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  • MPEC 2020-K23 : 2015 YC2

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    M.P.E.C. 2020-K23                                  Issued 2020 May 17, 15:01 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 YC2                                 
    
    
                               Revision to MPEC 2015-Y67                            
    
    Additional Observations:
         K15Y02C KC2020 01 30.23719402 19 19.074+12 08 17.23         24.62GVEK023T12
         K15Y02C  C2020 05 16.61019119 37 34.269-12 48 39.70         21.71GVEK023T14
         K15Y02C  C2020 05 16.61091619 37 34.060-12 48 40.72         21.69GVEK023T14
         K15Y02C  C2020 05 16.61163419 37 33.848-12 48 41.74         21.63GVEK023T14
         K15Y02C  C2020 05 16.61263919 37 33.550-12 48 43.15         21.80GVEK023T14
         K15Y02C  C2020 05 16.61383619 37 33.204-12 48 44.85         21.80GVEK023T14
         K15Y02C  C2020 05 16.61455319 37 32.992-12 48 45.76         21.83GVEK023T14
    
    Observer details:
    T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observer D. J. Tholen.  2.24-m 
       f/10.1 reflector + CCD.
    T14 Mauna Kea-UH/Tholen NEO Follow-Up (CFHT).  Observer L. Wells.  Measurer D. 
       J. Tholen.  3.6-m f/4.1 reflector + MegaCam.
    
    First and last observations above in comparison with prediction:
    Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
    200130 T12 0.00+ 0.00+    200516 T14 0.04+ 0.02+    MPO386959   +0.03 days
    
