Orbit Fit and Astrometric record for 04PS107

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: 04PS107   
# Created Thu Oct 18 01:08:28 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   12 observations of   12
# Arc:   9.96y
# First observation: 2004/08/12
#  Last observation: 2014/07/29
# Chi-squared of fit:    12.72 DOF:   18 RMS:  0.18
# Min/Max residuals:    -0.29    0.37
# Exact a, adot, b, bdot, g, gdot:
  1.696479E-05  2.845513E-02 -8.059125E-06 -1.297584E-02  2.758116E-02  3.144613E-03
# Covariance matrix:
  4.1674E-13 -4.4718E-13 -5.4585E-14  1.7895E-13  4.8868E-13 -1.3644E-12
 -4.4718E-13  1.0242E-12  1.3307E-13 -4.4046E-13 -4.6617E-13  3.3564E-12
 -5.4585E-14  1.3307E-13  1.7704E-13 -7.6386E-14 -5.4882E-14  4.4125E-13
  1.7895E-13 -4.4046E-13 -7.6386E-14  2.0119E-13  1.7503E-13 -1.4618E-12
  4.8868E-13 -4.6617E-13 -5.4882E-14  1.7503E-13  1.3329E-12 -1.3366E-12
 -1.3644E-12  3.3564E-12  4.4125E-13 -1.4618E-12 -1.3366E-12  1.1139E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.723912  -38.332373    0.032838   -0.012752   -1.016705  2453229.665953
# Heliocentric elements and errors
Epoch:              2453230.5000  =  2004/08/13
Mean Anomaly:           18.20458 +/-     0.013
Argument of Peri:      151.50085 +/-     0.019
Long of Asc Node:      140.07432 +/-     0.000
Inclination:            24.57218 +/-     0.000
Eccentricity:         0.24208489 +/-    0.0002
Semi-Major Axis:     47.87318674 +/-    0.0153
Time of Perihelion: 2447112.4206 +/-       5.4
Perihelion:          36.28381152 +/-    0.0160
Aphelion:            59.46256196 +/-    0.0220
Period (y)              331.2430 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.21187281 +/-    0.0012
Ecliptic Y          -23.13997540 +/-    0.0010
Ecliptic Z           -0.45837379 +/-    0.0000
Ecliptic XDOT         0.00198201 +/-    0.0000
Ecliptic YDOT         0.00202520 +/-    0.0000
Ecliptic ZDOT        -0.00129178 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.26925313 +/-    0.0011
Geocenter to KBO     36.25660778 +/-    0.0015
# Hcoef:  7.62

The following table shows the complete astrometric record for 04PS107. 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 (04PS107) followed by the observatory code and reference code for the source of the astrometry.

2004 08  12.16521  21 37 07.96   -14 58 05.4   22.5R 04PS107   807  Cl2777      
2004 08  13.10554  21 37 03.18   -14 58 36.7         04PS107   807  Cl2777      
2004 08  13.21429  21 37 02.62   -14 58 40.3         04PS107   807  Cl2777      
2004 09  11.04469  21 34 42.24   -15 13 44.6   23.1R 04PS107   304  Cl4404      
2004 09  11.07260  21 34 42.10   -15 13 44.8         04PS107   304  Cl4404      
2004 10  12.11737  21 32 58.74   -15 25 37.0   23.9R 04PS107   695  Cl8416      
2004 10  12.22241  21 32 58.52   -15 25 38.4         04PS107   695  Cl8416      
2005 08  08.09890  21 44 50.86   -15 05 52.9   22.3R 04PS107   807  Co3996      
2005 08  08.21556  21 44 50.28   -15 05 57.2         04PS107   807  Co3996      
2005 08  09.10368  21 44 45.83   -15 06 26.4         04PS107   807  Co3996      
2014 07  29.37752  22 49 44.58   -15 48 41.0   23.3R 04PS107   G37  C~16aQ      
2014 07  29.42552  22 49 44.41   -15 48 42.9         04PS107   G37  C~16aQ      

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    -0.12       0.00     0.10
  2   0.0026      0.00     0.03       0.00    -0.20
  3   0.0029      0.00     0.09       0.00    -0.21
  4   0.0818      0.00     0.35       0.00    -0.29
  5   0.0819      0.00     0.13       0.00     0.31
  6   0.1669      0.00    -0.10       0.00    -0.12
  7   0.1672      0.00    -0.04       0.00     0.19
  8   0.9882      0.00    -0.04       0.00     0.25
  9   0.9885      0.00     0.17       0.00    -0.13
 10   0.9909      0.00     0.10       0.00     0.37
 11   9.9609      0.00    -0.06       0.00     0.08
 12   9.9610      0.00     0.16       0.00    -0.07

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.

04PS107    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        48.207    48.207    48.207
ecceobj         0.246     0.246     0.246
incobj         24.504    24.504    24.504
qmin           34.852    34.899    34.935
qmax           62.239    62.082    62.134
amean          48.192    48.198    48.206
amin           47.645    47.645    47.618
amax           48.785    48.782    48.805
emean           0.252     0.251     0.252
emin            0.230     0.227     0.230
emax            0.277     0.273     0.273
imean          22.964    22.975    22.955
imin           22.158    22.196    22.266
imax           23.580    23.581    23.597
excite_mean     0.465     0.464     0.464
fracstop        1.000     1.000     1.000
cjmean          2.880     2.880     2.880

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       183.1     187.4     190.6
kozaiamp        180.0     180.0     179.9