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  • 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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