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: 09KO30 # Created Fri Apr 19 01:13:11 2024 # Orbit generated from Bernstein formalism # Fitting 38 observations of 38 # Arc: 2.02y # First observation: 2009/05/25 # Last observation: 2011/06/03 Preliminary a, adot, b, bdot, g, gdot: -0.000010 0.019127 0.000001 -0.003052 0.021577 0.000000 # Chi-squared of fit: 17.46 DOF: 70 RMS: 0.12 # Min/Max residuals: -0.36 0.35 # Exact a, adot, b, bdot, g, gdot: 1.419164E-05 1.914580E-02 -2.261958E-06 -3.047311E-03 2.178997E-02 -7.127687E-04 # Covariance matrix: 7.2157E-14 -5.8408E-14 -4.8991E-16 3.0973E-15 7.1593E-14 -7.0736E-13 -5.8408E-14 7.6143E-13 6.9828E-15 -1.1438E-13 3.0837E-13 2.7232E-11 -4.8991E-16 6.9828E-15 5.7034E-14 -5.2088E-14 1.4610E-15 3.1673E-13 3.0973E-15 -1.1438E-13 -5.2088E-14 1.6296E-13 -4.8506E-14 -5.0671E-12 7.1593E-14 3.0837E-13 1.4610E-15 -4.8506E-14 5.2948E-13 1.1699E-11 -7.0736E-13 2.7232E-11 3.1673E-13 -5.0671E-12 1.1699E-11 1.2057E-09 # lat0 lon0 xBary yBary zBary JD0 -2.526460 -110.781653 0.090978 -0.044403 -1.005554 2454977.015284 # Heliocentric elements and errors Epoch: 2454970.5000 = 2009/05/19 Mean Anomaly: 218.59943 +/- 1.145 Argument of Peri: 341.36134 +/- 1.141 Long of Asc Node: 53.94916 +/- 0.002 Inclination: 9.37234 +/- 0.001 Eccentricity: 0.06908321 +/- 0.0010 Semi-Major Axis: 44.42688097 +/- 0.0067 Time of Perihelion: 2497453.5643 +/- 343.9 Perihelion: 41.35772922 +/- 0.0439 Aphelion: 47.49603273 +/- 0.0441 Period (y) 296.1263 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -16.70594183 +/- 0.0005 Ecliptic Y -43.77817447 +/- 0.0014 Ecliptic Z -2.02303941 +/- 0.0001 Ecliptic XDOT 0.00229174 +/- 0.0000 Ecliptic YDOT -0.00074998 +/- 0.0000 Ecliptic ZDOT -0.00037867 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.90106332 +/- 0.0013 Geocenter to KBO 45.89268387 +/- 0.0015 # Hcoef: 8.58
The following table shows the complete astrometric record for 09KO30. 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 (09KO30) followed by the observatory code and reference code for the source of the astrometry.
2009 05 25.514518 16 28 25.71 -24 19 45.24 25.0R 09KO30 568 C~07fN 2009 05 25.517041 16 28 25.69 -24 19 45.10 24.4R 09KO30 568 C~07fN 2009 05 25.519597 16 28 25.69 -24 19 45.27 24.6R 09KO30 568 C~07fN 2009 05 25.522212 16 28 25.68 -24 19 45.11 25.3R 09KO30 568 C~07fN 2009 05 25.524866 16 28 25.67 -24 19 45.24 25.4R 09KO30 568 C~07fN 2009 05 25.527423 16 28 25.66 -24 19 45.19 24.8R 09KO30 568 C~07fN 2009 05 25.532619 16 28 25.64 -24 19 45.14 24.8R 09KO30 568 C~07fN 2009 05 26.540061 16 28 20.85 -24 19 36.89 25.6R 09KO30 568 C~07fN 2009 05 26.553535 16 28 20.79 -24 19 36.63 25.1R 09KO30 568 C~07fN 2009 05 26.559042 16 28 20.75 -24 19 36.46 25.8R 09KO30 568 C~07fN 2009 05 26.561672 16 28 20.74 -24 19 37.01 25.2R 09KO30 568 C~07fN 2009 05 26.564366 16 28 20.71 -24 19 36.74 24.8R 09KO30 568 C~07fN 2009 05 27.367988 16 28 16.94 -24 19 30.25 24.1R 09KO30 568 C~07fN 2009 05 27.499944 16 28 16.32 -24 19 29.26 24.8R 09KO30 568 C~07fN 2009 05 27.502480 16 28 16.29 -24 19 29.09 25.0R 09KO30 568 C~07fN 2009 05 27.505047 16 28 16.28 -24 19 28.99 25.2R 09KO30 568 C~07fN 2009 05 27.507654 16 28 16.27 -24 19 29.08 24.6R 09KO30 568 C~07fN 2009 05 27.558348 16 28 16.03 -24 19 28.51 24.6R 