[Iaude] MPEC G117: 2021 LD5 [a=2.12,e=0.43,i=8.9,H=21.37]
mpec at cfa.harvard.edu
mpec at cfa.harvard.edu
Tue Apr 9 10:15:25 EDT 2024
M.P.E.C. 2024-G117 Issued 2024 April 9, 14:14 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2021 LD5
Revision to MPEC 2021-L129
Additional Observations:
K21L05D 0C2024 04 04.57583915 03 09.084+06 16 16.65 22.32GVEG117T12
K21L05D 0C2024 04 04.57746515 03 09.114+06 16 18.10 22.42GVEG117T12
K21L05D 0C2024 04 04.57941915 03 09.152+06 16 19.80 22.54GVEG117T12
K21L05D 0C2024 04 04.58123315 03 09.179+06 16 21.34 22.34GVEG117T12
K21L05D KC2024 04 06.34317115 03 47.45 +06 41 58.2 22.0 GVEG117H21
K21L05D KC2024 04 06.35347715 03 47.63 +06 42 07.4 21.8 GVEG117H21
Observer details:
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 1.3-m f/4.0 astrograph + CCD.
T12 University of Hawaii 88-inch telescope, Maunakea. Observers D. J. Tholen,
M.-T. Hui. Measurer D. J. Tholen. 2.24-m f/10.1 reflector + 2112 x 2112
pixels STA1600 10k CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
240404 T12 21.0+ 6.9+ 240406 H21 21.7+ 7.2+ E2024-EF2 -0.00 days
Orbital elements:
2021 LD5 Earth MOID = 0.1978 AU
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5 Veres
M 326.10367 (2000.0) P Q
n 0.32039022 Peri. 160.10336 +0.16869631 +0.97651269
a 2.1151924 Node 119.40354 -0.92388318 +0.20403950
e 0.4287796 Incl. 8.85012 -0.34348425 -0.06921591
P 3.08 H 21.37 G 0.15 U 0
Residuals in seconds of arc
210608 G96 0.1+ 0.8- 210616 I52 0.2+ 0.2- 210829 F51 0.0 0.1+
210608 G96 0.4+ 0.3+ 210616 I52 0.2- 0.1+ 210829 F51 0.1+ 0.1-
210608 G96 0.6+ 0.4+ 210616 I52 0.2+ 0.1- 210829 F51 0.1- 0.0
210608 G96 0.4+ 0.2- 210621 I52 (1.8- 0.5-) 210829 F51 0.0 0.1-
210608 G96 0.0 0.1+ 210621 I52 0.3- 0.7- 210907 F52 0.1+ 0.1+
210608 G96 0.0 0.0 210621 I52 0.0 0.2- 210907 F52 0.1+ 0.0
210608 G96 0.2+ 0.3- 210709 F51 0.0 0.0 210907 F52 0.0 0.1+
210611 807 0.3- 0.5- 210709 F51 0.0 0.0 210907 F52 0.0 0.1+
210611 807 0.2- 0.1+ 210709 F51 0.0 0.0 210908 F51 0.1- 0.1+
210611 807 0.2+ 0.1+ 210709 F51 0.1- 0.0 210908 F51 0.1+ 0.0
210611 G96 0.1+ 0.1+ 210715 807 0.1- 0.1- 210908 F51 0.1+ 0.0
210611 G96 0.0 0.2+ 210715 807 0.0 0.7- 210908 F51 0.1+ 0.0
210611 G96 0.1+ 0.1+ 210715 807 0.2- 0.3+ 210911 F51 0.0 0.1-
210612 L01 0.3- 0.1- 210730 807 (0.3- 0.8-) 210911 F51 0.1- 0.1-
210612 L01 0.0 0.0 210730 807 0.2- 0.0 210911 F51 0.1- 0.0
210612 L01 0.7- 0.4+ 210730 807 0.3+ 0.4- 210911 F51 0.2- 0.0
210612 L01 0.3- 0.1- 210804 P07 2.3- 0.4- 240404 T12 0.0 0.1+
210612 H21 0.1+ 0.1- 210804 P07 1.0- 0.1+ 240404 T12 0.0 0.1+
210612 H21 0.0 0.2- 210804 P07 0.0 1.0- 240404 T12 0.1+ 0.1+
210612 H21 0.0 0.1- 210804 P07 0.3+ 0.8- 240404 T12 0.0 0.1+
210612 N51 2.5- 1.3+ 210805 F51 0.0 0.1+ 240406 H21 0.2- 0.3-
210612 N51 2.3- 1.4+ 210805 F51 0.1+ 0.0 240406 H21 0.1+ 0.1-
Ephemeris:
2021 LD5 a,e,i = 2.12, 0.43, 9 q = 1.2082
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2024 03 10 14 44 03.6 +01 20 25 0.8809 1.6950 129.4 26.9 23.5
...
2024 03 25 14 57 20.3 +03 54 33 0.7175 1.6113 139.4 23.7 22.8
...
2024 04 02 15 02 03.0 +05 39 41 0.6428 1.5673 144.3 21.8 22.4
...
2024 04 08 15 04 17.7 +07 06 39 0.5926 1.5348 147.6 20.5 22.2
2024 04 09 15 04 33.3 +07 21 37 0.5848 1.5294 148.1 20.3 22.1
2024 04 10 15 04 46.9 +07 36 40 0.5771 1.5241 148.5 20.1 22.1
...
2024 04 16 15 05 27.4 +09 08 01 0.5339 1.4924 150.8 19.2 21.8
...
2024 04 24 15 04 35.2 +11 06 53 0.4841 1.4513 152.1 18.9 21.6
...
2024 05 09 14 58 30.3 +14 01 05 0.4133 1.3792 148.6 22.4 21.2
A. U. Tomatic (C) Copyright 2024 MPC M.P.E.C. 2024-G117
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