[Iaude] MPEC T253: 2020 XS [a=1.29,e=0.38,i=51.4,H=21.18]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Sun Oct 15 10:16:27 EDT 2023


M.P.E.C. 2023-T253                             Issued 2023 October 15, 14:15 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 XS                                     


                           Revision to MPEC 2020-X37                            

Additional Observations:
     K20X00S 1C2017 12 14.13334 00 37 35.20 +21 17 31.5                VET253G96
     K20X00S 1C2017 12 14.13900 00 37 36.60 +21 17 05.4                VET253G96
     K20X00S 1C2017 12 14.14467 00 37 38.10 +21 16 42.0                VET253G96
     K20X00S 0C2023 10 13.63113508 24 45.602+49 08 39.72         22.38GVET253T14
     K20X00S 0C2023 10 13.63234708 24 45.457+49 08 37.73         22.49GVET253T14
     K20X00S 0C2023 10 13.63355808 24 45.305+49 08 35.74         22.29GVET253T14

Observer details:
G96 Mt. Lemmon Survey.  Observer D. C. Fuls.  Measurers B. Gray, D. Rankin, F.
    C. Shelly.  1.5-m reflector + 10K CCD.
T14 Canada-France-Hawaii Telescope, Maunakea.  Observer L. Wells.  Measurer D.
    J. Tholen.  3.6-m f/4.1 reflector + 1024 x 2306 pixels Megacam.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
171214 G96 0.16+ 0.05+    231013 T14 0.06+ 0.11+    MPO740956   -0.10 days

Orbital elements:
2020 XS                                                  Earth MOID = 0.0786 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
M  32.44696              (2000.0)            P               Q                  
n   0.66990749     Peri.   61.15404     +0.31050915     +0.62286536             
a   1.2935786      Node   246.68580     -0.87721157     +0.47875579             
e   0.3838170      Incl.   51.43609     +0.36617473     +0.61873390             
P   1.47           H   21.18          G   0.15           U   1                  
Residuals in seconds of arc
171214 G96  0.7+  0.7-    201205 H36  0.8+  0.2-    201214 807  0.2-  0.1-
171214 G96  0.5-  1.1-    201205 H36  0.2+  0.4-    201214 807  0.6-  0.1-
171214 G96  0.4-  1.1+    201205 H36  0.5+  0.1-    201214 V06  0.2-  0.0
201121 G96  0.0   0.9-    201205 691  0.7-  0.4-    201214 V06  0.1+  0.1+
201121 G96  0.1+  0.5-    201205 691  1.0-  0.7-    201214 V06  0.0   0.2+
201204 G96  0.3+  0.3-    201206 I52  0.4+  0.1-    201214 V06  0.0   0.3+
201204 G96  0.3+  0.2-    201206 I52  0.2+  0.0     201217 V06  0.3+  0.2+
201204 G96  0.3+  0.1-    201206 I52  0.2-  0.2+    201217 V06  0.0   0.0
201204 G96  0.0   0.2-    201206 I52  0.9-  1.6+    201217 V06  0.2-  0.2-
201204 291  0.1-  0.2-    201207 I52  0.1-  0.3+    201217 V06  0.3+  0.0
201204 291  0.1+  0.2-    201207 I52  0.2-  0.4+    201221 291  0.1-  0.3+
201204 291  0.1+  0.1-    201207 I52  0.1+  0.2+    201221 291  0.3-  0.0
201204 I52  0.1-  0.7+    201207 I52  0.1-  0.1+    201221 291  0.5+  0.6+
201204 I52  0.6+  0.5+    201208 F51  0.1+  0.1+    201221 V06  0.2+  0.1-
201205 H21  0.7+  0.1-    201208 F51  0.1+  0.2+    201221 V06  0.1-  0.0
201205 H21  0.9+  0.1-    201208 F51  0.1-  0.2-    201221 V06  0.1-  0.2+
201205 I52  0.2+  0.0     201210 807  0.1-  0.3-    201221 V06  0.4+  0.2+
201205 I52  0.4-  0.1-    201210 807  0.4-  0.1-    231013 T14  0.0   0.2+
201205 I52  0.0   0.7-    201210 807  0.1-  0.1-    231013 T14  0.0   0.2+
201205 I52  0.5+  0.2-    201214 807  0.2-  0.1-    231013 T14  0.0   0.2+

Ephemeris:
2020 XS                  a,e,i = 1.29, 0.38, 51                  q = 0.7971
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2023 09 15    09 07 58.7 +59 48 08   0.8665  0.9800    62.6    65.7    23.1
...
2023 09 30    08 47 06.6 +54 45 24   0.7929  1.0722    72.3    62.9    23.1
...
2023 10 08    08 34 52.7 +51 37 09   0.7376  1.1224    78.9    60.9    22.9
...
2023 10 14    08 24 01.6 +48 58 17   0.6911  1.1600    84.7    58.9    22.8
2023 10 15    08 22 01.4 +48 29 52   0.6830  1.1662    85.7    58.5    22.8
2023 10 16    08 19 57.3 +48 00 48   0.6749  1.1724    86.8    58.1    22.8
...
2023 10 22    08 06 02.0 +44 50 27   0.6254  1.2094    93.7    55.2    22.6
...
2023 10 30    07 42 42.8 +39 38 49   0.5602  1.2578   104.7    49.8    22.3
...
2023 11 14    06 42 24.2 +25 16 57   0.4663  1.3442   131.4    33.5    21.6

A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-T253




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