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: 09KL30 # Created Fri Nov 22 02:09:03 2024 # Orbit generated from Bernstein formalism # Fitting 30 observations of 30 # Arc: 1.05y # First observation: 2009/05/25 # Last observation: 2010/06/11 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.013168 -0.000000 0.005602 0.018631 0.000000 # Chi-squared of fit: 12.56 DOF: 54 RMS: 0.11 # Min/Max residuals: -0.23 0.37 # Exact a, adot, b, bdot, g, gdot: 1.108484E-05 1.320137E-02 4.830719E-06 5.607336E-03 1.873205E-02 8.059687E-04 # Covariance matrix: 6.8806E-14 3.3254E-13 -4.2903E-15 2.2739E-13 2.4541E-13 3.8843E-11 3.3254E-13 7.1935E-11 -7.9241E-13 4.3525E-11 3.0723E-11 7.4326E-09 -4.2903E-15 -7.9241E-13 6.5808E-14 -5.4676E-13 -3.4002E-13 -8.2487E-11 2.2739E-13 4.3525E-11 -5.4676E-13 2.7053E-11 1.8612E-11 4.5328E-09 2.4541E-13 3.0723E-11 -3.4002E-13 1.8612E-11 1.3801E-11 3.1784E-09 3.8843E-11 7.4326E-09 -8.2487E-11 4.5328E-09 3.1784E-09 7.7405E-07 # lat0 lon0 xBary yBary zBary JD0 -2.785609 -110.859827 0.089605 -0.048957 -1.005466 2454977.015284 # Heliocentric elements and errors Epoch: 2454970.5000 = 2009/05/19 Mean Anomaly: 161.73773 +/- 14.179 Argument of Peri: 185.60676 +/- 14.300 Long of Asc Node: 255.47294 +/- 0.001 Inclination: 23.11572 +/- 0.003 Eccentricity: 0.19469912 +/- 0.0101 Semi-Major Axis: 45.79280979 +/- 0.2205 Time of Perihelion: 2404119.0665 +/- 4442.7 Perihelion: 36.87698982 +/- 0.4947 Aphelion: 54.70862975 +/- 0.5316 Period (y) 309.8876 +/- 2.24 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -19.42557803 +/- 0.0038 Ecliptic Y -50.73936792 +/- 0.0099 Ecliptic Z -2.59411788 +/- 0.0005 Ecliptic XDOT 0.00175184 +/- 0.0000 Ecliptic YDOT -0.00083010 +/- 0.0001 Ecliptic ZDOT 0.00081277 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 54.39270159 +/- 0.0093 Geocenter to KBO 53.38442809 +/- 0.0106 # Hcoef: 7.48
The following table shows the complete astrometric record for 09KL30. 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 (09KL30) followed by the observatory code and reference code for the source of the astrometry.
2009 05 25.514518 16 27 54.76 -24 34 23.19 24.8R 09KL30 568 C~07fN 2009 05 25.517041 16 27 54.75 -24 34 23.09 24.3R 09KL30 568 C~07fN 2009 05 25.519597 16 27 54.73 -24 34 23.15 24.4R 09KL30 568 C~07fN 2009 05 25.522212 16 27 54.71 -24 34 23.09 24.2R 09KL30 568 C~07fN 2009 05 25.524866 16 27 54.71 -24 34 22.96 25.1R 09KL30 568 C~07fN 2009 05 25.527423 16 27 54.71 -24 34 22.99 24.6R 09KL30 568 C~07fN 2009 05 25.530014 16 27 54.71 -24 34 22.99 24.2R 09KL30 568 C~07fN 2009 05 25.532619 16 27 54.69 -24 34 22.79 24.2R 09KL30 568 C~07fN 2009 05 26.540061 16 27 50.49 -24 34 10.96 24.3R 09KL30 568 C~07fN 2009 05 26.545535 16 27 50.46 -24 34 11.03 24.3R 09KL30 568 C~07fN 2009 05 26.553535 16 27 50.44 -24 34 10.60 24.4R 09KL30 568 C~07fN 2009 05 26.556286 16 27 50.41 -24 34 10.92 24.6R 09KL30 568 C~07fN 