MPEC 2023-L36 : 2021 LC7
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M.P.E.C. 2023-L36 Issued 2023 June 8, 14:07 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
2021 LC7
Revision to MPEC 2021-M02
Additional Observations:
K21L07C C2012 11 02.40786901 55 15.776-07 44 16.12 21.35GVEL036F51
K21L07C C2012 11 02.42058801 55 13.077-07 44 42.58 21.33GVEL036F51
K21L07C C2012 11 04.40217301 48 20.252-08 53 25.62 20.97GVEL036F51
K21L07C KC2014 09 18.50195202 19 11.393+04 55 56.17 22.43GVEL036F51
K21L07C C2014 10 02.47497402 06 33.021+01 57 27.58 22.95GVEL036F51
K21L07C KC2014 10 13.38538001 48 35.518-01 14 37.07 22.54GVEL036F51
K21L07C C2014 10 25.41398401 20 48.473-05 23 51.57 21.91GVEL036F51
K21L07C C2014 10 25.43960501 20 44.351-05 24 23.96 22.26GVEL036F51
K21L07C C2014 10 25.45245401 20 42.351-05 24 40.45 22.17GVEL036F51
K21L07C C2019 06 28.52170821 10 56.801-09 05 57.31 22.52GVEL036F51
K21L07C C2019 06 28.53334621 10 55.135-09 06 06.40 22.04GVEL036F51
K21L07C C2019 06 28.54498021 10 53.457-09 06 15.70 22.66GVEL036F51
K21L07C C2019 06 28.55660621 10 51.761-09 06 25.22 23.32GVEL036F51
K21L07C C2019 06 30.46709121 06 23.251-09 32 16.71 22.84GVEL036F51
K21L07C C2019 06 30.49177321 06 19.621-09 32 37.41 22.80GVEL036F51
K21L07C C2019 06 30.50415621 06 17.769-09 32 47.02 22.26GVEL036F51
K21L07C C2019 07 04.52255120 56 29.887-10 28 56.77 22.52GVEL036F52
K21L07C C2019 07 04.53223420 56 28.387-10 29 05.03 22.70GVEL036F52
K21L07C C2019 07 25.37730820 05 13.215-15 13 41.50 23.04GVEL036F51
K21L07C C2019 07 25.38932920 05 11.562-15 13 50.29 23.08GVEL036F51
K21L07C C2019 07 25.40133320 05 09.930-15 13 58.83 22.49GVEL036F51
K21L07C C2020 10 14.41544400 15 13.360-07 02 45.29 22.91GVEL036F51
K21L07C C2020 10 14.42661000 15 12.140-07 02 52.99 23.66GVEL036F51
K21L07C C2020 10 14.44886500 15 09.656-07 03 08.95 22.53GVEL036F51
K21L07C KC2023 06 07.41396821 56 45.096+18 37 12.76 19.98GVEL036I52
K21L07C KC2023 06 07.41477021 56 44.556+18 37 09.30 20.22GVEL036I52
K21L07C KC2023 06 07.41558121 56 43.991+18 37 06.13 19.94GVEL036I52
K21L07C KC2023 06 07.41638621 56 43.476+18 37 02.46 20.27GVEL036I52
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, P.
Minguez, A. Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M.
Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien +
CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, P. Minguez, A. Schultz, I. Smith. Measurers S. Chastel, J.
