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  • MPEC 2017-D21 : 2015 BN311

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    M.P.E.C. 2017-D21                                Issued 2017 Feb. 19, 14:31 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
    
                                      2015 BN311
    
                              Revision to MPEC 2015-B118
    
    Additional Observations:
         K15BV1N KC2017 01 04.58875912 30 04.048+16 10 43.21         24.1 GUED021T12
         K15BV1N  C2017 01 26.61370012 49 07.404+20 15 47.39         23.6 GUED021T12
         K15BV1N  C2017 01 26.62528012 49 07.726+20 15 57.68         23.4 GUED021T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. Fohring,
        Y. Ramanjooloo.  Measurer D. J. Tholen.  2.24-m University of Hawaii
        reflector.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc, reference and Delta-T
    170104 T12  2.9+  1.9-    170126 T12  3.9+  2.5-    MPO335342   -0.0035 day
    
    Orbital elements:
    2015 BN311 = 2014 YO44                              PHA, Earth MOID = 0.0217 AU
    Id. G. V. Williams (d, MPO 324296)
    Epoch 2017 Feb. 16.0 TT = JDT 2457800.5                 MPC
    M 210.78695              (2000.0)            P               Q
    n   0.58506204     Peri.  228.12203     +0.80449666     +0.52055959
    a   1.4157985      Node    98.59486     -0.42218597     +0.83988250
    e   0.3235827      Incl.   16.81368     -0.41778478     +0.15367204
    P   1.68           H   20.5           G   0.15           U   3
    Residuals in seconds of arc
    141229 F51  0.1+  0.2-    150120 F51  0.2+  0.0     150209 291  0.6+  0.4+
    141229 F51  0.1+  0.0     150120 F51  0.2+  0.1-    150209 291  0.2-  0.7-
    141229 F51  0.1+  0.1-    150122 F51  0.4-  0.1-    150209 291  0.4-  0.1+
    141230 711  0.2+  0.3+    150122 F51  0.1-  0.0     150225 568  0.0   0.0
    141230 711  0.4-  0.5+    150122 F51  0.0   0.3-    150225 568  0.0   0.0
    141230 711  0.0   0.5+    150122 F51  0.1+  0.0     150225 568  0.0   0.1+
    150118 F51  0.0   0.2+    150123 291  0.5-  0.6+    170104 T12  0.1-  0.2-
    150118 F51  0.1+  0.0     150123 291  0.1+  0.1+    170126 T12  0.1+  0.1+
    150120 F51  0.1+  0.0     150123 291  0.0   0.1+    170126 T12  0.0   0.0
    
    Ephemeris:
    2015 BN311               a,e,i = 1.42, 0.32, 17                  q = 0.9577
    Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
    2017 01 20    12 44 52.6 +18 44 07   1.2189  1.8650   115.3    28.5    23.5
    ...
    2017 02 04    12 52 11.2 +22 34 34   1.0771  1.8514   127.6    24.9    23.2
    ...
    2017 02 12    12 52 17.8 +25 07 58   1.0134  1.8417   134.0    22.7    22.9
    ...
    2017 02 18    12 50 20.3 +27 13 15   0.9725  1.8333   138.4    21.0    22.8
    2017 02 19    12 49 49.7 +27 34 43   0.9663  1.8318   139.1    20.7    22.8
    2017 02 20    12 49 15.9 +27 56 17   0.9603  1.8302   139.8    20.4    22.7
    ...
    2017 02 26    12 44 44.7 +30 06 37   0.9284  1.8205   143.2    19.0    22.6
    ...
    2017 03 06    12 35 43.1 +32 54 59   0.8974  1.8060   145.8    18.0    22.5
    ...
    2017 03 21    12 11 26.5 +37 04 42   0.8758  1.7741   142.7    19.9    22.5
    
    A. U. Tomatic                (C) Copyright 2017 MPC           M.P.E.C. 2017-D21
    

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