[Iaude] MPEC W89: 2020 XW4 [a=2.52,e=0.53,i=23.2,H=21.25]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Nov 22 09:20:44 EST 2023


M.P.E.C. 2023-W89                             Issued 2023 November 22, 14:19 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714

                                    2020 XW4                                    


                           Revision to MPEC 2020-X155                           

Additional Observations:
     K20X04W  C2016 11 27.57766 09 22 27.771+44 47 50.01         22.3 wLEW089F51
     K20X04W  C2016 11 27.59104 09 22 29.948+44 47 23.37         22.4 wLEW089F51
     K20X04W  C2016 11 27.61768 09 22 34.281+44 46 29.59         22.4 wLEW089F51
     K20X04W  C2017 01 03.61753310 26 10.200+04 04 01.46         20.83GVEW089F51
     K20X04W  C2017 01 03.62893510 26 10.416+04 02 52.81         21.02GVEW089F51
     K20X04W  C2017 01 03.64028810 26 10.650+04 01 44.75         20.76GVEW089F51
     K20X04W  C2017 01 03.65166910 26 10.864+04 00 36.18         21.02GVEW089F51

Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers B. Gibson, T. Goggia, S. Kahale, A.
    Schultz, M. Willman, J. Herman, T. Lowe, P. Minguez, I. Smith.  Measurers
    K. Chambers, S. Chastel, L. Denneau, H. Flewelling, M. Huber, E. Lilly, E.
    Magnier, R. Wainscoat, C. Waters, R. Weryk, T. de Boer, J. Fairlamb, H.
    Gao, C.-C. Lin, Y. Ramanjooloo.  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
161127 F51 0.05+ 0.08+    170103 F51 0.11+ 0.11+    E2021-B10   +0.06 days

Orbital elements:
2020 XW4                                                 Earth MOID = 0.2001 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M 239.18060              (2000.0)            P               Q                  
n   0.24622929     Peri.  192.80338     -0.55047676     -0.75003474             
a   2.5210197      Node   291.75125     +0.79654040     -0.34034844             
e   0.5327226      Incl.   23.24994     +0.24999745     -0.56710742             
P   4.00           H   21.25          G   0.15           U   0                  
Residuals in seconds of arc
161127 F51  0.2-  0.2-    201217 G96  0.0   0.1+    210110 I52  0.0   0.1-
161127 F51  0.2-  0.0     201217 G96  0.1+  0.2-    210111 F52  0.1-  0.1-
161127 F51  0.1-  0.1+    201217 G96  0.1-  0.0     210111 F52  0.1-  0.0
170103 F51  0.2+  0.0     201217 G96  0.4+  0.2+    210112 L01  0.1+  0.3+
170103 F51  0.1+  0.1-    201217 I52  0.0   0.1+    210112 L01  0.4-  0.2+
170103 F51  0.2+  0.1+    201217 I52  0.3+  0.2-    210112 L01  0.0   0.5+
170103 F51  0.1+  0.0     201217 I52  0.1-  0.2-    210112 L01  0.1+  0.3+
201209 F51  0.1+  0.1+    201217 I52  0.4+  0.4+    210112 L01  0.2-  0.1-
201209 F51  0.1+  0.2+    201218 I52  0.1-  0.2-    210113 G96  0.2+  0.1+
201209 F51  0.2+  0.1-    201221 I52  0.2+  0.3-    210113 G96  0.3-  0.2-
201209 F51  0.1+  0.1+    201221 I52  0.1-  0.0     210113 G96  0.0   0.2-
201210 F52  0.4+  0.1-    201221 I52  0.3+  0.1-    210113 G96  0.3-  0.0
201210 F52  0.3+  0.1+    201222 691  1.0+  0.8-    210115 F51  0.0   0.1-
201210 F52  0.0   0.0     201222 691  0.0   0.1+    210115 F51  0.0   0.1-
201212 J04  0.1+  0.3+    201226 G96  0.2-  0.0     210115 F51  0.0   0.0
201212 J04  0.1+  0.2+    201226 G96  0.1+  0.4+    210202 807  0.1+  0.0
201212 J04  0.3+  0.1-    201226 G96  0.5+  0.3-    210202 807  0.0   0.0
201213 L01  0.7-  0.2-    201226 G96  0.1-  0.2+    210202 807  0.1+  0.1+
201213 L01  0.7-  0.2+    201227 I52  0.1-  0.0     210205 807  0.6-  0.1-
201213 L01  0.3-  0.9+    201227 I52  0.7+  0.1-    210205 807  0.1+  0.2+
201213 033  0.3+  0.5-    201227 I52  0.2-  0.3+    210205 807  0.0   0.1-
201213 033  0.5-  0.2-    210106 I52  0.0   0.1+    210205 474  0.2+  1.4-
201213 033  0.0   0.4-    210106 I52  0.1-  0.0     210205 474  0.5+  0.3+
201216 I52  0.0   0.0     210106 I52  0.1+  0.2-    210205 474  0.7-  0.2+
201216 I52  0.2+  0.0     210106 I52  0.0   0.2-    210218 807  0.2+  0.4+
201216 I52  0.5-  0.6-    210107 807  0.0   0.0     210218 807  0.3+  0.3+
201216 V06  0.0   0.2+    210107 807  0.2+  0.2-    210218 807  0.5+  0.1+
201216 V06  0.4-  0.1-    210107 807  0.2-  0.2+    210318 807  0.2+  0.6-
201216 I52  0.2+  0.4+    210110 I52  0.4+  0.1+    210318 807  0.1-  0.2+
201216 V06  0.1-  0.3+    210110 I52  0.3-  0.1-    210318 807  0.1-  0.3+
201216 V06  0.1+  0.1-    210110 I52  0.1-  0.2-

Ephemeris:
2020 XW4                 a,e,i = 2.52, 0.53, 23                  q = 1.1780
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 10 23    20 40 22.2 -01 26 21   3.0837  3.4407   102.6    16.4    27.3
...
2023 11 07    20 44 37.3 -01 44 02   3.2595  3.3931    89.2    17.0    27.4
...
2023 11 15    20 48 28.8 -01 45 25   3.3525  3.3666    82.3    16.9    27.4
...
2023 11 21    20 52 01.4 -01 42 32   3.4205  3.3463    77.4    16.7    27.4
2023 11 22    20 52 39.8 -01 41 43   3.4316  3.3428    76.5    16.7    27.4
2023 11 23    20 53 19.1 -01 40 49   3.4426  3.3394    75.7    16.7    27.4
...
2023 11 29    20 57 31.4 -01 33 25   3.5072  3.3184    70.9    16.3    27.5
...
2023 12 07    21 03 49.2 -01 18 15   3.5884  3.2898    64.7    15.7    27.5
...
2023 12 22    21 17 28.5 -00 33 31   3.7212  3.2340    53.5    14.2    27.5

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-W89




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