MPEC 2023-Q08 : 2021 PD7
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M.P.E.C. 2023-Q08 Issued 2023 August 17, 14:05 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 PD7
Revision to MPEC 2021-P142
Additional Observations:
K21P07D 0C2023 08 14.58167801 13 01.751+10 27 10.12 23.61GVEQ008T14
K21P07D 0C2023 08 14.58358601 13 01.480+10 27 09.28 23.73GVEQ008T14
K21P07D 0C2023 08 14.58549201 13 01.207+10 27 08.26 23.75GVEQ008T14
K21P07D 0C2023 08 15.57578101 10 41.963+10 18 50.73 22.56GVEQ008T14
K21P07D 0C2023 08 15.57768201 10 41.682+10 18 49.76 22.56GVEQ008T14
K21P07D 0C2023 08 15.57958501 10 41.401+10 18 48.77 22.54GVEQ008T14
Observer details:
T14 Canada-France-Hawaii Telescope, Maunakea. Observer L. Wells. Measurer D.
J. Tholen. 3.6-m f/4.1 reflector + 1024 x 2306 pixels Megacam.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
230814 T14 0.05+ 0.03+ 230815 T14 0.06+ 0.03+ MPO750185 +0.30 days
Orbital elements:
2021 PD7 Earth MOID = 0.0113 AU
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5 Veres
M 60.48802 (2000.0) P Q
n 0.51514340 Peri. 242.91903 -0.84056256 +0.54020765
a 1.5411703 Node 329.72856 -0.46431985 -0.75686052
e 0.7024984 Incl. 4.59415 -0.27903703 -0.36788293
P 1.91 H 22.02 G 0.15 U 2
Residuals in seconds of arc
210810 T08 0.5+ 0.1- 210812 U83 2.1- 0.4- 210826 F52 0.1+ 0.0
210810 T08 1.8+ 0.8+ 210812 U83 1.2- 0.8- 210826 F52 0.1- 0.1-
210810 T08 0.1+ 0.1+ 210812 U83 1.8- 0.9- 210826 F52 0.5+ 0.1-
210810 T08 0.1- 0.2+ 210812 U83 2.2- 0.6- 210827 807 0.2- 0.4-
210811 033 0.3- 0.6+ 210813 J95 0.4- 0.1+ 210827 807 0.2- 0.3-
210811 033 0.0 0.2+ 210813 J95 0.0 0.2- 210827 807 0.3- 0.0
210811 033 0.2+ 0.1+ 210813 033 0.1- 0.2+ 210829 T08 0.4+ 0.2-
210811 L01 0.9- 0.1- 210813 033 0.3- 0.0 210829 T08 0.1- 0.1+
210811 L01 0.4- 0.1- 210813 033 0.0 0.1+ 210829 T08 0.5+ 0.3+
210811 L01 0.1+ 0.1- 210813 Z99 0.1- 0.4- 210829 T08 0.3+ 0.8-
210811 L01 0.5- 0.1- 210813 Z99 0.3- 0.2- 210830 F51 0.1+ 0.0
210811 L01 0.2+ 0.3+ 210813 Z99 0.3- 0.1- 210830 F51 0.0 0.1+
210811 T12 0.1+ 0.0 210814 A17 0.5+ 0.2+ 210830 F51 0.0 0.0
210811 T12 0.0 0.0 210814 A17 0.0 0.3- 210830 F51 0.1- 0.1+
210811 247 0.8- 0.3- 210814 A17 0.6+ 0.1+ 210907 F51 0.1- 0.0
210811 247 1.8- 1.3- 210815 033 0.0 0.2+ 210907 F51 0.0 0.2+
210811 247 0.5- 1.1- 210815 033 0.0 0.2- 210907 F51 0.0 0.1+
210812 247 0.5- 1.0- 210815 033 0.0 0.1- 210907 F51 0.2+ 0.1-
210812 A17 0.1+ 0.2- 210816 033 0.2+ 0.3- 210908 F51 0.1- 0.1+
210812 A17 0.3+ 0.2+ 210816 033 0.7- 0.2- 210908 F51 0.1- 0.2+
210812 A17 0.0 0.2- 210816 033 1.4- 0.1+ 210908 F51 0.0 0.1+
210812 204 0.2- 0.0 210816 T05 0.5- 0.6- 210908 F51 0.1+ 0.2+
210812 204 0.1+ 0.2- 210816 T05 0.2- 0.7- 230814 T14 0.1- 0.0
210812 204 0.0 0.2- 210816 T05 0.4+ 0.2+ 230814 T14 0.0 0.0
210812 J04 0.0 0.2+ 210816 T05 0.9+ 0.3+ 230814 T14 0.0 0.0
210812 J04 0.0 0.2+ 210820 F51 0.2+ 0.1+ 230815 T14 0.0 0.0
210812 U83 1.0- 0.4- 210820 F51 0.1- 0.0 230815 T14 0.0 0.0
210812 U83 2.3- 0.9- 210820 F51 0.0 0.0 230815 T14 0.0 0.0
Ephemeris:
2021 PD7 a,e,i = 1.54, 0.70, 5 q = 0.4585
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2023 07 18 01 57 03.5 +11 56 59 0.6587 1.1461 83.4 61.8 23.6
...
2023 08 02 01 37 49.8 +11 38 25 0.6569 1.3208 102.3 48.7 23.5
...
2023 08 10 01 23 04.8 +11 00 17 0.6526 1.4076 113.5 41.3 23.5
...
2023 08 16 01 09 41.4 +10 15 13 0.6514 1.4699 122.6 35.5 23.4
2023 08 17 01 07 16.5 +10 06 15 0.6516 1.4800 124.1 34.5 23.4
2023 08 18 01 04 48.5 +09 56 52 0.6519 1.4901 125.7 33.5 23.4
...
2023 08 24 00 49 05.9 +08 52 07 0.6568 1.5493 135.4 27.3 23.3
...
2023 09 01 00 26 31.3 +07 06 18 0.6747 1.6249 148.9 18.7 23.2
...
2023 09 16 23 45 04.3 +03 20 47 0.7542 1.7566 173.0 4.0 23.0
A. U. Tomatic (C) Copyright 2023 MPC M.P.E.C. 2023-Q08
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