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: 03QX90 # Created Wed Dec 25 02:08:25 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 20 observations of 20 # Arc: 20.04y # First observation: 2003/08/24 # Last observation: 2023/09/06 # Chi-squared of fit: 45.53 DOF: 34 RMS: 0.27 # Min/Max residuals: -0.53 0.77 # Exact a, adot, b, bdot, g, gdot: 1.615951E-05 2.130559E-02 -9.652710E-08 -3.458985E-04 2.288857E-02 5.918646E-05 # Covariance matrix: 1.6200E-13 -2.9983E-14 3.0002E-16 3.2095E-16 -3.2048E-14 -4.9856E-14 -2.9983E-14 2.0442E-14 7.8075E-17 -3.0266E-16 1.3187E-14 4.5020E-14 3.0002E-16 7.8075E-17 1.3611E-13 -8.2819E-15 -4.1025E-15 3.4963E-16 3.2095E-16 -3.0266E-16 -8.2819E-15 1.1152E-15 -3.8091E-18 -7.1303E-16 -3.2048E-14 1.3187E-14 -4.1025E-15 -3.8091E-18 1.9381E-13 2.3246E-14 -4.9856E-14 4.5020E-14 3.4963E-16 -7.1303E-16 2.3246E-14 1.0515E-13 # lat0 lon0 xBary yBary zBary JD0 -3.137493 -45.548729 -0.277791 -0.053414 -0.975226 2452875.537223 # Heliocentric elements and errors Epoch: 2452876.5000 = 2003/08/25 Mean Anomaly: 159.67059 +/- 0.055 Argument of Peri: 92.79656 +/- 0.050 Long of Asc Node: 61.32679 +/- 0.002 Inclination: 3.20101 +/- 0.000 Eccentricity: 0.02703981 +/- 0.0001 Semi-Major Axis: 43.55350046 +/- 0.0031 Time of Perihelion: 2406311.9445 +/- 16.7 Perihelion: 42.37582192 +/- 0.0038 Aphelion: 44.73117900 +/- 0.0039 Period (y) 287.4371 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.43026717 +/- 0.0006 Ecliptic Y -31.63968957 +/- 0.0006 Ecliptic Z -2.39125369 +/- 0.0000 Ecliptic XDOT 0.00181734 +/- 0.0000 Ecliptic YDOT 0.00177557 +/- 0.0000 Ecliptic ZDOT -0.00004153 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.66149596 +/- 0.0006 Geocenter to KBO 43.68996104 +/- 0.0008 # Hcoef: 6.72
The following table shows the complete astrometric record for 03QX90. 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 (03QX90) followed by the observatory code and reference code for the source of the astrometry.
2003 08 24.03648 21 11 32.05 -19 29 45.8 21.8R 03QX90 807 Ci4137 2003 08 24.14308 21 11 31.58 -19 29 47.7 03QX90 807 Ci4137 2003 08 25.05255 21 11 27.60 -19 30 03.9 03QX90 807 Ci4137 2003 10 01.26065 21 09 15.43 -19 38 07.9 23.2R 03QX90 568 Ci6964 2003 10 01.35035 21 09 15.18 -19 38 08.7 03QX90 568 Ci6964 2003 10 02.30460 21 09 12.93 -19 38 15.1 03QX90 568 Ci6964 2003 10 22.12061 21 08 42.83 -19 39 07.4 23.4R 03QX90 695 Cj8802 2003 10 23.10437 21 08 42.24 -19 39 05.9 03QX90 695 Cj8802 2004 05 28.24123 21 21 31.37 -18 43 12.3 03QX90 304 Cn6523 2004 05 28.29809 21 21 31.29 -18 43 12.7 03QX90 304 Cn6523 2005 06 07.39127 21 26 09.46 -18 23 27.8 23.2R 03QX90 304 Cn6523 2005 06 07.43225 21 26 09.39 -18 23 28.2 03QX90 304 Cn6523 2013 10 05.17090 21 57 25.79 -15 54 41.2 22.8R 03QX90 695 C~0zdV 2013 10 05.27332 21 57 25.46 -15 54 42.7 03QX90 695 C~0zdV 2013 10 06.20861 21 57 22.82 -15 54 53.0 03QX90 695 C~0zdV 2020 08 12.271170 22 33 46.768 -12 33 55.10 23.1G 03QX90 G37 C~43qE 2020 08 12.320530 22 33 46.553 -12 33 56.15 03QX90 G37 C~43qE 2023 09 06.266880 22 45 55.015 -11 20 52.97 23.1G 03QX90 G37 C~7AOM 2023 09 06.303420 22 45 54.851 -11 20 53.82 03QX90 G37 C~7AOM 2023 09 06.340200 22 45 54.691 -11 20 54.71 03QX90 G37 C~7AOM
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 -0.29 0.00 -0.12
2 0.0003 0.00 -0.18 0.00 -0.06
3 0.0028 0.00 0.02 0.00 0.16
4 0.1047 0.00 0.77 0.00 0.03
5 0.1049 0.00 0.36 0.00 -0.15
6 0.1075 0.00 0.45 0.00 -0.16
7 0.1618 0.00 -0.53 0.00 -0.18
8 0.1645 0.00 -0.38 0.00 -0.20
9 0.7617 0.00 0.44 0.00 -0.18
10 0.7618 0.00 0.06 0.00 -0.08
11 1.7888 0.00 -0.26 0.00 0.25
12 1.7889 0.00 -0.28 0.00 0.33
13 10.1167 0.00 0.05 0.00 0.34
14 10.1170 0.00 -0.35 0.00 0.03
15 10.1196 0.00 0.02 0.00 0.50
16 16.9698 0.00 0.13 0.00 -0.20
17 16.9700 0.00 -0.01 0.00 -0.00
18 20.0362 0.00 0.06 0.00 -0.16
19 20.0363 0.00 -0.00 0.00 -0.09
20 20.0364 0.00 0.01 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.
03QX90 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.844 43.844 43.843 ecceobj 0.019 0.019 0.019 incobj 3.204 3.204 3.204 qmin 41.815 41.813 41.818 qmax 46.015 46.017 46.011 amean 43.825 43.825 43.825 amin 43.490 43.489 43.492 amax 44.162 44.162 44.163 emean 0.026 0.026 0.026 emin 0.009 0.009 0.009 emax 0.042 0.042 0.042 imean 1.893 1.893 1.893 imin 1.122 1.122 1.122 imax 2.491 2.491 2.492 excite_mean 0.043 0.043 0.043 fracstop 1.000 1.000 1.000 cjmean 3.097 3.097 3.097 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 169.0 169.0 168.9 kozaiamp 180.0 180.0 179.9