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  • MPEC 2017-X79 : 2017 XD

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    M.P.E.C. 2017-X79                                Issued 2017 Dec. 8, 19:55 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 XD
    
    Observations:
         K17X00D* C2017 12 03.63308 10 31 14.965-21 13 17.19         19.5 iLEX079F51
         K17X00D  C2017 12 03.64084 10 31 16.377-21 13 25.87         19.6 iLEX079F51
         K17X00D  C2017 12 03.64861 10 31 17.806-21 13 34.42         19.6 iLEX079F51
         K17X00D |C2017 12 06.27070 10 39 44.79 -22 02 42.2          19.4 GUEX079807
         K17X00D |C2017 12 06.27614 10 39 45.84 -22 02 48.6          19.6 GUEX079807
         K17X00D |C2017 12 06.28172 10 39 46.96 -22 02 54.5          19.6 GUEX079807
         K17X00D |C2017 12 08.27012 10 46 38.76 -22 41 22.2          19.1 GUEX079807
         K17X00D |C2017 12 08.27185 10 46 39.14 -22 41 24.1          19.6 GUEX079807
         K17X00D |C2017 12 08.27359 10 46 39.52 -22 41 26.0          19.4 GUEX079807
         K17X00D  C2017 12 08.51696 10 47 31.32 -22 46 22.2          19.6 RoEX079926
         K17X00D  C2017 12 08.52427 10 47 32.88 -22 46 30.7          19.6 RoEX079926
         K17X00D  C2017 12 08.53331 10 47 34.80 -22 46 41.6          19.4 RoEX079926
    
    Observer details:
    807 Cerro Tololo.  Observers T. Linder, R. Holmes.  0.61-m f/6.5 astrograph
        + CCD.
    926 Tenagra II Observatory.  Observers M. Schwartz, P. R. Holvorcem.  Measurer
        M. Schwartz.  0.81-m f/7 Ritchey-Chretien + CCD.
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
        M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
        M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk.  1.8-m
        Ritchey-Chretien + CCD.
    
    Orbital elements:
    2017 XD                                                  Earth MOID = 0.1724 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 299.50949              (2000.0)            P               Q
    n   0.37121099     Peri.   93.40419     -0.34463199     +0.88430494
    a   1.9174417      Node   149.57361     -0.89293773     -0.41234679
    e   0.8059331      Incl.   38.46429     +0.28963944     -0.21903174
    P   2.66           H   17.3           G   0.15           U   9
    Residuals in seconds of arc
    171203 F51  0.0   0.0     171206 807  0.3-  0.4-    171208 807  0.3+  0.3+
    171203 F51  0.1-  0.0     171206 807  0.1-  0.2+    171208 926  0.2-  0.1-
    171203 F51  0.1+  0.1+    171208 807  0.1-  0.0     171208 926  0.0   0.1+
    171206 807  0.2+  0.3-    171208 807  0.1+  0.1+    171208 926  0.0   0.1-
    
    Ephemeris:
    2017 XD                  a,e,i = 1.92, 0.81, 38                  q = 0.3721
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 11 08    09 29 38.7 -14 28 42   1.6248  1.7051    77.2    34.5    20.9
    ...
    2017 11 23    10 02 12.6 -18 09 39   1.3160  1.5306    81.9    39.7    20.4
    ...
    2017 12 01    10 23 21.8 -20 25 23   1.1529  1.4311    83.6    43.2    20.1
    ...
    2017 12 07    10 42 12.2 -22 16 43   1.0328  1.3533    84.2    46.4    19.8
    2017 12 08    10 45 40.7 -22 36 07   1.0130  1.3400    84.2    47.0    19.7
    2017 12 09    10 49 15.9 -22 55 45   0.9934  1.3267    84.2    47.6    19.7
    ...
    2017 12 15    11 13 37.3 -24 58 12   0.8779  1.2449    83.7    51.8    19.4
    ...
    2017 12 23    11 56 47.2 -27 47 33   0.7337  1.1310    81.0    59.2    19.0
    ...
    2018 01 07    14 16 59.0 -30 23 34   0.5342  0.9010    65.2    82.2    18.6
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-X79
    

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