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  • MPEC 2023-X184 : 2020 XC3

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    M.P.E.C. 2023-X184                            Issued 2023 December 10, 23:24 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
    
                                    2020 XC3                                 
    
    
                               Revision to MPEC 2020-X112                           
    
    Additional Observations:
         K20X03C  C2023 12 07.29125301 53 39.557-22 12 26.55         18.37wXEX184F52
         K20X03C  C2023 12 07.30290401 53 40.988-22 07 15.68         18.23wXEX184F52
         K20X03C  C2023 12 07.32616801 53 43.849-21 56 52.46         18.28wXEX184F52
         K20X03C KC2023 12 07.39303601 53 58.056-21 24 11.70         17.2 GVEX184474
         K20X03C KC2023 12 07.39562401 53 58.342-21 23 01.57         18.3 GVEX184474
         K20X03C KC2023 12 07.39756001 53 58.637-21 22 09.44         18.1 GVEX184474
         K20X03C KC2023 12 07.39885301 53 58.817-21 21 34.31         18.0 GVEX184474
         K20X03C  C2023 12 07.57077901 54 31.222-20 06 15.80         18.2 GVEX184O85
         K20X03C  C2023 12 07.57333401 54 31.560-20 05 03.88         18.6 GVEX184O85
         K20X03C  C2023 12 07.57588901 54 31.900-20 03 52.80         18.9 GVEX184O85
         K20X03C  C2023 12 07.57844601 54 32.250-20 02 42.87         18.2 GVEX184O85
         K20X03C  C2023 12 07.58100101 54 32.584-20 01 31.93         18.4 GVEX184O85
         K20X03C  C2023 12 07.58355601 54 32.895-20 00 20.79         18.6 GVEX184O85
         K20X03C 1C2023 12 09.21201301 59 54.233-06 16 44.62         17.71GVEX184703
         K20X03C 1C2023 12 09.21608601 59 54.834-06 14 31.99         17.98GVEX184703
         K20X03C 1C2023 12 09.21812301 59 55.115-06 13 25.00         17.72GVEX184703
         K20X03C mC2023 12 09.26386302 00 02.034-05 48 31.32         17.72GVEX184I52
         K20X03C mC2023 12 09.26404002 00 02.092-05 48 25.85         17.50GVEX184I52
         K20X03C mC2023 12 09.26421402 00 02.120-05 48 19.76         17.77GVEX184I52
         K20X03C mC2023 12 09.26438302 00 02.167-05 48 14.44         17.47GVEX184I52
         K20X03C mC2023 12 09.29908302 00 07.690-05 29 17.30         18.01GVEX184I52
         K20X03C mC2023 12 09.29925302 00 07.704-05 29 12.08         17.93GVEX184I52
         K20X03C mC2023 12 09.29943302 00 07.751-05 29 06.11         17.67GVEX184I52
         K20X03C mC2023 12 09.29960302 00 07.758-05 29 00.71         17.69GVEX184I52
         K20X03C KC2023 12 09.61732102 01 14.19 -02 34 13.0          18.4 GVEX184900
         K20X03C KC2023 12 09.62526502 01 15.61 -02 29 48.0                VEX184900
         K20X03C KC2023 12 09.63320802 01 16.90 -02 25 23.5          17.6 GVEX184900
         K20X03C KC2023 12 09.76669502 01 56.765-01 11 40.67         17.8 GVEX184J95
         K20X03C KC2023 12 09.76733702 01 56.928-01 11 19.14         17.9 GVEX184J95
         K20X03C KC2023 12 09.76801402 01 57.005-01 10 57.04         17.7 GVEX184J95
         K20X03C KC2023 12 09.76878302 01 57.156-01 10 30.43         17.4 GVEX184J95
         K20X03C KB2023 12 09.85175302 02 11.51 -00 23 53.1          17.4 GXEX184958
         K20X03C KB2023 12 09.85486402 02 12.02 -00 22 08.6          17.6 GXEX184958
         K20X03C KB2023 12 09.85866902 02 12.65 -00 20 00.8          17.6 GXEX184958
         K20X03C KC2023 12 09.88098302 02 16.356-00 07 47.28         17.7 GVEX184J95
         K20X03C KC2023 12 09.88373902 02 16.850-00 06 14.22         17.8 GVEX184J95
         K20X03C KC2023 12 09.88701302 02 17.378-00 04 24.24         17.8 GVEX184J95
         K20X03C KC2023 12 09.88912802 02 17.719-00 03 13.00         17.7 GVEX184J95
         K20X03C KC2023 12 09.89099702 02 18.058-00 02 10.32         17.8 GVEX184J95
         K20X03C KC2023 12 09.92375002 02 23.503+00 16 11.21         17.4 GVEX184Z80
         K20X03C KC2023 12 09.93670602 02 25.728+00 23 27.06         17.8 GVEX184Z80
         K20X03C |C2023 12 10.11145002 03 03.410+02 05 22.30         17.8 VuEX184807
         K20X03C |C2023 12 10.11555002 03 04.010+02 07 41.20         17.9 VuEX184807
         K20X03C |C2023 12 10.11965002 03 04.720+02 10 00.00         17.8 VuEX184807
         K20X03C KB2023 12 10.19017 02 03 20.17 +02 46 31.9          17.3 GXEX184H36
         K20X03C KB2023 12 10.19438 02 03 20.95 +02 48 54.0          17.5 GVEX184734
         K20X03C KB2023 12 10.19928 02 03 21.68 +02 51 40.2          17.9 GXEX184H36
         K20X03C KB2023 12 10.19976 02 03 21.85 +02 51 55.9          17.6 GVEX184734
         K20X03C KB2023 12 10.20384 02 03 22.52 +02 54 14.0          17.6 GXEX184H36
         K20X03C KB2023 12 10.20502 02 03 22.72 +02 54 53.8          17.7 GVEX184734
         K20X03C KB2023 12 10.21539 02 03 24.46 +03 00 44.3          17.7 GVEX184734
         K20X03C  C2023 12 10.32824002 03 51.583+04 05 13.63         18.11cVEX184T05
         K20X03C  C2023 12 10.33147902 03 52.087+04 07 04.94         17.85cVEX184T05
         K20X03C  C2023 12 10.33783502 03 53.028+04 10 38.96         18.44cVEX184T05
         K20X03C  C2023 12 10.35801802 03 56.167+04 22 03.79         17.58cVEX184T05
         K20X03C KC2023 12 10.55751702 04 39.89 +06 14 03.3          17.5 GVEX184900
         K20X03C KC2023 12 10.56545802 04 41.24 +06 18 31.9          17.7 GVEX184900
         K20X03C KC2023 12 10.57339802 04 42.58 +06 23 00.3          17.9 GVEX184900
    
