MPEC 2020-X94 : 2016 LD9
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M.P.E.C. 2020-X94 Issued 2020 December 10, 13:27 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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
2016 LD9
Revision to MPEC 2016-L69
Additional Observations:
K16L09D C2020 11 23.29146 04 01 18.73 +18 00 22.0 21.4 GVEX094G96
K16L09D C2020 11 23.29825 04 01 17.55 +18 00 22.2 21.4 GVEX094G96
K16L09D C2020 11 23.30334 04 01 16.74 +18 00 21.9 VEX094G96
K16L09D C2020 12 05.33223 03 19 49.20 +17 33 08.4 20.8 GVEX094G96
K16L09D C2020 12 05.33736 03 19 47.79 +17 33 06.5 VEX094G96
K16L09D C2020 12 05.34249 03 19 46.33 +17 33 05.6 VEX094G96
K16L09D C2020 12 05.34761 03 19 44.90 +17 33 05.0 VEX094G96
K16L09D C2020 12 07.29404 03 10 47.44 +17 24 52.1 20.9 GVEX094V00
K16L09D C2020 12 07.29914 03 10 45.92 +17 24 50.6 20.9 GVEX094V00
K16L09D C2020 12 07.30423 03 10 44.41 +17 24 49.1 20.8 GVEX094V00
K16L09D C2020 12 07.30931 03 10 42.88 +17 24 47.6 20.8 GVEX094V00
K16L09D KC2020 12 07.34985 03 10 30.79 +17 24 35.0 20.7 RoEX094291
K16L09D KC2020 12 07.35434 03 10 29.45 +17 24 33.8 20.7 RoEX094291
K16L09D KC2020 12 07.35882 03 10 28.14 +17 24 32.2 20.6 RoEX094291
K16L09D KC2020 12 07.38124603 10 21.50 +17 24 24.2 20.98GVEX094V06
K16L09D KC2020 12 07.38259703 10 21.10 +17 24 23.7 21.10GVEX094V06
K16L09D KC2020 12 07.38394803 10 20.75 +17 24 23.0 21.23GVEX094V06
K16L09D KC2020 12 08.13399003 06 44.09 +17 20 48.1 20.91GVEX094V06
K16L09D KC2020 12 08.13532203 06 43.69 +17 20 47.9 20.88GVEX094V06
K16L09D KC2020 12 08.13665403 06 43.24 +17 20 47.5 20.74GVEX094V06
K16L09D KC2020 12 08.13798603 06 42.85 +17 20 47.1 20.52GVEX094V06
K16L09D KC2020 12 08.18743 03 06 27.56 +17 20 33.8 20.2 RoEX094291
K16L09D KC2020 12 08.19122 03 06 26.37 +17 20 32.2 20.5 RoEX094291
K16L09D KC2020 12 08.19500 03 06 25.21 +17 20 31.4 20.4 RoEX094291
K16L09D 1C2020 12 08.73975 03 03 42.36 +17 17 28.8 20.7 VVEX094033
K16L09D 1C2020 12 08.74264 03 03 41.40 +17 17 27.6 21.0 VVEX094033
K16L09D 1C2020 12 08.74554 03 03 40.49 +17 17 27.2 20.4 VVEX094033
K16L09D KC2020 12 09.06500 03 02 03.44 +17 15 52.7 20.4 RoEX094291
K16L09D KC2020 12 09.06808 03 02 02.45 +17 15 52.2 20.7 RoEX094291
K16L09D KC2020 12 09.07118 03 02 01.49 +17 15 51.3 20.5 RoEX094291
K16L09D KC2020 12 09.15735503 01 33.90 +17 15 23.4 20.5 VqEX094858
K16L09D KC2020 12 09.16445603 01 31.77 +17 15 23.0 20.34GVEX094I52
K16L09D KC2020 12 09.16613603 01 31.22 +17 15 22.6 20.56GVEX094I52
K16L09D KC2020 12 09.16781503 01 30.70 +17 15 22.0 20.49GVEX094I52
K16L09D KC2020 12 09.16949403 01 30.14 +17 15 21.2 20.38GVEX094I52
K16L09D KC2020 12 09.17097003 01 29.48 +17 15 20.0 20.8 VqEX094858
K16L09D KC2020 12 09.18339803 01 25.51 +17 15 15.8 21.0 VqEX094858
K16L09D KC2020 12 10.14862302 56 22.29 +17 09 39.5 20.8 VqEX094858
K16L09D KC2020 12 10.15565202 56 19.94 +17 09 37.0 21.0 VqEX094858
K16L09D KC2020 12 10.16264002 56 17.60 +17 09 34.3 20.5 VqEX094858
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
291 LPL/Spacewatch II. Observers T. H. Bressi, M. T. Read. 1.8-m f/2.7
reflector + CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
G96 Mt. Lemmon Survey. Observers D. C. Fuls, T. A. Pruyne. Measurers D.
