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: 01XB255
# Created Sat Apr 20 01:10:37 2024
# Orbit generated from Bernstein formalism
# Fitting 6 observations of 6
# Arc: 35.88d
# First observation: 2001/12/09
# Last observation: 2002/01/14
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.025008 -0.000000 0.000707 0.024031 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 1.03 DOF: 7 RMS: 0.07
# Min/Max residuals: -0.16 0.13
# Exact a, adot, b, bdot, g, gdot:
1.381682E-05 2.092088E-02 2.981531E-07 7.215770E-04 2.330039E-02 -8.931494E-03
# Covariance matrix:
4.1921E-12 6.3310E-09 -1.1094E-13 -2.4947E-11 1.0738E-09 2.6303E-08
6.3310E-09 1.0647E-05 -1.8519E-10 -4.2235E-08 1.7973E-06 4.0467E-05
-1.1094E-13 -1.8519E-10 3.8073E-13 -3.2385E-12 -3.1334E-11 -7.4088E-10
-2.4947E-11 -4.2235E-08 -3.2385E-12 2.8654E-10 -7.1119E-09 -1.5157E-07
1.0738E-09 1.7973E-06 -3.1334E-11 -7.1119E-09 3.0382E-07 7.0468E-06
2.6303E-08 4.0467E-05 -7.4088E-10 -1.5157E-07 7.0468E-06 2.6308E-04
# lat0 lon0 xBary yBary zBary JD0
1.374114 106.154688 0.470320 0.020517 -0.858499 2452252.959023
# Heliocentric elements and errors
Epoch: 2452250.5000 = 2001/12/07
Mean Anomaly: 301.91374 +/- 60.019
Argument of Peri: 139.52555 +/- 17.562
Long of Asc Node: 71.38365 +/- 4.573
Inclination: 2.39833 +/- 0.282
Eccentricity: 0.40470512 +/- 0.6869
Semi-Major Axis: 46.75000594 +/- 23.3908
Time of Perihelion: 2471088.8046 +/- 13379.1
Perihelion: 27.83003924 +/- 35.0035
Aphelion: 65.66997263 +/- 45.9450
Period (y) 319.6544 +/- 239.90
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -11.72365383 +/- 0.2823
Ecliptic Y 42.17235849 +/- 0.9749
Ecliptic Z 1.02919148 +/- 0.0243
Ecliptic XDOT -0.00207730 +/- 0.0008
Ecliptic YDOT -0.00169369 +/- 0.0018
Ecliptic ZDOT 0.00005981 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.78368549 +/- 0.9421
Geocenter to KBO 42.91773885 +/- 1.0153
# Hcoef: 6.44
The following table shows the complete astrometric record for 01XB255. 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 (01XB255) followed by the observatory code and reference code for the source of the astrometry.
2001 12 09.45828 07 10 48.466 +23 49 34.03 01XB255 568 Ce7056 2001 12 09.51117 07 10 48.214 +23 49 34.61 01XB255 568 Ce7056 2001 12 09.54498 07 10 48.063 +23 49 34.75 01XB255 568 Ce7056 2001 12 12.336806 07 10 35.37 +23 49 59.5 22.1r 01XB255 568 C~5V8C 2002 01 14.30315 07 07 47.842 +23 54 57.04 22.7R 01XB255 568 Ce7056 2002 01 14.33693 07 07 47.660 +23 54 57.22 22.9R 01XB255 568 Ce7056
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 0.08 0.00 0.04
2 0.0001 -3.50 -0.08 0.16 0.13
3 0.0002 -5.58 -0.01 0.05 -0.02
4 0.0079 -181.45 0.02 3.58 -0.16
5 0.0981 -2498.53 0.02 27.52 0.07
6 0.0982 -2501.03 -0.02 27.41 -0.05
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.
01XB255 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