2009 05 26.559042 16 27 50.40 -24 34 10.78 25.2R 09KL30 568 C~07fN 2009 05 26.561672 16 27 50.41 -24 34 10.69 23.9R 09KL30 568 C~07fN 2009 05 27.367988 16 27 47.06 -24 34 01.01 24.4R 09KL30 568 C~07fN 2009 05 27.499944 16 27 46.50 -24 33 59.56 24.4R 09KL30 568 C~07fN 2009 05 27.502480 16 27 46.48 -24 33 59.46 24.6R 09KL30 568 C~07fN 2009 05 27.505047 16 27 46.47 -24 33 59.48 24.3R 09KL30 568 C~07fN 2009 05 27.507654 16 27 46.46 -24 33 59.32 24.3R 09KL30 568 C~07fN 2009 05 27.558348 16 27 46.25 -24 33 58.87 24.3R 09KL30 568 C~07fN 2009 05 27.560926 16 27 46.23 -24 33 58.88 24.3R 09KL30 568 C~07fN 2009 05 27.563465 16 27 46.24 -24 33 58.92 24.2R 09KL30 568 C~07fN 2009 05 27.566071 16 27 46.21 -24 33 58.75 24.4R 09KL30 568 C~07fN 2009 07 17.36181 16 24 40.05 -24 23 31.2 24.1i 09KL30 568 C~08CW 2009 07 17.36550 16 24 40.08 -24 23 31.2 25.2i 09KL30 568 C~08CW 2009 07 17.36714 16 24 40.04 -24 23 31.1 25.3i 09KL30 568 C~08CW 2009 07 17.36970 16 24 40.04 -24 23 30.9 24.9i 09KL30 568 C~08CW 2010 06 11.27140 16 30 16.40 -24 19 00.0 24.8 09KL30 568 C~0Oqh 2010 06 11.41466 16 30 15.83 -24 18 58.2 09KL30 568 C~0Oqh 2010 06 11.41577 16 30 15.82 -24 18 58.0 09KL30 568 C~0Oqh
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 0.01 0.00 -0.02
2 0.0000 -0.15 0.01 0.08 0.05
3 0.0000 -0.41 -0.10 -0.02 -0.06
4 0.0000 -0.69 -0.23 -0.01 -0.05
5 0.0000 -0.71 -0.09 0.12 0.07
6 0.0000 -0.70 0.07 0.09 0.03
7 0.0000 -0.70 0.22 0.09 0.03
8 0.0000 -1.01 0.07 0.25 0.17
9 0.0028 -59.44 -0.01 3.00 0.02
10 0.0028 -59.84 -0.08 2.87 -0.13
11 0.0028 -60.17 0.06 3.25 0.23
12 0.0029 -60.53 -0.14 2.87 -0.16
13 0.0029 -60.68 -0.13 2.99 -0.05
14 0.0029 -60.56 0.14 3.10 0.05
15 0.0051 -107.22 0.08 5.54 0.10
16 0.0054 -114.99 0.09 5.78 -0.03
17 0.0054 -115.27 -0.05 5.83 0.02
18 0.0054 -115.40 -0.03 5.79 -0.03
19 0.0055 -115.56 -0.04 5.93 0.10
20 0.0056 -118.46 0.05 5.93 -0.06
21 0.0056 -118.73 -0.07 5.87 -0.12
22 0.0056 -118.59 0.22 5.86 -0.14
23 0.0056 -119.02 -0.06 5.96 -0.05
24 0.1447 -2727.98 -0.18 222.05 -0.08
25 0.1447 -2727.57 0.37 222.11 -0.03
26 0.1447 -2728.13 -0.13 222.13 -0.03
27 0.1447 -2728.16 -0.06 222.32 0.15
28 1.0452 1769.41 -0.17 1209.43 -0.13
29 1.0456 1761.43 0.14 1210.03 -0.02
30 1.0456 1761.27 0.03 1210.21 0.15
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.
09KL30 quality flag:2 Type: SCATEXTD SCATNEAR SCATEXTD axisobj 45.469 47.171 45.346 ecceobj 0.202 0.270 0.199 incobj 23.234 23.235 23.233 qmin 34.906 33.171 35.362 qmax 57.148 62.323 56.254 amean 45.786 47.356 45.597 amin 45.373 46.884 45.207 amax 46.266 48.040 46.056 emean 0.209 0.273 0.203 emin 0.192 0.247 0.187 emax 0.236 0.299 0.222 imean 24.415 24.362 24.422 imin 23.802 23.533 23.912 imax 24.840 25.286 24.898 excite_mean 0.463 0.495 0.461 fracstop 1.000 1.000 1.000 cjmean 2.853 2.833 2.853 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 190.3 183.6 181.4 kozaiamp 180.0 180.0 180.0