Rankin, B. Gray, F. C. Shelly. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. Rankin. Measurers
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m reflector +
CCD.
V00 Kitt Peak-Bok. Observer H. Groeller. Measurers E. J. Christensen, G. A.
Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 2.25-m reflector + CCD.
V06 Catalina Sky Survey-Kuiper. Observer D. C. Fuls. Measurers E. J.
Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
Rankin, R. L. Seaman, 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
201123 G96 5.33- 1.25- 201210 858 6.08- 2.55- MPO419545 -2.49 days
Orbital elements:
2016 LD9 Earth MOID = 0.0055 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 335.33577 (2000.0) P Q
n 0.40660887 Peri. 96.37533 -0.97391761 -0.21613856
a 1.8044775 Node 71.15877 +0.16841713 -0.89254160
e 0.6111640 Incl. 4.18429 +0.15205314 -0.39579492
P 2.42 H 22.4 G 0.15 U 2
Residuals in seconds of arc
160601 C51 0.1- 0.5- 160606 G96 0.2+ 0.1+ 160612 926 0.0 0.6-
160605 703 0.0 0.5+ 160606 G96 0.0 0.1+ 160612 691 1.5+ 0.8-
160605 703 0.7+ 0.2+ 160606 G96 0.1+ 0.1- 160612 926 0.5+ 0.5-
160605 703 0.4- 0.4+ 160606 474 0.2- 0.1+ 160612 926 0.0 0.4-
160605 703 0.1- 0.0 160606 474 0.2- 0.0 160612 691 0.9+ 0.9-
160605 I52 0.1- 0.2+ 160606 474 0.2- 0.0 160612 691 0.3+ 0.4-
160605 I52 0.2- 0.5+ 160606 474 0.2- 0.0 201123 G96 0.8+ 0.3-
160605 I52 0.0 0.2+ 160606 L04 0.1+ 0.4- 201123 G96 0.3- 0.3+
160605 I52 0.1- 0.3+ 160606 L04 0.2- 0.3- 201123 G96 0.1- 0.4+
160605 I52 0.1- 0.1+ 160606 L04 0.1+ 0.1- 201205 G96 0.0 0.3+
160605 I52 0.3- 0.2- 160606 K62 0.4+ 0.2+ 201205 G96 0.0 0.2-
160605 I52 0.2+ 0.0 160606 K62 0.0 0.2+ 201205 G96 0.6- 0.2+
160605 I52 0.0 0.0 160606 K62 0.2+ 0.2- 201205 G96 0.9- 0.9+
160605 T05 (2.8- 0.3+) 160606 958 0.7+ 0.3- 201207 V00 0.0 0.1+
160605 T05 0.1+ 1.1+ 160606 958 0.6+ 0.1- 201207 V00 0.0 0.1+
160605 T05 0.7+ 0.5- 160606 958 0.8+ 0.6- 201207 V00 0.2+ 0.1+
160605 474 0.1- 0.1+ 160607 I52 0.4- 0.0 201207 V00 0.0 0.2+
160605 474 0.0 0.1- 160607 I52 0.0 0.1+ 201207 291 0.3- 0.2+
160605 474 0.2+ 0.0 160607 I52 0.2+ 0.0 201207 291 0.3- 0.4+
160605 474 0.0 0.1+ 160607 I52 0.2- 0.4+ 201207 291 0.1- 0.2+
160605 474 0.1+ 0.1- 160607 926 0.1- 0.0 201207 V06 0.1+ 0.2-
160605 T05 0.1+ 0.0 160607 926 0.2- 0.1- 201207 V06 0.1+ 0.3-
