MPEC 2023-H72 : 2021 MD
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M.P.E.C. 2023-H72 Issued 2023 April 18, 14:13 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 MD
Revision to MPEC 2021-M46
Additional Observations:
K21M00D C2017 03 04.50685111 17 04.875+14 35 05.79 22.88GVEH072F51
K21M00D C2017 03 04.54295111 17 02.569+14 36 08.13 22.97GVEH072F51
K21M00D C2017 03 04.56659611 17 01.060+14 36 48.74 22.77GVEH072F51
K21M00D KC2017 04 26.26597110 44 27.193+34 34 22.12 23.25GVEH072F51
K21M00D C2017 07 14.28041814 36 50.463+12 38 03.48 22.38GVEH072F51
K21M00D C2017 07 14.31593114 37 00.066+12 36 19.17 22.37GVEH072F51
K21M00D C2017 07 14.32125014 37 01.503+12 36 03.45 21.37GVEH072F51
K21M00D C2019 05 15.40120112 24 32.611+43 40 38.44 21.94GVEH072F51
K21M00D C2019 05 15.41230112 24 33.662+43 40 41.64 22.38GVEH072F51
K21M00D C2019 05 21.39155012 37 00.128+44 05 34.67 22.30GVEH072F51
K21M00D C2019 05 21.40654112 37 02.026+44 05 35.34 22.40GVEH072F51
K21M00D C2019 07 01.41523415 13 43.450+31 24 07.93 21.81GVEH072F51
K21M00D C2019 07 01.42818915 13 47.159+31 23 28.10 21.63GVEH072F51
K21M00D C2019 07 05.37383015 33 54.165+27 53 32.44 21.69GVEH072F51
K21M00D C2019 07 05.39941015 34 01.570+27 52 02.60 22.13GVEH072F51
K21M00D C2019 07 05.41215415 34 05.255+27 51 17.94 21.43GVEH072F51
K21M00D C2019 07 25.36822417 14 46.972+04 45 02.04 21.26GVEH072F52
K21M00D C2019 07 25.37979417 14 50.047+04 44 11.50 22.02GVEH072F52
K21M00D C2019 07 25.39137317 14 53.123+04 43 21.24 21.08GVEH072F52
K21M00D C2019 07 25.40298417 14 56.214+04 42 31.33 21.32GVEH072F52
K21M00D C2019 08 24.30583219 11 56.420-19 37 25.11 22.97GVEH072F51
K21M00D C2019 08 24.31610119 11 58.236-19 37 40.25 22.81GVEH072F51
K21M00D C2019 08 24.32635219 12 00.043-19 37 55.40 22.22GVEH072F51
K21M00D C2021 03 19.41940113 35 05.269+13 43 58.64 21.24GVEH072F51
K21M00D C2021 03 19.43144813 35 06.020+13 44 25.52 21.87GVEH072F51
K21M00D C2021 03 19.44352313 35 06.780+13 44 52.44 23.17GVEH072F51
K21M00D C2021 04 29.43104114 38 31.947+43 38 13.53 22.43GVEH072F51
K21M00D C2021 04 29.43382614 38 32.295+43 38 19.42 21.03GVEH072F51
K21M00D C2021 08 13.41487720 31 15.412-12 51 27.43 21.63GVEH072F51
K21M00D C2021 08 13.42846620 31 16.155-12 52 00.43 21.45GVEH072F51
K21M00D C2021 08 13.44653420 31 17.112-12 52 44.33 22.29GVEH072F51
K21M00D C2021 08 15.38428420 33 31.725-14 07 47.59 21.05GVEH072F51
K21M00D C2021 08 15.39603320 33 32.360-14 08 13.61 21.41GVEH072F51
K21M00D C2021 08 15.40775720 33 32.991-14 08 39.93 22.05GVEH072F51
K21M00D C2021 09 10.25307321 03 29.115-22 57 47.76 24.20GVEH072F51
K21M00D C2021 09 10.26405621 03 29.832-22 57 52.65 22.81GVEH072F51
K21M00D C2021 09 10.27505421 03 30.565-22 57 58.30 23.90GVEH072F51
K21M00D C2023 03 17.54611614 47 24.539+05 57 40.76 23.25GVEH072F51
K21M00D C2023 03 17.57002814 47 28.489+05 58 18.38 23.02GVEH072F51
K21M00D C2023 03 17.58199814 47 30.497+05 58 37.29 22.80GVEH072F51
K21M00D C2023 03 21.55301514 59 30.204+07 48 32.39 22.70GVEH072F51
K21M00D C2023 03 30.60685115 29 20.336+12 43 05.56 22.00GVEH072F51
K21M00D C2023 03 30.61750615 29 22.450+12 43 28.21 23.24GVEH072F51
K21M00D C2023 03 30.62816415 29 24.566+12 43 50.73 22.50GVEH072F51
K21M00D KC2023 04 17.47065316 41 26.394+24 09 07.20 21.60GVEH072V06
K21M00D KC2023 04 17.47635716 41 27.917+24 09 20.16 21.29GVEH072V06
K21M00D KC2023 04 17.48206516 41 29.414+24 09 33.41 21.78GVEH072V06
Observer details:
