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: 09KJ30 # Created Sat Apr 20 01:13:10 2024 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 2.05d # First observation: 2009/05/25 # Last observation: 2009/05/27 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # Chi-squared of fit: 4.22 DOF: 30 RMS: 0.09 # Min/Max residuals: -0.13 0.17 # Exact a, adot, b, bdot, g, gdot: 1.294375E-05 2.256573E-02 9.107580E-06 1.536637E-02 2.663880E-02 0.000000E+00 # Covariance matrix: 6.4849E-11 1.0871E-07 3.0161E-13 3.6686E-10 1.7582E-08 0.0000E+00 1.0871E-07 1.8309E-04 5.0776E-10 6.1751E-07 2.9595E-05 0.0000E+00 3.0161E-13 5.0776E-10 2.3947E-13 -4.9250E-11 8.2080E-11 0.0000E+00 3.6686E-10 6.1751E-07 -4.9250E-11 1.9209E-08 9.9825E-08 0.0000E+00 1.7582E-08 2.9595E-05 8.2080E-11 9.9825E-08 4.7842E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.4875E-04 # lat0 lon0 xBary yBary zBary JD0 -2.798794 -111.227495 0.083143 -0.049215 -1.006008 2454977.015284 # Heliocentric elements and errors Epoch: 2454970.5000 = 2009/05/19 Mean Anomaly: 353.96920 +/- 89.739 Argument of Peri: 1.50688 +/- 156.631 Long of Asc Node: 252.65626 +/- 2.360 Inclination: 34.30158 +/- 15.824 Eccentricity: 0.02747598 +/- 0.5928 Semi-Major Axis: 39.63060851 +/- 20.9803 Time of Perihelion: 2456497.0718 +/- 296092.4 Perihelion: 38.54171861 +/- 31.1155 Aphelion: 40.71949842 +/- 31.8834 Period (y) 249.4907 +/- 198.12 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -14.01454625 +/- 1.1149 Ecliptic Y -35.86342243 +/- 2.8697 Ecliptic Z -1.83260326 +/- 0.1505 Ecliptic XDOT 0.00213885 +/- 0.0013 Ecliptic YDOT -0.00090749 +/- 0.0016 Ecliptic ZDOT 0.00157732 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 38.54803510 +/- 2.7004 Geocenter to KBO 37.53922239 +/- 3.0823 # Hcoef: 8.25
The following table shows the complete astrometric record for 09KJ30. 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 (09KJ30) followed by the observatory code and reference code for the source of the astrometry.
2009 05 25.514518 16 26 18.52 -24 31 42.47 23.9R 09KJ30 568 C~07fN 2009 05 25.517041 16 26 18.49 -24 31 42.41 23.8R 09KJ30 568 C~07fN 2009 05 25.519597 16 26 18.48 -24 31 42.30 23.8R 09KJ30 568 C~07fN 2009 05 25.522212 16 26 18.47 -24 31 42.35 24.1R 09KJ30 568 C~07fN 2009 05 26.540061 16 26 12.65 -24 31 20.91 23.9R 09KJ30 568 C~07fN 2009 05 26.545535 16 26 12.63 -24 31 20.94 23.8R 09KJ30 568 C~07fN 2009 05 26.556286 16 26 12.55 -24 31 20.61 23.7R 09KJ30 568 C~07fN 2009 05 26.561672 16 26 12.54 -24 31 20.58 23.9R 09KJ30 568 C~07fN 2009 05 27.367988 16 26 07.93 -24 31 03.45 24.1R 09KJ30 568 C~07fN 2009 05 27.499944 16 26 07.16 -24 31 00.88 23.2R 09KJ30 568 C~07fN 2009 05 27.502480 16 26 07.15 -24 31 00.75 23.1R 09KJ30 568 C~07fN 2009 05 27.505047 16 26 07.15 -24 31 00.57 23.9R 09KJ30 568 C~07fN 2009 05 27.507654 16 26 07.13 -24 31 00.81 23.2R 09KJ30 568 C~07fN 2009 05 27.558348 16 26 06.83 -24 30 59.66 23.7R 09KJ30 568 C~07fN 2009 05 27.560926 16 26 06.82 -24 30 59.51 23.7R 09KJ30 568 C~07fN 2009 05 27.563465 16 26 06.79 -24 30 59.48 23.4R 09KJ30 568 C~07fN 2009 05 27.566071 16 26 06.78 -24 30 59.42 23.6R 09KJ30 568 C~07fN
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 0.09 0.00 0.00
2 0.0000 -0.41 -0.12 -0.01 -0.02
3 0.0000 -0.57 -0.06 0.08 0.04
4 0.0000 -0.69 0.03 0.01 -0.05
5 0.0028 -82.51 -0.05 8.60 0.08
6 0.0028 -82.77 0.13 8.53 -0.04
7 0.0029 -83.90 -0.13 8.68 0.02
8 0.0029 -84.04 0.17 8.69 -0.02
9 0.0051 -148.88 -0.10 15.62 0.14
10 0.0054 -159.66 -0.10 16.50 -0.07
11 0.0054 -159.82 -0.05 16.60 0.01
12 0.0054 -159.85 0.13 16.78 0.17
13 0.0055 -160.08 0.12 16.50 -0.13
14 0.0056 -164.30 0.03 16.99 -0.08
15 0.0056 -164.46 0.08 17.11 0.02
16 0.0056 -164.87 -0.12 17.08 -0.04
17 0.0056 -165.01 -0.06 17.11 -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.
09KJ30 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