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  • MPEC 2023-U278 : 2020 SB

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    M.P.E.C. 2023-U278                             Issued 2023 October 29, 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@CFA.HARVARD.EDU
                URL https://www.minorplanetcenter.net/    ISSN 1523-6714
    
                                     2020 SB                                 
    
    
                               Revision to MPEC 2020-S55                            
    
    Additional Observations:
         K20S00B $C2023 10 16.83432018 18 47.714-14 34 45.68         20.8 GVEU278J04
         K20S00B $C2023 10 16.85593918 18 53.386-14 34 40.36         20.8 GVEU278J04
         K20S00B 0C2023 10 21.21815318 37 51.866-14 12 28.38         21.76GVEU278T12
    
    Observer details:
    J04 ESA Optical Ground Station, Tenerife.  Observers P. Ruiz, F. Ocana, M.
        Micheli, L. Conversi.  Measurers F. Ocana, M. Micheli, R. Kresken.
        1.0-m f/4.4 reflector + CCD.
    T12 University of Hawaii 88-inch telescope, Maunakea.  Observer D. J. Tholen.
        2.24-m f/10.1 reflector + 2112 x 2112 pixels STA1600 10k CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    231016 J04 60.0+ 43.2+    231021 T12 54.6+ 42.6+    E2020-UP6   +0.03 days
    
