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: 02PW152
# Created Fri Apr 19 01:10:49 2024
# Orbit generated from Bernstein formalism
# Fitting 6 observations of 6
# Arc: 2.35d
# First observation: 2002/08/12
# Last observation: 2002/08/15
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit: 8.03 DOF: 8 RMS: 0.20
# Min/Max residuals: -0.28 0.32
# Exact a, adot, b, bdot, g, gdot:
1.334439E-05 2.128096E-02 -8.112544E-07 -2.706477E-03 2.258412E-02 0.000000E+00
# Covariance matrix:
2.9429E-11 4.1008E-08 8.2804E-15 3.1629E-11 6.7840E-09 0.0000E+00
4.1008E-08 5.8203E-05 1.1684E-11 4.4807E-08 9.6069E-06 0.0000E+00
8.2804E-15 1.1684E-11 4.2024E-13 -7.1901E-11 1.9310E-12 0.0000E+00
3.1629E-11 4.4807E-08 -7.1901E-11 2.9523E-08 7.3989E-09 0.0000E+00
6.7840E-09 9.6069E-06 1.9310E-12 7.3989E-09 1.5865E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.5158E-04
# lat0 lon0 xBary yBary zBary JD0
0.223030 -50.773898 -0.187301 0.003861 -0.999431 2452499.494353
# Heliocentric elements and errors
Epoch: 2452490.5000 = 2002/08/04
Mean Anomaly: 5.94229 +/- 27.369
Argument of Peri: 171.94879 +/- 93.844
Long of Asc Node: 131.17781 +/- 0.638
Inclination: 7.26864 +/- 2.637
Eccentricity: 0.02889459 +/- 0.5569
Semi-Major Axis: 46.61360507 +/- 24.1783
Time of Perihelion: 2450571.7480 +/- 357563.6
Perihelion: 45.26672389 +/- 35.0016
Aphelion: 47.96048625 +/- 35.9539
Period (y) 318.2565 +/- 247.62
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 28.77824923 +/- 1.5615
Ecliptic Y -34.95082569 +/- 1.9131
Ecliptic Z 0.17231957 +/- 0.0096
Ecliptic XDOT 0.00199158 +/- 0.0011
Ecliptic YDOT 0.00162783 +/- 0.0013
Ecliptic ZDOT -0.00032789 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.27446896 +/- 1.7794
Geocenter to KBO 44.27889635 +/- 2.4695
# Hcoef: 9.03
The following table shows the complete astrometric record for 02PW152. 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 (02PW152) followed by the observatory code and reference code for the source of the astrometry.
2002 08 12.99361 20 46 23.88 -17 43 55.6 02PW152 807 Cg3360 2002 08 13.11455 20 46 23.31 -17 43 57.7 25.2R 02PW152 807 Cg3360 2002 08 13.16955 20 46 23.05 -17 43 58.7 02PW152 807 Cg3360 2002 08 15.03923 20 46 14.89 -17 44 34.2 02PW152 807 Cg3360 2002 08 15.18369 20 46 14.26 -17 44 36.6 02PW152 807 Cg3360 2002 08 15.34076 20 46 13.58 -17 44 39.2 02PW152 807 Cg3360
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 0.32 0.00 -0.22
2 0.0003 -8.41 -0.06 0.13 0.09
3 0.0005 -12.26 -0.25 0.14 0.19
4 0.0056 -134.07 -0.23 -3.32 -0.28
5 0.0060 -143.39 -0.02 -3.26 -0.01
6 0.0064 -153.44 0.24 -3.21 0.23
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.
02PW152 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0