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  • MPEC 2017-Y14 : 2017 XN61

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    M.P.E.C. 2017-Y14                                Issued 2017 Dec. 17, 17:50 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 XN61
    
    Observations:
         K17X61N* C2017 12 14.30254 05 14 58.97 +19 08 28.3          20.2 GUEY014G96
         K17X61N  C2017 12 14.30776 05 14 58.22 +19 08 33.0          20.2 GUEY014G96
         K17X61N  C2017 12 14.31297 05 14 57.46 +19 08 38.3          20.2 GUEY014G96
         K17X61N  C2017 12 14.31819 05 14 56.72 +19 08 43.5          19.9 GUEY014G96
         K17X61N  C2017 12 14.43355 05 14 40.42 +19 10 31.8          20.2 GUEY014I52
         K17X61N  C2017 12 14.43820 05 14 39.75 +19 10 36.4          20.0 GUEY014I52
         K17X61N  C2017 12 14.43896 05 14 39.65 +19 10 36.8          20.2 GUEY014I52
         K17X61N  C2017 12 14.44393 05 14 38.98 +19 10 41.7          20.1 GUEY014I52
         K17X61N  C2017 12 14.80602 05 13 54.45 +19 16 25.1          20.3 VSEY014033
         K17X61N  C2017 12 14.80832 05 13 54.17 +19 16 27.2          20.1 VSEY014033
         K17X61N  C2017 12 14.81910 05 13 52.69 +19 16 38.0          20.2 VSEY014033
         K17X61N  C2017 12 14.87951 05 13 44.32 +19 17 38.8          19.8 VSEY014033
         K17X61N  C2017 12 14.88182 05 13 43.99 +19 17 41.1          19.7 VSEY014033
         K17X61N  C2017 12 14.88411 05 13 43.67 +19 17 43.4          19.6 VSEY014033
         K17X61N  C2017 12 15.18164705 13 05.21 +19 22 42.2          20.0 GUEY014H01
         K17X61N  C2017 12 15.18510005 13 04.71 +19 22 45.7          20.0 GUEY014H01
         K17X61N  C2017 12 15.19199 05 13 03.86 +19 22 53.5          20.2 GUEY014I52
         K17X61N  C2017 12 15.19208305 13 03.73 +19 22 53.0          20.1 GUEY014H01
         K17X61N  C2017 12 15.20166 05 13 02.45 +19 23 02.8                UEY014I52
         K17X61N  C2017 12 15.20296705 13 02.19 +19 23 03.8          19.9 GUEY014H01
         K17X61N  C2017 12 16.15975 05 10 56.83 +19 38 42.8          19.7 GUEY014I52
         K17X61N  C2017 12 16.16810 05 10 55.70 +19 38 51.4          19.9 GUEY014I52
         K17X61N  C2017 12 16.17200 05 10 55.15 +19 38 55.8          20.1 GUEY014I52
         K17X61N KC2017 12 17.10303 05 08 50.08 +19 54 06.5                UEY014J95
         K17X61N KC2017 12 17.10801 05 08 49.39 +19 54 10.4          20.6 GUEY014J95
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers C. Hoegner,
        B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
    G96 Mt. Lemmon Survey.  Observer D. C. Fuls.  Measurers E. J. Christensen,
        D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
        S. M. Larson, G. J. Leonard, R. G. Matheny, 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 reflector + CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers E. J. Christensen,
        R. A. Kowalski.  Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs,
        A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
        R. G. Matheny, R. L. Seaman, F. C. Shelly.  1.0-m reflector + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.40-m f/6.0 Schmidt-Cassegrain
        + CCD.
    
    Orbital elements:
    2017 XN61                                                Earth MOID = 0.1755 AU
    Epoch 2017 Sept. 4.0 TT = JDT 2458000.5                 MPC
    M 199.06855              (2000.0)            P               Q
    n   0.71536113     Peri.   88.64301     -0.99530754     -0.02003851
    a   1.2381858      Node    90.20270     -0.01914791     -0.91818728
    e   0.0767453      Incl.    5.43204     +0.09484861     -0.39563944
    P   1.38           H   22.3           G   0.15           U   8
    Residuals in seconds of arc
    171214 G96  0.1-  0.3+    171214 033  0.4+  0.2-    171215 I52  0.5-  0.3-
    171214 G96  0.1-  0.1-    171214 033  0.3+  0.3-    171215 H01  0.3+  0.0
    171214 G96  0.3-  0.2+    171214 033  0.3+  0.1-    171216 I52  0.9-  0.1-
    171214 G96  0.2-  0.3+    171214 033  0.2+  0.1-    171216 I52  0.2-  0.0
    171214 I52  0.1+  0.2-    171214 033  0.2+  0.0     171216 I52  0.2-  0.3+
    171214 I52  0.2-  0.1+    171215 H01  0.2+  0.1-    171217 J95  0.1+  0.4+
    171214 I52  0.1-  0.2-    171215 H01  0.1+  0.1-    171217 J95  0.1+  0.4-
    171214 I52  0.1+  0.1+    171215 I52  0.1+  0.2+
    171214 033  0.1-  0.0     171215 H01  0.2+  0.1+
    
    Ephemeris:
    2017 XN61                a,e,i = 1.24, 0.08, 5                   q = 1.1432
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 11 17    05 54 37.7 +13 47 13   0.3315  1.2739   144.7    26.6    21.6
    ...
    2017 12 02    05 38 53.1 +16 08 41   0.2806  1.2572   163.3    13.0    20.8
    ...
    2017 12 10    05 24 06.8 +18 00 46   0.2644  1.2480   173.7     4.9    20.3
    ...
    2017 12 16    05 11 16.6 +19 36 15   0.2580  1.2409   173.6     5.1    20.3
    2017 12 17    05 09 04.8 +19 52 43   0.2574  1.2397   172.4     6.0    20.3
    2017 12 18    05 06 53.1 +20 09 16   0.2569  1.2385   171.1     7.1    20.3
    ...
    2017 12 24    04 54 04.2 +21 49 16   0.2571  1.2314   162.6    13.8    20.6
    ...
    2018 01 01    04 39 31.0 +23 59 17   0.2643  1.2219   151.4    22.7    20.9
    ...
    2018 01 16    04 25 45.4 +27 37 51   0.2938  1.2044   133.3    36.5    21.5
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-Y14
    

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