MPEC 2018-U54 : 2018 UR1
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M.P.E.C. 2018-U54 Issued 2018 Oct. 22, 10:34 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 UR1
Observations:
K18U01R* C2018 10 20.37155 01 41 37.67 +24 40 30.8 20.3 GVEU054G96
K18U01R C2018 10 20.37632 01 41 37.22 +24 38 37.7 20.5 GVEU054G96
K18U01R C2018 10 20.38109 01 41 36.74 +24 36 43.7 VEU054G96
K18U01R C2018 10 20.38586 01 41 36.27 +24 34 49.3 20.3 GVEU054G96
K18U01R C2018 10 20.42686 01 41 32.23 +24 18 30.1 20.1 GVEU054I52
K18U01R C2018 10 20.42880 01 41 32.00 +24 17 43.5 20.3 GVEU054I52
K18U01R C2018 10 20.43074 01 41 31.84 +24 16 57.6 20.7 GVEU054I52
K18U01R KC2018 10 20.92578 01 40 55.55 +21 01 19.9 20.1 VEU054104
K18U01R KC2018 10 20.93204 01 40 54.95 +20 58 52.3 20.0 VEU054104
K18U01R KC2018 10 20.93515801 40 55.06 +20 57 30.9 20.5 GVEU054J95
K18U01R KC2018 10 20.93830 01 40 54.36 +20 56 24.6 20.0 VEU054104
K18U01R KC2018 10 20.95229401 40 53.57 +20 50 48.0 19.6 GVEU054J95
K18U01R KC2018 10 20.96252301 40 52.57 +20 46 47.6 20.3 GVEU054J95
K18U01R C2018 10 21.20828 01 40 35.15 +19 10 54.5 21.0 GVEU054I52
K18U01R C2018 10 21.21005 01 40 34.95 +19 10 14.0 20.8 GVEU054I52
K18U01R C2018 10 21.21182 01 40 34.87 +19 09 31.7 VEU054I52
K18U01R C2018 10 21.21539 01 40 34.42 +19 08 08.7 VEU054I52
K18U01R C2018 10 21.33889501 40 22.76 +18 20 07.9 20.9 GVEU054H01
K18U01R C2018 10 21.34404301 40 22.31 +18 18 08.3 19.7 GVEU054H01
K18U01R C2018 10 21.35661301 40 21.14 +18 13 15.3 20.0 GVEU054H01
K18U01R C2018 10 21.36669801 40 20.23 +18 09 20.0 20.3 GVEU054H01
K18U01R KC2018 10 22.17404901 39 26.17 +13 02 06.4 20.3 VuEU054H21
K18U01R KC2018 10 22.17813301 39 25.76 +13 00 34.9 20.0 VuEU054H21
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri, M. D. Grazia.
Measurers P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
G96 Mt. Lemmon Survey. Observer A. D. Grauer. Measurers B. M. Africano,
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
H. Groeller, J. A. Johnson, 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.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.76-m f/3.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers R. A. Kowalski,
G. J. Leonard. Measurers B. M. Africano, E. J. Christensen, G. A. Farneth,
D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, J. A. Johnson,
R. A. Kowalski, S. M. Larson, G. J. Leonard, R. L. Seaman, F. C. Shelly.
1.0-m reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2018 UR1 Earth MOID = 0.1610 AU
Epoch 2019 Apr. 27.0 TT = JDT 2458600.5 MPC
M 52.17363 (2000.0) P Q
n 0.23217287 Peri. 138.92674 +0.82391163 +0.39130364
a 2.6217729 Node 208.57186 -0.16589581 +0.85820264
e 0.5964202 Incl. 58.99792 +0.54189317 -0.33221935
P 4.25 H 23.6 G 0.15 U 8
Residuals in seconds of arc
181020 G96 0.2- 0.3- 181020 104 0.1+ 0.5+ 181021 I52 1.3- 0.1+
181020 G96 0.2+ 0.5+ 181020 J95 0.4- 0.6- 181021 H01 0.3- 0.1-
181020 G96 0.2+ 0.4+ 181020 104 0.1+ 0.3+ 181021 H01 0.0 0.3+
181020 G96 0.4+ 0.1- 181020 J95 0.7+ 0.1- 181021 H01 0.2- 0.1+
181020 I52 0.3+ 0.1- 181020 J95 0.2- 0.3+ 181021 H01 0.2- 0.3-
181020 I52 0.3- 0.4- 181021 I52 0.3- 0.1+ 181022 H21 0.9+ 0.1+
181020 I52 0.0 0.1+ 181021 I52 0.8- 0.9+ 181022 H21 0.1- 0.2-
181020 104 0.2+ 0.6+ 181021 I52 0.4+ 0.1-
Ephemeris:
2018 UR1 a,e,i = 2.62, 0.60, 59 q = 1.0581
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 09 22 12 41 13.4 +81 46 35 0.5297 1.0629 81.4 69.1 24.8
...
2018 10 07 02 48 24.3 +82 19 53 0.2917 1.0977 101.9 63.0 23.4
...
2018 10 15 01 52 14.2 +57 02 22 0.1874 1.1288 130.8 41.9 21.9
...
2018 10 21 01 40 49.3 +20 32 52 0.1636 1.1570 170.0 8.6 20.6
2018 10 22 01 39 37.0 +14 07 58 0.1671 1.1621 176.5 3.0 20.3
2018 10 23 01 38 32.4 +08 03 07 0.1726 1.1673 175.9 3.5 20.5
...
2018 10 29 01 34 05.6 -18 20 57 0.2382 1.2003 147.0 26.8 22.1
...
2018 11 06 01 31 40.1 -33 54 38 0.3669 1.2489 127.4 39.1 23.5
...
2018 11 21 01 33 54.9 -42 53 13 0.6381 1.3508 110.5 43.2 24.9
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-U54
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