MPEC 2018-R131: 2018 RQ4
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M.P.E.C. 2018-R131 Issued 2018 Sept. 12, 15:16 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 RQ4
Observations:
K18R04Q* C2018 09 11.28110 00 14 41.18 +10 52 00.1 21.4 G ER131G96
K18R04Q C2018 09 11.28635 00 14 45.50 +10 52 44.6 21.3 G ER131G96
K18R04Q C2018 09 11.29158 00 14 49.85 +10 53 27.5 20.8 G ER131G96
K18R04Q C2018 09 11.29680 00 14 54.19 +10 54 10.9 20.9 G ER131G96
K18R04Q C2018 09 11.40387 00 16 23.75 +11 09 05.1 21.2 G ER131V06
K18R04Q C2018 09 11.40618 00 16 25.69 +11 09 24.4 21.0 G ER131V06
K18R04Q C2018 09 11.40848 00 16 27.65 +11 09 43.6 21.2 G ER131V06
K18R04Q C2018 09 11.41078 00 16 29.60 +11 10 02.7 21.2 G ER131V06
K18R04Q C2018 09 11.89347 00 24 21.52 +12 18 45.2 21.1 VSER131033
K18R04Q C2018 09 11.89603 00 24 23.95 +12 19 08.7 20.4 VSER131033
K18R04Q C2018 09 11.89858 00 24 26.38 +12 19 31.6 20.1 VSER131033
K18R04Q C2018 09 11.90113 00 24 28.81 +12 19 54.7 20.1 VSER131033
K18R04Q KC2018 09 11.93568400 25 01.75 +12 25 24.8 21.1 GVER131L01
K18R04Q KC2018 09 11.93785600 25 03.82 +12 25 44.6 21.3 GVER131L01
K18R04Q KC2018 09 12.26731000 30 40.31 +13 16 22.2 21.5 VuER131H21
K18R04Q KC2018 09 12.27484300 30 47.74 +13 17 32.8 21.4 VuER131H21
K18R04Q C2018 09 12.28422 00 31 02.04 +13 19 21.3 20.7 G ER131I52
K18R04Q C2018 09 12.28662 00 31 04.41 +13 19 44.4 20.3 G ER131I52
K18R04Q KC2018 09 12.28811500 31 00.85 +13 19 36.6 21.4 VuER131H21
K18R04Q C2018 09 12.29326 00 31 10.99 +13 20 47.3 20.5 G ER131I52
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers C. Hoegner,
B. Stecklum. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
G96 Mt. Lemmon Survey. Observer 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. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.81-m f/4.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer E. J. Christensen.
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. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
V06 Catalina Sky Survey-Kuiper. 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. 1.55-m reflector + CCD.
Orbital elements:
2018 RQ4 Earth MOID = 0.0027 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 258.66583 (2000.0) P Q
n 0.48219562 Peri. 129.00521 +0.83643215 -0.54803675
a 1.6105982 Node 264.22802 +0.50093666 +0.76895387
e 0.4027886 Incl. 0.35020 +0.22235944 +0.32918942
P 2.04 H 26.9 G 0.15 U 7
Residuals in seconds of arc
180911 G96 0.2+ 0.2+ 180911 V06 0.3+ 0.1- 180912 H21 0.6- 0.0
180911 G96 0.4- 0.8+ 180911 033 0.2+ 0.2- 180912 H21 0.6- 0.1+
180911 G96 0.4- 0.1- 180911 033 0.1+ 0.2+ 180912 I52 0.5+ 0.1-
180911 G96 0.3- 0.3- 180911 033 0.2+ 0.0 180912 I52 0.5+ 0.3+
180911 V06 0.4+ 0.2- 180911 033 0.2+ 0.0 180912 H21 0.5- 0.4-
180911 V06 0.1+ 0.1- 180911 L01 0.6- 0.2- 180912 I52 0.7+ 0.3+
180911 V06 0.3+ 0.1- 180911 L01 0.2- 0.1-
Ephemeris:
2018 RQ4 a,e,i = 1.61, 0.40, 0 q = 0.9619
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 08 13 22 18 26.1 -08 29 34 0.1853 1.1942 166.5 11.5 24.3
...
2018 08 28 22 42 12.1 -04 23 57 0.1038 1.1134 173.1 6.3 22.7
...
2018 09 05 23 14 06.0 +01 02 34 0.06700 1.0745 170.5 8.9 21.8
...
2018 09 11 00 10 29.0 +10 15 04 0.04381 1.0481 159.7 19.4 21.2
2018 09 12 00 26 01.3 +12 36 56 0.04063 1.0439 156.3 22.8 21.1
2018 09 13 00 44 22.1 +15 16 28 0.03776 1.0399 152.1 26.9 21.1
...
2018 09 19 03 49 03.7 +31 55 57 0.03080 1.0172 113.2 65.2 21.7
...
2018 09 27 07 16 29.0 +29 04 25 0.05032 0.9923 76.9 100.2 24.0
...
2018 10 12 08 50 03.7 +20 28 57 0.1090 0.9646 69.1 104.9 25.9
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-R131
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