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  • MPEC 2020-O32 : 2011 BC40

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    M.P.E.C. 2020-O32                                 Issued 2020 July 20, 00:11 UT
    
         The Minor Planet Electronic Circulars contain information on unusual
             minor planets and routine data on comets.  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
    
                                    2011 BC40                                
    
    
                               Revision to MPEC 2011-B71                            
    
    Additional Observations:
         K11B40C  C2020 06 22.49296420 32 00.538-04 06 37.47         22.27GVEO032F51
         K11B40C  C2020 06 22.50639820 32 00.175-04 06 31.05         22.38GVEO032F51
         K11B40C  C2020 06 22.51981820 31 59.825-04 06 24.62         22.38GVEO032F51
         K11B40C  C2020 07 02.56581420 26 10.494-02 48 12.09         22.31GVEO032F51
         K11B40C  C2020 07 02.56931620 26 10.298-02 48 10.48         22.60GVEO032F51
         K11B40C  C2020 07 02.57281420 26 10.126-02 48 08.99         22.20GVEO032F51
         K11B40C  C2020 07 19.37638720 06 40.501-01 05 29.02         21.40wUEO032F51
         K11B40C  C2020 07 19.39841820 06 38.397-01 05 23.23         21.70wUEO032F51
         K11B40C  C2020 07 19.40940520 06 37.337-01 05 20.35         21.73wUEO032F51
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe, A.
        Schultz, M. Willman.  Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
        Wainscoat, R. Weryk, K. Chambers, T. de Boer, L. Denneau, J. Fairlamb, H.
        Flewelling, C.-C. Lin, E. Magnier.  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
    200622 F51 2.67- 0.79-    200719 F51 3.80- 1.38-    MPO194134   -4.25 days
    
    Orbital elements:
    2011 BC40                                                Earth MOID = 0.0804 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
    M 308.73363              (2000.0)            P               Q
    n   0.29652358     Peri.  194.38780     +0.64594054     -0.75902635
    a   2.2272206      Node   215.48308     +0.71353826     +0.63825102
    e   0.6164879      Incl.    8.06981     +0.27133739     +0.12850928
    P   3.32           H   20.3           G   0.15           U   2
    Residuals in seconds of arc
    110130 703  1.4-  0.1-    110131 474  1.1-  0.1+    110219 H21  0.5-  0.5+
    110130 703  0.0   0.4+    110131 474  0.2+  0.1+    110219 H21  1.0-  0.4+
    110130 703  0.1+  0.3+    110131 474  0.4+  0.0     110219 H21  0.6-  0.5+
    110130 G96  0.3-  0.1+    110201 300  0.7+  0.3+    110220 950  0.2+  0.1-
    110130 G96  0.1+  0.0     110201 300  1.2+  0.7+    110220 950  0.1+  0.0
    110130 G96  0.1+  0.1+    110201 300  0.0   0.0     110220 950  0.5-  0.1-
    110130 G96  0.0   0.1+    110201 300  0.6+  0.2+    110220 950  0.3-  0.3-
    110130 651  0.6+  0.5+    110201 204  0.1+  0.0     110220 950  0.2-  0.0
    110130 651  0.4+  0.8+    110201 204  0.1+  0.1-    110304 291  1.1+  0.1-
    110130 J95  0.2-  0.1-    110203 G58  0.8-  0.1+    110304 291  0.5-  0.5+
    110130 J95  0.0   0.9-    110203 G58  0.5-  0.2+    110304 291  0.3+  0.4-
    110130 J95  0.1-  0.2+    110203 G58  0.2+  0.6-    200622 F51  0.2+  0.1+
    110130 J95  0.2+  0.0     110208 H21  0.8-  0.5+    200622 F51  0.0   0.0
    110131 H01  0.1+  0.0     110208 H21  0.2-  0.3-    200622 F51  0.1-  0.1-
    110131 H01  0.1+  0.1-    110208 H21  0.1+  0.7-    200702 F51  0.1+  0.1-
    110131 H21  0.4+  0.1+    110208 926  0.1-  0.4-    200702 F51  0.2-  0.0
    110131 H01  0.0   0.1-    110208 926  0.1-  0.2-    200702 F51  0.1-  0.1-
    110131 H21  0.1-  0.2+    110208 926  0.1+  0.1+    200719 F51  0.0   0.2+
    110131 H01  0.2-  0.2+    110210 H21  1.0+  0.2+    200719 F51  0.1+  0.0
    110131 H21  0.3-  0.1-    110210 H21  0.8+  0.0     200719 F51  0.0   0.1-
    110131 474  0.1+  0.3-    110210 H21  0.5+  0.1-
    
    Ephemeris:
    2011 BC40                a,e,i = 2.23, 0.62, 8                   q = 0.8542
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 06 20    20 32 49.5 -04 27 02   1.1208  1.9921   137.5    20.2    23.0
    ...
    2020 07 05    20 24 07.8 -02 30 36   0.9179  1.8721   150.8    15.4    22.3
    ...
    2020 07 13    20 15 32.8 -01 38 35   0.8262  1.8061   157.0    12.7    21.9
    ...
    2020 07 19    20 07 14.6 -01 07 08   0.7659  1.7556   160.0    11.4    21.6
    2020 07 20    20 05 42.7 -01 02 40   0.7565  1.7472   160.3    11.3    21.6
    2020 07 21    20 04 08.3 -00 58 27   0.7474  1.7387   160.5    11.3    21.6
    ...
    2020 07 27    19 53 56.4 -00 38 43   0.6972  1.6873   159.8    12.0    21.4
    ...
    2020 08 04    19 38 46.2 -00 29 04   0.6420  1.6177   154.5    15.7    21.2
    ...
    2020 08 19    19 09 13.3 -01 08 03   0.5709  1.4846   137.6    27.4    21.2
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-O32
    


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