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: 97RL13
# Created Wed Nov 27 02:07:53 2024
# Orbit generated from Bernstein formalism
# Fitting 4 observations of 4
# Arc: 1.14d
# First observation: 1997/09/05
# Last observation: 1997/09/06
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit: 1.71 DOF: 4 RMS: 0.12
# Min/Max residuals: -0.15 0.15
# Exact a, adot, b, bdot, g, gdot:
1.447716E-05 2.179681E-02 2.612135E-07 1.324182E-03 2.299539E-02 0.000000E+00
# Covariance matrix:
3.2179E-11 4.5327E-08 -9.8656E-13 -1.3872E-09 7.8206E-09 0.0000E+00
4.5327E-08 6.5567E-05 -1.4176E-09 -1.9937E-06 1.1239E-05 0.0000E+00
-9.8656E-13 -1.4176E-09 5.5269E-13 -1.2661E-10 -2.4370E-10 0.0000E+00
-1.3872E-09 -1.9937E-06 -1.2661E-10 2.4718E-07 -3.4270E-07 0.0000E+00
7.8206E-09 1.1239E-05 -2.4370E-10 -3.4270E-07 1.9319E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.6001E-04
# lat0 lon0 xBary yBary zBary JD0
4.604291 4.620475 0.370317 0.074334 -0.925649 2450696.758721
# Heliocentric elements and errors
Epoch: 2450690.5000 = 1997/08/30
Mean Anomaly: 342.33926 +/- 72.180
Argument of Peri: 70.69876 +/- 135.609
Long of Asc Node: 311.97607 +/- 17.729
Inclination: 5.70036 +/- 1.366
Eccentricity: 0.02136193 +/- 0.5693
Semi-Major Axis: 45.34245942 +/- 23.6514
Time of Perihelion: 2456161.4467 +/- 468423.8
Perihelion: 44.37385681 +/- 34.6704
Aphelion: 46.31106202 +/- 35.3530
Period (y) 305.3274 +/- 238.90
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 44.16867424 +/- 2.6116
Ecliptic Y 3.19365308 +/- 0.2109
Ecliptic Z 3.49089485 +/- 0.2110
Ecliptic XDOT -0.00021725 +/- 0.0015
Ecliptic YDOT 0.00259325 +/- 0.0008
Ecliptic ZDOT 0.00015701 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 44.42136368 +/- 2.5968
Geocenter to KBO 43.48697984 +/- 2.6285
# Hcoef: 9.67
The following table shows the complete astrometric record for 97RL13. 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 (97RL13) followed by the observatory code and reference code for the source of the astrometry.
1997 09 05.25799 00 09 37.34 +06 03 40.0 97RL13 675 Ca0527 1997 09 05.40772 00 09 36.73 +06 03 36.3 97RL13 675 Ca0527 1997 09 06.30822 00 09 33.14 +06 03 16.1 25.8R 97RL13 675 Ca0527 1997 09 06.39352 00 09 32.81 +06 03 14.3 97RL13 675 Ca0527
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 0.11 0.00 0.13
2 0.0004 -9.82 -0.11 0.23 -0.15
3 0.0029 -66.98 -0.14 3.06 -0.00
4 0.0031 -72.21 0.15 3.37 0.02
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.
97RL13 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