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: 00QL252
# Created Wed Dec 25 02:08:06 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 9 observations of 9
# Arc: 20.22y
# First observation: 2000/07/31
# Last observation: 2020/10/20
# Chi-squared of fit: 3.85 DOF: 12 RMS: 0.12
# Min/Max residuals: -0.17 0.17
# Exact a, adot, b, bdot, g, gdot:
1.580839E-05 2.832416E-02 -6.112253E-06 -1.235321E-02 2.776454E-02 5.709532E-03
# Covariance matrix:
6.2625E-13 1.3350E-13 6.2559E-14 -4.4650E-14 1.0719E-12 1.6913E-13
1.3350E-13 1.8191E-13 9.1904E-14 -6.4327E-14 7.9545E-13 2.5098E-13
6.2559E-14 9.1904E-14 3.3047E-13 -5.1186E-14 3.8015E-13 1.3154E-13
-4.4650E-14 -6.4327E-14 -5.1186E-14 2.6100E-14 -2.6768E-13 -9.1904E-14
1.0719E-12 7.9545E-13 3.8015E-13 -2.6768E-13 4.2739E-12 1.0350E-12
1.6913E-13 2.5098E-13 1.3154E-13 -9.1904E-14 1.0350E-12 3.5956E-13
# lat0 lon0 xBary yBary zBary JD0
2.986879 -23.475035 0.484526 0.046300 -0.890459 2451756.825523
# Heliocentric elements and errors
Epoch: 2451756.5000 = 2000/07/31
Mean Anomaly: 30.27683 +/- 0.025
Argument of Peri: 122.39247 +/- 0.036
Long of Asc Node: 162.47138 +/- 0.000
Inclination: 23.60460 +/- 0.000
Eccentricity: 0.25732132 +/- 0.0002
Semi-Major Axis: 46.02787321 +/- 0.0165
Time of Perihelion: 2442163.8705 +/- 9.4
Perihelion: 34.18391993 +/- 0.0144
Aphelion: 57.87182649 +/- 0.0221
Period (y) 312.2767 +/- 0.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 33.62217937 +/- 0.0024
Ecliptic Y -15.12284497 +/- 0.0011
Ecliptic Z 1.87651838 +/- 0.0001
Ecliptic XDOT 0.00167941 +/- 0.0000
Ecliptic YDOT 0.00231818 +/- 0.0000
Ecliptic ZDOT -0.00118700 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.91428932 +/- 0.0023
Geocenter to KBO 36.01708681 +/- 0.0027
# Hcoef: 7.53
The following table shows the complete astrometric record for 00QL252. 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 (00QL252) followed by the observatory code and reference code for the source of the astrometry.
2000 07 31.32478 22 28 39.54 -06 20 24.7 22.5R 00QL252 807 Ch1309 2000 07 31.40464 22 28 39.18 -06 20 27.0 00QL252 807 Ch1309 2000 08 27.14216 22 26 33.62 -06 35 28.8 22.7R 00QL252 807 Ch1309 2000 08 27.21448 22 26 33.24 -06 35 31.5 00QL252 807 Ch1309 2006 10 19.18611 23 04 13.29 -07 20 50.8 23.3R 00QL252 695 Ct0648 2006 10 19.27760 23 04 13.00 -07 20 52.9 00QL252 695 Ct0648 2006 10 20.17742 23 04 10.05 -07 21 16.5 00QL252 695 Ct0648 2020 10 20.132700 00 30 21.157 -07 10 29.52 23.7G 00QL252 G37 C~4NCy 2020 10 20.180590 00 30 20.954 -07 10 30.69 00QL252 G37 C~4NCy
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 0.13 0.00 -0.15
2 0.0002 0.00 -0.08 0.00 -0.06
3 0.0734 0.00 0.10 0.00 0.16
4 0.0736 0.00 -0.15 0.00 0.09
5 6.2173 0.00 -0.17 0.00 -0.12
6 6.2175 0.00 0.14 0.00 0.17
7 6.2200 0.00 0.04 0.00 -0.10
8 20.2212 0.00 -0.01 0.00 -0.04
9 20.2214 0.00 -0.00 0.00 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.
00QL252 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 46.133 46.133 46.132 ecceobj 0.259 0.259 0.259 incobj 23.589 23.589 23.589 qmin 33.380 33.585 33.174 qmax 59.338 59.306 59.711 amean 46.044 46.093 46.079 amin 45.543 45.583 45.568 amax 46.614 46.633 46.733 emean 0.252 0.250 0.256 emin 0.230 0.228 0.230 emax 0.274 0.272 0.280 imean 23.129 23.221 23.011 imin 22.480 22.597 22.255 imax 23.885 23.935 23.834 excite_mean 0.467 0.467 0.467 fracstop 1.000 1.000 1.000 cjmean 2.856 2.856 2.856 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 180.0 179.4 180.6 kozaiamp 180.0 180.0 179.9