2709 AU Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres M 340.73072 (2000.0) P Q n 0.17321401 Peri. 325.07390 -0.87922829 +0.19435356 a 3.1872347 Node 232.43939 -0.20364504 -0.97870822 e 0.6189715 Incl. 33.27734 -0.43068122 +0.06600688 P 5.69 H 21.72 G 0.15 U 9 Residuals in seconds of arc 210509 W94 1.4+ 0.3- 210510 E23 1.5+ 1.9- 210512 W95 0.2+ 0.5+ 210509 W94 1.3- 0.4+ 210511 Y00 0.4- 0.6+ 210512 W95 0.5+ 0.3+ 210509 W94 0.2- 0.5+ 210511 Y00 0.2- 0.0 210512 W95 0.5+ 0.3+ 210510 W95 0.1- 0.3- 210511 Y00 0.3+ 0.7+ 210512 474 0.2- 0.3- 210510 W95 0.6- 0.2- 210511 807 0.1- 0.0 210512 474 0.3- 0.0 210510 W95 0.1+ 0.3- 210511 807 0.1- 0.0 210512 474 0.5+ 0.4- 210510 E23 0.8- 0.9+ 210511 807 0.1- 0.0 210512 474 0.7- 0.1+ 210510 E23 0.2+ 0.2+ 210512 I52 0.3- 0.8+ 210512 474 0.2+ 0.0 210510 E23 0.2+ 0.3+ 210512 I52 0.0 0.1- Ephemeris: 2021 JG5 a,e,i = 3.19, 0.62, 33 q = 1.2144 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2021 04 12 11 48 59.1 -72 05 59 0.3850 1.2158 114.9 48.4 21.9 ... 2021 04 27 13 36 41.6 -55 33 51 0.2931 1.2383 137.4 33.3 20.9 ... 2021 05 05 14 10 03.1 -39 43 57 0.2725 1.2609 155.0 19.7 20.4 ... 2021 05 11 14 27 26.6 -26 29 48 0.2781 1.2822 166.7 10.5 20.1 2021 05 12 14 29 53.2 -24 20 47 0.2809 1.2861 167.7 9.6 20.1 2021 05 13 14 32 13.3 -22 14 13 0.2842 1.2901 168.3 9.1 20.2 ... 2021 05 19 14 44 22.0 -10 47 57 0.3144 1.3160 163.3 12.7 20.6 ... 2021 05 27 14 57 03.4 +00 30 30 0.3766 1.3551 151.1 21.2 21.3 ... 2021 06 11 15 15 29.1 +11 45 11 0.5347 1.4405 134.3 30.3 22.5 M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-J184


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