MPEC 2021-C118 : 2020 LJ2
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M.P.E.C. 2021-C118 Issued 2021 February 9, 01:48 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 LJ2
Revision to MPEC 2020-M54
Additional Observations:
K20L02J C2017 10 03.47856003 07 10.817+34 47 18.71 22.05GVEC118F51
K20L02J C2017 10 03.49071503 07 10.414+34 47 21.16 21.33GVEC118F51
K20L02J C2017 10 03.50283803 07 10.040+34 47 23.72 22.15GVEC118F51
K20L02J C2017 10 03.51503903 07 09.606+34 47 25.76 21.49GVEC118F51
K20L02J C2017 11 10.33029702 28 23.048+30 46 06.64 21.74GVEC118F51
K20L02J C2017 11 10.34064502 28 22.426+30 45 57.89 21.85GVEC118F51
K20L02J C2017 11 10.35101402 28 21.791+30 45 50.49 21.90GVEC118F51
K20L02J C2017 11 10.36148402 28 21.097+30 45 42.44 22.89GVEC118F51
K20L02J C2017 11 18.27956902 22 12.051+29 04 01.44 22.26GVEC118F51
K20L02J C2017 11 18.29194002 22 11.542+29 03 52.30 22.64GVEC118F51
K20L02J C2017 11 18.30432902 22 11.022+29 03 42.81 22.29GVEC118F51
K20L02J C2017 11 18.31674202 22 10.491+29 03 33.66 22.08GVEC118F51
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 (or two decimals in degrees), reference and Delta-T
171003 F51 0.04+ 0.00+ 171118 F51 0.03+ 0.01+ E2020-UO8 +0.00 days
Orbital elements:
2020 LJ2 Earth MOID = 0.2131 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 36.52054 (2000.0) P Q
n 0.32092128 Peri. 27.91477 +0.87928857 +0.46879775
a 2.1128583 Node 303.88361 -0.45368800 +0.77061352
e 0.4223575 Incl. 5.81736 -0.14497864 +0.43172153
P 3.07 H 21.8 G 0.15 U 0
Residuals in seconds of arc
171003 F51 0.0 0.0 200807 C95 0.2- 0.2- 200825 H45 0.3+ 0.4+
171003 F51 0.0 0.0 200808 L01 0.6+ 0.1+ 200827 I41 0.6- 0.2+
171003 F51 0.4+ 0.3+ 200808 L01 0.1+ 0.2- 200827 I41 0.1+ 0.2+
171003 F51 0.1+ 0.0 200808 I52 0.1+ 0.5- 200904 F52 0.0 0.0
171110 F51 0.3- 0.5+ 200808 I52 0.1- 0.0 200904 F52 0.1+ 0.1+
171110 F51 0.0 0.5- 200808 I52 0.3- 0.2+ 200904 F52 0.1- 0.1-
171110 F51 0.2+ 0.1- 200809 734 0.2- 0.4- 200905 F51 0.0 0.0
171110 F51 0.3- 0.3- 200809 734 0.3- 0.0 200905 F51 0.1+ 0.1+
171118 F51 0.0 0.1+ 200809 734 0.0 0.3- 200905 F51 0.1+ 0.0
171118 F51 0.1+ 0.1+ 200809 734 0.3- 0.2- 200906 I41 0.3+ 0.2+
171118 F51 0.1+ 0.2- 200809 734 0.1- 0.4- 200906 I41 0.2+ 0.2+
171118 F51 0.0 0.1- 200812 F51 0.0 0.1- 200906 I41 0.1+ 0.3+
200615 F51 0.1+ 0.0 200812 F51 0.0 0.0 200906 I41 0.2+ 0.4+
200615 F51 0.1+ 0.0 200812 F51 0.0 0.0 200907 I41 0.2+ 0.2+
200615 F51 0.1+ 0.0 200815 204 0.3- 0.1- 200907 I41 0.1- 0.0
200616 568 0.0 0.1+ 200815 204 0.2- 0.1+ 200907 I41 0.4+ 0.1+
200616 568 0.0 0.1- 200815 T08 1.1+ 0.5+ 200910 G96 0.4- 0.1-
200616 568 0.0 0.0 200815 T08 0.3- 0.8- 200910 G96 0.1- 0.2-
200619 474 0.5+ 0.3+ 200815 T08 0.2+ 0.4- 200910 G96 0.0 0.1+
200619 474 0.8- 0.3+ 200815 T08 0.1- 0.6+ 200910 G96 0.1- 0.1-
200619 474 0.6- 0.2- 200816 F52 0.0 0.0 200911 F52 0.2- 0.0
200619 474 0.5- 0.2+ 200816 F52 0.1- 0.0 200911 F52 0.1- 0.0
200621 474 0.0 0.1+ 200816 F52 0.1- 0.1- 200911 F52 0.1- 0.1+
200621 474 0.1+ 0.1+ 200816 F52 0.1- 0.1- 200911 F52 0.0 0.0
200621 474 0.0 0.1- 200818 H45 0.1- 0.4+ 200911 F51 0.0 0.0
