MPEC 2019-W68 : 2018 SK1
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M.P.E.C. 2019-W68 Issued 2019 November 20, 01:23 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
2018 SK1
Revision to MPEC 2018-S46
Additional Observations:
K18S01K C2014 08 29.59522703 03 19.789+00 42 14.22 22.4 GVEW068F51
K18S01K C2014 08 29.60279203 03 20.781+00 42 39.53 21.8 GVEW068F51
K18S01K C2014 08 29.61035603 03 21.738+00 43 04.21 22.4 GVEW068F51
K18S01K C2016 08 01.58633301 31 46.156-28 29 28.30 22.7 GVEW068F51
K18S01K C2016 08 01.59490401 31 47.070-28 29 20.92 22.9 GVEW068F51
K18S01K C2016 08 01.60345901 31 47.962-28 29 12.75 22.6 GVEW068F51
K18S01K C2016 08 01.61200701 31 48.861-28 29 04.64 22.6 GVEW068F51
K18S01K C2016 08 18.62354302 00 14.709-22 33 24.33 22.0 GVEW068F51
K18S01K C2016 08 26.58795202 10 33.485-18 15 02.65 21.3 GVEW068F51
K18S01K C2016 09 08.57394002 21 35.743-07 18 56.77 21.0 GVEW068F51
K18S01K C2016 09 08.58788002 21 35.977-07 18 01.30 21.0 GVEW068F51
K18S01K C2016 10 12.39487901 44 25.485+52 53 49.67 20.3 GVEW068F51
K18S01K C2016 10 12.41984601 44 19.292+52 56 18.89 20.3 GVEW068F51
K18S01K C2016 10 17.47141001 23 14.200+60 20 17.55 21.5 GVEW068F51
K18S01K C2016 10 17.48437101 23 10.100+60 21 16.50 20.9 GVEW068F51
K18S01K C2016 10 17.49734001 23 05.991+60 22 15.08 20.5 GVEW068F51
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
140829 F51 16.8+ 22.2+ 161017 F51 23.8+ 15.6+ MPO473502 -738 days
Orbital elements:
2018 SK1 Earth MOID = 0.1523 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Veres
M 282.88326 (2000.0) P Q
n 0.48752063 Peri. 25.33292 +0.85902010 -0.51084771
a 1.5988488 Node 5.73533 +0.39396524 +0.61791863
e 0.2915255 Incl. 19.55731 +0.32691873 +0.59767147
P 2.02 H 22.4 G 0.15 U 1
Residuals in seconds of arc
140829 F51 0.1- 0.5- 180920 204 0.2+ 0.1+ 181005 G96 0.1+ 0.1-
140829 F51 0.2+ 0.2+ 180920 H21 0.4- 0.3+ 181005 F52 0.0 0.0
140829 F51 0.0 0.2+ 180920 H21 0.2- 0.4+ 181005 F52 0.0 0.1+
160801 F51 0.1+ 0.4+ 180920 H21 0.1- 0.2+ 181005 F52 0.1+ 0.0
160801 F51 0.2+ 0.2- 180921 H21 0.2+ 0.3+ 181005 F52 0.0 0.1+
160801 F51 0.0 0.0 180921 H21 0.2- 0.4- 181005 F52 0.0 0.0
160801 F51 0.1- 0.1+ 180921 H21 0.4- 0.2- 181005 F52 0.1+ 0.1-
160818 F51 0.3+ 0.1- 180922 807 0.0 0.1+ 181005 F52 0.1+ 0.0
160826 F51 0.1+ 0.2- 180922 807 0.1+ 0.1- 181006 H21 0.1+ 0.1-
160908 F51 0.0 0.2- 180922 807 0.1+ 0.1- 181006 H21 0.1- 0.3+
