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  • MPEC 2018-U89 : 2016 LA9

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    M.P.E.C. 2018-U89                                Issued 2018 Oct. 30, 22:22 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
    
                                       2016 LA9
    
                               Revision to MPEC 2016-L64
    
    Additional Observations:
         K16L09A  C2018 08 02.28878214 08 26.126+03 19 55.62         22.34GVEU089T12
         K16L09A  C2018 08 14.26164514 32 28.926-06 24 24.84         22.52GVEU089T12
         K16L09A  C2018 08 14.26968914 32 29.926-06 24 47.74         22.57GVEU089T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. Fohring, D. Hung.
        Measurer D. J. Tholen.  2.24-m f/10.1 reflector + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    180802 T12  2.9+  4.0-    180814 T12  2.7+  4.6-    MPO386982   -0.0020 day
    
    Orbital elements:
    2016 LA9                                                 Earth MOID = 0.2199 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M 110.43887              (2000.0)            P               Q
    n   0.46364436     Peri.  182.32377     +0.21479680     +0.80912765
    a   1.6532787      Node   100.47538     -0.88685670     +0.39616685
    e   0.2519487      Incl.   33.79613     -0.40908133     -0.43400953
    P   2.13           H   20.4           G   0.15           U   2
    Residuals in seconds of arc
    160528 G96  0.0   0.3+    160613 H21  0.0   0.1+    160630 H21  0.1-  0.1-
    160528 G96  0.2-  0.6+    160615 H21  0.2-  0.1-    160702 703  1.0-  0.4+
    160528 G96  0.9+  0.8+    160615 H21  0.1-  0.5+    160702 703  0.3-  2.2+
    160606 G96  0.1+  0.0     160615 H21  0.3+  0.5+    160702 G96  0.0   0.1+
    160606 G96  0.3+  0.2+    160616 H21  0.2+  0.3+    160702 G96  0.7+  0.4+
    160606 G96  0.7+  0.4+    160616 H21  0.2+  0.3+    160702 G96  0.5-  0.3+
    160606 G96  0.1-  0.0     160616 H21  0.0   0.1+    160702 G96  0.1-  0.1-
    160606 G96  0.1+  0.0     160616 H21  0.0   0.0     160703 G45  0.0   0.0
    160606 G96  0.1+  0.1+    160616 H21  0.1-  0.0     160703 G45  0.3-  0.2-
    160606 G96  0.2+  0.0     160616 H21  0.0   0.3+    160703 G45  0.1+  0.0
    160606 G96  0.1+  0.0     160616 926  0.2-  0.2-    160703 G45  0.2+  0.2+
    160606 104  0.8+  0.2-    160616 926  0.2+  0.1+    160703 G45  0.2+  0.2+
    160606 104  0.1-  0.3-    160616 926  0.3+  0.2+    160703 G45  0.0   0.4-
    160606 104  0.7-  0.3-    160617 H21  0.1-  0.1-    160704 G45  0.5+  0.7-
    160607 754  0.3-  0.2-    160617 H21  0.3-  0.2+    160704 G45  0.3-  0.2+
    160607 754  0.4-  0.0     160617 H21  0.2+  0.2-    160704 G45  0.8-  1.1+
    160607 754  0.3-  0.3-    160618 H21  0.3+  0.5+    160704 G45  0.4-  0.6-
    160607 I52  0.1-  0.1+    160618 H21  0.5+  0.4+    160704 G45  0.3-  0.1-
    160607 I52  0.3-  0.0     160618 H21  0.4+  0.5+    160704 G45  0.5+  0.1-
    160607 I52  0.3+  0.0     160618 H21  0.6+  0.6+    160704 G45  0.4+  0.1-
    160607 I52  0.1+  0.1-    160619 H21  0.1-  0.1-    160704 G45  0.4-  0.2-
    160607 926  0.8+  0.4+    160619 H21  0.2-  0.2-    160704 G45  0.0   0.4-
    160607 926  0.3-  0.1-    160619 H21  0.2-  0.2-    160704 G45  0.1-  0.0