160605 900 0.1+ 0.2- 160607 926 0.3- 0.1- 201207 V06 0.8+ 0.5-
160605 900 0.0 0.1+ 160607 926 0.1- 0.2+ 201208 V06 0.4+ 0.0
160605 900 0.0 0.2+ 160607 926 0.2- 0.3- 201208 V06 0.5+ 0.2+
160605 900 0.5+ 0.0 160607 926 0.1- 0.1- 201208 V06 0.1- 0.2+
160605 470 0.5+ 0.1- 160607 474 0.1+ 0.1+ 201208 V06 0.2+ 0.1+
160605 470 0.1+ 0.8- 160607 474 0.1- 0.1+ 201208 291 0.5- 0.5+
160605 J95 0.1+ 0.2+ 160607 474 0.2- 0.1+ 201208 291 0.7- 0.0
160605 J95 0.3- 0.0 160607 474 0.2+ 0.2+ 201208 291 0.5- 0.3+
160605 J95 0.4- 0.1+ 160608 H21 0.3+ 0.0 201208 033 0.8+ 0.3-
160606 H21 0.3- 0.1+ 160608 H21 0.0 0.2- 201208 033 0.2- 0.7-
160606 H21 0.2- 0.0 160608 H21 0.1- 0.2- 201208 033 0.3- 0.2-
160606 H21 0.1- 0.0 160608 H21 0.2- 0.3- 201209 291 0.1- 0.1-
160606 H21 0.2- 0.1+ 160608 926 0.2- 0.5- 201209 291 0.4- 0.3+
160606 H21 0.4- 0.2+ 160608 926 0.1- 0.1+ 201209 291 0.2- 0.3+
160606 H21 0.2- 0.1+ 160608 926 0.1+ 0.0 201209 858 0.5+ 0.5-
160606 H36 0.2+ 0.2- 160608 G96 0.2+ 0.2- 201209 I52 0.1+ 0.0
160606 H36 0.7+ 0.5- 160608 G96 0.5+ 0.1+ 201209 I52 0.0 0.1+
160606 H36 0.6+ 0.1- 160608 G96 0.4+ 0.3- 201209 I52 0.2+ 0.0
160606 H36 0.4+ 0.3- 160608 G96 0.2- 0.4- 201209 I52 0.1- 0.2-
160606 H36 0.0 0.0 160610 568 0.0 0.0 201209 858 0.2- 0.4+
160606 926 0.1- 0.3+ 160610 568 0.0 0.0 201209 858 0.1+ 0.2+
160606 926 0.0 0.4+ 160610 568 0.0 0.0 201210 858 0.3+ 0.1+
160606 926 0.6+ 0.3- 160611 568 0.0 0.0 201210 858 0.2+ 0.0
160606 G96 0.2+ 0.0 160611 568 0.1- 0.1+ 201210 858 0.0 0.2-
Ephemeris:
2016 LD9 a,e,i = 1.80, 0.61, 4 q = 0.7016
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 11 10 04 25 18.8 +18 09 37 0.5169 1.4864 159.9 13.2 22.6
...
2020 11 25 03 56 44.2 +17 58 15 0.3599 1.3465 176.8 2.3 21.1
...
2020 12 03 03 29 40.9 +17 41 17 0.2931 1.2694 163.4 12.8 21.0
...
2020 12 09 03 02 21.9 +17 16 27 0.2512 1.2107 151.0 23.2 20.9
2020 12 10 02 57 09.4 +17 10 45 0.2449 1.2009 148.8 25.2 20.9
2020 12 11 02 51 44.9 +17 04 29 0.2388 1.1911 146.5 27.2 20.9
...
2020 12 17 02 15 00.5 +16 12 36 0.2063 1.1318 131.7 40.5 20.8
...
2020 12 25 01 13 54.8 +14 08 21 0.1739 1.0529 108.9 62.1 20.9
...
2021 01 09 22 45 15.1 +05 36 49 0.1523 0.9099 57.2 114.7 22.6
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-X94
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