[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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