MPEC 2020-O154 : 2017 OH68
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M.P.E.C. 2020-O154 Issued 2020 July 29, 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
2017 OH68
Revision to MPEC 2017-P27
Additional Observations:
K17O68H C2020 04 28.54472716 03 38.798-07 02 35.67 23.39GVEO154F51
K17O68H C2020 04 28.55636916 03 38.184-07 02 30.26 21.86GVEO154F51
K17O68H C2020 04 28.56792516 03 37.570-07 02 25.76 23.49GVEO154F51
K17O68H C2020 05 11.32474715 51 26.028-05 37 40.72 23.98GVEO154F51
K17O68H C2020 05 11.33536615 51 25.320-05 37 36.75 22.99GVEO154F51
K17O68H C2020 05 11.34602115 51 24.599-05 37 32.70 23.80GVEO154F51
K17O68H C2020 05 11.35662615 51 23.875-05 37 28.91 23.52GVEO154F51
K17O68H C2020 05 15.40868915 46 54.469-05 12 28.92 22.92GVEO154F51
K17O68H C2020 05 15.43300115 46 52.760-05 12 20.23 23.27GVEO154F51
K17O68H C2020 05 26.37097715 34 07.617-04 14 33.06 22.97GVEO154F51
K17O68H C2020 05 26.38129915 34 06.843-04 14 30.02 23.18GVEO154F51
K17O68H C2020 05 26.39164415 34 06.115-04 14 27.46 23.87GVEO154F51
K17O68H C2020 05 26.40200315 34 05.375-04 14 24.41 23.04GVEO154F51
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
200428 F51 10.3- 1.6- 200526 F51 11.2- 2.0- MPO438037 -0.01 days
Orbital elements:
2017 OH68 Earth MOID = 0.2541 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Veres
M 289.06100 (2000.0) P Q
n 0.29158940 Peri. 204.85767 +0.99796216 -0.01952848
a 2.2522757 Node 156.02388 +0.03515258 +0.96278129
e 0.4447421 Incl. 8.59747 -0.05325252 +0.26957526
P 3.38 H 20.1 G 0.15 U 0
Residuals in seconds of arc
170730 F51 0.1- 0.0 170826 H21 0.3+ 0.4+ 171019 G96 0.0 0.6-
170730 F51 0.2- 0.2+ 170826 H21 0.0 0.7+ 171022 T08 1.2+ 0.3+
170730 F51 0.0 0.0 170828 246 (1.6+ 0.4-) 171022 T08 0.4- 0.5-
170731 K88 0.1- 0.2+ 170828 246 0.9+ 0.7- 171022 T08 0.1+ 0.2-
170731 K88 0.1- 0.3+ 170828 246 0.7+ 0.0 171022 T08 0.9+ 1.1+
170731 568 0.1+ 0.1- 170828 246 (1.6+ 0.5+) 171022 T08 0.1- 0.1+
170731 T14 0.0 0.0 170831 F51 0.1- 0.2+ 171110 F51 0.2- 0.0
170731 568 0.1+ 0.0 170831 F51 0.1- 0.2+ 171110 F51 0.2- 0.1-
170731 T14 0.0 0.0 170831 F51 0.2- 0.2+ 171110 F51 0.2- 0.0
170731 568 0.1+ 0.0 170916 H21 0.1+ 0.6- 171110 F51 0.2- 0.1+
170731 T14 0.1+ 0.0 170916 H21 0.0 0.3- 171113 T05 0.5+ 0.8+
170801 K88 0.5- 0.5+ 170916 H21 0.3- 0.3- 171113 T05 0.9+ 0.2-
170801 K88 0.2- 0.0 170917 H21 0.1- 0.3- 171113 T05 0.5- 0.1-
170801 106 0.3- 0.1- 170917 H21 0.6- 0.1- 171113 T05 0.8- 0.1-
170801 106 0.8- 0.3+ 170917 H21 0.0 0.1- 171120 G96 0.3+ 0.0
170801 106 0.6+ 0.2- 170922 F51 0.1+ 0.0 171120 G96 0.2+ 0.0
