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  • MPEC 2018-J31 : 2018 JX

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    M.P.E.C. 2018-J31                                Issued 2018 May  9, 18:00 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
    
                                        2018 JX
    
    Observations:
         K18J00X* C2018 05 07.40403 16 21 11.89 +30 19 19.0                UEJ031703
         K18J00X  C2018 05 07.40926 16 21 11.25 +30 19 04.2          19.5 GUEJ031703
         K18J00X  C2018 05 07.41449 16 21 10.55 +30 18 48.5          19.3 GUEJ031703
         K18J00X  C2018 05 07.41972 16 21 09.88 +30 18 32.0          19.2 GUEJ031703
         K18J00X  C2018 05 07.42726 16 21 08.90 +30 18 09.0          19.3 GUEJ031G96
         K18J00X  C2018 05 07.43246 16 21 08.23 +30 17 52.9          18.8 GUEJ031G96
         K18J00X  C2018 05 07.43765 16 21 07.54 +30 17 36.7          19.1 GUEJ031G96
         K18J00X  C2018 05 07.44284 16 21 06.88 +30 17 20.5          19.2 GUEJ031G96
         K18J00X KC2018 05 07.46414 16 21 04.21 +30 16 15.3          18.9 RoEJ031691
         K18J00X KC2018 05 07.46672 16 21 03.88 +30 16 07.2          19.1 RoEJ031691
         K18J00X KC2018 05 07.46930 16 21 03.54 +30 15 58.8          19.2 RoEJ031691
         K18J00X KC2018 05 07.85963 16 20 40.56 +29 54 46.9          18.9 RqEJ031K61
         K18J00X KC2018 05 07.86090 16 20 40.41 +29 54 43.0          19.0 RqEJ031K61
         K18J00X KC2018 05 07.86202 16 20 40.28 +29 54 39.5          19.0 RqEJ031K61
         K18J00X KC2018 05 07.86281 16 20 40.18 +29 54 37.1          18.8 RqEJ031K61
         K18J00X KC2018 05 07.89792 16 20 36.00 +29 52 51.8          18.9 GVEJ031C47
         K18J00X KC2018 05 07.90419 16 20 35.22 +29 52 31.9          19.3 GVEJ031C47
         K18J00X KC2018 05 07.91083 16 20 34.39 +29 52 10.5          19.2 GVEJ031C47
         K18J00X KC2018 05 07.91710 16 20 33.55 +29 51 50.3          18.0 GVEJ031C47
         K18J00X KC2018 05 07.92972 16 20 32.55 +29 51 05.5          19.0 RqEJ031A17
         K18J00X KC2018 05 07.93567 16 20 31.78 +29 50 46.6          18.7 RqEJ031A17
         K18J00X KC2018 05 07.94841 16 20 30.15 +29 50 05.7          18.7 RqEJ031A17
         K18J00X KC2018 05 07.96776 16 20 26.30 +29 49 08.9          18.2 RoEJ031K88
         K18J00X KC2018 05 07.96961 16 20 26.09 +29 49 02.7          18.7 RoEJ031K88
         K18J00X  C2018 05 07.97184 16 20 26.61 +29 49 00.2          19.2 VSEJ031L01
         K18J00X  C2018 05 07.97267 16 20 26.46 +29 48 57.4          19.1 VSEJ031L01
         K18J00X  C2018 05 07.97348 16 20 26.37 +29 48 54.8          19.1 VSEJ031L01
         K18J00X  C2018 05 07.97429 16 20 26.26 +29 48 52.0          19.2 VSEJ031L01
         K18J00X  C2018 05 07.97512 16 20 26.13 +29 48 49.4          19.1 VSEJ031L01
         K18J00X  C2018 05 07.97593 16 20 26.05 +29 48 46.5          19.1 VSEJ031L01
         K18J00X KC2018 05 08.04822 16 20 17.76 +29 44 26.6                VEJ031J95
         K18J00X KC2018 05 08.05044 16 20 17.46 +29 44 18.8                VEJ031J95
         K18J00X KC2018 05 08.05294 16 20 17.11 +29 44 10.5          19.1 GVEJ031J95
         K18J00X KC2018 05 08.30846 16 19 53.72 +29 29 46.4                oEJ031711
         K18J00X KC2018 05 08.31103 16 19 53.40 +29 29 39.3                oEJ031711
         K18J00X KC2018 05 08.31364 16 19 52.90 +29 29 27.7                oEJ031711
         K18J00X  C2018 05 08.45265 16 19 31.57 +29 20 30.1          18.5 GUEJ031I52
         K18J00X  C2018 05 08.45434 16 19 31.31 +29 20 23.2          18.5 GUEJ031I52
         K18J00X  C2018 05 08.45710 16 19 30.86 +29 20 12.1          18.8 GUEJ031I52
         K18J00X  C2018 05 08.45870 16 19 30.63 +29 20 05.5          18.7 GUEJ031I52
         K18J00X KC2018 05 08.86125 16 18 57.19 +28 52 03.3          18.2 RoEJ031K88
         K18J00X KC2018 05 08.86383 16 18 56.81 +28 51 52.9          18.3 RoEJ031K88
