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  • MPEC 2016-P18 : 2015 XW261

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    M.P.E.C. 2016-P18                                Issued 2016 Aug. 4, 10:43 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
    
                                      2015 XW261
    
                              Revision to MPEC 2015-X152
    
    Additional Observations:
         K15XQ1W 2C2016 07 29.51882200 07 23.916+49 49 44.56         23.2 RtEP018568
         K15XQ1W 2C2016 07 29.52982300 07 23.300+49 50 00.03         23.3 RtEP018568
         K15XQ1W 2C2016 07 30.53751600 06 29.946+50 13 05.05         23.4 RtEP018568
         K15XQ1W 2C2016 07 30.54630900 06 29.411+50 13 17.16         23.4 RtEP018568
         K15XQ1W 2C2016 07 30.55644000 06 28.810+50 13 30.99         23.4 RtEP018568
    
    Observer details:
    568 Mauna Kea.  Observers D. Fohring, D. Hung, D. J. Tholen.  Measurer
        D. J. Tholen.  2.24-m University of Hawaii reflector.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    160729 568  0.8-  0.6+    160730 568  0.7-  0.6+    MPO369296   -0.00004 day
    
    Orbital elements:
    2015 XW261                                               Earth MOID = 0.1134 AU
    Epoch 2016 July 31.0 TT = JDT 2457600.5                 MPC
    M 100.19436              (2000.0)            P               Q
    n   0.70640515     Peri.  289.39617     -0.81984032     +0.28775452
    a   1.2486292      Node   269.95162     -0.11832133     -0.93102808
    e   0.4670243      Incl.   29.67204     -0.56023380     -0.22446393
    P   1.40           H   21.4           G   0.15           U   2
    Residuals in seconds of arc
    151210 G96  0.4+  0.3+    151217 H21  0.0   0.1-    151231 807  0.3+  0.2+
    151210 G96  0.0   0.3+    151217 H21  0.2+  0.2-    151231 807  0.2+  0.1+
    151210 G96  0.3+  0.4+    151217 H21  0.1+  0.1-    151231 807  0.4+  0.2+
    151210 G96  0.3+  0.4+    151217 H21  0.3+  0.0     151231 807  0.4+  0.3+
    151210 H01  0.1+  0.2-    151217 H21  0.1-  0.1+    151231 807  0.3+  0.4+
    151210 G96  0.1+  0.1+    151217 H21  0.1+  0.4+    151231 926  0.2+  0.1-
    151210 G96  0.1+  0.0     151217 H21  0.0   0.3+    151231 926  0.4+  0.0
    151210 G96  0.0   0.2+    151217 I52  0.1+  0.2+    151231 926  0.3+  0.3+
    151210 G96  0.1+  0.2+    151217 I52  0.7+  0.8+    160101 926  0.3-  0.1+
    151210 H01  0.0   0.1-    151217 I52  0.2-  0.0     160101 926  0.1-  0.1-
    151210 G96  0.0   0.0     151217 I52  0.1-  0.2-    160101 926  0.0   0.2+
    151210 G96  0.2+  0.1+    151217 926  0.4+  0.0     160101 246  0.0   0.0
    151210 H01  0.1+  0.2-    151217 926  1.2+  0.4+    160101 246  0.8+  0.4-
    151210 I52  0.0   0.1+    151217 926  0.0   0.5+    160101 246  0.3+  0.2-
    151210 I52  0.3-  0.2+    151218 I52  0.3+  0.1+    160101 246  0.2+  0.1+
    151210 H01  0.0   0.1-    151218 I52  0.1+  0.2+    160101 246  0.6+  0.8+
    151210 I52  0.3-  0.0     151218 I52  0.1+  0.2+    160101 246  0.1-  0.4-
    151210 I52  0.1-  0.0     151218 I52  0.2+  0.2+    160101 246  0.4-  0.1+
    151210 104  0.2-  0.0     151219 H21  0.1+  0.0     160101 246  0.0   0.2-
    151210 104  0.3-  0.4+    151219 H21  0.1-  0.0     160103 807  0.0   0.1-
    151210 104  0.0   0.2-    151219 H21  0.0   0.1-    160103 807  0.1-  0.4+
    151210 246  0.2-  1.2-    151219 H21  0.0   0.1+    160103 807  0.0   0.1-
    151210 246  0.9-  0.9-    151219 H21  0.0   0.2+    160103 807  0.1-  0.1-
    151210 246  0.8-  1.0+    151219 H21  0.0   0.3+    160103 807  0.0   0.1-
    151210 246  1.3-  0.3-    151219 H21  0.2+  0.2+    160103 H21  0.3+  0.2+
    151210 246  0.3-  0.9-    151219 H21  0.0   0.3+    160103 H21  0.1+  0.1-
    151211 H01  0.1-  0.0     151219 H21  0.2-  0.1+    160103 H21  0.0   0.0
    151211 H01  0.2-  0.0     151219 H21  0.0   0.0     160103 H21  0.0   0.1-
    151211 H01  0.3-  0.1-    151219 H21  0.0   0.0     160103 H21  0.0   0.0
    151211 H01  0.1-  0.0     151219 H21  0.3+  0.1+    160103 H21  0.2+  0.0
    151211 926  0.3+  0.1-    151220 H21  0.2-  0.3-    160103 H21  0.2+  0.0
    151211 926  0.3+  0.1+    151220 H21  0.5-  0.3-    160103 H21  0.0   0.1-
    151211 926  0.2+  0.3-    151220 H21  0.4-  0.6-    160103 I52  0.0   0.1+
    151212 C77  0.7-  0.4-    151220 H21  0.3-  0.2-    160103 I52  0.2-  0.1+
    151212 C77  0.9-  0.4-    151220 H21  0.2-  0.2-    160103 I52  0.6-  0.7-
    151212 C77  0.3-  0.2+    151220 H21  0.3-  0.1-    160103 I52  0.5-  0.3-
    151212 595  0.2-  0.2-    151220 H21  0.6-  0.4-    160107 807  0.1+  0.0
    151212 595  0.5+  0.2-    151220 H21  0.3-  0.2-    160107 807  0.1+  0.0
    151215 926  0.0   0.2-    151220 H21  0.2-  0.4-    160107 807  0.2+  0.3+
    151215 926  0.0   0.3-    151220 H21  0.1-  0.3-    160107 807  0.2-  0.1+
    151215 926  0.2+  0.6-    151220 H21  0.5-  0.4-    160107 807  0.0   0.0
    151216 H21  0.0   0.1-    151221 926  0.4+  0.1-    160109 807  0.0   0.0
    151216 H21  0.1-  0.1+    151221 926  0.1-  0.6+    160109 807  0.2-  0.1-
    151216 H21  0.1+  0.1+    151221 926  0.3-  0.1+    160109 807  0.0   0.1-
    151216 H21  0.2-  0.1+    151226 H21  0.1+  0.2+    160109 807  0.1-  0.1-
    151216 H21  0.1-  0.0     151226 H21  0.2-  0.1+    160109 807  0.1-  0.0
    151216 H21  0.0   0.0     151226 H21  0.2-  0.0     160112 926  0.1+  0.1+
    151216 H21  0.1-  0.0     151226 H21  0.1-  0.0     160112 926  0.3-  0.1+
    151216 H21  0.0   0.1-    151226 H21  0.2-  0.0     160112 926  0.7-  0.3+
    151216 H21  0.1+  0.2-    151226 H21  0.2-  0.1-    160116 807  0.3-  0.1-
    151216 H21  0.1-  0.0     151226 H21  0.3-  0.3+    160116 807  0.3+  0.8-
    151216 H21  0.1-  0.1+    151226 H21  0.0   0.3+    160116 807  0.3+  0.5-
    151216 H21  0.1+  0.1-    151226 H21  0.1+  0.2+    160116 807  0.3+  0.4-
    151216 H21  0.0   0.2-    151226 H21  0.1+  0.1-    160116 807  0.2+  0.2-
    151217 H21  0.1-  0.2+    151230 807  0.1-  0.3-    160729 568  0.0   0.0
    151217 H21  0.1+  0.1+    151230 807  0.1+  0.1+    160729 568  0.1-  0.1+
    151217 H21  0.1+  0.0     151230 807  0.0   0.1+    160730 568  0.0   0.0
    151217 H21  0.3+  0.3+    151230 807  0.2+  0.1+    160730 568  0.0   0.0
    151217 H21  0.1+  0.1+    151230 807  0.3+  0.2+    160730 568  0.1+  0.0
    