    Orbital elements:
    2015 YC2                                                 Earth MOID = 0.0061 AU
    Epoch 2020 May 31.0 TT = JDT 2459000.5                  Veres
    M  16.56610              (2000.0)            P               Q
    n   0.24120869     Peri.   46.56474     -0.98614246     -0.16340737
    a   2.5558817      Node   124.01075     +0.14047369     -0.91434107
    e   0.6866462      Incl.    1.98100     +0.08826211     -0.37051104
    P   4.09           H   23.3           G   0.15           U   0
    Residuals in seconds of arc
    151219 G96  0.1-  0.1+    160103 I52  0.1+  0.1-    160111 J69  0.5-  0.5-
    151219 G96  0.1-  0.0     160103 H21  0.3-  0.3-    160111 J69  0.4-  0.4-
    151219 G96  0.4+  0.0     160103 H21  0.1-  0.0     160112 926  0.2-  0.3+
    151219 G96  0.1-  0.2+    160103 H21  0.2-  0.0     160112 926  0.1+  0.1+
    151219 G96  0.1-  0.1+    160105 H45  0.7+  0.4+    160112 926  0.0   0.1-
    151219 G96  0.2-  0.3-    160105 H45  0.2-  0.7+    160112 926  0.0   0.1-
    151219 G96  0.3-  0.0     160105 H45  0.5+  0.3+    160112 926  0.2-  0.0
    151219 G96  0.1-  0.2+    160105 H45  0.2+  0.4+    160112 926  0.3+  0.3+
    151219 G96  0.0   0.0     160105 H45  0.1+  0.2+    160112 926  0.2+  0.1+
    151219 G96  0.0   0.1+    160105 H45  0.1+  0.0     160112 926  0.2+  0.1-
    151219 G96  0.5+  0.3+    160106 568  0.0   0.1-    160112 926  0.0   0.2-
    151219 G96  0.3-  0.2+    160106 568  0.0   0.1-    160112 568  0.0   0.0
    151220 K51  0.1-  0.1+    160106 568  0.0   0.1-    160112 568  0.1-  0.0
    151220 K51  0.1-  0.1+    160106 130  0.5-  0.3-    160112 568  0.2+  0.1+
    151220 K51  0.2-  0.0     160106 130  0.5-  0.0     160113 926  0.1-  0.1+
    151221 926  0.3-  0.4+    160106 130  0.5-  0.0     160113 926  0.1+  0.2+
    151221 926  0.2+  0.1-    160106 130  0.4-  0.0     160113 926  0.5+  0.3+
    151221 926  0.4-  0.2-    160108 204  0.0   0.0     160113 926  0.0   0.2-
    151227 695  0.1-  0.9+    160108 204  0.1+  0.1+    160113 926  0.2-  0.2+
    151227 695  0.0   0.7+    160108 204  0.1+  0.0     160113 926  0.4-  0.5-
    151227 695  0.2-  0.0     160110 J04  0.1-  0.1-    160113 703  0.4-  0.1-
    151228 291  0.1-  0.1+    160110 J04  0.1+  0.0     160113 703  0.2+  0.3+
    151228 291  0.1-  0.1+    160110 J04  0.1+  0.0     160113 703  0.3+  0.1+
    151228 291  0.4-  0.0     160110 J04  0.2+  0.1+    160113 703  0.2-  0.3-
    151228 695  0.0   0.5+    160110 J04  0.4+  0.1+    160113 926  0.1+  0.1-
    151228 695  0.1-  0.3+    160110 J04  0.2+  0.0     160113 926  0.6+  0.2+
    151229 926  0.1+  0.2+    160110 H06  0.5-  0.1-    160113 926  0.1+  0.0
    151229 926  0.0   0.1-    160110 H06  0.3-  0.1+    160113 568  0.1-  0.0
    151230 291  0.1-  0.1+    160110 H06  0.1+  0.0     160114 926  0.4+  0.2+
    151230 291  0.1-  0.1+    160110 926  0.1+  0.0     160114 926  0.2-  0.0
    151230 291  0.1-  0.1+    160110 H06  0.2-  0.3-    160114 926  1.1+  0.6+
    151231 291  0.2+  0.3+    160110 926  0.1-  0.1-    160114 926  0.7+  0.3+
    151231 291  0.1-  0.3+    160110 926  0.1+  0.0     160114 926  0.9+  0.2-
    151231 291  0.1-  0.2+    160110 H06  0.1-  0.1-    160114 926  0.4+  0.2+
    160101 H21  0.1-  0.0     160110 H06  0.1-  0.0     160114 926  0.3+  0.2+
    160101 H21  0.1-  0.2+    160111 926  0.1+  0.1-    160114 926  0.4+  0.3+
    160101 H21  0.0   0.2-    160111 926  0.0   0.1-    160114 926  0.5+  0.4+
    160101 H21  0.0   0.2-    160111 926  0.2-  0.1+    160114 926  0.2+  0.1+
    160101 703  1.6-  0.2+    160111 926  0.1+  0.1-    160114 926  0.5+  0.4+
    160101 703  0.8-  0.8-    160111 926  0.2+  0.0     160114 926  0.7+  0.3+
    160101 703  0.0   1.9+    160111 926  0.2+  0.1-    160114 J95  0.3-  0.1-
    160102 H45  0.3+  0.0     160111 926  0.1-  0.5-    160114 J95  0.4-  0.0
    160102 H45  0.2+  0.5-    160111 926  0.2+  0.0     160114 J95  0.0   0.2+
    160102 H45  0.0   0.2-    160111 926  0.2+  0.2-    160114 J95  0.0   0.2-
    160102 H45  0.0   0.0     160111 474  0.1+  0.0     160114 J95  0.0   0.1-
    160102 H45  0.3+  0.3-    160111 474  0.2+  0.1+    160115 926  0.2-  0.1+
    160102 H45  0.0   0.0     160111 474  0.0   0.1-    160115 926  0.4-  0.5-
    160103 H45  0.2+  0.5+    160111 474  0.0   0.1-    160115 926  1.4+  0.4+
    160103 H45  0.3+  0.1-    160111 474  0.0   0.2-    200130 T12  0.0   0.0
    160103 H45  0.1+  0.2-    160111 J95  0.1+  0.1+    200516 T14  0.0   0.0
    160103 H45  0.2-  0.1-    160111 J95  0.1-  0.0     200516 T14  0.0   0.0
    160103 H45  0.3-  0.1+    160111 J95  0.1-  0.1+    200516 T14  0.0   0.0
    160103 H21  0.2-  0.1-    160111 J69  0.5-  0.4-    200516 T14  0.0   0.0
    160103 H21  0.1+  0.5-    160111 J69  0.4-  0.2-    200516 T14  0.0   0.0
    160103 H21  0.0   0.3-    160111 J69  0.0   0.1-    200516 T14  0.0   0.1+
    160103 I52  0.1-  0.4-    160111 J69  0.5-  0.2-
    160103 H21  0.2-  0.5-    160111 J69  0.4-  0.3-
    
    Ephemeris:
    2015 YC2                 a,e,i = 2.56, 0.69, 2                   q = 0.8009
    Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
    2020 04 17    23 28 04.0 +10 26 24   0.1392  0.8898    32.6   142.5    26.0
    ...
    2020 05 02    21 01 51.5 -04 36 46   0.1631  1.0078    85.3    85.4    22.4
    ...
    2020 05 10    20 10 55.2 -09 47 32   0.1944  1.0812   106.5    63.6    22.2
    ...
    2020 05 16    19 40 25.2 -12 33 47   0.2221  1.1390   120.2    50.1    22.2
    2020 05 17    19 35 47.1 -12 57 21   0.2270  1.1488   122.3    48.1    22.2
    2020 05 18    19 31 15.4 -13 19 55   0.2321  1.1586   124.4    46.1    22.2
    ...
    2020 05 24    19 06 08.3 -15 16 32   0.2647  1.2184   136.5    34.9    22.3
    ...
    2020 06 01    18 37 31.0 -17 12 01   0.3154  1.2992   151.1    22.1    22.4
    ...
    2020 06 16    17 57 57.2 -19 25 33   0.4372  1.4514   174.0     4.2    22.7
    
    A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-K23
    


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