MPEC 2023-F198 : 2020 FL4
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M.P.E.C. 2023-F198 Issued 2023 March 29, 00:56 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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 FL4
Revision to MPEC 2020-F128
Additional Observations:
K20F04L C2023 03 27.52702814 09 32.194+03 06 52.05 20.87wUEF198F51
K20F04L C2023 03 27.53769614 09 35.387+03 05 24.12 21.28wUEF198F51
K20F04L C2023 03 27.55899414 09 41.832+03 02 28.24 21.62wUEF198F51
K20F04L C2023 03 27.63390314 10 05.139+02 52 07.18 21.57GVEF198F51
K20F04L C2023 03 27.63455414 10 05.320+02 52 02.60 21.32GVEF198F51
K20F04L |C2023 03 28.25150 14 14 11.43 +01 27 14.7 21.1 GVEF198807
K20F04L |C2023 03 28.25703 14 14 13.25 +01 26 26.7 21.1 GVEF198807
K20F04L |C2023 03 28.26256 14 14 15.04 +01 25 38.6 21.5 GVEF198807
K20F04L KC2023 03 28.31419914 14 39.140+01 14 46.20 VEF198I52
K20F04L KC2023 03 28.31603714 14 39.770+01 14 31.10 20.82GVEF198I52
K20F04L KC2023 03 28.31787614 14 40.360+01 14 14.90 22.23GVEF198I52
K20F04L KC2023 03 28.32117014 14 41.490+01 13 45.70 21.05GVEF198I52
K20F04L 3C2023 03 28.48022514 15 42.321+00 50 56.69 21.31GVEF198T14
K20F04L 3C2023 03 28.48120314 15 42.637+00 50 47.97 21.23GVEF198T14
K20F04L 3C2023 03 28.48218514 15 42.954+00 50 39.20 21.32GVEF198T14
Observer details:
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes, L.
Horn. 1.00-m f/10.0 astrograph + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, I.
Smith, K. Chambers. Measurers K. Chambers, S. Chastel, T. de Boer, J.
Fairlamb, H. Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer J. B. Fazekas.
Measurers E. J. Christensen, D. Fay, J. B. Fazekas, D. C. Fuls, A. R.
Gibbs, A. D. Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M.
Larson, G. J. Leonard, D. Rankin, R. L. Seaman, A. Serrano, F. C. Shelly,
K. W. Wierzchos. 1.0-m prime focus + CCD.
T14 Canada-France-Hawaii Telescope, Maunakea. Observers R. Wainscoat, L.
Wells, E. Bertin. Measurers R. Weryk, R. Wainscoat. 3.6-m Canada-France-
Hawaii Telescope + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
230327 F51 30- 17- 230328 T14 30- 16- E2020-G74 -2.18 days
Orbital elements:
2020 FL4 Earth MOID = 0.0247 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 322.60150 (2000.0) P Q
n 0.65771136 Peri. 200.40962 -0.82222763 +0.56865746
a 1.3095211 Node 14.32251 -0.50788601 -0.71412437
e 0.2221762 Incl. 5.54030 -0.25689206 -0.40823409
P 1.50 H 26.96 G 0.15 U 0
Residuals in seconds of arc
200324 G96 0.0 0.3- 200325 I52 0.1+ 0.3- 230327 F51 0.1- 0.6+
200324 G96 0.4+ 0.2+ 200325 I52 (0.5- 1.0+) 230327 F51 0.1- 0.4+
200324 G96 0.5+ 0.3+ 200325 I52 0.1+ 0.8+ 230327 F51 0.2+ 0.0
200324 G96 0.1- 0.2+ 200325 I52 0.1- 1.0+ 230327 F51 0.2+ 0.2-
200324 G96 0.1+ 0.1- 200402 204 0.3- 0.2- 230327 F51 0.2- 0.6+
200324 G96 0.1+ 0.6- 200402 204 0.0 0.7- 230328 807 (0.6- 0.5-)
200324 G96 0.8+ 0.5- 200402 G96 0.3- 0.1- 230328 807 0.0 0.2-
200324 G96 0.1+ 0.0 200402 G96 0.2- 0.5+ 230328 807 0.1+ 0.0
200324 033 0.1- 0.4- 200402 G96 0.2+ 0.2+ 230328 I52 0.0 0.6-
200324 033 0.2- 0.2- 200402 G96 0.0 0.2+ 230328 I52 0.3+ 0.4+
200324 033 0.3- 0.0 200403 L01 0.3- 0.0 230328 I52 0.0 0.3+
200324 033 0.1- 0.6- 200403 L01 0.1+ 0.2+ 230328 I52 0.6+ 0.1+
200325 J95 0.2- 0.7- 200403 L01 0.0 0.5+ 230328 T14 0.0 0.0
200325 033 0.4- 0.3- 200403 G96 0.3+ 0.0 230328 T14 0.0 0.0
200325 033 0.3- 0.2- 200403 G96 0.0 0.0 230328 T14 0.0 0.0
200325 J95 0.1+ 0.4- 200403 G96 0.3+ 0.2-
200325 033 0.4- 0.2- 200403 G96 0.2+ 0.1+
Ephemeris:
2020 FL4 a,e,i = 1.31, 0.22, 6 q = 1.0186
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 02 27 12 36 35.3 +25 42 47 0.1330 1.1042 147.0 29.2 24.1
...
2023 03 14 13 11 58.9 +20 42 45 0.08221 1.0660 150.1 27.7 22.9
...
2023 03 22 13 40 43.8 +13 02 00 0.05980 1.0495 152.3 26.2 22.1
...
2023 03 28 14 12 31.9 +02 01 54 0.04629 1.0392 152.7 26.2 21.6
2023 03 29 14 19 10.0 -00 26 38 0.04444 1.0377 152.2 26.7 21.5
2023 03 30 14 26 16.9 -03 07 39 0.04274 1.0362 151.5 27.4 21.4
...
2023 04 05 15 21 36.4 -23 04 28 0.03643 1.0285 140.5 38.3 21.4
...
2023 04 13 17 16 45.3 -48 24 24 0.04022 1.0215 117.2 60.8 22.2
...
2023 04 28 20 44 40.9 -58 51 40 0.06818 1.0190 98.6 77.6 23.9
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-F198
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