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  • MPEC 2023-B69 : 2020 BA11

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    M.P.E.C. 2023-B69                              Issued 2023 January 22, 14:06 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 BA11                                
    
    
                               Revision to MPEC 2020-B241                           
    
    Additional Observations:
         K20B11A 1C2023 01 19.14399 12 38 16.67 +42 01 09.4          22.3 VXEB069033
         K20B11A 1C2023 01 19.14670 12 38 17.79 +42 01 20.5          22.2 VXEB069033
         K20B11A 1C2023 01 19.14940 12 38 18.93 +42 01 31.0          22.1 VXEB069033
         K20B11A !C2023 01 21.23163 12 53 54.33 +44 19 04.3          21.3 GVEB069J04
         K20B11A !C2023 01 21.25895 12 54 06.90 +44 20 52.2          21.0 GVEB069J04
    
    Observer details:
    033 Karl Schwarzschild Observatory, Tautenburg.  Observers S. Melnikov, C.
        Hoegner, F. Ludwig, B. Stecklum.  Measurer B. Stecklum.  1.34-m f/3
        Schmidt + CCD.
    J04 ESA Optical Ground Station, Tenerife.  Observers P. Ruiz, M. Micheli, F.
        Ocana, L. Conversi.  Measurers R. Kresken, M. Micheli, F. Ocana, A.
        Knofel, M. Busch, E. Schwab.  1.0-m f/4.4 reflector + CCD.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    230119 033 0.11- 0.05-    230121 J04 0.11- 0.06-    MPO530931   -0.00 days
    
    Orbital elements:
    2020 BA11                                                Earth MOID = 0.1667 AU
    Epoch 2023 Feb. 25.0 TT = JDT 2460000.5                 Veres                   
    M 325.81472              (2000.0)            P               Q                  
    n   0.66847018     Peri.  133.55071     -0.41406043     +0.78036464             
    a   1.2954322      Node   106.27779     -0.91020496     -0.34987347             
    e   0.4163070      Incl.   29.22022     -0.00899419     -0.51828524             
    P   1.47           H   21.70          G   0.15           U   1                  
    Residuals in seconds of arc
    191224 F51  0.1-  0.1-    200127 H21  0.2+  0.2-    200128 F51  0.2-  0.1+
    191224 F51  0.2+  0.1+    200127 I52  0.3-  0.7-    200128 033  0.5-  0.3-
    191224 F51  0.0   0.1-    200127 I52  0.2+  0.5+    200128 033  0.5-  0.3-
    191224 F51  0.0   0.2+    200127 I52  0.6+  0.2+    200128 033  0.4-  0.7-
    200118 F52  0.0   0.1+    200127 I52  0.2+  0.4+    230119 033  0.2-  0.2-
    200118 F52  0.2-  0.1-    200127 F51  0.0   0.3-    230119 033  0.3-  0.1+
    200126 F51  0.1+  0.1+    200127 F51  0.1-  0.0     230119 033  0.3-  0.1-
    200126 F51  0.0   0.0     200127 F51  0.1-  0.0     230121 J04  0.0   0.1-
    200127 H21  0.1+  0.1+    200127 F51  0.1-  0.0     230121 J04  0.0   0.0
    200127 H21  0.1+  0.2-    200128 F51  0.2+  0.0
    
    Ephemeris:
    2020 BA11                a,e,i = 1.30, 0.42, 29                  q = 0.7561
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2022 12 23    10 40 06.5 +19 37 00   0.6437  1.3930   116.2    39.3    23.0
    ...
    2023 01 07    11 31 18.0 +29 45 10   0.4829  1.3029   121.6    40.0    22.3
    ...
    2023 01 15    12 11 23.4 +37 31 30   0.4197  1.2519   120.9    42.4    22.0
    ...
    2023 01 21    12 52 05.1 +44 03 41   0.3860  1.2125   117.7    46.0    21.8
    2023 01 22    13 00 02.6 +45 09 15   0.3817  1.2058   116.9    46.7    21.8
    2023 01 23    13 08 22.8 +46 14 06   0.3778  1.1991   116.0    47.5    21.8
    ...
    2023 01 29    14 06 58.7 +52 07 34   0.3620  1.1587   109.8    53.1    21.8
    ...
    2023 02 06    15 44 50.6 +56 44 18   0.3610  1.1038    99.4    61.8    21.9
    ...
    2023 02 21    18 30 11.5 +53 19 51   0.4031  1.0003    79.9    76.7    22.4
    
    A. U. Tomatic                (C) Copyright 2023 MPC           M.P.E.C. 2023-B69
    


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