170801 585 0.4- 0.1- 170922 F51 0.0 0.1+ 171120 G96 0.2+ 0.3+
170801 585 0.8- 0.1+ 170922 F51 0.0 0.0 171120 G96 0.3+ 0.1+
170802 585 0.6- 0.0 170922 F51 0.0 0.1+ 171210 807 0.6- 0.1-
170802 585 0.7- 0.1- 170925 703 0.1- 0.4+ 171210 807 0.6- 0.2-
170802 585 0.4- 0.0 170925 703 0.0 0.3- 171210 807 0.3- 0.2-
170802 585 1.1- 0.5- 170925 703 (0.1- 3.0+) 171212 F51 0.2+ 0.1+
170802 K88 0.5- 0.4+ 170926 T05 0.5+ 0.2- 171212 F51 0.1+ 0.2+
170802 585 0.1- 0.4+ 170926 T05 0.1+ 0.1- 171212 F51 0.2+ 0.2+
170802 K88 0.2- 0.2+ 170926 T05 (1.6- 0.0 ) 171220 G96 0.3+ 0.2-
170802 K88 0.1- 0.2- 170926 T05 0.5+ 0.0 171220 G96 0.6+ 0.1+
170805 H21 0.2+ 0.2+ 170927 H21 0.2+ 0.2- 171220 G96 0.3+ 0.0
170805 H21 0.4+ 0.0 170927 H21 0.3+ 0.0 171220 G96 0.3+ 0.0
170805 H21 0.3+ 0.5- 170927 H21 0.1+ 0.2+ 180121 807 0.1- 0.1+
170806 595 0.4+ 0.5+ 170929 703 (1.6+ 0.3+) 180121 807 0.1- 0.1+
170806 595 0.1- 0.4+ 170929 703 0.6- 0.5+ 180121 807 0.1+ 0.1-
170806 104 0.7- 0.1- 170929 703 0.7- 1.1- 200428 F51 0.6+ 0.2-
170806 104 0.3- 0.2- 170929 H21 0.0 0.1+ 200428 F51 0.3+ 0.5+
170806 104 0.1+ 0.9- 170929 H21 0.1+ 0.1+ 200428 F51 0.1- 0.2+
170816 H21 0.4+ 0.1- 170929 H21 0.0 0.2+ 200511 F51 0.0 0.1-
170816 H21 0.2+ 0.4- 171011 703 0.1- 0.3+ 200511 F51 0.0 0.1-
170817 291 0.2- 0.3+ 171011 703 0.1- 0.3- 200511 F51 0.2- 0.1-
170817 291 0.1- 0.3+ 171011 703 (1.5- 1.0-) 200511 F51 0.4- 0.3-
170817 291 0.1- 0.2+ 171011 703 0.5- 0.7- 200515 F51 0.0 0.0
170817 291 0.0 0.2+ 171017 H21 0.4+ 0.8- 200515 F51 0.0 0.0
170820 F51 0.0 0.1+ 171017 H21 0.0 0.2+ 200526 F51 0.0 0.0
170820 F51 0.1- 0.1+ 171019 G96 0.1+ 0.1+ 200526 F51 0.3- 0.3+
170820 F51 0.0 0.1+ 171019 G96 0.0 0.1+ 200526 F51 0.0 0.1+
170820 F51 0.0 0.1+ 171019 G96 0.3+ 0.0 200526 F51 0.2+ 0.4+
Ephemeris:
2017 OH68 a,e,i = 2.25, 0.44, 9 q = 1.2506
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 06 29 15 04 05.5 -03 40 13 1.4599 2.2165 126.1 21.8 23.7
...
2020 07 14 15 01 00.3 -04 39 45 1.5388 2.1376 111.9 26.2 23.9
...
2020 07 22 15 02 21.7 -05 26 23 1.5867 2.0946 105.0 27.9 23.9
...
2020 07 28 15 04 42.5 -06 06 53 1.6237 2.0620 100.2 29.0 24.0
2020 07 29 15 05 12.3 -06 14 02 1.6299 2.0565 99.4 29.1 24.0
2020 07 30 15 05 44.0 -06 21 17 1.6361 2.0510 98.6 29.3 24.0
...
2020 08 05 15 09 30.6 -07 06 52 1.6731 2.0180 94.1 30.1 24.0
...
2020 08 13 15 16 06.8 -08 12 16 1.7215 1.9735 88.4 30.9 24.1
...
2020 08 28 15 33 01.4 -10 24 50 1.8056 1.8890 78.7 31.6 24.1
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-O154
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