MPEC 2021-C110 : 2020 HK7
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M.P.E.C. 2021-C110 Issued 2021 February 9, 01:45 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
2020 HK7
Revision to MPEC 2020-H203
Additional Observations:
K20H07K C2013 04 15.49818115 11 38.810-14 06 24.94 20.72GVEC110F51
K20H07K C2013 04 15.51243915 11 34.294-14 05 46.76 21.01GVEC110F51
K20H07K C2013 04 15.52667415 11 29.798-14 05 08.49 20.93GVEC110F51
K20H07K C2013 04 15.54096215 11 25.310-14 04 30.21 21.23GVEC110F51
K20H07K C2013 05 03.38995113 52 32.123-02 07 20.94 21.17GVEC110F51
K20H07K C2013 05 03.40352713 52 29.235-02 06 55.72 21.25GVEC110F51
K20H07K C2013 05 03.41707513 52 26.340-02 06 30.55 21.42GVEC110F51
K20H07K C2014 05 07.45140616 50 55.637-04 04 08.89 22.35GVEC110F51
K20H07K C2014 05 07.46358416 50 53.452-04 03 48.81 21.73GVEC110F51
K20H07K C2014 05 07.47580316 50 51.265-04 03 27.94 22.23GVEC110F51
K20H07K C2014 05 07.48805316 50 49.080-04 03 07.51 22.33GVEC110F51
K20H07K C2014 06 24.32956514 21 09.714+10 23 55.05 22.60GVEC110F51
K20H07K C2014 06 24.34105014 21 08.464+10 23 55.87 22.92GVEC110F51
K20H07K C2014 06 24.35249714 21 07.208+10 23 56.54 23.48GVEC110F51
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
130415 F51 53.8- 1.5- 140624 F51 6.3- 9.5- MPO546172 +0.00 days
Orbital elements:
2020 HK7 Earth MOID = 0.0737 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 30.04822 (2000.0) P Q
n 1.12756429 Peri. 206.07610 +0.59747971 -0.79423257
a 0.9142013 Node 207.65242 +0.77105418 +0.60687292
e 0.6292628 Incl. 13.77531 +0.22021228 +0.02999807
P 0.87 H 21.9 G 0.15 U 3
Residuals in seconds of arc
130415 F51 0.1+ 0.0 200426 I52 0.0 0.3- 200427 H21 0.3+ 0.3+
130415 F51 0.2- 0.0 200426 I52 0.3- 0.1+ 200427 H21 0.3- 0.3+
130415 F51 0.2- 0.0 200426 033 0.5- 0.2- 200427 673 0.2+ 0.0
130415 F51 0.0 0.1- 200426 033 0.2- 0.2- 200427 673 0.4+ 0.2+
130503 F51 0.0 0.1- 200426 033 0.4- 0.5- 200427 246 0.5+ 0.5-
130503 F51 0.1+ 0.1- 200426 L01 0.6+ 0.3- 200427 246 0.0 0.7-
130503 F51 0.0 0.0 200426 L01 0.5- 0.3- 200427 246 0.4+ 0.9-
140507 F51 0.2+ 0.0 200426 L01 0.2- 0.3+ 200427 033 0.0 0.3+
140507 F51 0.1+ 0.3- 200426 L01 0.0 0.5+ 200427 033 0.3- 0.3+
140507 F51 0.0 0.1+ 200426 246 0.9+ 0.4- 200427 033 0.3- 0.4-
140507 F51 0.1+ 0.1- 200426 246 0.2+ 0.2+ 200429 F51 0.1- 0.1+
140624 F51 0.3- 0.1+ 200426 K63 0.1- 0.4- 200429 F51 0.0 0.0
140624 F51 0.2- 0.1+ 200426 K63 0.2- 0.4- 200429 F51 0.1+ 0.0
140624 F51 0.3- 0.0 200426 I93 0.4- 0.7+ 200501 F51 0.1- 0.2+
200402 F51 0.4+ 0.2- 200426 K63 0.3- 1.2+ 200501 F51 0.1+ 0.1+
200426 G96 0.1- 0.2- 200426 K63 0.2- 1.5+ 200511 F52 0.1- 0.1+
200426 G96 0.2- 0.1+ 200426 I93 0.2- 0.4+ 200511 F52 0.0 0.2+
200426 G96 0.0 0.1- 200427 I52 0.2+ 0.5+ 200511 F52 0.3- 0.1+
200426 G96 0.1+ 0.1+ 200427 I52 1.2+ 0.5- 200511 F52 0.1+ 0.2+
200426 I52 0.0 0.1- 200427 I52 0.5+ 0.2+
200426 I52 0.4- 0.1- 200427 H21 0.2- 0.1+
Ephemeris:
2020 HK7 a,e,i = 0.91, 0.63, 14 q = 0.3389
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 10 15 44 19.2 -24 03 25 1.1888 0.9453 50.5 53.4 24.1
...
2021 01 25 16 15 43.7 -23 52 38 1.2117 1.0944 58.7 50.2 24.4
...
2021 02 02 16 31 16.5 -23 35 23 1.2011 1.1624 63.3 49.3 24.5
...
2021 02 08 16 42 16.1 -23 16 48 1.1841 1.2086 67.0 48.7 24.5
2021 02 09 16 44 02.4 -23 13 13 1.1806 1.2159 67.6 48.6 24.5
2021 02 10 16 45 47.5 -23 09 29 1.1769 1.2231 68.2 48.5 24.5
...
2021 02 16 16 55 54.0 -22 44 01 1.1509 1.2640 72.0 48.0 24.5
...
2021 02 24 17 08 12.2 -22 01 34 1.1071 1.3127 77.3 47.3 24.5
...
2021 03 11 17 27 01.7 -20 13 24 1.0018 1.3871 88.1 45.7 24.4
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-C110
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