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, 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, A. Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M. Huber,
Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
V06 Catalina Sky Survey-Kuiper. 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. 1.55-m
reflector + 1K CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
170304 F51 0.11+ 0.03+ 230417 V06 0.12+ 0.06+ E2021-P31 +0.03 days
Orbital elements:
2021 MD Earth MOID = 0.1331 AU
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5 Veres
M 313.07666 (2000.0) P Q
n 0.49737607 Peri. 108.66973 -0.26928423 +0.95937876
a 1.5776577 Node 145.35544 -0.92994845 -0.23632074
e 0.3251766 Incl. 8.51080 -0.25036348 -0.15409382
P 1.98 H 23.53 G 0.15 U 0
Residuals in seconds of arc
170304 F51 0.1- 0.2+ 210615 G96 0.4+ 0.7- 210712 033 0.0 0.2+
170304 F51 0.2+ 0.1+ 210615 G96 0.2+ 0.5+ 210712 033 0.1- 0.2+
170304 F51 0.2+ 0.1- 210616 F51 0.0 0.0 210712 033 0.2- 0.4+
170426 F51 0.3- 0.4+ 210616 F51 0.4- 0.0 210802 F51 0.1+ 0.1-
170714 F51 0.1+ 0.0 210616 F51 0.1+ 0.3+ 210802 F51 0.1- 0.2+
170714 F51 0.1- 0.0 210616 L01 0.8- 0.1+ 210802 F51 0.1+ 0.2+
170714 F51 0.2- 0.1- 210616 L01 0.4- 0.3+ 210804 691 0.2+ 0.5-
190515 F51 0.2- 0.1- 210617 L01 0.3- 0.3+ 210804 691 0.0 0.2-
190515 F51 0.2- 0.0 210617 L01 0.3- 0.2+ 210804 691 0.0 0.4-
190521 F51 0.2- 0.1+ 210617 L01 0.1+ 0.1- 210805 291 0.3+ 0.3+
190521 F51 0.5+ 0.2+ 210617 H21 0.0 0.1- 210805 291 0.1+ 0.1+
190701 F51 0.0 0.1+ 210617 H21 0.2- 0.1- 210813 F51 0.1+ 0.1+
190701 F51 0.0 0.0 210617 H21 0.0 0.2- 210813 F51 0.2+ 0.1-
190705 F51 0.0 0.1+ 210617 V06 0.3+ 0.0 210813 F51 0.2- 0.5-
190705 F51 0.2+ 0.1- 210617 V06 0.3- 0.2+ 210815 F51 0.0 0.1+
190705 F51 0.0 0.0 210617 V06 0.4- 0.4+ 210815 F51 0.1+ 0.2+
190725 F52 0.0 0.4+ 210618 H21 0.2+ 0.2+ 210815 F51 0.1+ 0.0
190725 F52 0.2+ 0.1- 210618 H21 0.1- 0.1+ 210910 F51 0.3+ 0.2-
190725 F52 0.2+ 0.2- 210620 G96 0.1- 0.1+ 210910 F51 0.1+ 0.3+
190725 F52 0.2+ 0.3+ 210620 G96 0.3- 0.5- 210910 F51 0.1+ 0.1+
190824 F51 0.0 0.0 210620 G96 0.1+ 0.2- 230317 F51 0.3+ 0.3-
190824 F51 0.1- 0.1+ 210620 G96 0.4+ 0.4- 230317 F51 0.2- 0.2-
190824 F51 0.3- 0.0 210621 291 0.1- 0.0 230317 F51 0.0 0.0
210319 F51 0.2+ 0.0 210621 291 0.0 0.0 230321 F51 0.2- 0.2+
210319 F51 0.1- 0.1- 210621 291 0.1- 0.0 230330 F51 0.3+ 0.2+
210319 F51 0.2- 0.2- 210626 695 0.0 0.0 230330 F51 0.2+ 0.3+
210405 G96 0.2- 0.8- 210626 695 0.0 0.0 230330 F51 0.2+ 0.2+
210405 G96 0.1+ 0.6- 210626 695 0.1- 0.0 230417 V06 0.5- 0.2+
210405 G96 0.3- 0.1+ 210630 V06 0.2+ 0.0 230417 V06 0.1+ 0.2+
210429 F51 0.2- 0.3+ 210630 V06 0.0 0.2+ 230417 V06 0.3+ 0.4+
210429 F51 0.0 0.1+ 210630 V06 0.2- 0.0
Ephemeris:
2021 MD a,e,i = 1.58, 0.33, 9 q = 1.0646
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 03 19 14 51 43.4 +06 36 31 0.3301 1.2501 134.8 34.4 23.0
...
2023 04 03 15 41 35.5 +14 46 50 0.2577 1.1885 132.3 38.4 22.5
...
2023 04 11 16 13 06.4 +19 56 00 0.2310 1.1590 128.2 42.8 22.3
...
2023 04 17 16 39 18.0 +23 51 07 0.2159 1.1389 124.1 46.8 22.3
2023 04 18 16 43 52.6 +24 29 25 0.2138 1.1357 123.4 47.5 22.2
2023 04 19 16 48 30.7 +25 07 16 0.2118 1.1326 122.7 48.3 22.2
...
2023 04 25 17 17 29.7 +28 40 54 0.2018 1.1152 118.1 52.7 22.2
...
2023 05 03 17 58 47.7 +32 32 23 0.1931 1.0954 112.2 58.4 22.3
...
2023 05 18 19 18 47.8 +36 05 09 0.1869 1.0710 103.7 66.6 22.4
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-H72
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