    Observer details:
    474 Mount John Observatory, Lake Tekapo.  Observers A. C. Gilmore, P. M.
        Kilmartin.  Measurer P. M. Kilmartin.  1.0-m f/7.7 Reflector + CCD.
    703 Catalina Sky Survey.  Observer R. A. Kowalski.  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.  0.68-m Schmidt + 10K CCD.
    734 Farpoint Observatory, Eskridge.  Observers D. Cromer, G. Hug, D. Goodin,
        R. Valentine.  Measurer D. Cromer.  0.69-m f/3.54 reflector + CMO.
    807 Cerro Tololo Observatory, La Serena.  Observers T. Linder, R. Holmes, L.
        Horn.  0.61-m f/11 Ritchey-Chretien + CCD.
    900 Moriyama.  Observer Y. Ikari.  0.26-m f/7.0 reflector + CCD.
    958 Observatoire de Dax.  Observer P. Dupouy.  0.50-m f/4.5 Reflector + CMO.
    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.
    H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.2-m f/5.2 reflector +
        CMO.
    I52 Steward Observatory, Mt. Lemmon Station.  Observer K. W. Wierzchos.
        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.  1.0-m
        prime focus + CCD.
    J95 Great Shefford.  Observer P. Birtwhistle.  0.41-m f/6.3 Schmidt-Cassegrain
        + CCD.
    O85 LiShan Observatory, Lintong.  Observers Y. Yu, K. Tang, A. Pomazan.
        0.50-m f/7.0 Cassegrain + CCD.
    T05 ATLAS-HKO, Haleakala.  Observers L. Denneau, R. Siverd, J. Tonry, H.
        Weiland.  Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
        J. Robinson, R. Siverd, J. Tonry, H. Weiland.  0.5-m Reflector + CCD.
    Z80 Northolt Branch Observatory.  Observer G. Wells.  Measurers G. Wells, D.
        Bamberger.  0.25-m f/8.0 Ritchey-Chretien + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
    231207 F52   40-   19-    231210 900   45-   30-    MPO740956   -1.99 days
    
