[Iaude] MPEC F09: 2018 EK4 [a=1.71,e=0.40,i=8.1,H=24.5]

mpec at mpcdb1.cfa.harvard.edu mpec at mpcdb1.cfa.harvard.edu
Fri Mar 16 14:05:17 EDT 2018


M.P.E.C. 2018-F09                                Issued 2018 Mar. 16, 18:01 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 at CFA.HARVARD.EDU
            URL https://www.minorplanetcenter.net/    ISSN 1523-6714


                                   2018 EK4
 
Observations:
     K18E04K* C2018 03 14.18778 08 49 02.23 +20 24 11.3          20.2 GUEF009G96
     K18E04K  C2018 03 14.19576 08 49 05.64 +20 23 00.6          20.7 GUEF009G96
     K18E04K  C2018 03 14.20091 08 49 07.89 +20 22 14.5          20.6 GUEF009G96
     K18E04K  C2018 03 14.20608 08 49 10.08 +20 21 29.1          20.6 GUEF009G96
     K18E04K  C2018 03 14.24083 08 49 25.03 +20 16 18.1          20.9 GUEF009I52
     K18E04K  C2018 03 14.24208 08 49 25.56 +20 16 07.5          20.4 GUEF009I52
     K18E04K  C2018 03 14.24332 08 49 26.14 +20 15 55.7          20.0 GUEF009I52
     K18E04K  C2018 03 14.24456 08 49 26.63 +20 15 45.1          20.5 GUEF009I52
     K18E04K KC2018 03 14.87898 08 54 21.14 +18 41 37.0                UEF009587
     K18E04K KC2018 03 14.88752 08 54 24.75 +18 40 21.5          20.8 GUEF009587
     K18E04K KC2018 03 14.89379 08 54 27.42 +18 39 25.6                UEF009587
     K18E04K KC2018 03 15.20324908 56 46.15 +17 54 07.2          21.2 VuEF009H21
     K18E04K KC2018 03 15.20708408 56 47.75 +17 53 33.4          20.8 VuEF009H21
     K18E04K KC2018 03 15.21446908 56 50.85 +17 52 28.2          20.7 VuEF009H21
     K18E04K KC2018 03 16.09397009 03 23.67 +15 44 38.0          21.3 VuEF009H21
     K18E04K KC2018 03 16.10146309 03 26.68 +15 43 33.2          21.1 VuEF009H21
     K18E04K KC2018 03 16.10700309 03 28.91 +15 42 45.7          20.9 VuEF009H21
     K18E04K  C2018 03 16.17870 09 03 59.73 +15 32 38.3          20.9 GUEF009G96
     K18E04K  C2018 03 16.18386 09 04 01.77 +15 31 54.0          20.7 GUEF009G96
     K18E04K  C2018 03 16.18901 09 04 03.84 +15 31 10.2          20.6 GUEF009G96
     K18E04K  C2018 03 16.19418 09 04 05.86 +15 30 24.2          20.1 GUEF009G96
     K18E04K  C2018 03 16.27544 09 04 37.99 +15 18 41.8          20.4 GUEF009I52
     K18E04K  C2018 03 16.27793 09 04 38.98 +15 18 20.4          20.5 GUEF009I52
     K18E04K  C2018 03 16.27917 09 04 39.45 +15 18 10.2          20.8 GUEF009I52
 
Observer details:
587 Sormano.  Observers F. Manca, P. Sicoli, A. Testa.  Measurer P. Sicoli.
    0.5-m f/6.8 reflector + CCD.
G96 Mt. Lemmon Survey.  Observers R. A. Kowalski, A. D. Grauer.  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.  1.5-m reflector + 10K 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, 0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers D. C. Fuls,
    B. M. Africano, G. J. Leonard.  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.
 
Orbital elements:
2018 EK4                                                 Earth MOID = 0.0549 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M  13.68654              (2000.0)            P               Q
n   0.44057362     Peri.  154.15050     -0.82659731     -0.56241550
a   1.7105025      Node   351.53582     +0.48898873     -0.69956507
e   0.3983953      Incl.    8.05786     +0.27861605     -0.44079193
P   2.24           H   24.5           G   0.15           U   7
Residuals in seconds of arc
180314 G96  0.2-  0.2-    180314 587  0.5+  0.1-    180316 H21  0.2+  0.0
180314 G96  0.4-  0.1+    180314 587  0.3+  0.0     180316 G96  0.2-  0.0
180314 G96  0.1+  0.2-    180314 587  0.5+  0.4-    180316 G96  0.2-  0.2+
180314 G96  0.3-  0.4+    180315 H21  0.3-  0.1-    180316 G96  0.3+  0.7+
180314 I52  0.1+  0.3-    180315 H21  0.3-  0.1+    180316 G96  0.0   0.7-
180314 I52  0.0   0.3+    180315 H21  0.2-  0.3+    180316 I52  0.2+  0.4-
180314 I52  0.7+  0.4-    180316 H21  0.1-  0.1+    180316 I52  0.2+  0.2-
180314 I52  0.1+  0.1+    180316 H21  0.1+  0.2-    180316 I52  0.1-  0.3+

Ephemeris:
2018 EK4                 a,e,i = 1.71, 0.40, 8                   q = 1.0290
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 02 14    04 22 07.4 +57 56 56   0.1325  1.0309   105.5    67.4    22.5
...
2018 03 01    06 42 08.0 +48 02 44   0.09352 1.0336   114.9    60.4    21.6
...
2018 03 09    08 04 17.6 +33 02 51   0.08307 1.0450   127.1    49.2    21.0
...
2018 03 15    08 55 16.2 +18 24 44   0.08473 1.0579   137.0    39.9    20.8
2018 03 16    09 02 40.9 +15 59 00   0.08590 1.0604   138.3    38.6    20.8
2018 03 17    09 09 47.6 +13 36 20   0.08733 1.0630   139.6    37.3    20.8
...
2018 03 23    09 46 43.8 +01 01 51   0.1007  1.0804   144.7    32.2    21.0
...
2018 03 31    10 23 48.4 -10 25 48   0.1285  1.1082   146.4    29.9    21.6
...
2018 04 15    11 11 10.5 -20 33 58   0.2005  1.1721   144.5    29.8    22.7

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-F09



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