160908 F51 0.0 0.1- 180928 I52 0.1+ 0.2- 181006 H21 0.0 0.1-
161012 F51 0.1+ 0.0 180928 I52 0.0 0.3- 181009 H21 0.1+ 0.2+
161012 F51 0.0 0.1- 180928 H36 0.3- 0.5+ 181009 H21 0.1+ 0.2+
161017 F51 0.2+ 0.3- 180928 H21 0.1+ 0.3- 181009 H21 0.1+ 0.0
161017 F51 0.1+ 0.1- 180928 H36 1.0+ 0.2+ 181010 I52 0.1+ 0.0
161017 F51 0.1- 0.0 180928 H21 0.1+ 0.2- 181010 I52 0.1- 0.4-
180917 I41 0.3- 0.5+ 180928 H21 0.1+ 0.1- 181010 I52 0.0 0.0
180917 I41 0.8- 0.4+ 180928 H36 0.2- 0.2+ 181010 I52 0.2- 0.5-
180917 I41 0.5- 0.5+ 180928 H36 0.0 0.5+ 181018 I52 0.3- 0.0
180917 I41 0.5- 0.7+ 180928 H36 0.2+ 0.7+ 181018 I52 0.1- 0.1-
180918 291 0.2- 0.0 180928 691 0.0 0.0 181018 I52 0.3- 0.1-
180918 291 0.3- 0.3+ 180928 691 0.1+ 0.0 181018 I52 0.1+ 0.0
180918 291 0.2- 0.4+ 180928 691 0.0 0.2- 181019 H21 0.1+ 0.0
180918 I52 0.6+ 0.1- 180929 H21 0.1- 0.4+ 181019 H21 0.2+ 0.4+
180918 I52 0.1+ 0.5- 180929 H21 0.5+ 0.2- 181019 H21 0.2+ 0.1+
180918 I52 0.4- 0.5- 180929 H21 0.6+ 0.1+ 181021 I52 1.2- 0.4-
180918 I52 0.1+ 0.1- 180929 H21 0.4+ 0.0 181021 I52 0.8- 0.6-
180918 H21 0.1- 0.2- 180930 I52 0.7- 0.2+ 181021 I52 0.2- 0.8+
180918 H21 0.1+ 0.1- 180930 I52 0.1- 0.1- 181021 I52 0.6- 0.1+
180918 H21 0.0 0.1- 180930 I52 0.0 0.0 181027 I52 0.5- 0.2+
180918 G96 0.1- 0.2- 180930 I52 0.1+ 0.3- 181027 I52 0.5- 0.4-
180918 G96 0.2- 0.2- 181003 T05 0.5- 0.6- 181027 I52 0.2- 0.6-
180918 G96 0.1- 0.2+ 181003 T05 0.3- 0.1- 181027 I52 0.1+ 0.1-
180918 G96 0.2+ 0.3- 181003 T05 0.5- 0.2+ 181107 711 0.2+ 0.8+
180918 L01 1.3+ 0.3- 181003 T05 0.1+ 0.2+ 181107 711 0.2+ 0.7+
180918 L01 0.3- 0.1+ 181005 G96 0.3+ 0.0 181107 711 0.1+ 0.4+
180920 204 0.2- 0.5+ 181005 G96 0.2- 0.0
Ephemeris:
2018 SK1 a,e,i = 1.60, 0.29, 20 q = 1.1327
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2019 10 21 13 31 53.7 -14 49 23 3.0538 2.0634 4.9 2.3 26.7
...
2019 11 05 14 00 03.0 -18 22 31 3.0360 2.0648 9.6 4.6 26.8
...
2019 11 13 14 15 27.4 -20 12 49 3.0148 2.0637 13.2 6.3 26.9
...
2019 11 19 14 27 12.8 -21 33 48 2.9938 2.0620 16.0 7.6 26.9
2019 11 20 14 29 11.5 -21 47 09 2.9898 2.0616 16.5 7.8 26.9
2019 11 21 14 31 10.4 -22 00 27 2.9857 2.0613 17.0 8.1 26.9
...
2019 11 27 14 43 10.9 -23 19 18 2.9588 2.0586 19.9 9.4 26.9
...
2019 12 05 14 59 29.7 -25 01 38 2.9162 2.0539 23.9 11.2 27.0
...
2019 12 20 15 31 04.5 -28 03 57 2.8168 2.0416 31.3 14.5 27.0
A. U. Tomatic (C) Copyright 2019 MPC M.P.E.C. 2019-W68
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