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  • MPEC 2020-O121 : 2020 MX4

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    M.P.E.C. 2020-O121                                Issued 2020 July 26, 22:28 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
    
                                    2020 MX4                                 
    
    
    Observations:
         K20M04X  C2016 12 22.36694 05 33 39.938+02 16 55.04         21.0 wLEO121F51
         K20M04X  C2016 12 22.37983 05 33 38.797+02 17 21.15         21.1 wLEO121F51
         K20M04X  C2016 12 22.40566 05 33 36.504+02 18 13.11         21.2 wLEO121F51
         K20M04X* C2020 06 16.58976222 15 27.470-20 55 16.16         21.96GVEO121F51
         K20M04X  C2020 06 16.59796222 15 28.526-20 55 25.42         22.60GVEO121F51
         K20M04X  C2020 06 28.55666222 43 55.061-25 21 02.38         22.18GVEO121F51
         K20M04X  C2020 06 28.56721922 43 56.636-25 21 18.65         21.25GVEO121F51
         K20M04X  C2020 07 21.52908223 51 17.936-38 00 48.17         21.05GVEO121F51
         K20M04X  C2020 07 21.53945123 51 20.009-38 01 12.49         21.50GVEO121F51
         K20M04X  C2020 07 21.54982123 51 22.050-38 01 36.43         21.37GVEO121F51
         K20M04X  C2020 07 25.57347100 05 30.304-40 38 24.12         21.17wUEO121F51
         K20M04X  C2020 07 25.57861100 05 31.375-40 38 35.98         21.14wUEO121F51
         K20M04X  C2020 07 25.58374300 05 32.452-40 38 48.24         20.97wUEO121F51
         K20M04X  C2020 07 25.58889600 05 33.538-40 39 00.42         21.12wUEO121F51
         K20M04X KC2020 07 26.69643500 09 35.44 -41 22 14.2          20.8 GVEO121474
         K20M04X KC2020 07 26.69879400 09 35.95 -41 22 19.6          20.7 GVEO121474
         K20M04X KC2020 07 26.70115300 09 36.46 -41 22 25.2          20.4 GVEO121474
         K20M04X KC2020 07 26.70351200 09 36.98 -41 22 30.7          20.8 GVEO121474
    
    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.
    F51 Pan-STARRS 1, Haleakala.  Observers B. Gibson, T. Goggia, S. Kahale, T.
        Lowe, A. Schultz, M. Willman, J. Bulger, K. Chambers.  Measurers K.
        Chambers, S. Chastel, L. Denneau, H. Flewelling, M. Huber, E. Lilly, E.
        Magnier, R. Wainscoat, C. Waters, R. Weryk, Y. Ramanjooloo, T. de Boer, J.
        Fairlamb, C.-C. Lin.  1.8-m Ritchey-Chretien + CCD.
    
    Orbital elements:
    2020 MX4                                                 Earth MOID = 0.5552 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Bell
    M 330.03908              (2000.0)            P               Q
    n   0.24076681     Peri.  264.35212     +0.87601742     -0.18087211
    a   2.5590079      Node   105.43868     +0.31189350     +0.91953428
    e   0.4929243      Incl.   27.63352     -0.36785313     +0.34891546
    P   4.09           H   19.9           G   0.15           U   2
    Residuals in seconds of arc
    161222 F51  0.0   0.0     200628 F51  0.2+  0.3+    200725 F51  0.1-  0.1+
    161222 F51  0.0   0.1+    200721 F51  0.0   0.1-    200725 F51  0.0   0.0
    161222 F51  0.0   0.1-    200721 F51  0.2+  0.2-    200726 474  0.0   0.2-
    200616 F51  0.1+  0.0     200721 F51  0.1-  0.0     200726 474  0.0   0.0
    200616 F51  0.2-  0.1-    200725 F51  0.0   0.1-    200726 474  0.1+  0.1-
    200628 F51  0.1-  0.1-    200725 F51  0.1-  0.2+    200726 474  0.2+  0.1-
    
    Ephemeris:
    2020 MX4                 a,e,i = 2.56, 0.49, 28                  q = 1.2976
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 06 26    22 37 32.6 -24 16 28   0.8545  1.6356   121.6    31.9    22.0
    ...
    2020 07 11    23 17 50.6 -31 35 25   0.7118  1.5535   127.1    31.5    21.5
    ...
    2020 07 19    23 42 48.1 -36 23 54   0.6555  1.5124   128.2    31.9    21.2
    ...
    2020 07 25    00 03 26.1 -40 15 41   0.6231  1.4830   128.0    32.7    21.1
    2020 07 26    00 07 02.7 -40 54 53   0.6185  1.4783   127.9    32.9    21.1
    2020 07 27    00 10 42.3 -41 34 07   0.6142  1.4736   127.7    33.0    21.1
    ...
    2020 08 02    00 33 42.6 -45 27 19   0.5929  1.4462   126.2    34.5    21.0
    ...
    2020 08 10    01 06 56.9 -50 18 15   0.5763  1.4125   123.0    37.0    21.0
    ...
    2020 08 25    02 12 54.0 -57 16 03   0.5732  1.3591   115.4    42.2    21.0
    
    M. P. C. Staff               (C) Copyright 2020 MPC           M.P.E.C. 2020-O121
    


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