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  • MPEC 2023-X135 : 2016 XD2

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    M.P.E.C. 2023-X135                             Issued 2023 December 7, 14:09 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets, routine data on comets and natural satellites,
             and occasional editorial announcements.  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 XD2                                 
    
    
                               Revision to MPEC 2016-X60                            
    
    Additional Observations:
         K16X02D 1C2023 12 04.49521607 10 13.620+15 15 55.62         19.86GVEX135G96
         K16X02D 1C2023 12 04.50038307 10 12.241+15 16 19.52         19.92GVEX135G96
         K16X02D 1C2023 12 04.50555507 10 10.830+15 16 44.22         19.91GVEX135G96
         K16X02D 1C2023 12 04.51071607 10 09.448+15 17 08.38         20.10GVEX135G96
         K16X02D  C2023 12 05.59259807 05 34.463+16 48 30.34         19.75GVEX135F52
         K16X02D  C2023 12 05.60430207 05 30.776+16 49 31.17         20.05GVEX135F52
         K16X02D  C2023 12 05.61603107 05 27.092+16 50 32.20         19.59GVEX135F52
    
    Observer details:
    F52 Pan-STARRS 2, Haleakala.  Observers J. Herman, T. Lowe, P. Minguez, A.
        Schultz, I. Smith.  Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
        Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
        Weryk.  1.8-m Ritchey-Chretien + CCD.
    G96 Mt. Lemmon Survey.  Observer J. K. Hogan.  Measurers E. C. Beshore, D.
        Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, J.
        K. Hogan, R. A. Kowalski, S. M. Larson, G. J. Leonard, 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 two decimals in degrees), reference and Delta-T
    231204 G96 0.20+ 0.02+    231205 F52 0.21+ 0.02+    E2023-R94   +0.02 days
    
    Orbital elements:
    2016 XD2                                                 Earth MOID = 0.0424 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M  99.30122              (2000.0)            P               Q                  
    n   1.26659179     Peri.  161.55279     -0.50369568     +0.85226923             
    a   0.8460154      Node    77.98725     -0.80965336     -0.40874844             
    e   0.2570729      Incl.    8.29828     -0.30125088     -0.32643815             
    P   0.78           H   23.95          G   0.15           U   1                  
    Residuals in seconds of arc
    161204 G96  0.2+  0.5-    161205 926  0.2+  0.0     161218 G96  0.2-  0.3+
    161204 G96  1.2+  1.0-    161205 691  0.6+  0.2-    161218 G96  0.4-  0.3+
    161204 G96  0.3+  0.0     161205 691 (0.1+  2.8-)   161218 G96  0.3-  0.5+
    161204 G96  0.2+  0.4+    161205 691  0.0   0.5-    161218 G96  1.1+  0.6+
    161204 G96  0.2+  0.5+    161205 I52  1.3-  0.9-    161218 G96  0.0   0.4+
    161204 G96  0.1-  0.3+    161205 I52  0.4-  0.3-    161219 H21  0.2+  0.1-
    161204 G96  0.3+  0.5+    161205 I52  0.4-  0.6-    161219 H21  0.2+  0.0
    161204 G96  0.2-  0.3+    161205 I52  0.3-  0.5+    161219 H21  0.0   0.1-
    161204 I52  0.7-  0.1-    161206 I52  0.6+  0.1-    161219 H21  0.1+  0.1-
    161204 I52  0.5-  0.0     161206 I52  0.0   0.3-    161219 H21  0.1+  0.1+
    161204 I52  0.2+  0.0     161206 I52  0.0   0.0     161219 H21  0.1-  0.0
    161204 I52  0.5-  0.1-    161206 I52  0.1-  0.2-    161219 H21  0.1-  0.1-
    161204 G96  1.0+  0.1+    161209 I52  0.4-  0.4-    161219 H21  0.1-  0.1-
    161204 G96  0.7-  1.0+    161209 I52  0.3-  0.4-    161220 H21  0.2+  0.0
    161204 G96  0.1-  0.3+    161209 I52  0.0   0.3-    161220 H21  0.1+  0.2-
    161204 G96  0.0   0.6+    161209 I52  0.3+  0.2-    161220 H21  0.1-  0.4-
    161204 I52  0.7-  0.5-    161212 705  0.1+  0.0     161220 H21  0.2+  0.4-
    161204 I52  0.4-  0.1-    161212 705  0.1+  1.1+    161221 H21  0.0   0.1-
    161204 I52  0.3-  0.3-    161212 705  0.1-  0.2+    161221 H21  0.3-  0.1-
    161204 I52  0.4+  0.6+    161213 204  0.0   0.1-    161221 H21  0.3-  0.1+
    161204 033  0.1+  0.1+    161213 204  0.4+  0.0     161221 H21  0.1-  0.0
    161204 033  0.1+  0.3-    161213 204  0.4+  0.1-    161221 H21  0.2-  0.1-
    161204 033  0.4+  0.0     161218 I52  0.1-  0.2-    161221 H21  0.1-  0.2+
    161205 033  0.3+  0.0     161218 I52  0.1-  0.1+    231204 G96  0.3-  0.3+
    161205 033  0.5+  0.1-    161218 I52  0.2-  0.1-    231204 G96  0.0   0.1-
    161205 033  0.3+  0.1+    161218 I52  0.0   0.3-    231204 G96  0.1-  0.2+
    161205 033  0.3+  0.1-    161218 926  0.4+  0.1+    231204 G96  0.1+  0.0
    161205 033  0.5+  0.1-    161218 926  0.0   0.1-    231205 F52  0.0   0.0
    161205 033  0.5+  0.1+    161218 G96  0.3-  0.3-    231205 F52  0.0   0.0
    161205 926  0.1+  0.0     161218 G96  0.0   0.1+    231205 F52  0.0   0.1+
    161205 926  0.0   0.2+    161218 G96  0.2+  0.1-
    
    Ephemeris:
    2016 XD2                 a,e,i = 0.85, 0.26, 8                   q = 0.6285
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 11 07    07 36 17.1 +00 52 50   0.1867  1.0609   107.0    63.3    22.7
    ...
    2023 11 22    07 35 25.3 +05 03 00   0.1275  1.0622   122.7    51.5    21.5
    ...
    2023 11 30    07 24 01.0 +10 19 05   0.09646 1.0566   134.9    41.4    20.6
    ...
    2023 12 06    07 03 44.0 +17 25 08   0.07510 1.0497   147.6    30.2    19.7
    2023 12 07    06 58 39.1 +19 00 28   0.07185 1.0483   150.2    27.9    19.6
    2023 12 08    06 52 53.4 +20 44 19   0.06872 1.0468   152.8    25.4    19.4
    ...
    2023 12 14    05 56 55.5 +34 18 41   0.05356 1.0366   166.5    12.8    18.4
    ...
    2023 12 22    03 00 35.6 +51 55 37   0.04890 1.0194   135.9    42.2    19.1
    ...
    2024 01 06    22 50 35.1 +41 11 43   0.08153 0.9761    82.6    92.7    21.7
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-X135
    


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