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: 00PQ30 # Created Wed Dec 25 02:08:05 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 11 observations of 11 # Arc: 14.81y # First observation: 2000/08/03 # Last observation: 2015/05/28 # Chi-squared of fit: 6.89 DOF: 16 RMS: 0.14 # Min/Max residuals: -0.31 0.21 # Exact a, adot, b, bdot, g, gdot: 1.526236E-05 2.393687E-02 1.119226E-06 1.309811E-05 2.460509E-02 1.798465E-03 # Covariance matrix: 5.4830E-13 7.6921E-11 5.3361E-16 7.6460E-14 1.8501E-11 2.0788E-10 7.6921E-11 1.1361E-07 2.7607E-13 1.1831E-10 1.8551E-08 3.0603E-07 5.3361E-16 2.7607E-13 2.4500E-13 -1.6266E-14 5.3273E-14 7.4453E-13 7.6460E-14 1.1831E-10 -1.6266E-14 1.2565E-13 1.9232E-11 3.1869E-10 1.8501E-11 1.8551E-08 5.3273E-14 1.9232E-11 3.1694E-09 4.9985E-08 2.0788E-10 3.0603E-07 7.4453E-13 3.1869E-10 4.9985E-08 8.2435E-07 # lat0 lon0 xBary yBary zBary JD0 -0.778925 -40.321177 0.156197 -0.013787 -1.001902 2451759.763613 # Heliocentric elements and errors Epoch: 2451760.5000 = 2000/08/04 Mean Anomaly: 83.36112 +/- 21.773 Argument of Peri: 180.93856 +/- 25.478 Long of Asc Node: 47.37481 +/- 0.025 Inclination: 0.76062 +/- 0.000 Eccentricity: 0.06808441 +/- 0.0373 Semi-Major Axis: 41.78210802 +/- 1.1229 Time of Perihelion: 2428917.9280 +/- 6036.9 Perihelion: 38.93739795 +/- 1.8783 Aphelion: 44.62681808 +/- 1.9676 Period (y) 270.0808 +/- 10.89 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.65285504 +/- 0.0751 Ecliptic Y -27.05863683 +/- 0.0638 Ecliptic Z -0.55247192 +/- 0.0013 Ecliptic XDOT 0.00186890 +/- 0.0001 Ecliptic YDOT 0.00190678 +/- 0.0000 Ecliptic ZDOT -0.00000111 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.64582507 +/- 0.0706 Geocenter to KBO 40.64199601 +/- 0.0986 # Hcoef: 8.62
The following table shows the complete astrometric record for 00PQ30. 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 (00PQ30) followed by the observatory code and reference code for the source of the astrometry.
2000 08 03.26287 21 29 23.34 -15 39 16.9 24.0R 00PQ30 809 Cb9232 2000 08 03.29806 21 29 23.17 -15 39 17.4 24.6R 00PQ30 809 Cb9232 2000 08 03.32657 21 29 23.01 -15 39 18.2 23.8R 00PQ30 809 Cb9232 2000 08 08.19662 21 28 59.96 -15 41 09.0 24.0R 00PQ30 809 Cb9232 2000 08 08.24458 21 28 59.73 -15 41 10.3 24.3R 00PQ30 809 Cb9232 2000 08 08.29114 21 28 59.48 -15 41 11.4 23.9R 00PQ30 809 Cb9232 2015 05 27.361839 22 47 53.25 -08 24 20.0 24.8r 00PQ30 W84 C~1j7P 2015 05 27.383308 22 47 53.27 -08 24 19.7 25.4r 00PQ30 W84 C~1j7P 2015 05 27.404799 22 47 53.28 -08 24 19.7 25.5r 00PQ30 W84 C~1j7P 2015 05 27.426352 22 47 53.32 -08 24 19.4 25.3r 00PQ30 W84 C~1j7P 2015 05 28.361081 22 47 54.47 -08 24 13.7 25.7r 00PQ30 W84 C~1j7P
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 0.10 0.00 -0.21
2 0.0001 0.00 0.08 0.00 0.09
3 0.0002 0.00 -0.28 0.00 -0.07
4 0.0135 0.00 0.03 0.00 0.21
5 0.0136 0.00 0.06 0.00 0.00
6 0.0138 0.00 -0.31 0.00 -0.04
7 14.8120 0.00 0.04 0.00 -0.07
8 14.8121 0.00 -0.05 0.00 0.09
9 14.8122 0.00 -0.28 0.00 -0.05
10 14.8122 0.00 -0.07 0.00 0.11
11 14.8148 0.00 -0.01 0.00 -0.17
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.
00PQ30 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 41.864 41.864 41.864 ecceobj 0.068 0.068 0.068 incobj 0.761 0.761 0.761 qmin 38.423 38.423 38.422 qmax 45.443 45.443 45.442 amean 41.825 41.824 41.824 amin 41.500 41.498 41.499 amax 42.154 42.153 42.154 emean 0.039 0.039 0.039 emin 0.001 0.002 0.001 emax 0.079 0.079 0.079 imean 2.803 2.803 2.803 imin 1.004 1.005 1.004 imax 4.268 4.265 4.268 excite_mean 0.066 0.066 0.066 fracstop 1.000 1.000 1.000 cjmean 3.071 3.071 3.071 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 173.2 173.1 173.4 kozaiamp 180.0 179.9 180.0