    Orbital elements:
    2020 XC3                                                 Earth MOID = 0.0344 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M 336.34988              (2000.0)            P               Q                  
    n   0.32955607     Peri.  339.02373     +0.54090209     -0.76269269             
    a   2.0757888      Node    76.58361     +0.81424394     +0.36918290             
    e   0.5186312      Incl.   21.37835     +0.21078838     +0.53104034             
    P   2.99           H   22.54          G   0.15           U   0                  
    Residuals in seconds of arc
    201209 G96  0.0   0.2-    201216 I52  0.1-  0.3-    231209 I52  0.3-  0.2-
    201209 G96  0.1+  0.2+    201217 I52  0.0   0.3-    231209 I52  0.2+  0.5-
    201209 G96  0.3+  0.0     201217 I52  0.1-  0.2-    231209 I52  0.2+  0.1-
    201209 G96  0.1-  0.3-    201217 I52  0.1+  0.1-    231209 I52  0.5+  0.4-
    201209 I52  0.3-  0.3+    201217 I52  0.3-  0.3-    231209 I52  0.2+  0.0
    201209 I52  0.5-  0.7+    201219 I52  0.2-  0.3-    231209 I52  0.0   0.4-
    201209 I52  0.2+  0.4+    201219 I52  0.1-  0.0     231209 I52  0.2+  0.3-
    201209 I52  0.1-  0.2-    201219 I52  0.2+  0.3-    231209 I52  0.1-  0.5-
    201209 474  0.0   0.2+    201219 I52  0.0   0.2-    231209 900  0.3+  0.3-
    201209 474  0.5-  0.3-    201220 I52  0.5-  0.0     231209 900  1.2+  0.0
    201210 807  0.4-  0.1+    201220 I52  0.0   0.2-    231209 900  0.0   0.2-
    201210 807  0.3+  0.1-    201220 I52  0.3+  0.4+    231209 J95  0.4-  0.2-
    201210 807 (0.5+  0.8-)   201220 I52  0.0   0.2-    231209 J95  0.3+  0.2-
    201210 F52  0.1-  0.1-    201222 I52 (0.2+  1.4+)   231209 J95  0.3-  0.7-
    201210 F52  0.0   0.1+    201222 I52  0.2-  0.0     231209 J95  0.1-  0.1+
    201210 F52 (0.1+  0.5+)   201222 I52  0.3-  0.1-    231209 958  0.0   0.0
    201210 F52 (0.3-  0.4-)   201222 I52  0.3-  0.1-    231209 958  0.1+  0.0
    201210 N88  1.4+  0.3-    201223 H21  0.4+  0.5-    231209 958  0.4+  0.0
    201210 N88  0.2-  0.8+    201223 H21  0.3+  0.3-    231209 J95  0.0   0.6-
    201210 W34  0.2-  0.5+    201223 H21  0.4+  0.1-    231209 J95  0.4+  0.2-
    201211 W34  0.1+  0.5+    201223 H21  0.3+  0.1-    231209 J95  0.1+  0.2-
    201211 W34  0.8-  0.3-    201224 I52  0.5-  0.4-    231209 J95  0.2-  0.1-
    201211 H21  0.2-  0.2+    201224 I52  0.2+  0.1+    231209 J95  0.2+  0.2-
    201211 H21  0.2-  0.1+    201224 I52  0.2-  0.2-    231209 Z80  0.1+  0.2-
