• MPC Preparation (Info)

  • MPEC 2018-X128: 2018 XN4

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    M.P.E.C. 2018-X128                               Issued 2018 Dec. 15, 17:28 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
    
                                       2018 XN4
    
    Observations:
         K18X04N* C2018 12 10.28539 05 05 42.30 +24 48 43.2          20.5 GVEX128G96
         K18X04N  C2018 12 10.29099 05 05 45.32 +24 48 12.1          21.4 GVEX128G96
         K18X04N  C2018 12 10.29661 05 05 48.30 +24 47 41.6          21.4 GVEX128G96
         K18X04N  C2018 12 10.30223 05 05 51.35 +24 47 11.0          21.6 GVEX128G96
         K18X04N  C2018 12 10.34830505 06 15.72 +24 42 55.2          21.7 GVEX128H01
         K18X04N  C2018 12 10.35157805 06 17.47 +24 42 37.2          21.3 GVEX128H01
         K18X04N  C2018 12 10.36827405 06 26.46 +24 41 04.7          21.5 GVEX128H01
         K18X04N  C2018 12 10.37166705 06 28.28 +24 40 45.9          21.4 GVEX128H01
         K18X04N  C2018 12 13.32110 05 33 43.34 +20 02 44.2                VEX128G96
         K18X04N  C2018 12 13.32185 05 33 43.64 +20 02 39.7                VEX128G96
         K18X04N  C2018 12 13.32260 05 33 43.99 +20 02 36.4                VEX128G96
         K18X04N  C2018 12 13.32335 05 33 44.39 +20 02 31.3          21.8 GVEX128G96
         K18X04N  C2018 12 15.29939 05 50 43.91 +16 51 52.7          22.0 GVEX128G96
         K18X04N  C2018 12 15.30229 05 50 45.24 +16 51 37.2          22.0 GVEX128G96
         K18X04N  C2018 12 15.30374 05 50 45.92 +16 51 28.0                VEX128G96
    
    Observer details:
    G96 Mt. Lemmon Survey.  Observers D. C. Fuls, A. R. Gibbs, G. J. Leonard.
        Measurers B. M. Africano, 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, R. L. Seaman, F. C. Shelly.  1.5-m reflector + 10K CCD.
    H01 Magdalena Ridge Observatory, Socorro.  Observers W. H. Ryan, E. V. Ryan.
        Measurer W. H. Ryan.  2.4-m f/8.9 Ritchey-Chretien + CCD.
    
    Orbital elements:
    2018 XN4                                                 Earth MOID = 0.0929 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M  30.83958              (2000.0)            P               Q
    n   0.22790290     Peri.  181.42567     +0.16462376     -0.97770982
    a   2.6544190      Node   259.11150     +0.90627263     +0.20207985
    e   0.5941821      Incl.    7.62600     +0.38931857     -0.05698462
    P   4.32           H   26.5           G   0.15           U   8
    Residuals in seconds of arc
    181210 G96  0.2-  0.4+    181210 H01  0.1+  0.1+    181213 G96  0.6-  0.5+
    181210 G96  0.1+  0.3-    181210 H01  0.0   0.3+    181213 G96  0.2-  0.2-
    181210 G96  0.3-  0.2-    181210 H01  0.1-  0.3+    181215 G96  0.2+  0.4-
    181210 G96  0.3+  0.2-    181213 G96  0.7+  0.4-    181215 G96  0.0   0.8+
    181210 H01  0.3+  0.0     181213 G96  0.3-  0.5-    181215 G96  0.1+  0.1-
    
    Ephemeris:
    2018 XN4                 a,e,i = 2.65, 0.59, 8                   q = 1.0772
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 11 15    01 55 25.0 +40 12 31   0.1604  1.1329   151.6    24.5    23.9
    ...
    2018 11 30    03 27 43.7 +36 21 07   0.1083  1.0892   161.0    17.2    22.8
    ...
    2018 12 08    04 43 33.1 +28 07 16   0.09422 1.0788   173.7     5.7    22.0
    ...
    2018 12 14    05 39 40.8 +18 57 39   0.09333 1.0773   174.4     5.1    21.9
    2018 12 15    05 48 13.0 +17 21 10   0.09404 1.0776   172.5     6.9    22.0
    2018 12 16    05 56 26.8 +15 45 21   0.09500 1.0780   170.6     8.6    22.1
    ...
    2018 12 22    06 38 53.0 +06 58 23   0.1053  1.0837   161.0    17.2    22.7
    ...
    2018 12 30    07 17 59.8 -01 20 44   0.1284  1.0995   153.3    23.7    23.4
    ...
    2019 01 14    07 56 00.1 -07 56 52   0.1896  1.1522   150.4    25.0    24.3
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-X128
    

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