[Iaude] MPEC X119: 2008 XA2 [a=2.39,e=0.61,i=2.9,H=21.5]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Fri Dec 13 22:23:42 EST 2019


M.P.E.C. 2019-X119                            Issued 2019 December 14, 03:21 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2008 XA2                                    


                           Revision to MPEC 2008-X43                            

Additional Observations:
     K08X02A  C2019 12 06.09569 23 23 47.30 +01 06 30.5          20.5 GVEX119G96
     K08X02A  C2019 12 06.10142 23 23 50.33 +01 06 56.4          21.0 GVEX119G96
     K08X02A  C2019 12 06.10716 23 23 53.37 +01 07 21.6          21.1 GVEX119G96
     K08X02A  C2019 12 06.11289 23 23 56.46 +01 07 47.1          20.5 GVEX119G96
     K08X02A  C2019 12 06.14094 23 24 11.45 +01 09 51.9          21.1 GVEX119G96
     K08X02A  C2019 12 06.14170 23 24 11.84 +01 09 55.3          20.8 GVEX119G96
     K08X02A  C2019 12 06.14245 23 24 12.21 +01 09 59.2          21.2 GVEX119G96
     K08X02A  C2019 12 06.14320 23 24 12.63 +01 10 02.1          20.5 GVEX119G96
     K08X02A  C2019 12 06.23037 23 24 59.30 +01 16 29.0          20.9 GVEX119G96
     K08X02A  C2019 12 06.23112 23 24 59.77 +01 16 33.1          20.3 GVEX119G96
     K08X02A  C2019 12 06.23187 23 25 00.14 +01 16 35.3                VEX119G96
     K08X02A |C2019 12 07.09324 23 32 49.51 +02 20 46.7          20.5 VuEX119807
     K08X02A |C2019 12 07.09825 23 32 52.16 +02 21 09.5          20.4 VuEX119807
     K08X02A |C2019 12 07.10340 23 32 54.92 +02 21 32.2          20.1 VuEX119807

Observer details:
807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes.  
    0.61-m f/6.5 astrograph + CCD.
G96 Mt. Lemmon Survey.  Observer G. J. Leonard.  Measurers E. J. Christensen, 
   G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. 
   Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman,
    F. C. Shelly, K. W. Wierzchos.  1.5-m reflector + 10K CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
191206 G96   79+   26+    191207 807   80+   27+    MPO151118    +127 days

Orbital elements:
2008 XA2                                            PHA, Earth MOID = 0.0075 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5                  Bell
M  56.93529              (2000.0)            P               Q
n   0.26755517     Peri.  334.45928     +0.96933221     -0.24358309
a   2.3852129      Node    39.68321     +0.23332320     +0.87052374
e   0.6124647      Incl.    2.92587     +0.07717093     +0.42761630
P   3.68           H   21.5           G   0.15           U   3
Residuals in seconds of arc
081204 704  0.1+  0.4+    081206 130  0.0   0.7-    081213 H55  0.2+  0.3+
081204 704  0.9-  0.8-    081206 130  0.1+  0.4-    081213 H55  0.3-  0.3-
081204 704  0.4+  0.4-    081207 H45  0.2-  0.2-    081219 704 (0.1-  2.1+)
081204 704  0.4+  0.1+    081207 H45  0.1-  0.1-    081219 704  0.1+  0.9+
081204 704  0.1-  0.4-    081207 H45  0.3-  0.2-    081219 704  1.4-  0.2+
081205 H55  0.1-  0.0     081207 H45  0.1-  0.1+    081219 704  0.2+  0.2-
081205 H55  0.1-  0.0     081207 H45  0.1-  0.5-    081225 448  0.3+  0.5-
081205 H55  0.2-  0.1-    081207 H45  0.3-  0.2-    081225 448  0.2+  0.3-
081205 G96  0.1+  0.1-    081207 H45  0.2-  0.0     081225 448  0.4+  0.3+
081205 G96  0.1-  0.1-    081207 704  0.7+  0.7+    081230 291  0.1-  0.3-
081205 G96  0.1+  0.1-    081207 704  0.4+  0.2+    081230 291  0.1+  0.5-
081205 G96  0.3-  0.1-    081207 704  0.1-  0.3+    081230 291  0.1-  0.2-
081205 854  0.2+  0.2+    081207 704  0.0   0.2+    191206 G96  0.1+  0.3-
081205 854  0.1-  0.1+    081207 704  0.3+  0.4+    191206 G96  0.2-  0.1+
081205 854 (2.1-  1.7-)   081207 204  0.5-  0.4+    191206 G96  0.5-  0.2-
081205 B18  0.5-  0.0     081207 204  0.1-  0.1-    191206 G96  0.1+  0.2-
081205 B18  0.3-  0.2-    081207 204  0.2+  0.3-    191206 G96  0.5+  0.1-
081205 B18  0.1-  0.1-    081208 560  0.2+  0.6+    191206 G96  0.3+  0.1-
081206 704  0.2+  0.5+    081208 560  0.0   0.4+    191206 G96  0.2-  0.5+
081206 704  0.2+  0.0     081208 560  0.2-  0.1-    191206 G96  0.1+  0.1+
081206 704  0.1+  0.5+    081211 H55  0.3+  0.0     191206 G96  0.3-  0.2-
081206 704  0.1+  1.1+    081211 H55  0.2-  0.0     191206 G96  0.7+  0.6+
081206 587  0.6+  0.0     081211 H55  0.4+  0.1-    191206 G96  0.2+  0.6-
081206 587  0.4+  0.4+    081211 H55  0.2-  0.2-    191207 807  0.2+  0.6-
081206 587  0.7+  0.2+    081211 H55  0.1-  0.2-    191207 807  0.2-  0.1+
081206 130  0.2-  0.0     081213 H55  0.3-  0.2-    191207 807  0.1-  0.1+
081206 130  0.1+  0.5-    081213 H55  0.5-  0.1-

Ephemeris:
2008 XA2                 a,e,i = 2.39, 0.61, 3                   q = 0.9244
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2019 11 14    20 24 50.5 -20 19 21   0.3013  0.9443    72.6    89.7    21.9
...
2019 11 29    22 19 45.0 -07 30 00   0.2402  1.0066    87.9    78.3    21.2
...
2019 12 07    23 31 59.9 +02 13 33   0.2382  1.0535   100.1    67.0    20.9
...
2019 12 13    00 24 53.4 +09 09 36   0.2544  1.0935   108.8    58.4    20.8
2019 12 14    00 33 16.9 +10 12 01   0.2585  1.1005   110.1    57.1    20.8
2019 12 15    00 41 30.9 +11 11 59   0.2630  1.1076   111.4    55.8    20.8
...
2019 12 21    01 27 12.5 +16 17 34   0.2975  1.1517   117.5    49.3    21.0
...
2019 12 29    02 17 47.3 +20 52 24   0.3601  1.2141   122.2    43.3    21.4
...
2020 01 13    03 26 56.1 +25 08 30   0.5148  1.3382   123.5    37.8    22.2

A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-X119




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