    Ephemeris:
    2015 XW261               a,e,i = 1.25, 0.47, 30                  q = 0.6655
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2016 07 05    00 10 47.1 +38 59 01   1.1010  1.4226    84.3    45.3    24.1
    ...
    2016 07 20    00 12 30.2 +45 54 58   1.0777  1.5078    92.1    42.3    24.1
    ...
    2016 07 28    00 08 35.9 +49 14 10   1.0628  1.5490    96.4    40.7    24.1
    ...
    2016 08 03    00 02 53.2 +51 29 12   1.0512  1.5780    99.6    39.4    24.1
    2016 08 04    00 01 40.8 +51 50 15   1.0493  1.5827   100.1    39.1    24.1
    2016 08 05    00 00 23.8 +52 10 50   1.0474  1.5873   100.7    38.9    24.1
    ...
    2016 08 11    23 51 04.9 +54 03 28   1.0362  1.6141   103.9    37.6    24.0
    ...
    2016 08 19    23 34 23.6 +55 59 04   1.0230  1.6474   108.1    35.7    24.0
    ...
    2016 09 03    22 53 10.0 +57 15 46   1.0074  1.7020   115.2    32.4    23.9
    
    A. U. Tomatic                (C) Copyright 2016 MPC           M.P.E.C. 2016-P18
    

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