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: 02GD32 # Created Sat May 25 01:37:07 2013 # Orbit generated from Bernstein formalism # Fitting 24 observations of 25 # Arc: 6.05y # First observation: 2002/04/07 # Last observation: 2008/04/23 Preliminary a, adot, b, bdot, g, gdot: -0.000025 0.016679 0.000001 -0.001910 0.020162 0.000000 # Chi-squared of fit: 53.23 DOF: 42 RMS: 0.26 # Min/Max residuals: -0.83 0.40 # Exact a, adot, b, bdot, g, gdot: 1.287436E-05 1.669649E-02 -2.049431E-06 -1.911662E-03 2.031513E-02 8.797973E-04 # Covariance matrix: 1.7781E-13 -1.2643E-13 -4.4918E-15 1.2405E-14 1.4015E-13 -1.0956E-12 -1.2643E-13 2.5489E-13 1.0014E-14 -2.9058E-14 -6.6809E-14 2.5765E-12 -4.4918E-15 1.0014E-14 9.4167E-14 -2.1380E-14 -3.0582E-15 1.0640E-13 1.2405E-14 -2.9058E-14 -2.1380E-14 1.6102E-14 7.0133E-15 -3.0933E-13 1.4015E-13 -6.6809E-14 -3.0582E-15 7.0133E-15 3.4641E-13 -6.0888E-13 -1.0956E-12 2.5765E-12 1.0640E-13 -3.0933E-13 -6.0888E-13 2.7431E-11 # lat0 lon0 xBary yBary zBary JD0 -0.836625 -150.460483 0.210415 -0.014371 -0.980921 2452371.672563 # Heliocentric elements and errors Epoch: 2452370.5000 = 2002/04/06 Mean Anomaly: 155.48171 +/- 0.122 Argument of Peri: 25.99137 +/- 0.116 Long of Asc Node: 22.16956 +/- 0.001 Inclination: 6.58563 +/- 0.000 Eccentricity: 0.13904239 +/- 0.0001 Semi-Major Axis: 44.45475587 +/- 0.0059 Time of Perihelion: 2405612.8598 +/- 35.5 Perihelion: 38.27366056 +/- 0.0060 Aphelion: 50.63585118 +/- 0.0074 Period (y) 296.4050 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -43.77765584 +/- 0.0012 Ecliptic Y -24.56185393 +/- 0.0007 Ecliptic Z -0.71885750 +/- 0.0000 Ecliptic XDOT 0.00100115 +/- 0.0000 Ecliptic YDOT -0.00201565 +/- 0.0000 Ecliptic ZDOT -0.00025912 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 50.20243595 +/- 0.0011 Geocenter to KBO 49.22440191 +/- 0.0014 # Hcoef: 5.95
The following table shows the complete astrometric record for 02GD32. 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 (02GD32) followed by the observatory code and reference code for the source of the astrometry.
