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: 07RX326 # Created Sun Dec 22 02:09:01 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 24 observations of 24 # Arc: 10.29y # First observation: 2007/09/06 # Last observation: 2017/12/20 # Chi-squared of fit: 62.24 DOF: 42 RMS: 0.28 # Min/Max residuals: -0.65 0.75 # Exact a, adot, b, bdot, g, gdot: 1.636666E-05 2.772302E-02 2.282718E-06 3.045909E-03 2.602364E-02 1.601506E-03 # Covariance matrix: 1.6374E-13 -1.7434E-13 8.8878E-15 -1.0080E-14 1.3673E-14 -6.2501E-13 -1.7434E-13 3.5342E-13 -2.2942E-14 2.0428E-14 -5.7193E-14 1.3444E-12 8.8878E-15 -2.2942E-14 9.1574E-14 -1.3062E-14 2.6670E-14 -9.9047E-14 -1.0080E-14 2.0428E-14 -1.3062E-14 9.9376E-15 2.7094E-15 7.7058E-14 1.3673E-14 -5.7193E-14 2.6670E-14 2.7094E-15 1.7012E-13 -2.9055E-13 -6.2501E-13 1.3444E-12 -9.9047E-14 7.7058E-14 -2.9055E-13 5.2688E-12 # lat0 lon0 xBary yBary zBary JD0 24.899507 -20.603490 -0.072292 0.423190 -0.911574 2454349.808964 # Heliocentric elements and errors Epoch: 2454350.5000 = 2007/09/07 Mean Anomaly: 18.27823 +/- 0.015 Argument of Peri: 51.17085 +/- 0.022 Long of Asc Node: 264.31595 +/- 0.000 Inclination: 25.01664 +/- 0.000 Eccentricity: 0.16028654 +/- 0.0001 Semi-Major Axis: 46.22745510 +/- 0.0055 Time of Perihelion: 2448521.6866 +/- 5.0 Perihelion: 38.81781617 +/- 0.0068 Aphelion: 53.63709403 +/- 0.0081 Period (y) 314.3100 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.59085037 +/- 0.0005 Ecliptic Y -12.55555830 +/- 0.0002 Ecliptic Z 16.17878362 +/- 0.0003 Ecliptic XDOT 0.00104942 +/- 0.0000 Ecliptic YDOT 0.00272216 +/- 0.0000 Ecliptic ZDOT 0.00036150 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.34129193 +/- 0.0005 Geocenter to KBO 38.42660260 +/- 0.0006 # Hcoef: 7.57
The following table shows the complete astrometric record for 07RX326. 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 (07RX326) followed by the observatory code and reference code for the source of the astrometry.
2007 09 06.30821 22 06 08.27 +15 01 46.9 23.0r 07RX326 568 C~1Q3a 2007 09 06.34967 22 06 08.07 +15 01 45.5 07RX326 568 C~1Q3a 2007 09 06.39240 22 06 07.85 +15 01 44.2 23.6r 07RX326 568 C~1Q3a 2007 09 07.30971 22 06 03.49 +15 01 16.0 07RX326 568 C~1Q3a 2007 09 07.35120 22 06 03.29 +15 01 14.5 07RX326 568 C~1Q3a 2007 09 18.29721 22 05 13.24 +14 55 03.4 23.3R 07RX326 675 C~1Q3a 2007 09 18.35665 22 05 13.00 +14 55 01.4 07RX326 675 C~1Q3a 2007 11 09.08175 22 03 01.20 +14 19 57.8 23.4r 07RX326 695 C~1Q3a 2007 11 09.16439 22 03 01.19 +14 19 54.7 23.9r 07RX326 695 C~1Q3a 2008 05 03.45034 22 16 34.86 +15 14 02.2 07RX326 695 C~1Q3a 2008 05 04.47087 22 16 37.71 +15 14 56.5 07RX326 695 C~1Q3a 2008 06 08.31454 22 17 16.52 +15 42 01.0 07RX326 807 C~1Q3a 2008 06 09.36170 22 17 15.87 +15 42 40.6 07RX326 807 C~1Q3a 2008 08 30.31000 22 12 27.26 +15 50 44.0 07RX326 568 C~1Q3b 2008 08 30.37168 22 12 26.96 +15 50 41.9 07RX326 568 C~1Q3b 2008 08 31.29246 22 12 22.44 +15 50 17.2 07RX326 568 C~1Q3b 2008 10 22.08354 22 09 04.79 +15 17 31.9 23.5r 07RX326 695 C~1Q3b 2008 10 22.13806 22 09 04.66 +15 17 29.7 23.4r 07RX326 695 C~1Q3b 2008 10 22.22914 22 09 04.47 +15 17 25.8 23.4r 07RX326 695 C~1Q3b 2009 06 20.42598 22 22 48.51 +16 32 50.4 07RX326 695 C~1Q3b 2009 06 21.39259 22 22 47.00 +16 33 20.0 07RX326 695 C~1Q3b 2009 06 22.35922 22 22 45.42 +16 33 49.1 07RX326 695 C~1Q3b 2017 12 20.09489 23 01 19.159 +20 58 20.29 23.6R 07RX326 G37 C~2UvC 2017 12 20.17221 23 01 19.349 +20 58 18.43 07RX326 G37 C~2UvC
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 -0.04
2 0.0001 0.00 0.16 0.00 -0.19
3 0.0002 0.00 -0.02 0.00 -0.18
4 0.0027 0.00 0.06 0.00 -0.13
5 0.0029 0.00 0.07 0.00 -0.35
6 0.0328 0.00 0.10 0.00 -0.36
7 0.0330 0.00 0.45 0.00 -0.18
8 0.1746 0.00 0.19 0.00 0.07
9 0.1748 0.00 0.46 0.00 0.12
10 0.6575 0.00 0.02 0.00 -0.03
11 0.6603 0.00 -0.13 0.00 0.07
12 0.7557 0.00 -0.29 0.00 0.14
13 0.7585 0.00 -0.50 0.00 0.31
14 0.9829 0.00 -0.65 0.00 0.75
15 0.9831 0.00 -0.52 0.00 0.25
16 0.9856 0.00 -0.57 0.00 -0.04
17 1.1274 0.00 0.02 0.00 -0.17
18 1.1275 0.00 -0.18 0.00 -0.05
19 1.1278 0.00 -0.12 0.00 -0.05
20 1.7881 0.00 0.68 0.00 0.23
21 1.7908 0.00 0.34 0.00 0.03
22 1.7934 0.00 0.22 0.00 0.01
23 10.2883 0.00 -0.04 0.00 -0.16
24 10.2885 0.00 0.07 0.00 0.01
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.
07RX326 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.363 46.363 46.363 ecceobj 0.162 0.162 0.162 incobj 25.048 25.048 25.048 qmin 38.020 38.044 38.021 qmax 54.734 54.711 54.702 amean 46.188 46.188 46.186 amin 45.793 45.792 45.802 amax 46.618 46.631 46.616 emean 0.159 0.159 0.159 emin 0.144 0.144 0.145 emax 0.175 0.173 0.174 imean 26.535 26.536 26.531 imin 26.160 26.176 26.163 imax 26.848 26.852 26.849 excite_mean 0.474 0.474 0.474 fracstop 1.000 1.000 1.000 cjmean 2.839 2.839 2.839 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 170.0 170.1 169.9 kozaiamp 180.0 180.0 179.9