The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory.
# Object: 02XH91
# Created Fri May 2 02:36:51 2008
# Orbit generated from Bernstein formalism
# Fitting 13 observations of 13
# Arc: 3.16y
# First observation: 2002/12/04
# Last observation: 2006/01/30
Preliminary a, adot, b, bdot, g, gdot:
-0.000022 0.018530 -0.000002 0.001515 0.021329 0.000000
# Chi-squared of fit: 22.40 DOF: 20 RMS: 0.23
# Min/Max residuals: -0.78 0.52
# Exact a, adot, b, bdot, g, gdot:
1.329225E-05 1.851342E-02 2.374105E-06 1.512956E-03 2.134760E-02 -2.812749E-04
# Covariance matrix:
3.0630E-13 -1.5633E-13 3.4170E-15 -1.0192E-14 1.0477E-13 -2.2559E-12
-1.5633E-13 7.3290E-13 -2.0700E-14 6.9718E-14 4.8575E-13 1.5347E-11
3.4170E-15 -2.0700E-14 2.4103E-13 -1.0964E-13 -1.1467E-14 -5.2646E-13
-1.0192E-14 6.9718E-14 -1.0964E-13 9.8441E-14 4.1624E-14 1.7502E-12
1.0477E-13 4.8575E-13 -1.1467E-14 4.1624E-14 6.9071E-13 9.1345E-12
-2.2559E-12 1.5347E-11 -5.2646E-13 1.7502E-12 9.1345E-12 3.8550E-10
# lat0 lon0 xBary yBary zBary JD0
1.730661 100.906557 0.475978 0.025909 -0.857831 2452612.921443
# Heliocentric elements and errors
Epoch: 2452610.5000 = 2002/12/02
Mean Anomaly: 199.71411 +/- 0.634
Argument of Peri: 183.17593 +/- 0.634
Long of Asc Node: 80.42456 +/- 0.004
Inclination: 4.97888 +/- 0.001
Eccentricity: 0.08286459 +/- 0.0003
Semi-Major Axis: 44.22804272 +/- 0.0047
Time of Perihelion: 2500444.6207 +/- 189.0
Perihelion: 40.56310405 +/- 0.0150
Aphelion: 47.89298140 +/- 0.0152
Period (y) 294.1405 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -8.55592243 +/- 0.0003
Ecliptic Y 46.91411125 +/- 0.0018
Ecliptic Z 1.41484369 +/- 0.0001
Ecliptic XDOT -0.00233085 +/- 0.0000
Ecliptic YDOT -0.00049414 +/- 0.0000
Ecliptic ZDOT 0.00019307 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.70890300 +/- 0.0018
Geocenter to KBO 46.84367760 +/- 0.0018
# Hcoef: 5.46
The following table shows the complete astrometric record for 02XH91. 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 (02XH91) followed by the observatory code and reference code for the source of the astrometry.
2002 12 04.42070 06 48 03.97 +24 42 58.1 21.7R 02XH91 695 Ch0143 2002 12 04.53015 06 48 03.50 +24 42 59.0 02XH91 695 Ch0143 2002 12 05.41051 06 47 59.83 +24 43 05.0 02XH91 695 Ch0143 2003 01 30.21185 06 43 40.93 +24 48 30.4 22.3R 02XH91 688 Ch1704 2003 01 30.29347 06 43 40.57 +24 48 30.7 02XH91 688 Ch1704 2003 11 23.42341 06 53 28.77 +24 41 17.2 22.0R 02XH91 695 Ck0870 2003 11 23.49215 06 53 28.53 +24 41 18.1 02XH91 695 Ck0870 2004 02 27.15632 06 46 50.81 +24 50 01.0 22.1R 02XH91 695 Ck0870 2004 02 27.26209 06 46 50.56 +24 50 01.1 02XH91 695 Ck0870 2005 02 09.16872 06 52 23.85 +24 49 01.0 21.5R 02XH91 688 Cm6760 2005 02 09.28174 06 52 23.42 +24 49 01.7 02XH91 688 Cm6760 2006 01 30.22163 06 57 46.24 +24 47 19.4 22.0R 02XH91 688 Cq1751 2006 01 30.34382 06 57 45.75 +24 47 21.3 02XH91 688 Cq1751
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 0.09 0.00 -0.26 2 0.0003 -6.46 -0.02 0.37 -0.08 3 0.0027 -56.79 0.18 2.21 0.03 4 0.1555 -3598.22 0.08 48.72 0.04 5 0.1557 -3603.13 -0.15 48.65 0.00 6 0.9692 4418.61 -0.11 288.02 -0.07 7 0.9694 4415.27 -0.12 288.62 0.37 8 1.2313 -1027.64 -0.09 340.04 0.00 9 1.2316 -1031.04 -0.06 339.86 -0.03 10 2.1841 3495.13 0.19 668.82 0.00 11 2.1844 3489.24 0.05 668.98 0.26 12 3.1562 7878.04 -0.22 987.84 -0.78 13 3.1565 7871.20 0.20 989.06 0.52
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.
02XH91 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.106 44.106 44.106 ecceobj 0.085 0.085 0.085 incobj 4.976 4.976 4.976 qmin 39.521 39.521 39.521 qmax 48.649 48.649 48.649 amean 43.971 43.971 43.971 amin 43.615 43.615 43.615 amax 44.346 44.346 44.346 emean 0.080 0.080 0.080 emin 0.062 0.062 0.062 emax 0.098 0.098 0.098 imean 3.036 3.036 3.036 imin 2.239 2.239 2.239 imax 3.723 3.723 3.723 fracstop 1.000 1.000 1.000 cjmean 3.090 3.090 3.090 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 190.1 190.1 190.2 kozaiamp 180.0 180.0 180.0