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  • MPEC 2018-G115: 2018 GN4

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    M.P.E.C. 2018-G115                               Issued 2018 Apr. 15, 16:34 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 GN4
    
    Observations:
         K18G04N* C2018 04 12.20786 11 20 32.75 +10 08 28.3          20.1 GUEG115G96
         K18G04N  C2018 04 12.21419 11 20 33.12 +10 07 56.6          20.6 GUEG115G96
         K18G04N  C2018 04 12.22055 11 20 33.49 +10 07 24.7          20.8 GUEG115G96
         K18G04N  C2018 04 12.22698 11 20 33.86 +10 06 52.3          20.4 GUEG115G96
         K18G04N  C2018 04 12.29019 11 20 37.53 +10 01 32.3          20.5 GUEG115I52
         K18G04N  C2018 04 12.29072 11 20 37.56 +10 01 28.7          19.8 GUEG115I52
         K18G04N  C2018 04 12.29125 11 20 37.60 +10 01 26.3          20.2 GUEG115I52
         K18G04N KC2018 04 12.40772511 20 47.78 +09 52 38.5          20.1 RUEG115474
         K18G04N KC2018 04 12.41008311 20 47.95 +09 52 26.5          20.3 RUEG115474
         K18G04N KC2018 04 12.41338611 20 48.12 +09 52 10.0          20.5 RUEG115474
         K18G04N  C2018 04 13.14776 11 21 42.32 +08 51 53.9          20.5 GUEG115I52
         K18G04N  C2018 04 13.14852 11 21 42.40 +08 51 50.0          20.5 GUEG115I52
         K18G04N  C2018 04 13.14928 11 21 42.44 +08 51 45.6          20.2 GUEG115I52
         K18G04N KC2018 04 13.82317 11 22 29.77 +08 00 04.8          20.1 VSEG115L01
         K18G04N KC2018 04 13.82565 11 22 29.90 +07 59 53.5          20.2 VSEG115L01
         K18G04N KC2018 04 13.82813 11 22 30.08 +07 59 42.9          20.3 VSEG115L01
         K18G04N |C2018 04 15.01951 11 23 52.71 +06 35 35.3          20.5 GUEG115807
         K18G04N |C2018 04 15.02268 11 23 52.89 +06 35 22.3          20.7 GUEG115807
         K18G04N |C2018 04 15.02629 11 23 53.07 +06 35 08.0          20.7 GUEG115807
    
    Observer details:
    474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore,
        P. M. Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 reflector + CCD.
    807 Cerro Tololo.  Observers T. Linder, R. Holmes.  0.61-m f/6.5 astrograph
        + CCD.
    G96 Mt. Lemmon Survey.  Observer 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.
        1.5-m reflector + 10K CCD.
    I52 Steward Observatory, Mt. Lemmon Station.  Observers J. A. Johnson,
        E. J. Christensen.  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.
    L01 Visnjan Observatory, Tican.  Observers K. Korlevic, G. Kervina.  Measurer
        K. Korlevic.  1.0-m f/2.9 reflector + CCD.
    
    Orbital elements:
    2018 GN4                                                 Earth MOID = 0.0192 AU
    Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
    M  31.90280              (2000.0)            P               Q
    n   0.59641155     Peri.   80.74181     -0.19473815     -0.97816376
    a   1.3977796      Node    20.91815     +0.80102504     -0.20132297
    e   0.4494190      Incl.   11.73465     +0.56607062     -0.05162087
    P   1.65           H   22.5           G   0.15           U   8
    Residuals in seconds of arc
    180412 G96  0.0   0.3-    180412 474  0.3-  0.3+    180413 L01  0.2-  0.0
    180412 G96  0.1+  0.1+    180412 474  0.1+  0.0     180413 L01  0.3+  0.5+
    180412 G96  0.2+  0.4+    180412 474  0.3-  0.0     180415 807  0.1+  0.1-
    180412 G96  0.1+  0.5+    180413 I52  0.7-  0.1+    180415 807  0.2+  0.2-
    180412 I52  0.2+  0.3+    180413 I52  0.1-  0.2-    180415 807  0.0   0.2+
    180412 I52  0.1+  0.6-    180413 I52  0.2-  1.0-
    180412 I52  0.3+  0.3-    180413 L01  0.0   0.3+
    
    Ephemeris:
    2018 GN4                 a,e,i = 1.40, 0.45, 12                  q = 0.7696
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 03 16    00 51 49.1 +68 48 20   0.1179  0.9643    71.8   101.6    21.5
    ...
    2018 03 31    10 54 38.8 +40 17 56   0.1076  1.0711   130.0    45.6    19.5
    ...
    2018 04 08    11 14 40.9 +17 13 14   0.1553  1.1296   143.4    31.9    20.1
    ...
    2018 04 14    11 22 41.4 +07 47 29   0.2023  1.1734   144.5    29.8    20.7
    2018 04 15    11 23 50.0 +06 36 34   0.2107  1.1807   144.3    29.7    20.8
    2018 04 16    11 24 56.9 +05 30 41   0.2193  1.1879   144.0    29.7    20.9
    ...
    2018 04 22    11 31 15.8 +00 17 14   0.2734  1.2312   141.6    30.4    21.4
    ...
    2018 04 30    11 39 28.1 -04 19 32   0.3515  1.2878   137.3    32.0    22.1
    ...
    2018 05 15    11 55 54.2 -09 32 04   0.5138  1.3896   128.4    34.7    23.2
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-G115
    

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