09KO30 568 C~07fN 2009 05 27.560926 16 28 16.01 -24 19 28.59 24.9R 09KO30 568 C~07fN 2009 05 27.563465 16 28 16.01 -24 19 28.67 24.7R 09KO30 568 C~07fN 2009 05 27.566071 16 28 15.99 -24 19 28.54 25.1R 09KO30 568 C~07fN 2009 07 17.36181 16 24 44.38 -24 12 12.7 24.9i 09KO30 568 C~08CW 2009 07 17.36550 16 24 44.36 -24 12 12.7 25.0i 09KO30 568 C~08CW 2009 07 17.36714 16 24 44.35 -24 12 12.5 25.6i 09KO30 568 C~08CW 2009 07 17.36970 16 24 44.35 -24 12 12.6 24.9i 09KO30 568 C~08CW 2009 08 22.25207 16 23 48.92 -24 09 23.6 25.3R 09KO30 568 C~08eG 2009 08 22.31259 16 23 48.88 -24 09 23.4 24.6R 09KO30 568 C~08eG 2010 06 11.26830 16 31 46.89 -24 37 50.6 24.8 09KO30 568 C~0Oqh 2010 06 11.26934 16 31 46.87 -24 37 50.4 09KO30 568 C~0Oqh 2010 06 11.27037 16 31 46.86 -24 37 50.7 09KO30 568 C~0Oqh 2010 06 11.27140 16 31 46.85 -24 37 50.6 09KO30 568 C~0Oqh 2010 06 11.27243 16 31 46.87 -24 37 50.5 09KO30 568 C~0Oqh 2010 06 11.41251 16 31 46.20 -24 37 49.3 09KO30 568 C~0Oqh 2010 06 11.41364 16 31 46.19 -24 37 49.4 09KO30 568 C~0Oqh 2010 06 11.41466 16 31 46.19 -24 37 49.2 09KO30 568 C~0Oqh 2010 06 11.41577 16 31 46.19 -24 37 49.3 09KO30 568 C~0Oqh 2010 06 11.41681 16 31 46.18 -24 37 49.3 09KO30 568 C~0Oqh 2011 06 03.51184 16 37 05.52 -24 58 49.2 25.4r 09KO30 568 C~0Wc3
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 -0.06 0.00 0.01
2 0.0000 -0.29 -0.19 0.10 0.11
3 0.0000 -0.27 0.01 -0.07 -0.05
4 0.0000 -0.43 0.02 0.06 0.09
5 0.0000 -0.54 0.08 -0.08 -0.05
6 0.0000 -0.68 0.11 -0.06 -0.02
7 0.0000 -0.96 0.18 -0.05 -0.00
8 0.0028 -66.92 -0.06 -2.04 0.03
9 0.0028 -67.77 -0.02 -1.91 0.19
10 0.0029 -68.34 -0.22 -1.83 0.28
11 0.0029 -68.38 -0.09 -2.40 -0.28
12 0.0029 -68.83 -0.36 -2.19 -0.07
13 0.0051 -120.74 0.01 -3.77 -0.09
14 0.0054 -129.27 0.25 -4.11 -0.14
15 0.0054 -129.70 -0.01 -4.01 -0.03
16 0.0054 -129.85 0.01 -3.93 0.05
17 0.0055 -129.97 0.06 -4.04 -0.06
18 0.0056 -133.30 0.09 -3.98 0.09
19 0.0056 -133.56 0.01 -4.11 -0.03
20 0.0056 -133.55 0.19 -4.18 -0.10
21 0.0056 -133.84 0.07 -4.10 -0.01
22 0.1447 -3060.31 0.04 -31.85 0.00
23 0.1447 -3060.58 -0.07 -31.89 -0.04
24 0.1447 -3060.75 -0.17 -31.71 0.13
25 0.1447 -3060.73 -0.05 -31.81 0.03
26 0.2430 -3836.82 0.35 11.90 -0.03
27 0.2431 -3837.39 -0.16 12.00 -0.02
28 1.0452 2879.61 0.12 -655.62 -0.03
29 1.0452 2879.31 -0.11 -655.47 0.13
30 1.0452 2879.22 -0.14 -655.78 -0.19
31 1.0452 2879.07 -0.22 -655.71 -0.11
32 1.0452 2879.33 0.10 -655.57 0.03
33 1.0456 2870.11 0.04 -655.74 0.05
34 1.0456 2869.99 -0.01 -655.86 -0.06
35 1.0456 2869.96 0.03 -655.66 0.13
36 1.0456 2869.98 0.11 -655.76 0.04
37 1.0456 2869.84 0.05 -655.78 0.02
38 2.0233 7357.18 0.01 -1276.36 -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.
09KO30 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.038 44.057 44.020 ecceobj 0.076 0.078 0.075 incobj 9.408 9.407 9.408 qmin 40.183 40.160 40.260 qmax 48.635 48.717 48.547 amean 44.319 44.339 44.299 amin 43.965 43.989 43.937 amax 44.689 44.716 44.680 emean 0.076 0.077 0.074 emin 0.063 0.064 0.061 emax 0.089 0.090 0.087 imean 8.022 8.018 8.022 imin 7.478 7.472 7.480 imax 8.566 8.566 8.566 excite_mean 0.159 0.160 0.158 fracstop 1.000 1.000 1.000 cjmean 3.075 3.075 3.075 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 172.6 173.1 172.7 kozaiamp 180.0 180.0 180.0