• MPC Preparation (Info)

  • MPEC 2021-J223 : 2021 JR6

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    M.P.E.C. 2021-J223                                 Issued 2021 May 14, 17:06 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 JR6                                 
    
    
    Observations:
         K21J06R* C2021 05 12.31012012 31 19.726-19 48 49.15         21.53wUEJ223F51
         K21J06R  C2021 05 12.32116412 31 21.508-19 48 37.13         21.51wUEJ223F51
         K21J06R  C2021 05 12.33217612 31 23.304-19 48 24.93         21.26wUEJ223F51
         K21J06R KC2021 05 12.43853112 31 43.97 -19 45 02.7          21.6 GVEJ223474
         K21J06R KC2021 05 12.44557012 31 45.20 -19 44 54.6          21.3 GVEJ223474
         K21J06R KC2021 05 12.45265512 31 46.44 -19 44 46.6          21.1 GVEJ223474
         K21J06R KC2021 05 13.16197912 34 13.27 -19 33 03.0          21.36GVEJ223I52
         K21J06R KC2021 05 13.16533812 34 13.87 -19 32 59.2          21.36GVEJ223I52
         K21J06R KC2021 05 13.31136612 34 46.51 -19 28 26.2          20.9 GVEJ223474
         K21J06R KC2021 05 13.31430412 34 47.05 -19 28 22.6          21.1 GVEJ223474
         K21J06R KC2021 05 13.31724312 34 47.61 -19 28 19.4          20.4 GVEJ223474
         K21J06R KC2021 05 14.15371312 37 50.93 -19 13 17.0          20.4 VqEJ223858
         K21J06R KC2021 05 14.16063412 37 52.30 -19 13 08.6          20.5 VqEJ223858
         K21J06R KC2021 05 14.16756012 37 53.64 -19 13 00.1          20.6 VqEJ223858
         K21J06R KC2021 05 14.18176512 37 56.89 -19 12 39.9          20.91GVEJ223I52
         K21J06R KC2021 05 14.18847912 37 58.17 -19 12 31.9          20.01GVEJ223I52
         K21J06R KC2021 05 14.19183712 37 58.84 -19 12 28.0          20.53GVEJ223I52
    
    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.
    858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.51-m Schmidt-
        Cassegrain + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz, M.
        Willman.  Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
        Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
        R. Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + 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.
    
    Orbital elements:
    2021 JR6                                                 Earth MOID = 0.0518 AU
    Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Pike                    
    M 302.04187              (2000.0)            P               Q                  
    n   0.34256577     Peri.    9.43998     -0.29986905     +0.94983839             
    a   2.0228953      Node   243.15391     -0.88162503     -0.31148215             
    e   0.4733104      Incl.    5.71197     -0.36443909     -0.02803395             
    P   2.88           H   24.39          G   0.15           U   8                  
    Residuals in seconds of arc
    210512 F51  0.0   0.0     210513 I52  0.0   0.1+    210514 858  0.3+  0.0
    210512 F51  0.1-  0.0     210513 I52  0.1-  0.1+    210514 858  0.2-  0.1+
    210512 F51  0.1+  0.0     210513 474  0.2+  0.1-    210514 I52  0.3+  0.2+
    210512 474  0.4-  0.3-    210513 474  0.1-  0.3+    210514 I52  0.3-  0.1-
    210512 474  0.2-  0.1-    210513 474  0.1-  0.2+    210514 I52  0.2-  0.4-
    210512 474  0.1+  0.2-    210514 858  0.3+  0.1+
    
    Ephemeris:
    2021 JR6                 a,e,i = 2.02, 0.47, 6                   q = 1.0654
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2021 04 14    12 04 27.9 -23 26 17   0.2233  1.2095   155.4    20.2    22.6
    ...
    2021 04 29    12 06 43.3 -22 28 48   0.1576  1.1415   146.3    29.3    21.9
    ...
    2021 05 07    12 17 32.2 -21 09 19   0.1272  1.1126   142.4    33.6    21.5
    ...
    2021 05 13    12 33 38.4 -19 35 06   0.1063  1.0951   141.0    35.5    21.2
    2021 05 14    12 37 15.0 -19 15 19   0.1030  1.0925   140.9    35.7    21.1
    2021 05 15    12 41 10.8 -18 54 04   0.09972 1.0900   140.9    35.8    21.0
    ...
    2021 05 21    13 12 49.9 -16 06 36   0.08142 1.0777   142.3    35.0    20.5
    ...
    2021 05 29    14 24 20.8 -09 28 36   0.06265 1.0677   149.0    29.2    19.8
    ...
    2021 06 13    17 41 53.7 +09 20 38   0.06414 1.0701   147.2    30.9    19.9
    
    M. P. C. Staff               (C) Copyright 2021 MPC           M.P.E.C. 2021-J223
    


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