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  • MPEC 2020-D112 : 2016 YY7

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    M.P.E.C. 2020-D112                            Issued 2020 February 26, 15:00 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
    
                                    2016 YY7                                 
    
    
                               Revision to MPEC 2016-Y72                            
    
    Additional Observations:
         K16Y07Y KC2020 01 29.59978913 06 56.707+26 58 39.01         24.38GVED112T12
         K16Y07Y  C2020 01 30.62073413 07 27.602+27 20 40.80         23.93GVED112T12
         K16Y07Y  C2020 01 30.62843513 07 27.805+27 20 50.83         23.94GVED112T12
         K16Y07Y  C2020 01 30.63563613 07 27.988+27 21 00.21         23.93GVED112T12
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. Hung, D. J. 
       Tholen.  Measurer D. J. Tholen.  2.24-m f/10.1 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
    200129 T12 0.04+ 0.02+    200130 T12 0.04+ 0.02+    MPO438034   +0.09 days
    
    Orbital elements:
    2016 YY7                                                 Earth MOID = 0.3997 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
    M 104.04082              (2000.0)            P               Q
    n   0.35262933     Peri.  305.56686     +0.45561318     -0.79028271
    a   1.9842227      Node   112.19976     +0.89015478     +0.40778839
    e   0.3541440      Incl.   26.26494     -0.00641001     +0.45734218
    P   2.80           H   20.7           G   0.15           U   2
    Residuals in seconds of arc
    161223 F51  0.2+  0.1-    170105 I52  0.6-  0.6-    170129 I52  0.2-  0.4-
    161223 F51  0.1+  0.0     170105 705  0.1+  0.4-    170129 291  0.2-  0.4+
    161223 F51  0.1+  0.0     170105 705  0.0   0.2-    170129 291  0.1+  0.3+
    161224 568  0.0   0.1-    170105 705  0.2-  0.2+    170129 291  0.2-  0.6+
    161224 568  0.0   0.1-    170108 G96  0.8-  0.8+    170130 I52  0.4+  0.4-
    161224 568  0.1+  0.1-    170108 G96  0.1+  0.4-    170130 I52  0.2-  0.2-
    161227 291  0.2-  0.0     170108 G96  0.2+  0.0     170130 I52  0.2-  0.1-
    161227 291  0.0   0.1+    170108 G96  0.2+  0.1-    170130 I52  0.2-  0.3-
    161227 291  0.1+  0.2+    170109 G96  1.0+  0.3-    170201 F51  0.0   0.1-
    161228 807  0.0   0.0     170109 G96  0.5-  0.8+    170201 F51  0.2-  0.3-
    161228 807  0.1+  0.1+    170109 G96  1.1-  0.9+    170201 F51  0.4+  0.4-
    161228 807  0.1+  0.1+    170119 G96  0.6+  0.5+    170216 H21  0.6+  0.5+
    161230 291  0.1+  0.3+    170119 G96  0.8+  0.2+    170216 H21  0.4+  0.6+
    161230 291  0.2+  0.2-    170119 G96  0.4-  0.7+    170216 H21  0.4+  0.8+
    161230 291  0.0   0.5-    170119 G96  1.3-  0.1+    200129 T12  0.0   0.1-
    170105 I52  0.1+  0.1-    170129 I52  0.2-  0.5+    200130 T12  0.0   0.0
    170105 I52  0.6-  0.2-    170129 I52  0.3-  0.1-    200130 T12  0.0   0.0
    170105 I52  0.3-  0.1+    170129 I52  0.4-  0.3-    200130 T12  0.0   0.1+
    
    Ephemeris:
    2016 YY7                 a,e,i = 1.98, 0.35, 26                  q = 1.2815
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 01 27    13 05 25.6 +26 03 21   1.1883  1.8614   117.6    28.0    23.7
    ...
    2020 02 11    13 10 01.3 +31 33 30   1.1557  1.9288   128.2    23.7    23.6
    ...
    2020 02 19    13 08 08.5 +34 30 26   1.1528  1.9640   132.9    21.6    23.5
    ...
    2020 02 25    13 04 42.7 +36 35 39   1.1581  1.9900   135.7    20.3    23.5
    2020 02 26    13 03 58.8 +36 55 31   1.1597  1.9944   136.0    20.2    23.5
    2020 02 27    13 03 12.2 +37 15 01   1.1615  1.9987   136.4    20.0    23.5
    ...
    2020 03 04    12 57 40.9 +39 03 42   1.1762  2.0242   137.9    19.2    23.6
    ...
    2020 03 12    12 48 25.6 +41 01 26   1.2068  2.0578   138.3    18.7    23.6
    ...
    2020 03 27    12 28 20.2 +43 01 07   1.2971  2.1187   134.4    19.7    23.9
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-D112
    


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