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: 01XC255 # Created Wed Nov 27 02:08:14 2024 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 56.04d # First observation: 2001/12/09 # Last observation: 2002/02/03 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.068398 0.000001 0.000987 0.031698 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # Chi-squared of fit: 2.45 DOF: 7 RMS: 0.11 # Min/Max residuals: -0.23 0.15 # Exact a, adot, b, bdot, g, gdot: 1.816053E-05 2.863026E-02 3.233968E-07 9.812185E-04 2.519253E-02 -5.053593E-03 # Covariance matrix: 8.8185E-12 1.3016E-08 2.9407E-13 -9.2712E-13 2.0691E-09 -1.7462E-08 1.3016E-08 2.0962E-05 4.7409E-10 -1.5820E-09 3.3290E-06 -2.8734E-05 2.9407E-13 4.7409E-10 6.7749E-13 -5.1123E-12 7.5283E-11 -6.5248E-10 -9.2712E-13 -1.5820E-09 -5.1123E-12 6.1140E-11 -2.5022E-10 2.5082E-09 2.0691E-09 3.3290E-06 7.5283E-11 -2.5022E-10 5.2871E-07 -4.5563E-06 -1.7462E-08 -2.8734E-05 -6.5248E-10 2.5082E-09 -4.5563E-06 4.1752E-05 # lat0 lon0 xBary yBary zBary JD0 -0.287064 106.188118 0.470665 -0.004377 -0.858542 2452252.969033 # Heliocentric elements and errors Epoch: 2452250.5000 = 2001/12/07 Mean Anomaly: 345.40784 +/- 14.031 Argument of Peri: 28.89502 +/- 11.223 Long of Asc Node: 113.65806 +/- 1.240 Inclination: 1.98370 +/- 0.306 Eccentricity: 0.41338589 +/- 0.4322 Semi-Major Axis: 65.06310273 +/- 41.0046 Time of Perihelion: 2460020.4394 +/- 1366.7 Perihelion: 38.16693413 +/- 37.0026 Aphelion: 91.95927133 +/- 64.4160 Period (y) 524.8200 +/- 496.13 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -10.85262968 +/- 0.3193 Ecliptic Y 39.08113739 +/- 1.1003 Ecliptic Z -0.19887380 +/- 0.0057 Ecliptic XDOT -0.00284372 +/- 0.0002 Ecliptic YDOT -0.00139439 +/- 0.0008 Ecliptic ZDOT 0.00010960 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.56050322 +/- 1.0636 Geocenter to KBO 39.69431047 +/- 1.1457 # Hcoef: 7.53
The following table shows the complete astrometric record for 01XC255. 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 (01XC255) followed by the observatory code and reference code for the source of the astrometry.
2001 12 09.46829 07 10 04.987 +22 10 22.78 01XC255 568 Ce7056 2001 12 09.55544 07 10 04.588 +22 10 23.48 01XC255 568 Ce7056 2002 01 14.24544 07 07 01.094 +22 15 41.14 23.3R 01XC255 568 Ce7056 2002 01 14.27270 07 07 00.939 +22 15 41.33 23.2R 01XC255 568 Ce7056 2002 02 03.43082 07 05 20.61 +22 18 34.6 23.2R 01XC255 568 Cf2430 2002 02 03.50406 07 05 20.27 +22 18 35.1 01XC255 568 Cf2430
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 -0.04 0.00 0.06
2 0.0002 -5.59 0.04 0.03 0.08
3 0.0980 -2573.45 0.06 16.77 -0.15
4 0.0980 -2575.61 -0.06 16.71 -0.23
5 0.1532 -3979.16 0.02 31.02 0.15
6 0.1534 -3983.90 -0.02 30.99 0.09
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.
01XC255 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