MPEC 2018-R123: 2018 RC4
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M.P.E.C. 2018-R123 Issued 2018 Sept. 11, 17:01 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 RC4
Observations:
K18R04C* C2018 09 10.20279 22 39 52.77 -19 59 20.5 19.6 GVER123703
K18R04C C2018 09 10.20808 22 39 58.76 -19 58 12.9 19.5 GVER123703
K18R04C C2018 09 10.21337 22 40 04.77 -19 57 06.5 19.3 GVER123703
K18R04C C2018 09 10.21865 22 40 10.79 -19 55 57.6 19.6 GVER123703
K18R04C C2018 09 10.35543 22 42 46.80 -19 25 58.5 19.3 GVER123I52
K18R04C C2018 09 10.35567 22 42 47.10 -19 25 55.6 19.0 GVER123I52
K18R04C C2018 09 10.35591 22 42 47.38 -19 25 51.8 18.9 GVER123I52
K18R04C C2018 09 10.35616 22 42 47.67 -19 25 48.5 18.8 GVER123I52
K18R04C KC2018 09 10.88630122 54 20.85 -17 21 40.4 19.4 GVER123L01
K18R04C KC2018 09 10.88784422 54 22.80 -17 21 17.9 19.4 GVER123L01
K18R04C pC2018 09 10.88938822 54 24.76 -17 20 54.5 19.5 GVER123L01
K18R04C KC2018 09 10.89675 22 54 34.70 -17 19 02.0 18.6 VER123104
K18R04C KC2018 09 10.90116 22 54 40.21 -17 17 56.7 18.8 VER123104
K18R04C KC2018 09 10.90409 22 54 43.90 -17 17 12.8 18.9 VER123104
K18R04C KC2018 09 10.92635 22 55 11.05 -17 11 45.8 19.0 GVER123595
K18R04C KC2018 09 10.92868 22 55 15.03 -17 11 10.3 VER123204
K18R04C KC2018 09 10.92990 22 55 15.51 -17 10 53.4 19.4 GVER123595
K18R04C KC2018 09 10.93669 22 55 25.10 -17 09 10.3 19.0 GVER123204
K18R04C KC2018 09 10.94425 22 55 34.60 -17 07 16.7 VER123204
K18R04C C2018 09 11.18302 23 01 07.63 -16 04 56.5 18.6 G ER123I52
K18R04C C2018 09 11.18425 23 01 09.28 -16 04 37.3 19.2 G ER123I52
K18R04C C2018 09 11.18444 23 01 09.55 -16 04 35.2 18.9 G ER123I52
K18R04C C2018 09 11.18462 23 01 09.71 -16 04 31.9 18.8 G ER123I52
K18R04C C2018 09 11.48294 23 07 50.28 -14 42 52.5 18.6 oUER123T08
K18R04C C2018 09 11.49357 23 08 04.26 -14 39 52.3 18.7 oUER123T08
K18R04C C2018 09 11.50374 23 08 17.72 -14 36 59.5 18.4 oUER123T08
K18R04C C2018 09 11.51441 23 08 31.87 -14 33 57.7 18.6 oUER123T08
K18R04C KC2018 09 11.53526623 09 10.19 -14 23 18.0 18.0 RVER123474
K18R04C KC2018 09 11.53565123 09 10.69 -14 23 11.2 18.5 RVER123474
K18R04C KC2018 09 11.53642123 09 11.72 -14 22 58.0 18.4 RVER123474
K18R04C KC2018 09 11.53773123 09 13.49 -14 22 35.9 18.2 RVER123474
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 0.84-m f/3.5 reflector
+ CCD.
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.
595 Farra d'Isonzo. Observers E. Pettarin, F. Piani. Measurer E. Pettarin.
0.61-m f/4.0 reflector + CCD.
703 Catalina Sky Survey. Observer D. C. Fuls. 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. 0.68-m Schmidt + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
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.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, I. Lyon. Measurer
K. Korlevic. 1.0-m f/2.9 reflector + CCD.
T08 ATLAS-MLO, Mauna Loa. Observers L. Denneau, H. Flewelling, A. Heinze,
H. Weiland, J. Tonry. Measurers L. Denneau, H. Flewelling, A. Heinze,
J. Tonry, A. Fitzsimmons, D. Young. 0.5-m f/2.0 Schmidt + CCD.
Orbital elements:
2018 RC4 Earth MOID = 0.0222 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 314.95601 (2000.0) P Q
n 0.24317228 Peri. 11.45839 +0.99813437 -0.06032203
a 2.5421042 Node 351.98194 +0.04929838 +0.88741803
e 0.5972011 Incl. 3.87870 +0.03602004 +0.45700164
P 4.05 H 25.9 G 0.15 U 6
Residuals in seconds of arc
180910 703 0.2+ 0.3- 180910 104 0.1+ 0.2+ 180911 I52 0.7- 0.2-
180910 703 0.2- 0.1+ 180910 104 0.1- 0.1+ 180911 T08 0.7+ 0.0
180910 703 0.2- 0.9- 180910 104 0.3+ 0.5+ 180911 T08 0.0 0.0
180910 703 0.1+ 0.6+ 180910 595 0.1+ 0.2+ 180911 T08 0.0 0.2-
180910 I52 0.2- 0.1+ 180910 204 0.2- 0.0 180911 T08 0.5- 0.5-
180910 I52 0.1+ 0.3- 180910 595 0.2+ 0.7- 180911 474 0.3+ 0.0
180910 I52 0.1+ 0.3+ 180910 204 0.0 0.1- 180911 474 0.0 0.2+
180910 I52 0.1+ 0.2+ 180910 204 0.1+ 0.1- 180911 474 0.0 0.3+
180910 L01 0.3- 0.2+ 180911 I52 0.7- 0.1+ 180911 474 0.1+ 0.2+
180910 L01 0.1- 0.1- 180911 I52 0.0 0.2+
180910 L01 0.3+ 0.5+ 180911 I52 0.4+ 0.7-
Ephemeris:
2018 RC4 a,e,i = 2.54, 0.60, 4 q = 1.0240
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 08 12 20 09 07.0 -36 31 43 0.1684 1.1655 152.6 23.6 23.5
...
2018 08 27 20 30 58.1 -35 51 52 0.09382 1.0879 144.2 32.9 22.3
...
2018 09 04 21 14 37.5 -32 02 11 0.05789 1.0575 146.7 31.5 21.2
...
2018 09 10 22 35 40.3 -20 39 02 0.03521 1.0407 162.1 17.3 19.6
2018 09 11 22 56 47.1 -16 49 23 0.03236 1.0384 167.1 12.5 19.3
2018 09 12 23 20 32.7 -12 09 06 0.02999 1.0363 172.2 7.6 18.9
...
2018 09 18 02 12 14.5 +23 00 09 0.03068 1.0270 135.4 43.4 20.1
...
2018 09 26 04 30 53.3 +38 18 55 0.05830 1.0239 109.8 67.1 22.1
...
2018 10 11 05 39 21.8 +41 08 01 0.1209 1.0467 110.4 63.4 23.7
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-R123
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