200624 F51 0.0 0.0 200818 H45 0.1+ 0.2+ 200911 F51 0.0 0.0
200624 F51 0.2+ 0.1+ 200818 H45 0.2- 0.3+ 200911 F51 0.0 0.0
200624 F51 0.0 0.0 200818 H45 0.1- 0.1+ 200915 F52 0.1- 0.1+
200624 F51 0.1+ 0.1+ 200818 H45 0.7+ 0.2- 200915 F52 0.0 0.1-
200624 F51 0.0 0.2- 200818 H45 0.2+ 0.6- 200915 F52 0.0 0.0
200624 F51 0.0 0.1+ 200818 G96 0.0 0.0 200915 F52 0.0 0.0
200713 F51 0.2+ 0.2+ 200818 G96 0.1- 0.1- 200916 F51 0.0 0.1+
200713 F51 0.0 0.0 200818 G96 0.1- 0.0 200916 F51 0.0 0.0
200713 F51 0.1+ 0.0 200818 G96 0.1+ 0.1- 200916 F51 0.0 0.0
200713 F51 0.0 0.0 200818 D29 0.3- 0.1+ 200918 I41 0.3+ 0.3+
200713 474 0.2+ 0.1- 200818 D29 0.1- 0.1+ 200918 I41 0.1+ 0.0
200713 474 0.0 0.1- 200818 D29 0.3- 0.2+ 200918 I41 0.6+ 0.7+
200713 474 0.0 0.0 200821 T05 0.2+ 0.4+ 200918 I41 0.3+ 0.1-
200713 474 0.1+ 0.1- 200821 T05 0.3+ 0.6+ 200920 G96 0.0 0.2-
200714 I52 0.1+ 0.0 200821 F51 0.0 0.0 200920 G96 0.3- 0.2-
200714 I52 0.2- 0.1- 200821 F51 0.0 0.1- 200920 G96 0.1- 0.0
200714 I52 0.1+ 0.2- 200821 F51 0.0 0.0 200920 G96 0.1+ 0.2-
200714 I52 0.2+ 0.4- 200821 T05 0.7+ 0.5+ 200926 G96 0.0 0.7-
200718 F51 0.0 0.0 200821 T05 0.1- 0.2+ 200926 G96 0.3- 0.2-
200718 F51 0.0 0.0 200822 H45 0.4- 0.3+ 200926 G96 0.1- 0.5-
200718 F51 0.0 0.0 200822 H45 0.2- 0.7- 200926 G96 0.1- 0.1-
200722 F51 0.0 0.0 200822 H45 0.4- 0.2+ 201005 I52 0.0 0.1-
200722 F51 0.0 0.1+ 200822 H45 0.4- 0.1+ 201005 I52 0.0 0.4-
200722 F51 0.1- 0.1+ 200822 H45 0.2- 0.0 201005 I52 0.4- 0.1-
200726 G96 0.0 0.4- 200823 T08 1.2- 0.0 201005 I52 0.0 0.1+
200726 G96 0.0 0.2- 200823 T08 0.2- 0.1- 201007 G96 0.3+ 0.1-
200726 G96 0.1+ 0.0 200823 T08 0.1+ 0.2+ 201007 G96 0.1+ 0.3-
200726 G96 0.1+ 0.1- 200823 T08 0.5- 0.4- 201007 G96 0.4- 0.6-
200729 I52 0.3- 0.3- 200824 I41 0.1+ 0.3+ 201007 G96 0.1- 0.3-
200729 I52 0.3+ 0.7- 200824 I41 0.2+ 0.3+ 201015 G96 0.2+ 0.2-
200729 I52 0.1- 0.0 200824 K87 0.2- 0.2- 201015 G96 0.3+ 0.5+
200731 I52 0.1- 0.6- 200824 K87 0.1- 0.0 201015 G96 0.1+ 0.1+
200731 I52 0.0 0.2- 200824 K87 0.1+ 0.0 201015 G96 0.2- 0.0
200731 I52 0.3- 0.0 200825 H45 0.3+ 0.4+ 201015 F52 0.1- 0.0
200731 I52 0.1+ 0.2- 200825 H45 0.3+ 0.2+ 201015 F52 0.1+ 0.1+
200807 C95 0.0 0.0 200825 H45 0.1- 0.1+ 201015 F52 0.1+ 0.0
200807 C95 0.3+ 0.2- 200825 H45 0.4- 0.3+
Ephemeris:
2020 LJ2 a,e,i = 2.11, 0.42, 6 q = 1.2205
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 10 01 40 48.2 +17 50 49 1.2922 1.7555 100.1 33.5 25.0
...
2021 01 25 02 10 41.2 +19 15 58 1.5173 1.8379 92.0 32.4 25.4
...
2021 02 02 02 26 41.5 +20 01 32 1.6416 1.8815 87.8 31.6 25.6
...
2021 02 08 02 38 43.4 +20 35 04 1.7363 1.9139 84.6 30.9 25.7
2021 02 09 02 40 43.9 +20 40 35 1.7521 1.9193 84.0 30.7 25.8
2021 02 10 02 42 44.4 +20 46 04 1.7680 1.9246 83.5 30.6 25.8
...
2021 02 16 02 54 48.7 +21 18 22 1.8638 1.9567 80.3 29.8 25.9
...
2021 02 24 03 10 56.7 +21 59 24 1.9919 1.9989 76.0 28.7 26.1
...
2021 03 11 03 41 15.4 +23 08 00 2.2315 2.0763 68.1 26.3 26.3
A. U. Tomatic (C) Copyright 2021 MPC M.P.E.C. 2021-C118
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