[Iaude] MPEC X135: 2020 XA4 [a=2.65,e=0.52,i=17.3,H=21.1]
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Sat Dec 12 09:20:31 EST 2020
M.P.E.C. 2020-X135 Issued 2020 December 12, 14:19 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2020 XA4
Observations:
K20X04A* C2020 12 09.33641005 41 04.33 -15 14 24.9 20.98GVEX135G96
K20X04A C2020 12 09.34152405 41 04.21 -15 14 22.5 21.27GVEX135G96
K20X04A C2020 12 09.34664405 41 04.12 -15 14 20.3 22.06GVEX135G96
K20X04A KC2020 12 09.41296605 41 02.77 -15 13 56.1 21.16GVEX135I52
K20X04A KC2020 12 09.41933005 41 02.64 -15 13 52.9 21.03GVEX135I52
K20X04A KC2020 12 09.42569205 41 02.52 -15 13 50.8 20.48GVEX135I52
K20X04A KC2020 12 09.59516205 41 00.43 -15 12 26.0 21.3 GVEX135474
K20X04A KC2020 12 09.59868305 41 00.37 -15 12 25.1 20.9 GVEX135474
K20X04A KC2020 12 09.60220205 41 00.28 -15 12 23.2 21.6 GVEX135474
K20X04A KC2020 12 09.60572105 41 00.22 -15 12 21.8 21.3 GVEX135474
K20X04A C2020 12 10.44114505 40 48.205-15 07 00.46 21.36wUEX135F51
K20X04A C2020 12 10.45315205 40 47.931-15 06 55.29 21.45wUEX135F51
K20X04A C2020 12 10.46516705 40 47.664-15 06 50.07 21.97wUEX135F51
K20X04A C2020 12 10.47719205 40 47.386-15 06 44.63 21.77wUEX135F51
K20X04A HC2020 12 12.25309405 40 19.09 -14 52 13.3 20.64GVEX135V06
K20X04A HC2020 12 12.25458005 40 19.02 -14 52 12.6 VEX135V06
K20X04A HC2020 12 12.25933305 40 18.95 -14 52 11.0 VEX135V06
K20X04A HC2020 12 12.26082005 40 18.91 -14 52 10.0 21.11GVEX135V06
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore, P. M.
Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, M.
Willman. Measurers K. Chambers, S. Chastel, T. de Boer, L. Denneau, J.
Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo,
R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer K. W. Wierzchos. 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. 1.5-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.
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.
Orbital elements:
2020 XA4 Earth MOID = 0.2890 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 349.17532 (2000.0) P Q
n 0.22894264 Peri. 355.78230 -0.52449101 -0.81641061
a 2.6463763 Node 125.66991 +0.78960224 -0.57257328
e 0.5190141 Incl. 17.30304 +0.31849252 +0.07505707
P 4.31 H 21.1 G 0.15 U 8
Residuals in seconds of arc
201209 G96 0.2+ 0.4- 201209 474 0.1+ 0.0 201210 F51 0.0 0.1-
201209 G96 0.1- 0.1+ 201209 474 0.2+ 0.5- 201210 F51 0.1- 0.1+
201209 G96 0.2+ 0.5+ 201209 474 0.1- 0.1+ 201212 V06 0.2+ 0.5+
201209 I52 0.1+ 0.3- 201209 474 0.0 0.1+ 201212 V06 0.3- 0.4+
201209 I52 0.0 0.4+ 201210 F51 0.0 0.0 201212 V06 0.3+ 0.5-
201209 I52 0.1+ 0.1+ 201210 F51 0.1- 0.1- 201212 V06 0.2+ 0.3-
Ephemeris:
2020 XA4 a,e,i = 2.65, 0.52, 17 q = 1.2729
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 11 12 05 37 38.7 -13 29 31 0.6944 1.5429 131.9 28.5 22.5
...
2020 11 27 05 42 08.9 -15 23 23 0.5757 1.4629 137.3 27.2 21.9
...
2020 12 05 05 41 53.1 -15 31 43 0.5217 1.4241 139.7 26.6 21.7
...
2020 12 11 05 40 39.4 -15 02 38 0.4855 1.3971 141.4 26.1 21.4
2020 12 12 05 40 23.0 -14 54 18 0.4798 1.3928 141.6 26.0 21.4
2020 12 13 05 40 05.6 -14 44 53 0.4742 1.3886 141.8 26.0 21.4
...
2020 12 19 05 38 07.4 -13 23 58 0.4431 1.3645 143.1 25.6 21.2
...
2020 12 27 05 35 28.2 -10 24 36 0.4081 1.3361 144.3 25.5 21.0
...
2021 01 11 05 34 06.7 -00 54 50 0.3650 1.2961 143.8 26.6 20.7
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-X135
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