         K18J00X KC2018 05 08.86642 16 18 56.43 +28 51 42.5          18.3 RoEJ031K88
         K18J00X KC2018 05 08.86900 16 18 56.03 +28 51 31.7          18.3 RoEJ031K88
         K18J00X KC2018 05 08.96093 16 18 42.29 +28 44 57.1          19.0 RUEJ031K87
         K18J00X KC2018 05 08.97934 16 18 39.22 +28 43 37.5          19.1 RUEJ031K87
         K18J00X KC2018 05 08.98310 16 18 38.61 +28 43 21.4          19.0 RUEJ031K87
         K18J00X  C2018 05 09.02028 16 18 32.09 +28 40 32.9          18.7 VSEJ031033
         K18J00X  C2018 05 09.02102 16 18 31.96 +28 40 29.6          18.6 VSEJ031033
         K18J00X  C2018 05 09.02176 16 18 31.84 +28 40 26.3          18.9 VSEJ031033
         K18J00X KC2018 05 09.28950 16 17 57.93 +28 20 17.5          18.4 RqEJ031850
         K18J00X KC2018 05 09.29650 16 17 56.53 +28 19 43.4          18.6 RqEJ031850
         K18J00X KC2018 05 09.30364 16 17 55.13 +28 19 08.2          19.3 RqEJ031850
         K18J00X KC2018 05 09.31064 16 17 53.75 +28 18 33.9          18.8 RqEJ031850
         K18J00X KC2018 05 09.31735 16 17 52.46 +28 18 01.0          18.4 RqEJ031850
         K18J00X  C2018 05 09.32507 16 17 55.42 +28 17 30.4          18.1 GUEJ031I52
         K18J00X  C2018 05 09.32689 16 17 55.04 +28 17 21.6          18.8 GUEJ031I52
         K18J00X  C2018 05 09.32871 16 17 54.69 +28 17 12.8          18.4 GUEJ031I52
         K18J00X  C2018 05 09.33054 16 17 54.32 +28 17 04.2          18.4 GUEJ031I52
         K18J00X KC2018 05 09.35983 16 17 47.23 +28 14 44.9                oEJ031711
         K18J00X KC2018 05 09.36240 16 17 46.70 +28 14 32.1                oEJ031711
         K18J00X KC2018 05 09.36494 16 17 46.19 +28 14 19.2                oEJ031711
         K18J00X  C2018 05 09.55525 16 17 29.13 +27 57 38.3          18.6 RrEJ031P93
         K18J00X  C2018 05 09.55686 16 17 28.80 +27 57 29.8          18.6 RrEJ031P93
         K18J00X  C2018 05 09.55847 16 17 28.44 +27 57 21.9          18.8 RrEJ031P93
         K18J00X  C2018 05 09.56009 16 17 28.18 +27 57 13.5          18.8 RrEJ031P93
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers C. Hoegner,
        B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3 Schmidt + CCD.
    691 Steward Observatory, Kitt Peak.  Observer A. F. Tubbiolo.  0.9-m f/3
        reflector + CCD.
    703 Catalina Sky Survey.  Observer B. M. Africano.  Measurers B. M. Africano,
        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. L. Seaman, F. C. Shelly.
        0.68-m Schmidt + 10K CCD.
    711 McDonald Observatory.  Observer J. G. Ries.  2.1-m reflector + CCD + focal
        reducer.
    850 Cordell-Lorenz Observatory, Sewanee.  Observer D. T. Durig.  0.3-m f/7.6
        Schmidt-Cassegrain + CCD.
    A17 Guidestar Observatory, Weinheim.  Observers M. Emmerich, S. Melchert.
        0.36-m f/6 Schmidt-Cassegrain + CCD.
    C47 Nonndorf.  Observer G. Dangl.  0.25-m f/4.8 reflector + CCD.
    G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  Measurers B. M. Africano,
        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. L. Seaman, F. C. Shelly.
        1.5-m reflector + 10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers A. R. Gibbs,
        G. J. Leonard.  Measurers B. M. Africano, 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. 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.
    K61 Rokycany Observatory.  Observer M. Adamovsky.  0.51-m f/6.8 reflector
        + CCD.
    K87 Dettelbach Vineyard Observatory.  Observer B. Haeusler.  0.30-m
        Schmidt-Cassegrain + CCD.
    K88 GINOP-KHK, Piszkesteto.  Observer A. Ordasi.  Measurer K. Sarneczky.
        0.60-m Schmidt + CCD.
    L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
        + CCD.
    P93 Space Tracking and Communications Center, JAXA.  Observers S. Urakawa,
        T. Nimura.  1.0-m f/3.0 reflector + CCD.
    
