Orbit Fit and Astrometric record for 04EP95

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 04EP95    
# Created Wed Dec 13 02:37:20 2017
# Orbit generated from Bernstein formalism
# Fitting    9 observations of    9
# Arc:   0.99y
# First observation: 2004/03/14
#  Last observation: 2005/03/10
Preliminary a, adot, b, bdot, g, gdot:
  -0.000004   0.022233  -0.000002   0.003379   0.023538   0.000000
# Chi-squared of fit:    13.44 DOF:   12 RMS:  0.22
# Min/Max residuals:    -0.40    0.62
# Exact a, adot, b, bdot, g, gdot:
  1.688546E-05  2.223710E-02 -7.260221E-07  3.381009E-03  2.352151E-02 -4.680561E-04
# Covariance matrix:
  5.0601E-13  4.2643E-12 -5.0975E-14  7.1992E-13  1.9116E-12  2.0805E-10
  4.2643E-12  6.6338E-10 -6.7560E-12  9.9241E-11  1.9960E-10  2.8846E-08
 -5.0975E-14 -6.7560E-12  3.1915E-13 -1.3248E-12 -2.0464E-12 -2.9444E-10
  7.1992E-13  9.9241E-11 -1.3248E-12  1.5992E-11  2.9992E-11  4.3239E-09
  1.9116E-12  1.9960E-10 -2.0464E-12  2.9992E-11  6.1425E-11  8.7148E-09
  2.0805E-10  2.8846E-08 -2.9444E-10  4.3239E-09  8.7148E-09  1.2568E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
    5.478898 -155.993728    0.491199    0.082158   -0.856148  2453078.967723
# Heliocentric elements and errors
Epoch:              2453070.5000  =  2004/03/06
Mean Anomaly:          287.76401 +/-    21.551
Argument of Peri:      107.56827 +/-    27.173
Long of Asc Node:      171.84871 +/-     0.008
Inclination:            10.19765 +/-     0.002
Eccentricity:         0.03127211 +/-    0.0479
Semi-Major Axis:     43.75452393 +/-    0.0385
Time of Perihelion: 2474282.6158 +/-    6328.4
Perihelion:          42.38622761 +/-    2.0975
Aphelion:            45.12282025 +/-    2.0976
Period (y)              289.4294 +/-      0.38
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -39.64834075 +/-    0.0129
Ecliptic Y          -17.11684554 +/-    0.0057
Ecliptic Z            4.05922876 +/-    0.0014
Ecliptic XDOT         0.00113340 +/-    0.0001
Ecliptic YDOT        -0.00233388 +/-    0.0001
Ecliptic ZDOT         0.00038668 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.37573819 +/-    0.0120
Geocenter to KBO     42.51427335 +/-    0.0142
# Hcoef:  6.95

The following table shows the complete astrometric record for 04EP95. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (04EP95) followed by the observatory code and reference code for the source of the astrometry.

2004 03  14.46698  13 36 58.96   -04 12 52.2   22.7R 04EP95    695  Ck5138      
2004 03  15.39377  13 36 55.66   -04 12 27.9         04EP95    695  Ck5138      
2004 03  15.47507  13 36 55.37   -04 12 25.5         04EP95    695  Ck5138      
2004 04  22.37989  13 34 17.88   -03 54 43.1         04EP95    568  Ck9590      
2004 04  22.44429  13 34 17.59   -03 54 41.3         04EP95    568  Ck9590      
2004 05  14.32925  13 32 48.55   -03 46 11.9   23.2R 04EP95    568  Ck9590      
2004 05  14.40415  13 32 48.26   -03 46 10.6         04EP95    568  Ck9590      
2005 03  09.49454  13 42 19.98   -04 32 14.4   23.1R 04EP95    695  C~077a      
2005 03  10.42724  13 42 16.96   -04 31 49.9         04EP95    695  C~077a      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00    -0.40       0.00     0.62
  2   0.0025    -54.83     0.20       4.64    -0.28
  3   0.0028    -59.74     0.27       5.30    -0.07
  4   0.1065  -2641.47    -0.03     134.99    -0.16
  5   0.1067  -2646.17    -0.16     135.08    -0.09
  6   0.1666  -4073.14     0.07     122.43     0.07
  7   0.1668  -4077.66     0.04     122.06    -0.12
  8   0.9857   4896.19     0.02     662.87    -0.06
  9   0.9883   4845.19    -0.02     669.32     0.10

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

04EP95    quality flag:2

Type:      CLASSICAL  SCATEXTD CLASSICAL

axisobj        43.294    44.394    43.261
ecceobj         0.032     0.180     0.024
incobj         10.243    10.243    10.245
qmin           41.618    35.993    41.909
qmax           45.773    53.820    45.368
amean          43.600    44.743    43.567
amin           43.271    44.346    43.232
amax           43.944    45.191    43.904
emean           0.029     0.176     0.022
emin            0.016     0.159     0.009
emax            0.042     0.192     0.034
imean          10.079    10.379    10.079
imin            9.574     9.455     9.574
imax           10.659    11.266    10.660
excite_mean     0.177     0.252     0.176
fracstop        1.000     1.000     1.000
cjmean          3.059     3.034     3.059

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       184.5     179.3     184.9
kozaiamp        180.0     179.9     180.0