    Orbital elements:
    2020 SB                                                  Earth MOID = 0.0893 AU
    Epoch 2023 Sept. 13.0 TT = JDT 2460200.5                Veres                   
    M 103.82478              (2000.0)            P               Q                  
    n   1.59455329     Peri.  249.83224     -0.99473523     +0.04411014             
    a   0.7256213      Node   292.60405     +0.00007711     -0.90229988             
    e   0.3616292      Incl.    5.75046     -0.10247838     -0.42884639             
    P   0.62           H   20.31          G   0.15           U   2                  
    Residuals in seconds of arc
    200916 703  0.2+  0.0     200917 Z99  0.0   0.1-    200928 703  0.4+  0.8+
    200916 703  0.9+  0.9-    200917 Z43  0.1-  0.2-    200928 703  0.0   0.6-
    200916 703  0.6+  0.0     200917 Z99  0.1-  0.0     200928 703  0.6+  0.0
    200916 I52  0.1+  0.0     200917 Z99  0.4-  0.2-    200928 K87  0.2-  0.2-
    200916 I52  0.0   0.2+    200917 Z43  0.4-  0.2+    200928 K87  0.1+  0.2-
    200916 I52  0.0   0.0     200917 203  0.1-  0.2+    200928 K87  0.2+  0.1-
    200916 I52  0.2-  0.0     200917 203  0.1+  0.2+    200930 I52  0.3-  0.4+
    200916 T05  0.1+  0.4-    200917 Z80  0.5-  0.6-    200930 I52  0.3-  0.3+
    200916 T05  0.3-  0.3+    200917 J69  0.5+  0.1+    200930 I52  0.1+  0.4-
    200916 T05  0.2-  0.1+    200917 Z80  0.5-  0.8-    200930 I52  0.2+  0.1-
    200916 T05  0.1+  0.1+    200917 J69  0.2+  0.0     201004 I52  0.2-  0.2+
    200916 204  0.1-  0.2+    200917 J69  0.6-  0.6+    201004 I52  0.1+  0.1-
    200916 204  0.2+  0.0     200917 Z80  0.2-  0.6+    201004 I52  0.2+  0.0
    200916 C95  0.2+  0.2+    200917 J69  0.0   0.2-    201004 I52  0.2-  0.4-
    200916 204  0.1-  0.0     200917 Z80  0.3+  0.5+    201005 I52  0.1-  0.0
    200916 C95  0.2-  0.1-    200917 Z80  0.0   0.1+    201005 I52  0.0   0.2+
    200916 595  0.0   0.0     200918 H21  0.2-  0.1+    201005 I52  0.1-  0.8+
    200916 C95  0.2+  0.4-    200918 H36  0.2+  0.8-    201005 I52 (0.1-  1.3+)
    200916 104  0.3-  0.5-    200918 H21  0.1-  0.2-    201006 G96  0.0   0.1+
    200916 958 (0.5+  0.8+)   200918 H21  0.2-  0.2+    201006 G96  0.0   0.1+
    200916 958  0.2+  0.3+    200918 H36  0.1+  0.2-    201006 G96  0.1+  0.0
    200916 958  0.2+  0.1-    200918 H21  0.0   0.1+    201006 I52  0.1+  0.2+
    200916 104  0.3-  0.6-    200918 H21  0.1-  0.2+    201006 I52  0.2+  0.1-
    200916 595  0.3+  0.0     200918 H36  0.0   0.2-    201006 I52  0.1-  0.4-
    200916 104  0.1-  0.5-    200918 711  0.1+  0.5-    201006 G96  0.1+  0.1+
    200916 K38  0.3+  0.1+    200918 711  0.0   0.2-    201006 I52  0.2-  0.1-
    200916 L04  0.4+  0.5-    200918 711  0.8+  0.5+    201007 703  0.0   0.0
    200916 K38  0.0   0.1-    200918 A17  0.3+  0.1-    201007 703  0.8-  0.2+
    200916 I93  0.4+  0.3+    200918 A17  0.1-  0.1+    201007 703  0.3-  0.7-
    200916 L04  0.2+  0.1-    200918 A17  0.4-  0.2+    201007 703  0.3-  0.0
    200916 K38  0.1-  0.2+    200919 703  0.5+  0.3+    201007 T08  0.2-  0.0
    200916 I93  0.3+  0.0     200919 703  0.5-  0.8+    201007 T08  0.1-  0.1+
    200916 L04  0.6-  0.2+    200919 703  0.6-  1.1+    201007 T08  0.0   0.1+
    200916 K38  0.2-  0.0     200919 703  1.4-  0.6+    201007 T08  0.2+  0.1-
    200916 I93  0.2+  0.2+    200920 K87  0.2+  0.3-    201009 I52  0.2-  0.0
    200916 K63  0.1+  0.1+    200920 K87  0.2+  0.3-    201009 I52  0.1-  0.0
    200916 K63  0.2+  0.2-    200920 K87  0.3+  0.0     201009 I52  0.0   0.0
    200917 H36  0.5+  0.1+    200921 W33  0.1-  0.4+    201009 I52  0.1-  0.3-
    200917 H36  0.5+  0.2-    200921 W33  0.1+  0.1+    201009 T05  0.0   0.1+
    200917 H36  0.6+  0.2-    200921 W33  0.1+  0.2+    201009 T05 (1.2-  0.8-)
    200917 711  0.0   0.4-    200921 K87  0.0   0.2+    201009 T05  0.6-  0.5-
    200917 711  0.2-  0.6-    200921 K87  0.2+  0.3-    201009 T05  0.0   0.7+
    200917 711  0.2-  0.2-    200921 K87  0.1-  0.3-    201010 K87  0.0   0.2-
    200917 I52  0.0   0.1+    200922 703  0.0   0.1+    201010 K87  0.2+  0.1+
    200917 I52  0.1-  0.2+    200922 703  0.8+  0.1-    201010 K87  0.0   0.5+
    200917 I52  0.3+  0.2+    200922 703  0.2-  0.1-    201011 T08  0.1+  0.1-
    200917 I52  0.1-  0.2-    200922 I52  0.0   0.1+    201011 T08  0.3-  0.1-
    200917 L01  0.1+  0.1+    200922 I52  0.2+  0.0     201011 T08  0.1+  0.0
    200917 L01  0.0   0.0     200922 I52  0.4+  0.2+    201011 T08  0.2+  0.1+
    200917 L01  0.1+  0.0     200922 703  0.3-  0.2-    201013 G96  0.0   0.0
    200917 L01  0.0   0.0     200923 K87  0.3+  0.1+    201013 G96  0.0   0.0
    200917 L01  0.1+  0.0     200923 K87  0.3+  0.2-    201013 G96  0.1+  0.0
    200917 A17  0.2-  0.2-    200923 K87  0.1+  0.2+    201013 G96  0.5+  0.1+
    200917 K87  0.4+  0.8+    200924 G96  0.0   0.2+    201017 T05  0.7+  0.4-
    200917 A17  0.0   0.0     200924 G96  0.1-  0.1-    201017 T05  0.2-  0.3-
    200917 K87  0.0   0.3+    200924 G96  0.3+  0.1-    201017 T05  0.1+  0.3+
    200917 K62  0.1+  0.1+    200924 G96  0.1+  0.0     201017 T05  0.5-  0.5-
    200917 K87  0.2+  0.1+    200924 I52  0.1+  0.0     201018 I52  0.3-  0.2+
    200917 K62  0.1-  0.1-    200924 I52  0.0   0.1+    201018 I52  0.1+  0.1-
    200917 K87  0.1+  0.4-    200924 I52  0.3+  0.2+    201018 I52  0.0   0.2+
    200917 A17  0.0   0.1-    200924 I52  0.1-  0.1-    201019 D29  0.7-  0.7+
    200917 K62  0.3+  0.7-    200924 G34  0.1-  0.1-    201019 D29  0.5-  0.1-
    200917 K87  0.4+  0.3-    200924 G34  0.4+  0.1+    201028 I52  0.2-  0.4-
    200917 K62  0.0   0.3+    200924 G34  0.1+  0.2+    201028 I52 (1.0-  0.4+)
    200917 K87  0.0   0.3+    200924 G34  0.1+  0.3+    201028 I52  0.1-  0.1+
    200917 J95  0.3-  0.2+    200924 G34  0.1+  0.5-    201028 I52  0.3+  0.0
    200917 J95  0.3-  0.0     200924 G34  0.7+  0.3-    231016 J04  0.3-  0.2+
    200917 J95  0.2-  0.2+    200925 703  0.1+  0.1+    231016 J04 (0.8-  0.6-)
    200917 J95  0.1-  0.1-    200925 703  0.1-  0.2-    231021 T12  0.1+  0.0
    200917 Z99  0.2-  0.2+    200925 703  0.1-  0.1+
    200917 Z99  0.0   0.0     200925 703  0.7+  0.1-
    
    Ephemeris:
    2020 SB                  a,e,i = 0.73, 0.36, 6                   q = 0.4632
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2023 09 29    16 48 10.1 -14 59 25   0.5004  0.9326    67.4    82.8    21.6
    ...
    2023 10 14    18 05 50.7 -14 46 23   0.5383  0.9726    71.6    76.7    21.6
    ...
    2023 10 22    18 41 09.2 -14 07 56   0.5638  0.9838    72.3    74.6    21.6
    ...
    2023 10 28    19 05 14.8 -13 30 21   0.5832  0.9876    72.3    73.5    21.7
    2023 10 29    19 09 05.1 -13 23 32   0.5864  0.9879    72.3    73.3    21.7
    2023 10 30    19 12 52.4 -13 16 35   0.5896  0.9880    72.2    73.2    21.7
    ...
    2023 11 05    19 34 40.9 -12 32 32   0.6080  0.9865    71.6    72.6    21.7
    ...
    2023 11 13    20 01 36.2 -11 28 53   0.6298  0.9784    70.4    72.3    21.8
    ...
    2023 11 28    20 46 48.4 -09 21 32   0.6572  0.9443    66.7    73.6    21.8
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-U278
    


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