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  • MPEC 2019-F89 : 2011 BW18

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    M.P.E.C. 2019-F89                                Issued 2019 Mar. 26, 15:04 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 BW18
    
                               Revision to MPEC 2011-B47
    
    Additional Observations:
         K11B18W  C2010 08 18.49824522 30 34.360-18 02 48.95         20.5 GVEF089F51
         K11B18W  C2010 08 18.50999322 30 33.600-18 02 56.49         20.6 GVEF089F51
         K11B18W  C2010 08 18.51875622 30 33.033-18 03 02.03         20.5 GVEF089F51
         K11B18W  C2010 09 16.41181921 53 59.822-22 58 21.87         20.7 GVEF089F51
         K11B18W  C2010 09 16.42269621 53 58.957-22 58 26.58         20.8 GVEF089F51
         K11B18W  C2014 07 27.40912120 15 28.874-23 23 27.31         22.9 GVEF089F51
         K11B18W  C2014 07 29.35995420 13 04.491-23 33 48.39         21.9 GVEF089F51
         K11B18W  C2014 07 29.37209320 13 03.557-23 33 52.96         22.9 GVEF089F51
         K11B18W  C2014 07 29.38424420 13 02.581-23 33 56.64         21.8 GVEF089F51
         K11B18W  C2014 07 29.39639920 13 01.701-23 34 00.36         22.7 GVEF089F51
         K11B18W  C2014 07 31.37163820 10 34.342-23 44 17.68         23.1 GVEF089F51
         K11B18W  C2014 07 31.38403220 10 33.393-23 44 21.16         21.8 GVEF089F51
         K11B18W  C2014 07 31.39645420 10 32.430-23 44 24.96         23.0 GVEF089F51
         K11B18W  C2014 08 03.38217020 06 48.900-23 59 27.21         22.1 GVEF089F51
         K11B18W  C2014 08 03.39401420 06 47.979-23 59 30.42         23.0 GVEF089F51
         K11B18W  C2014 08 03.40587120 06 47.075-23 59 33.58         22.4 GVEF089F51
         K11B18W  C2014 08 03.41772920 06 46.158-23 59 37.42         23.4 GVEF089F51
         K11B18W  C2014 08 04.42768520 05 30.656-24 04 33.63         23.2 GVEF089F51
         K11B18W  C2014 08 04.45205720 05 28.773-24 04 39.79         23.1 GVEF089F51
    
    Observer details:
    F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, K. Chambers, T. Lowe,
        E. Magnier, A. Schultz, M. Willman.  Measurers S. Chastel, M. Huber,
        Y. Ramanjooloo, R. Wainscoat, R. Weryk.  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
    100818 F51 0.05+ 0.02+    140804 F51 2.07- 0.23-    MPO194133    +16 day
    
    Orbital elements:
    2011 BW18                                                Earth MOID = 0.1149 AU
    Epoch 2019 Apr. 27.0 TT = JDT 2458600.5                 MPC
    M 343.97864              (2000.0)            P               Q
    n   0.23286343     Peri.  334.53993     +0.34117613     -0.93617330
    a   2.6165870      Node    95.41685     +0.87633192     +0.28416585
    e   0.5816963      Incl.    4.88209     +0.34006060     +0.20695246
    P   4.23           H   19.3           G   0.15           U   1
    Residuals in seconds of arc
    100818 F51  0.1+  0.1-    110128 G96  0.5+  0.1+    110306 G96  0.1-  0.2+
    100818 F51  0.0   0.0     110128 G96  0.3+  0.1-    110306 G96  0.1-  0.0
    100818 F51  0.0   0.1+    110128 G96  1.0+  0.2+    140727 F51  0.2+  0.2+
    100916 F51  0.0   0.1-    110128 G96  0.5-  0.4-    140729 F51  0.1-  0.7+
    100916 F51  0.0   0.0     110128 H01  0.0   0.2+    140729 F51  0.1-  0.0
    110123 G96  0.1+  0.5+    110128 H01  0.1-  0.1+    140729 F51  0.8-  0.2+
    110123 G96  0.4-  0.2-    110128 H01  0.0   0.3+    140729 F51  0.1-  0.4+
    110123 G96  0.2+  0.5+    110128 H01  0.1-  0.3+    140731 F51  0.1-  0.5-
    110123 G96  0.4+  0.5+    110130 F51  0.1+  0.1-    140731 F51  0.1-  0.1-
    110123 G96  0.1-  0.3+    110130 F51  0.1+  0.0     140731 F51  0.1-  0.0
    110123 G96  0.1+  0.1-    110130 F51  0.1+  0.0     140803 F51  0.1+  0.4-
    110123 G96  0.6-  0.9-    110205 291  0.5-  0.2-    140803 F51  0.0   0.1-
    110128 G96  0.2+  0.0     110205 291  1.3-  0.3+    140803 F51  0.1+  0.3+
    110128 G96  0.0   0.1+    110205 291 (1.6-  0.2+)   140803 F51  0.1+  0.1-
    110128 G96  0.4+  0.5+    110306 G96  0.2+  0.3+    140804 F51  0.4+  0.6-
    110128 G96  0.1-  0.0     110306 G96  0.1+  0.0     140804 F51  0.3+  0.2+
    
    Ephemeris:
    2011 BW18                a,e,i = 2.62, 0.58, 5                   q = 1.0945
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2019 02 24    22 29 34.5 -12 23 02   2.8214  1.8337     2.7     1.5    23.1
    ...
    2019 03 11    23 05 15.2 -08 54 44   2.7028  1.7198     6.5     3.8    23.0
    ...
    2019 03 19    23 25 11.6 -06 52 06   2.6347  1.6590     9.0     5.4    22.9
    ...
    2019 03 25    23 40 37.3 -05 15 00   2.5825  1.6136    10.7     6.6    22.9
    2019 03 26    23 43 14.2 -04 58 24   2.5738  1.6060    11.0     6.8    22.9
    2019 03 27    23 45 51.8 -04 41 40   2.5650  1.5985    11.3     7.0    22.9
    ...
    2019 04 02    00 01 54.2 -02 58 58   2.5123  1.5535    12.8     8.2    22.8
    ...
    2019 04 10    00 24 05.2 -00 36 02   2.4423  1.4944    14.6     9.7    22.7
    ...
    2019 04 25    01 08 29.2 +04 06 50   2.3167  1.3876    17.1    12.3    22.6
    
    A. U. Tomatic                (C) Copyright 2019 MPC           M.P.E.C. 2019-F89
    

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