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  • MPEC 2019-B84 : 2018 GM4

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    M.P.E.C. 2019-B84                                Issued 2019 Jan. 26, 00:21 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 GM4
    
                              Revision to MPEC 2018-G118
    
    Additional Observations:
         K18G04M  C2011 08 24.43740723 05 46.282-14 06 22.94         23.0 GVEB084F51
         K18G04M  C2011 08 24.45140623 05 45.189-14 06 38.30         23.3 GVEB084F51
         K18G04M  C2011 08 24.46537023 05 44.117-14 06 53.63         22.2 GVEB084F51
         K18G04M  C2011 08 24.47934623 05 43.030-14 07 09.21         22.4 GVEB084F51
         K18G04M  C2016 01 09.22446 02 39 45.539-13 57 45.37         21.9 wLEB084F51
         K18G04M  C2016 01 09.24569 02 39 46.389-13 57 07.44         22.0 wLEB084F51
         K18G04M  C2016 01 09.25628 02 39 46.802-13 56 48.57         21.8 wLEB084F51
         K18G04M  C2016 05 24.34840411 12 04.101+30 25 54.02         22.2 GVEB084F51
         K18G04M  C2016 05 30.31244011 33 07.821+27 55 16.69         23.0 GVEB084F51
         K18G04M  C2016 05 30.33691811 33 12.709+27 54 38.71         22.1 GVEB084F51
         K18G04M  C2016 05 30.34914811 33 15.178+27 54 19.15         22.6 GVEB084F51
         K18G04M  C2018 05 25.55392016 15 19.955+18 04 23.74         22.1 GVEB084F51
         K18G04M  C2018 06 13.41452715 52 52.559+12 27 41.19         22.2 GVEB084F51
         K18G04M  C2018 06 13.43927915 52 51.250+12 27 09.53         22.2 GVEB084F51
         K18G04M  C2018 06 13.45177615 52 50.591+12 26 54.23         22.5 GVEB084F51
         K18G04M  C2018 07 05.30497515 46 12.258+04 26 27.68         23.2 GVEB084F51
         K18G04M  C2018 07 05.31701715 46 12.333+04 26 12.10         23.2 GVEB084F51
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
        E. Magnier, A. Schultz, M. Willman, B. Gibson, T. Goggia, N. Primak.
        Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk,
        K. Chambers, L. Denneau, H. Flewelling, E. Lilly, E. Magnier, C. Waters.
        1.8-m Ritchey-Chretien + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    110824 F51 35.6-  6.0-    180705 F51  0.1+  0.2-    MPO457150   -0.0041 day
    
    Orbital elements:
    2018 GM4                                                 Earth MOID = 0.0848 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M 244.47840              (2000.0)            P               Q
    n   0.52700820     Peri.    0.11858     -0.77277506     -0.61711006
    a   1.5179512      Node   140.48844     +0.58211545     -0.78226237
    e   0.2943289      Incl.   13.47939     +0.25290376     -0.08509268
    P   1.87           H   21.3           G   0.15           U   1
    Residuals in seconds of arc
    110824 F51  0.1-  0.1+    180413 H21  1.1-  0.3+    180517 H21  0.6+  0.1+
    110824 F51  0.2-  0.2+    180415 711  0.1-  0.3+    180517 H21  0.9+  0.1+
    110824 F51  0.0   0.2+    180415 711  0.3-  0.5+    180517 H21  1.0+  0.3+
    110824 F51  0.0   0.1+    180415 711  0.0   0.0     180522 H21  0.2-  0.4+
    160109 F51  0.0   0.3+    180421 691  0.3+  0.3+    180522 H21  0.6+  0.2-
    160109 F51  0.1+  0.4+    180421 691  0.2+  0.1+    180522 H21  0.3+  0.4-
    160109 F51  0.0   0.3+    180421 691  0.1+  0.2+    180523 H21  0.1+  0.3-
    160524 F51  0.1+  0.3+    180505 711  0.1-  0.3+    180523 H21  0.2+  0.2-
    160530 F51  0.0   0.2-    180505 711  0.6-  0.3+    180523 H21  0.2+  0.2-
    160530 F51  0.1+  0.2+    180505 711  1.0-  0.2+    180524 H21  0.3+  0.1-
    160530 F51  0.4+  0.2-    180509 T12  0.0   0.0     180524 H21  0.2+  0.1-
    180411 G96  0.3+  0.1+    180509 T12  0.0   0.1-    180524 H21  0.1+  0.1-
    180411 G96  0.2+  0.4-    180510 711  0.4-  0.3-    180525 H21  0.3+  0.8-
    180411 G96  1.0+  0.3-    180510 711  0.1+  0.2-    180525 H21  0.3+  0.6-
    180411 G96  0.7+  0.1+    180510 711  0.0   0.7-    180525 H21  0.2+  0.8-
    180411 G96  0.1+  0.3+    180513 H21  0.4+  0.4+    180525 F51  0.2-  0.1+
    180411 G96  0.3-  0.3-    180513 H21  0.3-  0.0     180604 H21  0.2-  0.7+
    180411 G96  0.5-  0.8+    180513 H21  0.8-  0.5+    180604 H21  0.1-  1.1+
    180411 G96  0.9-  2.1+    180514 H21  0.1+  0.2-    180604 H21  0.4-  0.9+
    180412 G96  0.2+  0.4-    180514 H21  0.4+  0.0     180613 F51  0.1-  0.1+
    180412 G96  0.5-  0.5-    180514 H21  0.0   0.3+    180613 F51  0.0   0.1-
    180412 G96  0.0   0.7-    180515 291  0.4+  0.2+    180613 F51  0.0   0.5+
    180413 H21  0.8-  0.4-    180515 291  0.3+  0.2+    180705 F51  0.0   0.1-
    180413 H21  1.1-  0.1+    180515 291  0.4+  0.1+    180705 F51  0.2+  0.0
    
    Ephemeris:
    2018 GM4                 a,e,i = 1.52, 0.29, 13                  q = 1.0712
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 12 27    20 33 37.4 -18 51 12   2.7399  1.9647    31.1    15.0    25.8
    ...
    2019 01 11    21 06 03.1 -17 27 47   2.8228  1.9617    23.6    11.6    25.7
    ...
    2019 01 19    21 23 16.8 -16 33 54   2.8561  1.9580    19.7     9.7    25.7
    ...
    2019 01 25    21 36 09.6 -15 49 37   2.8760  1.9543    16.8     8.4    25.6
    2019 01 26    21 38 18.2 -15 41 56   2.8789  1.9536    16.3     8.1    25.6
    2019 01 27    21 40 26.8 -15 34 10   2.8817  1.9529    15.8     7.9    25.6
    ...
    2019 02 02    21 53 17.1 -14 45 50   2.8958  1.9481    13.0     6.5    25.6
    ...
    2019 02 10    22 10 21.6 -13 37 06   2.9078  1.9405     9.3     4.7    25.5
    ...
    2019 02 25    22 42 15.1 -11 16 59   2.9093  1.9224     3.5     1.8    25.3
    
    A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-B84
    

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