[Iaude] MPEC X123: 2008 XP [a=1.96,e=0.35,i=10.6,H=21.2]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sat Dec 14 22:17:49 EST 2019


M.P.E.C. 2019-X123                            Issued 2019 December 15, 03:16 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2008 XP                                     


                           Revision to MPEC 2008-X31                            

Additional Observations:
     K08X00P  C2019 11 28.52203208 46 37.169+22 56 32.27         21.6 GVEX123F52
     K08X00P  C2019 11 28.53511808 46 39.608+22 56 43.20         21.5 GVEX123F52
     K08X00P  C2019 11 28.55143708 46 42.627+22 56 57.07         21.5 GVEX123F52
     K08X00P  C2019 12 07.53573409 15 21.244+25 10 27.83         21.50wUEX123F52
     K08X00P  C2019 12 07.54820309 15 23.504+25 10 39.97         21.24wUEX123F52
     K08X00P  C2019 12 07.56062809 15 25.743+25 10 52.12         21.66wUEX123F52
     K08X00P  C2019 12 10.49605909 24 39.110+25 58 50.52         21.0 GVEX123F51
     K08X00P  C2019 12 10.50831909 24 41.311+25 59 03.24         21.1 GVEX123F51
     K08X00P  C2019 12 10.53276709 24 45.701+25 59 28.33         20.8 GVEX123F51

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A. 
   Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R. 
   Wainscoat, R. Weryk.  1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala.  Observers J. Bulger, K. Chambers, T. Dukes, T. 
   Lowe, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. 
   Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau, J. 
   Fairlamb, H. Flewelling, C.-C. Lin, E. Magnier.  1.8-m Ritchey-Chretien + 
   CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
191128 F52 0.58+ 0.06+    191210 F51 0.62+ 0.15+    MPO154217   +0.35 days

Orbital elements:
2008 XP                                                  Earth MOID = 0.2957 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
M  57.14238              (2000.0)            P               Q
n   0.36037723     Peri.   30.55075     -0.26678245     -0.94710072
a   1.9556801      Node    75.42394     +0.84276991     -0.31905555
e   0.3532318      Incl.   10.62237     +0.46751042     +0.03469564
P   2.73           H   21.2           G   0.15           U   2
Residuals in seconds of arc
081201 691  0.6-  0.1-    081210 J95  0.4+  0.1+    090223 H55  0.1-  0.1+
081201 691  0.6-  0.3+    081211 H55  0.1-  0.3-    090223 H55  1.0-  0.1+
081201 691  0.3-  0.5-    081211 H55  0.0   0.1-    090223 H55  0.2+  0.4+
081201 291  0.5-  0.2-    081211 H55  0.3+  0.1-    191128 F52  0.0   0.1-
081201 291  0.6-  0.1-    081228 540  0.6+  0.3-    191128 F52  0.1+  0.2-
081201 291  0.6-  0.2-    081228 540  0.4-  0.1+    191128 F52  0.0   0.0
081202 291  0.4-  0.1-    081228 540  0.6+  0.1-    191207 F52  0.1+  0.1-
081202 291  0.5-  0.2-    081228 540  0.1-  0.2-    191207 F52  0.0   0.1-
081202 291  0.6-  0.1-    090131 H55  0.4+  0.3+    191207 F52  0.2-  0.1-
081205 H55  0.2-  0.0     090131 H55  0.0   0.2+    191210 F51  0.1+  0.1-
081205 H55  0.2-  0.1-    090131 H55  0.8-  0.3-    191210 F51  0.0   0.0
081205 H55  0.3-  0.1+    090203 G96 (0.2+  4.2+)   191210 F51  0.1-  0.1-
081205 H55  0.3-  0.6+    090203 G96 (0.2+  3.0+)
081209 J95  0.6+  0.4+    090203 G96 (0.0   3.3+)

Ephemeris:
2008 XP                  a,e,i = 1.96, 0.35, 11                  q = 1.2649
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2019 11 15    08 03 21.1 +20 13 35   0.5578  1.3138   113.3    43.8    22.2
...
2019 11 30    08 51 20.6 +23 17 04   0.4790  1.2841   118.2    42.6    21.8
...
2019 12 08    09 16 48.3 +25 17 53   0.4461  1.2736   121.0    41.5    21.6
...
2019 12 14    09 35 28.3 +26 58 46   0.4256  1.2684   123.2    40.5    21.5
2019 12 15    09 38 31.5 +27 16 23   0.4225  1.2678   123.6    40.3    21.4
2019 12 16    09 41 33.4 +27 34 13   0.4195  1.2672   123.9    40.1    21.4
...
2019 12 22    09 59 12.2 +29 25 27   0.4037  1.2650   126.3    38.8    21.3
...
2019 12 30    10 20 45.6 +32 02 43   0.3879  1.2659   129.5    36.8    21.1
...
2020 01 14    10 52 10.6 +37 03 09   0.3746  1.2785   135.7    32.5    21.0

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-X123




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