MPEC 2018-X132: 2018 XR4
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M.P.E.C. 2018-X132 Issued 2018 Dec. 15, 18:09 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
2018 XR4
Observations:
K18X04R* C2018 12 14.26688 03 56 56.65 -00 59 43.9 20.1 GVEX132G96
K18X04R C2018 12 14.27294 03 56 46.45 -00 59 26.5 20.1 GVEX132G96
K18X04R C2018 12 14.27901 03 56 36.00 -00 59 08.4 20.0 GVEX132G96
K18X04R C2018 12 14.28510 03 56 25.58 -00 58 50.4 20.1 GVEX132G96
K18X04R C2018 12 14.36027503 54 15.26 -00 55 08.8 20.5 GVEX132H01
K18X04R C2018 12 14.36898 03 54 00.73 -00 54 35.1 19.7 GVEX132I52
K18X04R C2018 12 14.37046 03 53 58.14 -00 54 30.8 20.6 GVEX132I52
K18X04R C2018 12 14.37104503 53 56.61 -00 54 35.8 20.2 GVEX132H01
K18X04R C2018 12 14.37121 03 53 56.85 -00 54 28.3 20.3 GVEX132I52
K18X04R C2018 12 14.37766003 53 45.15 -00 54 15.3 20.0 GVEX132H01
K18X04R C2018 12 14.38306603 53 35.78 -00 53 58.2 19.7 GVEX132H01
K18X04R C2018 12 14.39631 03 53 13.14 -00 53 09.7 19.8 GVEX132I52
K18X04R C2018 12 14.39705 03 53 11.86 -00 53 07.6 20.2 GVEX132I52
K18X04R C2018 12 14.39779 03 53 10.55 -00 53 05.2 20.7 GVEX132I52
K18X04R C2018 12 14.39853 03 53 09.26 -00 53 02.2 20.1 GVEX132I52
K18X04R KC2018 12 14.79510403 41 29.21 -00 31 21.5 20.0 GVEX132L01
K18X04R KC2018 12 14.79599103 41 27.35 -00 31 17.9 20.1 GVEX132L01
K18X04R KC2018 12 14.79678103 41 25.70 -00 31 15.3 19.9 GVEX132L01
K18X04R KC2018 12 14.79866003 41 21.83 -00 31 08.4 20.5 GVEX132L01
K18X04R KC2018 12 14.79905803 41 21.02 -00 31 06.8 20.3 GVEX132L01
K18X04R KC2018 12 14.93342 03 36 32.80 -00 22 29.7 VEX132204
K18X04R KC2018 12 14.94460 03 36 07.92 -00 21 44.6 19.8 GVEX132204
K18X04R HC2018 12 14.95597 03 35 42.52 -00 20 58.8 VEX132204
K18X04R C2018 12 15.25444 03 24 21.42 +00 01 49.0 20.0 GVEX132I52
K18X04R C2018 12 15.25520 03 24 19.44 +00 01 52.4 19.4 GVEX132I52
K18X04R C2018 12 15.25594 03 24 17.52 +00 01 56.4 19.4 GVEX132I52
K18X04R C2018 12 15.25670 03 24 15.62 +00 01 59.9 19.4 GVEX132I52
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector +
CCD.
G96 Mt. Lemmon Survey. Observer A. R. Gibbs. Measurers B. M. Africano,
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, R. L. Seaman,
F. C. Shelly. 1.5-m reflector + 10K CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer H. Groeller.
Measurers B. M. Africano, 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, R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
Orbital elements:
2018 XR4 Earth MOID = 0.0020 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 56.42961 (2000.0) P Q
n 0.80463218 Peri. 88.39199 -0.97637461 -0.12409039
a 1.1448215 Node 84.45410 +0.04217701 -0.91236316
e 0.3579928 Incl. 10.23778 +0.21192857 -0.39012183
P 1.22 H 26.8 G 0.15 U 6
Residuals in seconds of arc
181214 G96 0.2- 0.2+ 181214 H01 0.3- 0.2- 181214 L01 0.4+ 0.3+
181214 G96 1.5+ 0.3- 181214 H01 0.2- 0.0 181214 L01 0.7+ 0.5+
181214 G96 0.0 0.2- 181214 I52 0.1- 0.0 181214 204 0.2- 0.3-
181214 G96 0.1- 0.3- 181214 I52 0.1+ 0.3- 181214 204 0.3- 0.1-
181214 H01 0.4- 0.2+ 181214 I52 0.2- 0.2- 181214 204 0.4- 0.1-
181214 I52 0.0 0.0 181214 I52 0.2- 0.5+ 181215 I52 0.1- 0.4-
181214 I52 0.2- 0.3- 181214 L01 0.3+ 0.6+ 181215 I52 0.3- 0.5-
181214 H01 0.3- 0.2- 181214 L01 0.0 0.8+ 181215 I52 0.3- 0.0
181214 I52 0.0 0.2- 181214 L01 0.1- 0.5+ 181215 I52 0.7+ 0.1-
Ephemeris:
2018 XR4 a,e,i = 1.14, 0.36, 10 q = 0.7350
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 11 15 05 33 09.4 -01 09 57 0.2332 1.1814 141.8 31.2 25.3
...
2018 11 30 05 27 10.4 -02 42 42 0.1223 1.0949 151.1 25.8 23.6
...
2018 12 08 05 07 17.3 -02 49 33 0.06773 1.0466 154.4 24.0 22.2
...
2018 12 14 04 03 42.1 -01 09 24 0.02955 1.0098 148.8 30.3 20.5
2018 12 15 03 34 15.8 -00 13 38 0.02388 1.0036 143.7 35.5 20.2
2018 12 16 02 48 01.1 +01 15 35 0.01884 0.9975 134.4 44.8 19.9
...
2018 12 22 19 41 08.7 +06 38 25 0.03004 0.9605 39.0 139.8 25.9
...
2018 12 30 18 30 41.3 +04 48 16 0.08161 0.9121 28.0 149.6 29.5
...
2019 01 14 18 12 23.8 +01 52 10 0.1892 0.8285 31.7 141.4 29.8
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-X132
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