    Orbital elements:
    2018 JX                                                  Earth MOID = 0.0101 AU
    Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
    M 284.27820              (2000.0)            P               Q
    n   0.71911624     Peri.  240.40024     +0.37190873     +0.88136897
    a   1.2338716      Node    54.36301     -0.67824857     +0.47228172
    e   0.2571554      Incl.   21.00563     -0.63376870     +0.01177782
    P   1.37           H   23.3           G   0.15           U   7
    Residuals in seconds of arc
    180507 703  1.0-  1.1-    180507 K88  0.3-  0.3-    180508 K87  0.5-  0.1-
    180507 703  0.2-  0.1-    180507 K88  0.3+  0.4-    180508 K87  0.6-  0.1+
    180507 703  0.3-  0.1+    180507 L01  0.0   0.3-    180508 K87  0.3-  0.4+
    180507 703  0.0   0.4-    180507 L01  0.4-  0.4-    180509 033  0.1-  0.3-
    180507 G96  0.1+  0.2-    180507 L01  0.1-  0.3-    180509 033  0.2-  0.2-
    180507 G96  0.3+  0.2-    180507 L01  0.1-  0.4-    180509 033  0.1-  0.2-
    180507 G96  0.1+  0.3-    180507 L01  0.3-  0.3-    180509 850  0.0   0.2-
    180507 G96  0.3+  0.3-    180507 L01  0.1+  0.5-    180509 850  0.4-  0.2-
    180507 691  0.2+  0.2+    180508 J95  0.1+  0.3-    180509 850  0.4-  0.4-
    180507 691  0.1+  0.3+    180508 J95  0.2+  0.4-    180509 850  0.5-  0.2-
    180507 691  0.0   0.1+    180508 J95  0.1+  0.1-    180509 850  0.1-  0.2+
    180507 K61  0.3-  0.1+    180508 711  0.1+  0.3+    180509 I52  0.0   0.2-
    180507 K61  0.3-  0.1+    180508 711 (1.3+  2.4+)   180509 I52  0.2-  0.2-
    180507 K61  0.3-  0.0     180508 711  0.3+  0.3+    180509 I52  0.1-  0.2-
    180507 K61  0.5-  0.0     180508 I52  0.1+  0.2-    180509 I52  0.2-  0.0
    180507 C47  0.2+  0.7+    180508 I52  0.1+  0.3-    180509 711  0.4+  0.1-
    180507 C47  0.2+  0.5+    180508 I52  0.2-  0.2-    180509 711  0.2+  0.0
    180507 C47  0.4+  0.1+    180508 I52  0.1+  0.2-    180509 711  0.3+  0.1-
    180507 C47  0.2-  0.2-    180508 K88  0.2-  0.0     180509 P93  0.9+  0.1+
    180507 A17  0.2+  0.3-    180508 K88  0.1-  0.1+    180509 P93  0.5+  0.4-
    180507 A17  0.0   0.2-    180508 K88  0.1+  0.2+    180509 P93  0.2-  0.3-
    180507 A17  0.3+  0.2-    180508 K88  0.1-  0.1-    180509 P93  0.4+  0.7-
    
    Ephemeris:
    2018 JX                  a,e,i = 1.23, 0.26, 21                  q = 0.9166
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 04 09    16 18 21.0 +32 42 23   0.2816  1.1674   119.8    48.1    22.7
    ...
    2018 04 24    16 25 46.4 +33 44 23   0.1683  1.1058   122.8    49.9    21.5
    ...
    2018 05 02    16 25 21.1 +32 51 55   0.1081  1.0737   125.2    50.1    20.5
    ...
    2018 05 08    16 20 22.0 +29 48 06   0.06323 1.0503   129.3    48.1    19.2
    2018 05 09    16 18 34.8 +28 43 07   0.05581 1.0465   130.5    47.2    18.9
    2018 05 10    16 16 14.7 +27 16 40   0.04842 1.0428   132.1    45.9    18.6
    ...
    2018 05 16    14 48 45.0 -34 33 32   0.01022 1.0207   161.9    17.9    14.3
    ...
    2018 05 24    04 58 40.5 -47 20 16   0.05843 0.9933    69.2   107.7    21.1
    ...
    2018 06 08    04 42 22.9 -40 06 02   0.1679  0.9508    63.1   107.9    23.4
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-J31
    

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