[Iaude] MPEC P04: 2016 RC20 [a=1.67,e=0.36,i=30.7,H=20.4]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Thu Aug 2 22:19:16 EDT 2018


M.P.E.C. 2018-P04                                Issued 2018 Aug. 3, 02:16 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2016 RC20
 
                          Revision to MPEC 2016-R121
 
Additional Observations:
     K16R20C KC2018 07 11.27853615 30 03.601+27 00 27.50         23.97GVEP004T12
     K16R20C  C2018 07 12.30137815 29 45.892+26 52 14.95         23.44GVEP004T12
     K16R20C  C2018 07 12.30883215 29 45.747+26 52 11.17         23.57GVEP004T12
     K16R20C  C2018 07 17.27627615 28 57.682+26 07 40.32         23.70GVEP004T12
     K16R20C  C2018 07 17.28308215 28 57.639+26 07 36.48         23.64GVEP004T12
 
Observer details:
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m).  Observers D. Hung, D. Fohring.
    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, reference and Delta-T
180711 T12 23.4+ 16.0+    180717 T12 22.2+ 15.9+    MPO403116   -0.018 day
 
Orbital elements:
2016 RC20                                                Earth MOID = 0.0643 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 232.33651              (2000.0)            P               Q
n   0.45607544     Peri.  185.88903     +0.94253232     -0.30968710
a   1.6715201      Node   194.22630     +0.32358387     +0.93957839
e   0.3641455      Incl.   30.68349     +0.08322444     -0.14589841
P   2.16           H   20.4           G   0.15           U   1
Residuals in seconds of arc
160906 F51  0.1-  0.1-    160918 926  0.2+  0.4-    161030 807  0.3-  0.2+
160906 F51  0.1+  0.0     160918 926  0.1+  0.6+    161030 807  0.2-  0.3+
160906 F51  0.0   0.1+    160927 T12  0.1-  0.0     161116 807  0.3-  0.3+
160906 F51  0.0   0.0     160927 T12  0.1-  0.1-    161116 807  0.4-  0.3+
160908 F51  0.1+  0.1+    160930 926  0.3-  0.3+    161116 807  0.2-  0.4+
160908 F51  0.1+  0.1-    160930 926  0.2-  0.1+    161125 807  0.2-  0.1+
160908 F51  0.3+  0.2+    160930 926  0.2-  0.6+    161125 807  0.4-  0.2+
160908 033  0.0   0.3-    160930 T12  0.2-  0.0     161125 807  0.5-  0.6+
160908 033  0.1-  0.1-    160930 T12  0.1-  0.0     161205 807  0.0   0.1+
160908 033  0.2-  0.4-    160930 T12  0.1-  0.0     161205 807  0.0   0.1+
160908 033  0.1+  0.4-    160930 T12  0.0   0.0     161205 807  0.1-  0.2+
160908 033  0.3+  0.1-    161001 T12  0.1-  0.0     161229 807  0.2+  0.2+
160908 033  0.2+  0.3-    161001 T12  0.1-  0.0     161229 807  0.1-  0.3+
160908 033  0.0   0.1-    161001 T12  0.1-  0.0     161229 807  0.1-  0.0
160908 033  0.1-  0.3-    161006 291  0.3-  1.0+    170202 807  0.2-  0.3+
160908 033  0.1-  0.2-    161006 291  0.1-  0.5+    170202 807  0.3+  0.2-
160909 658  0.3-  0.7-    161006 291  0.1-  0.0     170202 807  0.3+  0.0
160909 658  0.4-  0.6-    161021 691  1.0+  1.2-    180711 T12  0.1+  0.0
160909 658  0.2-  0.5-    161021 691  0.5-  0.6-    180712 T12  0.1+  0.1-
160917 705  0.2+  0.1-    161024 807  0.4-  0.3-    180712 T12  0.1+  0.2-
160917 705  0.1+  0.0     161025 807  0.3-  0.0     180717 T12  0.0   0.1-
160917 705  0.1-  0.4+    161025 807  0.1-  0.1+    180717 T12  0.0   0.0
160918 926  0.3-  0.3+    161030 807  0.2-  0.3+

Ephemeris:
2016 RC20                a,e,i = 1.67, 0.36, 31                  q = 1.0628
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 07 04    15 33 24.6 +27 48 01   1.1602  1.7894   110.4    32.2    23.3
...
2018 07 19    15 28 55.4 +25 50 35   1.2103  1.7209   100.9    35.4    23.4
...
2018 07 27    15 30 18.5 +24 21 52   1.2360  1.6828    96.2    36.9    23.5
...
2018 08 02    15 32 57.8 +23 06 49   1.2539  1.6537    93.0    37.8    23.5
2018 08 03    15 33 32.1 +22 53 42   1.2567  1.6488    92.5    37.9    23.5
2018 08 04    15 34 08.6 +22 40 25   1.2595  1.6439    91.9    38.1    23.5
...
2018 08 10    15 38 32.2 +21 17 39   1.2751  1.6142    88.9    38.9    23.5
...
2018 08 18    15 46 18.6 +19 20 14   1.2928  1.5738    85.2    39.9    23.5
...
2018 09 02    16 06 19.6 +15 24 00   1.3145  1.4968    79.0    41.4    23.5

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-P04



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