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  • MPEC 2020-O87 : 2017 NR6

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    M.P.E.C. 2020-O87                                 Issued 2020 July 24, 15:00 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
    
                                    2017 NR6                                 
    
    
                               Revision to MPEC 2017-O16                            
    
    Additional Observations:
         K17N06R  C2020 07 22.24634015 36 24.527-12 32 13.96         22.76GVEO087T14
         K17N06R  C2020 07 22.24751615 36 24.413-12 32 14.22         22.82GVEO087T14
         K17N06R  C2020 07 22.24869515 36 24.296-12 32 14.58         22.52GVEO087T14
         K17N06R  C2020 07 22.26427115 36 22.748-12 32 18.70         22.52GVEO087T14
         K17N06R  C2020 07 22.26545015 36 22.631-12 32 18.98         22.58GVEO087T14
         K17N06R  C2020 07 22.26664215 36 22.513-12 32 19.30         22.71GVEO087T14
         K17N06R  C2020 07 23.29570415 34 49.454-12 37 00.47         22.52GVEO087T14
         K17N06R  C2020 07 23.29688615 34 49.341-12 37 00.80         22.51GVEO087T14
         K17N06R  C2020 07 23.29806615 34 49.229-12 37 01.12         22.45GVEO087T14
    
    Observer details:
    T14 Mauna Kea-UH/Tholen NEO Follow-Up (CFHT).  Observer C. Crowder.  Measurer
        D. J. Tholen.  3.6-m f/4.1 reflector + MegaCam.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    200722 T14 0.12+ 0.02+    200723 T14 0.11+ 0.02+    MPO416465   +0.26 days
    
    Orbital elements:
    2017 NR6                                                 Earth MOID = 0.0060 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
    M 265.49457              (2000.0)            P               Q
    n   0.64954236     Peri.  267.58271     +0.78644492     -0.61418158
    a   1.3204777      Node   130.30114     +0.59531644     +0.72547695
    e   0.4919817      Incl.    4.92407     +0.16462907     +0.31058685
    P   1.52           H   22.0           G   0.15           U   3
    Residuals in seconds of arc
    170715 F51  0.1+  0.1+    170718 H21  0.3+  0.5+    170727 T09  0.0   0.0
    170715 F51  0.1-  0.1+    170719 807  0.4+  0.2-    170727 T09  0.0   0.0
    170715 F51  0.0   0.1-    170719 807  0.2+  0.1-    170727 T09  0.0   0.0
    170715 F51  0.0   0.1+    170719 807  0.1-  0.2-    170816 291  0.1-  0.7+
    170716 H21  0.0   0.3+    170719 H21  0.0   0.3+    170816 291  0.6+  0.3+
    170716 H21  0.1+  0.1+    170719 H21  0.4+  0.6+    200722 T14  0.1-  0.0
    170716 H21  0.1+  0.1+    170719 H21  0.1-  0.1+    200722 T14  0.0   0.0
    170716 568  0.0   0.1-    170723 J04  0.2+  0.0     200722 T14  0.0   0.0
    170716 568  0.0   0.1-    170723 J04  0.3+  0.2+    200722 T14  0.0   0.0
    170716 568  0.0   0.1-    170726 291  0.1-  0.3+    200722 T14  0.0   0.0
    170717 807  0.0   0.7+    170726 291  0.2-  0.1+    200722 T14  0.0   0.0
    170718 807  0.2-  1.0+    170726 291  0.3+  0.3+    200723 T14  0.0   0.0
    170718 807  0.2-  0.6+    170726 T09  0.0   0.0     200723 T14  0.0   0.0
    170718 H21  0.3+  0.7+    170726 T09  0.0   0.0     200723 T14  0.0   0.0
    170718 H21  0.2+  0.6+    170726 T09  0.0   0.0
    
    Ephemeris:
    2017 NR6                 a,e,i = 1.32, 0.49, 5                   q = 0.6708
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 06 24    16 42 39.9 -11 57 14   0.5131  1.4997   156.0    16.0    22.3
    ...
    2020 07 09    16 02 31.1 -11 53 56   0.4924  1.4013   133.4    31.8    22.5
    ...
    2020 07 17    15 45 24.1 -12 12 02   0.4938  1.3448   122.0    39.9    22.7
    ...
    2020 07 23    15 35 16.1 -12 35 29   0.4976  1.3007   114.1    45.5    22.8
    2020 07 24    15 33 48.8 -12 40 12   0.4983  1.2932   112.8    46.4    22.8
    2020 07 25    15 32 25.3 -12 45 09   0.4990  1.2857   111.5    47.3    22.8
    ...
    2020 07 31    15 25 24.3 -13 19 25   0.5032  1.2397   104.4    52.5    22.9
    ...
    2020 08 08    15 19 13.0 -14 16 14   0.5065  1.1763    95.5    59.1    23.0
    ...
    2020 08 23    15 14 43.8 -16 31 05   0.4982  1.0523    80.7    71.5    23.1
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-O87
    


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