[Iaude] MPEC F08: 2018 EM4 [a=1.28,e=0.27,i=2.9,H=25.5]

Fri Mar 16 14:01:17 EDT 2018

M.P.E.C. 2018-F08                                Issued 2018 Mar. 16, 17:58 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 EM4
 
Observations:
     K18E04M  C2018 03 06.30896 10 45 14.023+21 17 21.96         21.9 wUEF008F51
     K18E04M  C2018 03 06.32077 10 45 12.339+21 17 30.45         21.7 wUEF008F51
     K18E04M  C2018 03 06.33254 10 45 10.652+21 17 38.56         21.7 wUEF008F51
     K18E04M  C2018 03 06.34437 10 45 08.904+21 17 46.52         21.4 wUEF008F51
     K18E04M* C2018 03 14.25151 10 24 11.88 +22 35 35.2          20.1 GUEF008G96
     K18E04M  C2018 03 14.25665 10 24 10.42 +22 35 39.8          20.1 GUEF008G96
     K18E04M  C2018 03 14.26696 10 24 07.59 +22 35 45.7          20.7 GUEF008G96
     K18E04M KC2018 03 14.87099 10 21 56.41 +22 41 40.5          20.1 GUEF008J04
     K18E04M KC2018 03 14.87621 10 21 55.01 +22 41 44.5          20.2 GUEF008J04
     K18E04M KC2018 03 15.24459910 20 18.40 +22 45 07.8          20.9 VuEF008H21
     K18E04M KC2018 03 15.24774310 20 17.49 +22 45 09.2          21.0 VuEF008H21
     K18E04M KC2018 03 15.25302210 20 15.92 +22 45 12.0          21.3 VuEF008H21
     K18E04M KC2018 03 16.18437110 16 20.56 +22 54 21.8          20.7 VuEF008H21
     K18E04M KC2018 03 16.18797610 16 19.42 +22 54 24.1          20.2 VuEF008H21
     K18E04M KC2018 03 16.19182110 16 18.19 +22 54 26.4          20.4 VuEF008H21
     K18E04M  C2018 03 16.29470 10 15 48.16 +22 55 42.8          20.3 GUEF008I52
     K18E04M  C2018 03 16.29546 10 15 47.88 +22 55 42.9          20.1 GUEF008I52
     K18E04M  C2018 03 16.29622 10 15 47.58 +22 55 43.2          20.7 GUEF008I52
     K18E04M  C2018 03 16.29698 10 15 47.34 +22 55 43.4          20.3 GUEF008I52
 
Observer details:
F51 Pan-STARRS 1, Haleakala.  Observers J. Bulger, T. Lowe, A. Schultz,
    M. Willman.  Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
    M. Huber, E. Magnier, Y. Ramanjooloo, R. Wainscoat, C. Waters, R. Weryk.
    1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey.  Observer R. A. Kowalski.  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.  0.76-m f/3.0
    astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observers 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.
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.
 
Orbital elements:
2018 EM4                                                 Earth MOID = 0.0015 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5                 MPC
M 328.06484              (2000.0)            P               Q
n   0.68329698     Peri.  228.15148     -0.57788914     +0.81609477
a   1.2766241      Node     6.55398     -0.73295304     -0.51587200
e   0.2695004      Incl.    2.90493     -0.35892058     -0.26050989
P   1.44           H   25.5           G   0.15           U   6
Residuals in seconds of arc
180306 F51  0.2+  0.0     180314 J04  0.6-  0.1+    180316 H21  0.5-  0.3+
180306 F51  0.0   0.1+    180314 J04  0.2-  0.1-    180316 I52  0.5+  0.6+
180306 F51  0.0   0.1+    180315 H21  0.5-  0.2+    180316 I52  0.0   0.3+
180306 F51  0.4-  0.1-    180315 H21  0.4-  0.0     180316 I52  0.7-  0.2+
180314 G96  0.8+  1.3-    180315 H21  0.9-  0.2+    180316 I52  0.5-  0.0
180314 G96  0.0   0.1+    180316 H21  0.8-  0.1+
180314 G96  0.4-  0.2-    180316 H21  0.6-  0.3+

Ephemeris:
2018 EM4                 a,e,i = 1.28, 0.27, 3                   q = 0.9326
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2018 02 14    11 03 15.7 +18 23 47   0.1904  1.1695   161.4    15.6    23.1
...
2018 03 01    10 53 19.2 +20 27 10   0.1185  1.1066   167.2    11.4    21.8
...
2018 03 09    10 39 33.3 +21 43 48   0.08598 1.0743   160.8    17.7    21.3
...
2018 03 15    10 21 19.9 +22 43 24   0.06366 1.0512   152.4    26.0    20.8
2018 03 16    10 17 09.6 +22 53 15   0.06009 1.0475   150.6    27.7    20.7
2018 03 17    10 12 31.4 +23 02 58   0.05656 1.0437   148.8    29.6    20.6
...
2018 03 23    09 28 19.3 +23 49 12   0.03640 1.0223   134.2    44.4    20.1
...
2018 03 31    06 01 34.1 +15 46 16   0.01656 0.9962    80.5    98.6    20.1
...
2018 04 15    00 31 36.7 -16 02 16   0.05255 0.9578    29.6   148.8    27.2

A. U. Tomatic                (C) Copyright 2018 MPC           M.P.E.C. 2018-F08