MPEC 2018-E108: 2018 EF4
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M.P.E.C. 2018-E108 Issued 2018 Mar. 14, 20:34 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 EF4
Observations:
K18E04F* C2018 03 13.19775 09 52 31.49 +37 42 45.2 18.9 GUEE108703
K18E04F C2018 03 13.20349 09 52 43.02 +37 42 52.5 18.9 GUEE108703
K18E04F C2018 03 13.20926 09 52 54.67 +37 42 59.0 18.6 GUEE108703
K18E04F C2018 03 13.22038 09 53 16.99 +37 43 08.1 18.2 GUEE108703
K18E04F C2018 03 13.22550 09 53 27.16 +37 43 12.7 19.2 GUEE108703
K18E04F C2018 03 13.23065 09 53 37.50 +37 43 16.3 19.0 GUEE108703
K18E04F C2018 03 13.23583 09 53 47.91 +37 43 23.2 18.7 GUEE108703
K18E04F KC2018 03 13.83153 10 14 21.58 +37 38 40.5 UEE108J95
K18E04F KC2018 03 13.83696 10 14 31.26 +37 38 40.7 19.6 GUEE108J95
K18E04F C2018 03 13.87108 10 15 43.30 +37 40 45.8 18.4 GUEE108J04
K18E04F C2018 03 13.87126 10 15 43.58 +37 40 45.8 18.8 GUEE108J04
K18E04F C2018 03 13.87143 10 15 43.88 +37 40 45.9 18.5 GUEE108J04
K18E04F KC2018 03 13.87410 10 15 33.27 +37 39 44.3 19.5 UEE108K63
K18E04F KC2018 03 13.87818 10 15 40.17 +37 39 42.2 19.6 UEE108K63
K18E04F KC2018 03 13.88237 10 15 47.46 +37 39 40.0 19.9 UEE108K63
K18E04F KC2018 03 13.88399 10 15 54.04 +37 38 30.9 UEE108J95
K18E04F KC2018 03 13.88661 10 15 58.59 +37 38 30.4 UEE108J95
K18E04F KC2018 03 13.88924 10 16 03.12 +37 38 28.7 19.2 GUEE108J95
K18E04F KC2018 03 13.90945310 16 35.79 +37 39 20.5 19.0 VqEE108C95
K18E04F KC2018 03 13.91208 10 16 33.69 +37 38 50.3 18.8 RoEE108K88
K18E04F KC2018 03 13.91574 10 16 39.97 +37 38 46.4 18.8 RoEE108K88
K18E04F KC2018 03 13.91939 10 16 46.15 +37 38 42.6 19.0 RoEE108K88
K18E04F KC2018 03 13.92788810 17 06.90 +37 39 06.8 19.4 VqEE108C95
K18E04F KC2018 03 14.02993 10 19 56.41 +37 36 34.7 UEE108204
K18E04F KC2018 03 14.03550 10 20 05.72 +37 36 24.8 UEE108204
K18E04F KC2018 03 14.04026 10 20 13.70 +37 36 16.0 19.4 GUEE108204
K18E04F C2018 03 14.18777 10 25 04.16 +37 35 17.2 18.9 GUEE108I52
K18E04F C2018 03 14.18795 10 25 04.49 +37 35 15.8 18.2 GUEE108I52
K18E04F C2018 03 14.18813 10 25 04.74 +37 35 16.5 18.2 GUEE108I52
K18E04F C2018 03 14.18831 10 25 05.01 +37 35 15.5 18.6 GUEE108I52
K18E04F C2018 03 14.48472 10 33 21.65 +37 27 16.4 19.4 RrEE108P93
K18E04F C2018 03 14.48680 10 33 24.74 +37 27 15.0 19.3 RrEE108P93
K18E04F C2018 03 14.48888 10 33 27.69 +37 27 13.2 19.3 RrEE108P93
K18E04F C2018 03 14.49303 10 33 33.77 +37 27 09.3 19.6 RrEE108P93
K18E04F KC2018 03 14.79393 10 41 18.22 +37 16 18.1 UEE108587
K18E04F KC2018 03 14.79583 10 41 20.87 +37 16 16.1 UEE108587
K18E04F KC2018 03 14.79773 10 41 23.53 +37 16 14.0 19.1 GUEE108587
K18E04F KC2018 03 14.80008 10 41 22.32 +37 16 34.7 19.3 VtEE108L04
K18E04F KC2018 03 14.80772 10 41 32.73 +37 16 24.7 19.2 VtEE108L04
K18E04F KC2018 03 14.81646 10 41 44.53 +37 16 12.3 19.3 VtEE108L04
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.60-m f/4.64 reflector
+ CCD.
