MPEC 2018-C31 : 2018 CU
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M.P.E.C. 2018-C31 Issued 2018 Feb. 7, 19:16 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 CU
Observations:
K18C00U* C2018 02 04.41825 09 22 28.27 +08 00 05.7 20.4 GUEC031G96
K18C00U C2018 02 04.42338 09 22 27.07 +08 01 04.4 20.1 GUEC031G96
K18C00U C2018 02 04.45050 09 22 20.67 +08 06 19.0 19.7 GUEC031G96
K18C00U C2018 02 04.45564 09 22 19.45 +08 07 18.4 19.7 GUEC031G96
K18C00U C2018 02 04.49504 09 22 10.32 +08 14 51.7 20.1 GUEC031I52
K18C00U C2018 02 04.49545 09 22 10.22 +08 14 57.3 19.6 GUEC031I52
K18C00U C2018 02 04.49586 09 22 10.14 +08 15 02.5 19.7 GUEC031I52
K18C00U C2018 02 04.49628 09 22 10.04 +08 15 06.8 19.5 GUEC031I52
K18C00U KC2018 02 04.90109109 20 46.82 +09 32 05.4 20.1 VSEC031L01
K18C00U KC2018 02 04.90300309 20 46.32 +09 32 25.9 19.9 VSEC031L01
K18C00U KC2018 02 04.90492209 20 45.95 +09 32 49.1 20.2 VSEC031L01
K18C00U KC2018 02 04.90862309 20 45.01 +09 33 29.6 20.3 VSEC031L01
K18C00U C2018 02 05.14988409 19 55.13 +10 18 39.9 20.0 GUEC031H01
K18C00U C2018 02 05.15559 09 19 54.03 +10 19 44.7 20.1 GUEC031I52
K18C00U C2018 02 05.15600 09 19 53.93 +10 19 48.9 20.2 GUEC031I52
K18C00U C2018 02 05.15642 09 19 53.85 +10 19 54.0 20.0 GUEC031I52
K18C00U C2018 02 05.15677809 19 53.58 +10 19 56.9 20.1 GUEC031H01
K18C00U C2018 02 05.15683 09 19 53.78 +10 19 58.8 20.1 GUEC031I52
K18C00U C2018 02 05.16521209 19 51.68 +10 21 31.2 19.8 GUEC031H01
K18C00U C2018 02 05.17060309 19 50.46 +10 22 31.1 19.8 GUEC031H01
K18C00U KC2018 02 05.27176109 19 25.97 +10 41 08.9 20.1 VuEC031H21
K18C00U KC2018 02 05.27642609 19 24.89 +10 42 00.3 20.1 VuEC031H21
K18C00U KC2018 02 05.28216509 19 23.55 +10 43 03.6 20.3 VuEC031H21
K18C00U C2018 02 06.16474 09 16 23.41 +13 20 44.8 19.6 GUEC031I52
K18C00U C2018 02 06.16516 09 16 23.38 +13 20 49.5 19.4 GUEC031I52
K18C00U C2018 02 06.16557 09 16 23.21 +13 20 53.3 20.0 GUEC031I52
K18C00U C2018 02 06.16599 09 16 23.14 +13 20 57.3 20.2 GUEC031I52
K18C00U KC2018 02 06.22691 09 16 09.39 +13 31 35.7 oEC031711
K18C00U KC2018 02 06.22960 09 16 08.77 +13 32 03.8 oEC031711
K18C00U KC2018 02 06.23233 09 16 08.16 +13 32 31.8 oEC031711
K18C00U KC2018 02 07.23296 09 12 48.97 +16 19 21.9 oEC031711
K18C00U KC2018 02 07.23555 09 12 48.41 +16 19 46.8 oEC031711
K18C00U KC2018 02 07.23819 09 12 47.85 +16 20 12.3 oEC031711
K18C00U KC2018 02 07.24875 09 12 45.03 +16 21 46.8 19.2 RqEC031H36
K18C00U KC2018 02 07.25368 09 12 44.02 +16 22 34.1 19.7 RqEC031H36
K18C00U KC2018 02 07.31911 09 12 29.99 +16 33 02.1 19.4 RqEC031H36
K18C00U KC2018 02 07.32280 09 12 29.26 +16 33 36.9 19.4 RqEC031H36
K18C00U KC2018 02 07.34972 09 12 24.27 +16 38 03.0 17.5 RoEC031691
K18C00U KC2018 02 07.36769 09 12 20.46 +16 40 54.0 18.3 RoEC031691
Observer details:
691 Steward Observatory, Kitt Peak. Observer J. V. Scotti. 0.9-m f/3
reflector + CCD.