2002 04 07.17182 13 48 40.55 -12 05 32.7 21.4R 02GD32 807 Cf5154 2002 04 07.23610 13 48 40.31 -12 05 31.6 02GD32 807 Cf5154 2002 04 08.20735 13 48 36.51 -12 05 11.5 02GD32 807 Cf5154 2002 04 08.97994 13 48 33.52 -12 04 55.6 02GD32 246 C~05Ct 2002 04 11.30825 13 48 24.30 -12 04 08.3 21.8R 02GD32 695 Cg5851 2002 04 11.39157 13 48 23.95 -12 04 06.4 02GD32 695 Cg5851 2002 04 11.39375 13 48 23.96 -12 04 06.3 21.8R 02GD32 568 Cf5154 2002 04 11.47633 13 48 23.63 -12 04 04.7 02GD32 568 Cf5154 2002 06 03.24289 13 45 12.94 -11 47 05.0 02GD32 675 Cf8972 2002 06 03.25451 13 45 12.92 -11 47 04.7 23.3R 02GD32 675 Cf8972 2002 06 03.31614 13 45 12.76 -11 47 03.7 23.6R 02GD32 675 Cf8972 2002 06 16.15825 13 44 43.16 -11 44 21.5 22.9R 02GD32 695 Cf8972 2002 06 17.15531 13 44 41.26 -11 44 10.9 22.3R 02GD32 695 Cf8972 2002 06 17.21782 13 44 41.14 -11 44 10.2 22.6R 02GD32 695 Cf8972 2003 03 07.49840 13 53 55.58 -12 40 33.4 22.9R 02GD32 662 Ch8264 2003 03 07.53733 13 53 55.47 -12 40 33.0 02GD32 662 Ch8264 2003 04 29.27157 13 50 43.83 -12 24 22.2 22.8R 02GD32 688 Ch8264 2003 04 29.34890 13 50 43.49 -12 24 20.5 02GD32 688 Ch8264 2005 04 10.36854 13 58 59.76 -13 22 54.4 22.3R 02GD32 695 Cn3092 2005 04 11.33662 13 58 55.97 -13 22 35.4 02GD32 695 Cn3092 2005 04 11.42230 13 58 55.62 -13 22 34.1 02GD32 695 Cn3092 2008 04 23.30657 14 08 44.96 -14 35 18.7 23.8R 02GD32 250 S~06AU 2008 04 23.31282 14 08 44.93 -14 35 18.5 02GD32 250 S~06AU 2008 04 23.36768 14 08 44.71 -14 35 17.5 02GD32 250 S~06AU 2008 04 23.37393 14 08 44.69 -14 35 17.3 02GD32 250 S~06AU
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 0.03 0.00 0.12 2 0.0002 -3.68 0.30 -0.22 0.01 3 0.0028 -62.92 0.09 -1.15 0.34 4 0.0050 -109.57 ( 0.54) -1.80 ( 0.89) 5 0.0113 -252.79 0.24 -5.45 0.16 6 0.0116 -258.27 -0.02 -5.49 0.25 7 0.0116 -258.17 0.11 -5.35 0.33 8 0.0118 -263.26 0.19 -5.57 0.25 9 0.1563 -3241.82 -0.26 -47.42 -0.16 10 0.1563 -3242.20 -0.14 -47.25 0.02 11 0.1565 -3244.75 -0.05 -47.15 0.15 12 0.1916 -3708.82 0.40 -50.85 0.07 13 0.1943 -3738.68 -0.08 -50.92 0.21 14 0.1945 -3740.58 -0.11 -50.89 0.26 15 0.9153 5060.41 -0.30 -343.59 -0.31 16 0.9154 5058.77 -0.30 -343.78 -0.41 17 1.0598 2089.57 0.03 -418.81 -0.28 18 1.0600 2084.31 -0.41 -418.97 -0.35 19 3.0094 10118.33 -0.14 -1185.21 -0.47 20 3.0121 10059.72 0.17 -1186.43 -0.43 21 3.0123 10054.47 0.21 -1186.97 -0.83 22 6.0455 19657.19 0.04 -2382.52 0.24 23 6.0456 19656.71 -0.05 -2382.47 0.29 24 6.0457 19653.34 0.00 -2382.60 0.22 25 6.0457 19652.99 0.05 -2382.51 0.31
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.
02GD32 quality flag:3 Type: 9:5EEEE 9:5EEEE 9:5EEEE axisobj 44.256 44.273 44.238 ecceobj 0.143 0.143 0.143 incobj 6.609 6.609 6.609 qmin 38.232 38.296 38.199 qmax 51.026 50.971 51.050 amean 44.554 44.554 44.554 amin 44.486 44.480 44.486 amax 44.636 44.641 44.638 emean 0.136 0.136 0.137 emin 0.127 0.128 0.128 emax 0.143 0.142 0.144 imean 6.200 6.163 6.200 imin 5.410 5.341 5.416 imax 6.980 6.914 6.980 excite_mean 0.174 0.173 0.174 fracstop 1.000 1.000 1.000 cjmean 3.071 3.072 3.071 libcent 0 180.1 176.7 178.9 libamp 0 97.9 109.6 96.8 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 184.3 168.8 185.2 kozaiamp 180.0 179.9 180.0