Fairlamb, M. Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m
Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer J. K. Hogan. 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.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
121102 F51 0.80- 0.02- 230607 I52 0.17- 0.53- E2021-NB8 +0.03 days
Orbital elements:
2021 LC7 Earth MOID = 0.0910 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 336.46783 (2000.0) P Q
n 0.48240932 Peri. 16.11671 -0.93704862 -0.34390027
a 1.6101225 Node 143.58670 +0.30805408 -0.89582208
e 0.6802729 Incl. 5.85952 +0.16444624 -0.28148786
P 2.04 H 21.45 G 0.15 U 1
Residuals in seconds of arc
121102 F51 0.3+ 0.1+ 201014 F51 0.2+ 0.1+ 210616 V06 0.3+ 0.2-
121102 F51 0.1- 0.3- 201014 F51 0.1- 0.8+ 210617 H21 0.1- 0.2-
121104 F51 0.1- 0.1- 210609 G96 0.2+ 1.3- 210617 H21 0.2- 0.3-
140918 F51 0.2+ 0.2+ 210609 G96 0.7+ 0.3+ 210617 H21 0.3- 0.4-
141002 F51 0.1+ 0.1- 210614 F51 0.3+ 0.3+ 210617 V06 0.0 0.0
141013 F51 0.1+ 0.5- 210614 F51 0.2- 0.1- 210617 V06 0.3- 0.0
141025 F51 0.2- 0.1- 210614 F51 0.2+ 0.1+ 210617 V06 0.1+ 0.3+
141025 F51 0.5- 0.2+ 210615 H21 0.5+ 0.2+ 210620 291 0.2- 0.2+
141025 F51 0.4+ 0.1+ 210615 H21 0.2+ 0.3+ 210620 291 0.2+ 0.0
190628 F51 0.2- 0.1- 210615 H21 0.2+ 0.1+ 210620 291 0.0 0.1+
190628 F51 0.1- 0.2+ 210615 568 0.1- 0.1+ 210628 695 0.2- 0.1-
190628 F51 0.2- 0.2+ 210615 568 0.1- 0.0 210628 695 0.0 0.1+
190628 F51 0.6- 0.0 210615 568 0.0 0.0 210710 F51 0.1- 0.1-
190630 F51 0.2- 0.0 210615 568 0.0 0.1+ 210710 F51 0.0 0.1+
190630 F51 0.1- 0.3- 210615 568 0.0 0.0 210710 F51 0.1- 0.0
190630 F51 0.4- 0.3+ 210615 568 0.0 0.0 210713 F51 0.0 0.2+
190704 F52 0.0 0.1+ 210615 568 0.0 0.0 210713 F51 0.0 0.0
190704 F52 0.1- 0.0 210615 568 0.0 0.1+ 210713 F51 0.3+ 0.0
190725 F51 0.0 0.0 210615 568 0.0 0.0 230607 I52 0.0 0.1-
190725 F51 0.1- 0.1- 210616 V06 0.4- 0.2+ 230607 I52 0.0 0.1-
190725 F51 0.0 0.1+ 210616 V06 0.1- 0.2- 230607 I52 0.3- 0.3+
201014 F51 0.0 0.5- 210616 V06 0.1+ 0.2+ 230607 I52 0.1+ 0.1+
Ephemeris:
2021 LC7 a,e,i = 1.61, 0.68, 6 q = 0.5148
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 05 09 02 47 06.9 +28 54 04 0.3310 0.6893 12.2 162.0 29.9
...
2023 05 24 00 43 28.2 +30 07 15 0.2157 0.8742 45.2 124.7 23.0
...
2023 06 01 23 10 56.2 +25 30 25 0.1902 0.9743 72.7 96.6 21.3
...
2023 06 07 22 01 17.5 +19 07 37 0.1883 1.0480 95.0 74.7 20.5
2023 06 08 21 50 21.3 +17 54 22 0.1895 1.0602 98.7 71.1 20.5
2023 06 09 21 39 41.4 +16 39 41 0.1911 1.0723 102.4 67.6 20.4
...
2023 06 15 20 42 16.1 +09 08 43 0.2095 1.1437 123.1 48.1 20.2
...
2023 06 23 19 44 15.9 +00 30 52 0.2551 1.2359 145.9 27.5 20.2
...
2023 07 08 18 41 15.6 -09 33 53 0.3908 1.3986 165.7 10.4 20.8
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-L36
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