Orbit Fit and Astrometric record for 04PX107

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: 04PX107   
# Created Fri Nov 16 02:08:28 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   19 observations of   19
# Arc:  14.09y
# First observation: 2003/06/01
#  Last observation: 2017/07/04
# Chi-squared of fit:    36.23 DOF:   32 RMS:  0.24
# Min/Max residuals:    -0.70    0.44
# Exact a, adot, b, bdot, g, gdot:
  1.507618E-05  2.455143E-02 -4.742191E-07 -8.272902E-04  2.456601E-02  9.674882E-04
# Covariance matrix:
  6.5496E-13 -2.4815E-13 -1.4670E-14  8.1487E-15  2.2159E-13 -6.0215E-13
 -2.4815E-13  1.2061E-13  7.2028E-15 -4.0991E-15 -6.0303E-14  3.0642E-13
 -1.4670E-14  7.2028E-15  1.3817E-13 -1.7382E-14 -4.2889E-15  1.9012E-14
  8.1487E-15 -4.0991E-15 -1.7382E-14  4.9610E-15  2.0815E-15 -1.0852E-14
  2.2159E-13 -6.0303E-14 -4.2889E-15  2.0815E-15  2.1355E-13 -1.4303E-13
 -6.0215E-13  3.0642E-13  1.9012E-14 -1.0852E-14 -1.4303E-13  8.1236E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.362615  -63.854472    0.726622   -0.029318   -0.711139  2452791.783903
# Heliocentric elements and errors
Epoch:              2452792.5000  =  2003/06/02
Mean Anomaly:           25.38317 +/-     0.028
Argument of Peri:      201.69096 +/-     0.031
Long of Asc Node:       65.48428 +/-     0.003
Inclination:             3.04532 +/-     0.000
Eccentricity:         0.05040603 +/-    0.0001
Semi-Major Axis:     43.37301367 +/-    0.0043
Time of Perihelion: 2445436.0020 +/-       8.2
Perihelion:          41.18675214 +/-    0.0053
Aphelion:            45.55927519 +/-    0.0057
Period (y)              285.6522 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           17.58181331 +/-    0.0003
Ecliptic Y          -37.46514769 +/-    0.0007
Ecliptic Z           -1.67809776 +/-    0.0000
Ecliptic XDOT         0.00249614 +/-    0.0000
Ecliptic YDOT         0.00110728 +/-    0.0000
Ecliptic ZDOT        -0.00009638 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.41946718 +/-    0.0006
Geocenter to KBO     40.70666321 +/-    0.0008
# Hcoef:  7.19

The following table shows the complete astrometric record for 04PX107. 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 (04PX107) followed by the observatory code and reference code for the source of the astrometry.

2003 06  01.28316  19 54 31.32   -23 14 26.4   22.7R 04PX107   807  Cr3910      
2003 06  01.37101  19 54 31.02   -23 14 27.6         04PX107   807  Cr3910      
2004 08  14.03084  19 54 49.13   -23 17 52.5   22.6R 04PX107   807  Cl2777      
2004 08  14.12451  19 54 48.72   -23 17 53.7         04PX107   807  Cl2777      
2004 08  15.10176  19 54 44.22   -23 18 04.0         04PX107   807  Cl2777      
2004 09  11.02370  19 53 04.89   -23 21 37.6   23.5R 04PX107   304  Cl4404      
2004 09  11.05126  19 53 04.80   -23 21 37.8         04PX107   304  Cl4404      
2005 08  08.06321  20 01 22.09   -23 02 45.4   22.2R 04PX107   807  Co3996      
2005 08  08.17944  20 01 21.53   -23 02 46.6         04PX107   807  Co3996      
2005 08  09.06876  20 01 17.23   -23 02 58.3         04PX107   807  Co3997      
2006 04  26.34087  20 13 13.07   -22 26 19.7   22.9R 04PX107   807  Cr3590      
2006 04  27.35767  20 13 13.53   -22 26 22.4         04PX107   807  Cr3590      
2006 04  28.33784  20 13 13.97   -22 26 25.6         04PX107   807  Cr3590      
2007 05  12.84892  20 19 02.70   -22 11 30.1   23.7R 04PX107   250  S~06Ak      
2007 05  12.85587  20 19 02.69   -22 11 30.1         04PX107   250  S~06Ak      
2007 05  12.86281  20 19 02.68   -22 11 30.2         04PX107   250  S~06Ak      
2007 05  12.86975  20 19 02.68   -22 11 30.2         04PX107   250  S~06Ak      
2017 07  04.37440  21 14 22.36   -19 02 28.7   24.0R 04PX107   G37  C~2IX9      
2017 07  04.42899  21 14 22.11   -19 02 29.7         04PX107   G37  C~2IX9      

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     0.16       0.00     0.02
  2   0.0002      0.00    -0.00       0.00    -0.16
  3   1.2040      0.00     0.01       0.00     0.16
  4   1.2042      0.00     0.38       0.00     0.01
  5   1.2069      0.00    -0.61       0.00     0.44
  6   1.2806      0.00     0.09       0.00     0.04
  7   1.2807      0.00    -0.11       0.00    -0.03
  8   2.1869      0.00    -0.02       0.00    -0.00
  9   2.1873      0.00     0.17       0.00     0.32
 10   2.1897      0.00    -0.11       0.00     0.07
 11   2.9023      0.00     0.31       0.00    -0.28
 12   2.9051      0.00    -0.46       0.00    -0.34
 13   2.9077      0.00     0.21       0.00    -0.70
 14   3.9468      0.00     0.07       0.00     0.08
 15   3.9468      0.00     0.01       0.00     0.13
 16   3.9468      0.00    -0.04       0.00     0.08
 17   3.9468      0.00     0.05       0.00     0.13
 18  14.0920      0.00     0.26       0.00    -0.02
 19  14.0921      0.00    -0.28       0.00     0.06

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.

04PX107    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.553    43.553    43.552
ecceobj         0.053     0.053     0.053
incobj          3.050     3.050     3.050
qmin           40.759    40.759    40.759
qmax           46.735    46.736    46.733
amean          43.641    43.641    43.641
amin           43.298    43.299    43.299
amax           43.996    43.994    43.995
emean           0.044     0.044     0.044
emin            0.025     0.025     0.025
emax            0.062     0.062     0.062
imean           1.450     1.450     1.450
imin            0.586     0.586     0.586
imax            2.159     2.159     2.159
excite_mean     0.051     0.051     0.051
fracstop        1.000     1.000     1.000
cjmean          3.094     3.094     3.094

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       192.3     192.2     192.4
kozaiamp        180.0     180.0     180.0