Orbit Fit and Astrometric record for 02PO149

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: 02PO149   
# Created Mon Oct 23 01:37:20 2017
# Orbit generated from Bernstein formalism
# Fitting   13 observations of   13
# Arc:  11.96y
# First observation: 2002/08/11
#  Last observation: 2014/07/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000059   0.020162   0.000004  -0.000015   0.022446   0.000000
# Chi-squared of fit:    21.32 DOF:   20 RMS:  0.23
# Min/Max residuals:    -0.82    0.45
# Exact a, adot, b, bdot, g, gdot:
  1.567580E-05  2.001940E-02  3.961472E-06 -1.395503E-05  2.216282E-02  9.766931E-04
# Covariance matrix:
  4.0399E-13 -2.3702E-13 -2.1466E-16  1.2919E-16  1.6875E-14 -8.2701E-13
 -2.3702E-13  4.1538E-13 -3.4875E-16 -2.6200E-16  4.1434E-13  1.6388E-12
 -2.1466E-16 -3.4875E-16  1.7197E-13 -2.0285E-14 -1.1628E-15 -1.5456E-15
  1.2919E-16 -2.6200E-16 -2.0285E-14  7.0062E-15 -2.8578E-16 -1.0550E-15
  1.6875E-14  4.1434E-13 -1.1628E-15 -2.8578E-16  8.9957E-13  1.7493E-12
 -8.2701E-13  1.6388E-12 -1.5456E-15 -1.0550E-15  1.7493E-12  6.5922E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.684658  -21.969073    0.344184   -0.011452   -0.957175  2452497.833213
# Heliocentric elements and errors
Epoch:              2452490.5000  =  2002/08/04
Mean Anomaly:          139.68575 +/-     0.094
Argument of Peri:      122.25340 +/-     0.091
Long of Asc Node:       71.23667 +/-     0.021
Inclination:             0.67160 +/-     0.000
Eccentricity:         0.06315708 +/-    0.0001
Semi-Major Axis:     43.89399726 +/-    0.0053
Time of Perihelion: 2411275.4593 +/-      26.7
Perihelion:          41.12178052 +/-    0.0070
Aphelion:            46.66621400 +/-    0.0075
Period (y)              290.8144 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.60016969 +/-    0.0018
Ecliptic Y          -17.55007878 +/-    0.0007
Ecliptic Z           -0.53899956 +/-    0.0000
Ecliptic XDOT         0.00102930 +/-    0.0000
Ecliptic YDOT         0.00224573 +/-    0.0000
Ecliptic ZDOT        -0.00000296 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.07678639 +/-    0.0017
Geocenter to KBO     45.12060293 +/-    0.0019
# Hcoef:  6.55

The following table shows the complete astrometric record for 02PO149. 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 (02PO149) followed by the observatory code and reference code for the source of the astrometry.

2002 08  11.33247  22 39 47.68   -09 11 35.4   22.1R 02PO149   807  Cg3357      
2002 08  12.30038  22 39 43.91   -09 11 57.3         02PO149   807  Cg3357      
2002 08  12.37854  22 39 43.60   -09 11 59.2         02PO149   807  Cg3357      
2003 08  25.24172  22 43 10.58   -08 51 25.1   22.1R 02PO149   807  Cj4656      
2003 08  25.34637  22 43 10.14   -08 51 27.5         02PO149   807  Cj4656      
2003 10  24.13064  22 39 34.98   -09 12 33.6   23.3R 02PO149   695  Cj4656      
2003 10  24.25318  22 39 34.68   -09 12 35.2         02PO149   695  Cj4656      
2004 08  23.11057  22 47 33.15   -08 25 02.3   22.9R 02PO149   304  Cl4338      
2004 08  23.16593  22 47 32.89   -08 25 04.0         02PO149   304  Cl4338      
2004 11  10.16302  22 43 20.20   -08 49 52.5   23.4R 02PO149   695  Cl9843      
2004 11  11.13762  22 43 19.25   -08 49 57.2         02PO149   695  Cl9843      
2014 07  29.39913  23 31 02.90   -03 51 32.3   23.4R 02PO149   G37  C~16a9      
2014 07  29.44709  23 31 02.77   -03 51 33.0         02PO149   G37  C~16a9      

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    -0.29       0.00    -0.82
  2   0.0026    -59.96     0.05       0.55     0.03
  3   0.0029    -64.93     0.03       0.50    -0.02
  4   1.0374   3240.60     0.09      -4.41     0.26
  5   1.0377   3233.65     0.14      -4.18     0.45
  6   1.2014   -196.18     0.21      16.27     0.11
  7   1.2017   -200.89    -0.01      16.45     0.14
  8   2.0336   7446.83     0.27      -7.20     0.07
  9   2.0338   7442.61    -0.28      -7.32    -0.05
 10   2.2500   3407.57    -0.13      27.81    -0.09
 11   2.2527   3392.76    -0.08      28.75     0.01
 12  11.9646  50656.00    -0.01     -29.88    -0.11
 13  11.9647  50653.81     0.01     -29.75     0.03

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.

02PO149    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.222    44.238    44.206
ecceobj         0.057     0.057     0.057
incobj          0.672     0.672     0.672
qmin           40.609    40.638    40.582
qmax           47.760    47.842    47.829
amean          44.084    44.098    44.067
amin           43.732    43.746    43.716
amax           44.444    44.473    44.440
emean           0.059     0.059     0.059
emin            0.042     0.042     0.043
emax            0.075     0.076     0.076
imean           1.277     1.276     1.278
imin            0.504     0.506     0.502
imax            1.812     1.810     1.817
excite_mean     0.064     0.064     0.064
fracstop        1.000     1.000     1.000
cjmean          3.098     3.098     3.097

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       153.6     154.4     153.3
kozaiamp        179.9     179.9     180.0