711 McDonald Observatory. Observer J. G. Ries. 2.1-m reflector + CCD + focal
reducer.
G96 Mt. Lemmon Survey. Observer J. A. Johnson. Measurers E. J. Christensen,
D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
S. M. Larson, G. J. Leonard, R. G. Matheny, 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 reflector + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.61-m f/4.5
astrograph + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. C. Fuls. Measurers
E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson,
R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny, 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 CU Earth MOID = 0.1098 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 123.11495 (2000.0) P Q
n 0.90981266 Peri. 237.97661 +0.90927546 -0.30449416
a 1.0547950 Node 137.75844 +0.33734485 +0.93847255
e 0.3500864 Incl. 24.96421 -0.24375517 +0.16294961
P 1.08 H 23.7 G 0.15 U 8
Residuals in seconds of arc
180204 G96 0.7- 0.4+ 180205 I52 0.1+ 0.1+ 180206 I52 0.1- 0.5-
180204 G96 0.4- 0.3- 180205 I52 0.0 0.3- 180206 711 0.5- 0.1-
180204 G96 0.1- 0.4+ 180205 I52 0.2+ 0.1+ 180206 711 0.8- 0.0
180204 G96 0.2- 0.3+ 180205 H01 0.1- 0.0 180206 711 0.7- 0.3-
180204 I52 0.1+ 1.1- 180205 I52 0.5+ 0.4+ 180207 711 0.2- 0.4+
180204 I52 0.0 0.2- 180205 H01 0.0 0.2+ 180207 711 0.3- 0.3+
180204 I52 0.2+ 0.3+ 180205 H01 0.0 0.0 180207 711 0.1- 0.2+
180204 I52 0.2+ 0.2- 180205 H21 0.2+ 0.0 180207 H36 0.3- 0.0
180204 L01 0.6+ 0.5+ 180205 H21 0.2+ 0.1- 180207 H36 0.4+ 0.2-
180204 L01 0.2- 0.6- 180205 H21 0.1+ 0.0 180207 H36 0.3- 0.5-
180204 L01 0.9+ 0.9+ 180206 I52 0.2- 0.1+ 180207 H36 0.5+ 1.0-
180204 L01 0.3- 0.4- 180206 I52 0.7+ 0.4+ 180207 691 0.0 0.4+
180205 H01 0.1- 0.0 180206 I52 0.4- 0.1- 180207 691 0.5+ 0.1+
Ephemeris:
2018 CU a,e,i = 1.05, 0.35, 25 q = 0.6855
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 01 08 11 55 06.8 -65 42 50 0.2121 0.9603 77.6 90.0 23.4
...
2018 01 23 10 18 59.0 -37 04 43 0.1340 1.0515 116.8 56.7 21.5
...
2018 01 31 09 40 05.6 -07 46 52 0.1252 1.0975 152.2 24.8 20.5
...
2018 02 06 09 16 54.5 +12 52 18 0.1444 1.1303 177.1 2.5 20.0
2018 02 07 09 13 33.4 +15 41 43 0.1495 1.1357 178.1 1.6 20.1
2018 02 08 09 10 21.3 +18 19 22 0.1550 1.1410 175.2 4.1 20.3
...
2018 02 14 08 54 13.4 +30 21 38 0.1955 1.1718 158.7 17.9 21.4
...
2018 02 22 08 40 32.8 +39 16 50 0.2624 1.2104 143.6 29.0 22.5
...
2018 03 09 08 34 16.3 +45 46 08 0.4062 1.2744 126.0 39.1 23.8
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-C31
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