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IAU Minor Planet Center

Minor Planet Center

MPEC 2003-E31 : 2003 EP4

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M.P.E.C. 2003-E31                                Issued 2003 Mar. 8, 17:56 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 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 http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2003 EP4

Observations:
     K03E04P* C2003 03 07.30359 11 00 13.84 -00 21 03.0          18.9        704
     K03E04P  C2003 03 07.31748 11 00 04.00 -00 21 01.9          18.2        704
     K03E04P  C2003 03 07.33971 10 59 48.17 -00 20 58.4          18.3        704
     K03E04P  C2003 03 07.35274 10 59 38.83 -00 20 56.4          18.5        704
     K03E04P  C2003 03 07.36713 10 59 28.50 -00 20 53.5          19.0        704
     K03E04P  C2003 03 08.27362 10 47 18.06 -00 17 34.8          17.6 R      926
     K03E04P  C2003 03 08.27450 10 47 17.02 -00 17 34.1          17.4 R      926
     K03E04P  C2003 03 08.27541 10 47 16.12 -00 17 34.1          17.7 R      926
     K03E04P  C2003 03 08.61260 10 41 15.02 -00 12 50.1          18.2 V      428
     K03E04P  C2003 03 08.61500 10 41 12.22 -00 12 48.8          18.1 V      428
     K03E04P  C2003 03 08.61738 10 41 09.30 -00 12 48.2          17.8 V      428
     K03E04P  C2003 03 08.61978 10 41 06.39 -00 12 47.3          18.0 V      428
     K03E04P  C2003 03 08.69600 10 39 33.20 -00 12 19.5          18.0 V      428
     K03E04P  C2003 03 08.70223 10 39 25.37 -00 12 16.6          17.9 V      428

Observer details:
428 Reedy Creek.  Observer J. Broughton.  0.25-m f/7.2 Schmidt-Cassegrain
    + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, R. Huber, L. Manguso, S. Adams, D. Torres, T. Brothers,
    S. Partridge.  Measurers J. Stuart, R. Sayer, J. Evans, P. Hopman.  1.0-m
    f/2.15 reflector + CCD.
926 Tenagra II Observatory.  Observers P. R. Holvorcem, M. Schwartz.  0.81-m
    f/7 Ritchey-Chretien + CCD.

Orbital elements:
2003 EP4
Epoch 2003 June 10.0 TT = JDT 2452800.5                 MPC
M  24.07862              (2000.0)            P               Q
n   0.63288734     Peri.   66.17735     +0.15165355     +0.98842239
a   1.3435436      Node   212.54652     -0.91003937     +0.13775641
e   0.6376766      Incl.    0.50374     -0.38578432     +0.06359514
P   1.56           H   23.9           G   0.15           U   9
Residuals in seconds of arc
030307 704  0.5-  1.1+    030308 926  1.1+  0.4-    030308 428  0.4-  0.3+
030307 704  0.3-  0.1-    030308 926  0.7-  0.0     030308 428  0.5-  0.3+
030307 704  0.2+  0.3-    030308 926  0.1-  0.2-    030308 428  1.6+  0.5-
030307 704  0.2+  0.5-    030308 428  1.3-  0.1+    030308 428  0.3-  0.0
030307 704  0.4+  0.0     030308 428  0.2+  0.5+

Ephemeris:
2003 EP4                 a,e,i = 1.34, 0.64, 1                   q = 0.4868
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2003 03 02    11 29.15   -00 24.6    0.125    1.113   167.4    11.2    20.3
2003 03 03    11 26.21   -00 24.7    0.113    1.102   168.9    10.0    20.0
2003 03 04    11 22.53   -00 24.5    0.101    1.091   170.5     8.6    19.7
2003 03 05    11 17.86   -00 23.9    0.089    1.080   172.1     7.3    19.3
2003 03 06    11 11.73   -00 22.6    0.077    1.069   173.5     6.1    19.0
2003 03 07    11 03.39   -00 20.6    0.065    1.057   174.0     5.6    18.6
2003 03 08    10 51.48   -00 17.3    0.054    1.046   172.5     7.1    18.2