587 Sormano. Observers F. Manca, P. Sicoli, A. Testa. Measurer P. Sicoli.
0.5-m f/6.8 reflector + CCD.
703 Catalina Sky Survey. Observer J. A. Johnson. Measurers B. M. Africano,
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. L. Seaman, F. C. Shelly.
0.68-m Schmidt + 10K CCD.
C95 SATINO Remote Observatory, Haute Provence. Observer J. Jahn. 0.60-m
f/3.2 Newtonian reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer D. C. Fuls. Measurers
B. M. Africano, 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. L. Seaman,
F. C. Shelly. 1.0-m reflector + CCD.
J04 ESA Optical Ground Station, Tenerife. Observer P. Ruiz. Measurers
A. Knoefel, D. Koschny, M. Busch, M. Micheli, E. Schwab. 1.0-m f/4.4
reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.40-m
f/3.2 Newtonian reflector + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 0.60-m Schmidt + CCD.
L04 ROASTERR-1 Observatory, Cluj-Napoca. Observer L. Hudin. 0.3-m f/5
reflector + CCD.
P93 Space Tracking and Communications Center, JAXA. Observers S. Urakawa,
A. Asami. 1.0-m f/3.0 reflector + CCD.
Orbital elements:
2018 EF4 Earth MOID = 0.0022 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 44.69029 (2000.0) P Q
n 0.76884222 Peri. 309.13598 -0.44934533 -0.89311975
a 1.1800794 Node 167.51660 +0.84627608 -0.43295059
e 0.2095465 Incl. 5.47855 +0.28619150 -0.12202829
P 1.28 H 26.1 G 0.15 U 6
Residuals in seconds of arc
180313 703 0.6+ 0.5- 180313 K63 1.0- 0.3+ 180314 I52 0.0 0.2+
180313 703 0.1- 0.4+ 180313 J95 0.3+ 0.1- 180314 I52 0.1- 0.7-
180313 703 0.2+ 0.9+ 180313 J95 0.3+ 0.5+ 180314 P93 0.1- 0.3-
180313 703 0.2+ 0.5- 180313 J95 0.1- 0.2- 180314 P93 0.6+ 0.1+
180313 703 0.7- 0.2- 180313 C95 0.0 0.4- 180314 P93 0.3- 0.1+
180313 703 0.2- 0.6- 180313 K88 0.5- 0.3+ 180314 P93 0.3+ 0.0
180313 703 (0.7+ 2.6+) 180313 K88 0.2+ 0.1+ 180314 587 0.4- 0.2-
180313 J95 0.1+ 0.1- 180313 K88 0.1- 0.1+ 180314 587 0.2- 0.1-
180313 J95 0.1- 0.2+ 180313 C95 0.2+ 0.0 180314 587 0.1+ 0.1-
180313 J04 0.2+ 0.0 180314 204 0.1+ 0.2- 180314 L04 0.2- 0.0
180313 J04 0.1- 0.0 180314 204 0.1- 0.2- 180314 L04 0.3+ 0.3+
180313 J04 0.1- 0.1+ 180314 204 0.0 0.4- 180314 L04 0.2+ 0.0
180313 K63 1.5- 0.5+ 180314 I52 0.2- 0.6+
180313 K63 (2.5- 0.3+) 180314 I52 0.4+ 0.7-
Ephemeris:
2018 EF4 a,e,i = 1.18, 0.21, 5 q = 0.9328
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 02 12 01 40 46.2 -22 49 13 0.08308 0.9447 57.2 118.6 25.3
...
2018 02 27 02 34 27.1 -16 16 58 0.03571 0.9717 57.8 120.4 23.7
...
2018 03 07 04 42 39.5 +07 21 15 0.01472 0.9909 84.2 94.9 20.3
...
2018 03 13 09 44 48.0 +37 38 53 0.01761 1.0070 137.8 41.5 19.0
2018 03 14 10 19 15.9 +37 38 45 0.02002 1.0098 141.0 38.2 19.2
2018 03 15 10 45 55.3 +37 11 33 0.02265 1.0126 143.1 36.1 19.4
...
2018 03 21 12 02 23.2 +33 22 04 0.04067 1.0302 146.6 32.2 20.6
...
2018 03 29 12 33 44.6 +29 56 25 0.06721 1.0552 146.9 31.1 21.7
...
2018 04 13 12 52 19.5 +25 20 51 0.1221 1.1047 144.9 31.4 23.1
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-E108
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