• MPC Preparation (Info)

  • MPEC 2018-P12 : 2017 XJ61

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    M.P.E.C. 2018-P12                                Issued 2018 Aug. 6, 11:33 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 XJ61
    
                               Revision to MPEC 2017-Y10
    
    Additional Observations:
         K17X61J KC2018 08 03.53439423 50 55.605-19 16 40.25         22.21GVEP012T12
         K17X61J  C2018 08 04.54652823 49 35.944-19 21 59.43         22.15GVEP012T12
         K17X61J  C2018 08 04.55049723 49 35.613-19 22 00.77         22.13GVEP012T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observer D. Fohring.
        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 (or two decimals in degrees), reference and Delta-T
    180803 T12 0.04+ 0.04+    180804 T12 0.04+ 0.04+    MPO431403   +0.011 day
    
    Orbital elements:
    2017 XJ61                                                Earth MOID = 0.1301 AU
    Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
    M   6.97712              (2000.0)            P               Q
    n   0.21598445     Peri.  205.02989     -0.88085667     +0.47295770
    a   2.7511930      Node     3.40264     -0.35713303     -0.63612549
    e   0.7070896      Incl.   19.75748     -0.31072097     -0.60963545
    P   4.56           H   18.6           G   0.15           U   4
    Residuals in seconds of arc
    171213 G96  0.1+  0.1-    171214 I52  0.1-  0.2-    171219 G96  0.0   0.0
    171213 G96  0.1+  0.2-    171214 926  0.1-  0.2+    171219 G96  0.1-  0.1+
    171213 G96  0.2-  0.1+    171214 G96  0.0   0.2+    171219 G96  0.6-  0.2+
    171213 G96  0.4-  1.3-    171214 G96  0.0   0.0     171219 G96  0.2-  0.1-
    171213 G96  0.2-  0.1+    171214 G96  0.1-  0.4+    171229 691  0.1+  0.7+
    171213 G96  0.6+  0.4-    171214 G96  0.4-  0.1+    171229 691  0.3+  0.2-
    171213 G96  1.0+  0.2-    171215 I52  0.4+  0.4+    180105 926  0.4+  0.1-
    171213 G96  0.1-  0.1-    171215 I52  0.1+  0.2-    180105 926  0.5-  1.0-
    171214 033  0.1+  0.1-    171215 I52  0.4-  0.2-    180105 926  0.1+  0.3+
    171214 033  0.1+  0.2-    171216 926  0.2+  0.4+    180117 J04  0.3+  0.1-
    171214 033  0.2-  0.1+    171216 H01  0.0   0.0     180117 J04  0.2-  0.0
    171214 H01  0.1-  0.0     171216 I52  0.2-  0.3-    180117 J04  0.3-  0.0
    171214 H01  0.1-  0.1+    171216 926  0.4-  0.0     180118 J04  0.1-  0.0
    171214 H01  0.1-  0.0     171216 I52  0.1-  0.2-    180118 J04  0.1+  0.1-
    171214 H01  0.0   0.0     171216 I52  0.1+  0.1-    180118 J04  0.1-  0.3+
    171214 926  0.1+  0.1+    171216 H01  0.0   0.0     180803 T12  0.1-  0.1+
    171214 I52  0.3+  0.0     171216 I52  0.2-  0.3-    180804 T12  0.1-  0.1+
    171214 I52  0.3+  0.2+    171216 926  0.4+  0.6+    180804 T12  0.1-  0.0
    171214 926  0.0   0.0     171216 H01  0.2-  0.0
    171214 I52  0.1-  0.1-    171216 H01  0.0   0.1+
    
    Ephemeris:
    2017 XJ61                a,e,i = 2.75, 0.71, 20                  q = 0.8059
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2018 07 07    00 12 43.6 -17 22 52   1.4350  1.9981   107.9    29.0    22.2
    ...
    2018 07 22    00 04 26.7 -18 14 05   1.3981  2.1351   123.6    23.4    22.1
    ...
    2018 07 30    23 56 27.7 -18 52 58   1.3880  2.2061   132.7    19.8    22.0
    ...
    2018 08 05    23 48 59.7 -19 24 18   1.3873  2.2583   139.7    16.9    22.0
    2018 08 06    23 47 38.4 -19 29 33   1.3879  2.2670   140.9    16.4    22.0
    2018 08 07    23 46 15.3 -19 34 46   1.3887  2.2756   142.0    15.9    22.0
    ...
    2018 08 13    23 37 23.8 -20 05 05   1.3984  2.3268   149.1    12.9    21.9
    ...
    2018 08 21    23 24 31.7 -20 39 55   1.4256  2.3937   158.0     9.1    21.9
    ...
    2018 09 05    22 59 51.8 -21 15 30   1.5261  2.5156   165.7     5.7    22.0
    
    A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-P12
    

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