2003 03 09.0  10 33.22   -00 11.8    0.043    1.035   168.3    11.2    17.8
2003 03 09.2  10 28.36   -00 10.3    0.040    1.032   167.0    12.5    17.7
2003 03 09.4  10 22.94   -00 08.6    0.038    1.030   165.6    13.8    17.7
2003 03 09.6  10 16.88   -00 06.7    0.036    1.028   164.1    15.4    17.6
2003 03 09.8  10 10.05   -00 04.6    0.034    1.025   162.3    17.1    17.5
2003 03 10.0  10 02.32   -00 02.1    0.032    1.023   160.2    19.2    17.4
2003 03 10.2  09 53.51   +00 00.7    0.030    1.021   157.9    21.4    17.4
2003 03 10.4  09 43.41   +00 03.9    0.028    1.018   155.3    24.0    17.3
2003 03 10.6  09 31.79   +00 07.6    0.026    1.016   152.3    27.0    17.2
2003 03 10.8  09 18.31   +00 11.9    0.024    1.014   148.8    30.5    17.1

2003 03 11.0  09 02.64   +00 16.8    0.022    1.011   144.7    34.6    17.1
2003 03 11.1  08 53.86   +00 19.5    0.021    1.010   142.5    36.8    17.1
2003 03 11.2  08 44.37   +00 22.4    0.021    1.009   140.0    39.2    17.0
2003 03 11.3  08 34.14   +00 25.5    0.020    1.008   137.4    41.9    17.0
2003 03 11.4  08 23.10   +00 28.8    0.019    1.007   134.5    44.7    17.0
2003 03 11.5  08 11.22   +00 32.3    0.018    1.006   131.5    47.7    17.0
2003 03 11.6  07 58.48   +00 35.9    0.018    1.004   128.2    51.0    17.0
2003 03 11.7  07 44.85   +00 39.7    0.017    1.003   124.8    54.4    17.1
2003 03 11.8  07 30.36   +00 43.5    0.017    1.002   121.1    58.1    17.1
2003 03 11.9  07 15.04   +00 47.4    0.016    1.001   117.2    62.0    17.2
2003 03 12.0  06 58.97   +00 51.2    0.016    1.000   113.1    66.1    17.2
2003 03 12.1  06 42.26   +00 54.9    0.016    0.999   108.8    70.4    17.3
2003 03 12.2  06 25.05   +00 58.4    0.015    0.998   104.4    74.7    17.5
2003 03 12.3  06 07.53   +01 01.7    0.015    0.996   100.0    79.2    17.6
2003 03 12.4  05 49.89   +01 04.6    0.015    0.995    95.5    83.7    17.8
2003 03 12.5  05 32.34   +01 07.1    0.015    0.994    91.0    88.1    17.9
2003 03 12.6  05 15.09   +01 09.2    0.016    0.993    86.6    92.5    18.1
2003 03 12.7  04 58.30   +01 10.8    0.016    0.992    82.3    96.8    18.4
2003 03 12.8  04 42.14   +01 12.0    0.016    0.991    78.2   100.9    18.6
2003 03 12.9  04 26.73   +01 12.9    0.017    0.989    74.3   104.8    18.9
2003 03 13.0  04 12.13   +01 13.4    0.017    0.988    70.5   108.5    19.1
2003 03 13.1  03 58.39   +01 13.6    0.018    0.987    67.0   112.0    19.4
2003 03 13.2  03 45.54   +01 13.5    0.018    0.986    63.7   115.3    19.7
2003 03 13.3  03 33.55   +01 13.2    0.019    0.985    60.6   118.4    20.0
2003 03 13.4  03 22.41   +01 12.8    0.020    0.983    57.8   121.3    20.3
2003 03 13.5  03 12.07   +01 12.2    0.020    0.982    55.1   123.9    20.6
2003 03 13.6  03 02.50   +01 11.6    0.021    0.981    52.6   126.4    20.9
2003 03 13.7  02 53.63   +01 10.9    0.022    0.980    50.3   128.7    21.2
2003 03 13.8  02 45.41   +01 10.1    0.023    0.979    48.2   130.8    21.5
2003 03 13.9  02 37.80   +01 09.3    0.024    0.978    46.2   132.8    21.7
2003 03 14.0  02 30.74   +01 08.5    0.025    0.976    44.3   134.7    22.0

     On MPEC 2003-E28 the instrument used for the discovery observations
of 2003 EM1 at Crni Vrh (observatory code 106) should read 0.60-m f/3.3
Deltagraph.

Brian G. Marsden             (C) Copyright 2003 MPC           M.P.E.C. 2003-E31

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