    160607 926  0.2+  0.4+    160619 H21  0.1-  0.2-    160704 G45  0.2+  0.1-
    160609 H21  0.0   0.4-    160619 705  0.0   0.2-    160704 G45  0.0   0.2-
    160609 H21  0.3-  0.4-    160619 705  0.0   0.2-    160704 G45  0.1+  0.0
    160609 H21  0.1-  0.3-    160619 705  0.2-  0.8-    160706 G45  0.4+  0.4+
    160609 H21  0.1-  0.4-    160620 F51  0.1-  0.1+    160706 G45  0.5+  0.9+
    160610 H45  0.9-  0.1+    160620 F51  0.1-  0.0     160706 G45  0.2+  0.1-
    160610 H45  0.5-  0.1+    160620 F51  0.0   0.1+    160706 G45  0.5-  0.3-
    160610 H45  0.1-  0.2+    160620 F51  0.0   0.2+    160706 G45  0.2-  0.1+
    160610 H45  0.2-  0.2-    160621 705  0.3+  0.2-    160706 G96  0.3-  0.1-
    160610 H45  0.1-  0.3-    160621 705  0.0   0.9-    160706 G96  0.1-  0.1+
    160610 H45  0.4-  0.3-    160621 705  0.3+  0.5+    160706 G96  0.2+  0.2-
    160611 H45  0.3+  0.2-    160623 H21  0.3-  0.1-    160706 F51  0.1-  0.2+
    160611 H45  0.1+  0.3-    160623 H21  0.2-  0.1-    160706 F51  0.1-  0.2-
    160611 H45  0.0   0.3-    160623 H21  0.5-  0.2+    160706 F51  0.8+  0.1+
    160611 H45  0.4-  0.5-    160624 204  0.3-  0.2+    160706 F51  0.2-  0.3-
    160611 H45  0.5-  0.8-    160624 204  0.2-  0.6-    160710 G45  0.1+  0.5+
    160611 H45  0.3-  0.6-    160624 204  0.1+  0.4-    160710 G45  0.7+  0.1-
    160611 705  0.0   0.3-    160625 H21  0.0   0.0     160710 G45  0.2-  0.0
    160611 705  0.2+  0.4-    160625 H21  0.0   0.2-    160710 G45  0.5-  0.6-
    160612 H21  0.2+  0.2+    160625 H21  0.3+  0.1+    160710 G45  0.6+  0.1+
    160612 H21  0.1-  0.2+    160626 H21  0.1+  0.1+    160710 G45  0.4-  0.4-
    160612 H21  0.0   0.2+    160626 H21  0.1-  0.0     160721 807  0.1+  0.0
    160612 G96  0.3+  0.0     160626 H21  0.0   0.2+    160721 807  0.1-  0.0
    160612 G96  0.0   0.1+    160628 H21  0.3-  0.1+    160721 807  0.2-  0.1-
    160612 G96  0.2+  0.2-    160628 H21  0.2-  0.1+    180802 T12  0.0   0.1+
    160612 G96  0.0   0.3-    160628 H21  0.4+  0.1-    180814 T12  0.1+  0.0
    160613 H21  0.4+  0.2+    160630 H21  0.1-  0.1-    180814 T12  0.0   0.0
    160613 H21  0.2+  0.0     160630 H21  0.2-  0.2-
    
    Ephemeris:
    2016 LA9                 a,e,i = 1.65, 0.25, 34                  q = 1.2367
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 09 30    16 38 28.7 -36 20 00   1.2365  1.2571    67.4    47.4    23.1
    ...
    2018 10 15    17 33 37.7 -42 05 38   1.3307  1.2823    65.0    44.8    23.3
    ...
    2018 10 23    18 06 10.9 -44 15 08   1.3812  1.2993    63.9    43.4    23.3
    ...
    2018 10 29    18 31 46.3 -45 25 43   1.4191  1.3134    63.1    42.4    23.4
    2018 10 30    18 36 07.0 -45 35 13   1.4254  1.3159    63.0    42.2    23.4
    2018 10 31    18 40 28.9 -45 44 04   1.4318  1.3184    62.8    42.1    23.4
    ...
    2018 11 06    19 07 00.7 -46 23 28   1.4697  1.3340    62.1    41.1    23.5
    ...
    2018 11 14    19 42 52.0 -46 39 44   1.5204  1.3563    61.2    39.7    23.5
    ...
    2018 11 29    20 48 55.4 -45 24 38   1.6164  1.4018    59.5    37.3    23.7
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-U89
    

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