    201211 H21  0.4-  0.1+    201224 I52 (0.3-  1.1-)   231209 Z80  0.1-  0.3-
    201214 807  0.2-  0.3+    201226 I52  0.0   0.3+    231210 807  0.5+  0.3-
    201214 807  0.1+  0.3+    201226 I52  0.1+  0.2-    231210 807  0.1-  0.1+
    201214 807  0.0   0.1+    201226 I52  0.2+  0.3-    231210 807 (0.9+  0.4+)
    201214 I52  0.8-  0.3-    231207 F52  0.0   0.1-    231210 H36  0.5-  0.4+
    201214 I52  0.1+  0.2+    231207 F52  0.0   0.1-    231210 734  0.1+  0.4+
    201214 I52  0.5-  0.1+    231207 F52  0.0   0.2+    231210 H36  0.4-  0.7+
    201214 I52  0.4-  0.1-    231207 474  0.6+  0.1-    231210 734  0.3+  0.3+
    201215 807  0.0   0.1-    231207 474  0.4-  0.0     231210 H36  0.9+  0.2+
    201215 807  0.2+  0.1-    231207 474  0.0   0.3-    231210 734  0.3+  0.3+
    201215 807  0.2-  0.0     231207 474  0.0   0.1-    231210 734  0.4+  0.1+
    201215 F51  0.1+  0.3+    231207 O85  0.1+  0.8-    231210 T05  0.2-  1.7-
    201215 F51  0.0   0.1+    231207 O85  0.1+  0.4+    231210 T05  0.1-  0.1-
    201215 F51  0.1+  0.1+    231207 O85  0.1+  0.7+    231210 T05  0.5-  1.3-
    201215 F51  0.0   0.2+    231207 O85  0.3+  0.3-    231210 T05  0.0   0.1+
    201215 C51  0.9+  1.1-    231207 O85  0.2+  0.2-    231210 900  0.1-  0.2-
    201215 C51  1.0+  1.2-    231207 O85  0.2-  0.1+    231210 900  0.2+  0.2-
    201216 I52  0.1+  0.5-    231209 703  0.4+  0.3-    231210 900  0.1+  0.3-
    201216 I52  0.3-  0.2-    231209 703  0.4+  0.5-
    201216 I52  0.3+  0.7-    231209 703  0.1+  0.1+
    
    Ephemeris:
    2020 XC3                 a,e,i = 2.08, 0.52, 21                  q = 0.9992
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 11 10    01 02 25.8 -72 50 35   0.2479  1.0136    88.2    77.6    22.3
    ...
    2023 11 25    01 23 59.1 -62 52 22   0.1377  0.9993    91.1    81.0    21.1
    ...
    2023 12 03    01 41 31.1 -45 23 14   0.08059 1.0058   102.0    73.5    19.7
    ...
    2023 12 09    01 59 12.7 -08 09 38   0.05259 1.0168   126.0    51.6    18.1
    2023 12 10    02 02 42.1 +01 00 44   0.05135 1.0192   130.7    47.1    17.9
    2023 12 11    02 06 22.6 +10 23 43   0.05149 1.0217   134.6    43.3    17.8
    ...
    2023 12 17    02 33 02.8 +51 48 12   0.07604 1.0394   135.1    42.0    18.7
    ...
    2023 12 25    03 23 11.7 +70 38 28   0.1348  1.0700   126.9    47.3    20.1
    ...
    2024 01 09    05 20 25.4 +77 31 06   0.2589  1.1451   123.0    46.1    21.7
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-X184
    


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