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: 00WT169 # Created Thu May 24 01:37:05 2012 # Orbit generated from Bernstein formalism # Fitting 36 observations of 36 # Arc: 9.18y # First observation: 2000/11/23 # Last observation: 2010/01/27 Preliminary a, adot, b, bdot, g, gdot: -0.000082 0.021333 -0.000002 0.000481 0.022594 0.000000 # Chi-squared of fit: 189.09 DOF: 66 RMS: 0.41 # Min/Max residuals: -1.13 0.74 # Exact a, adot, b, bdot, g, gdot: 1.660686E-05 2.136891E-02 3.607041E-06 4.823787E-04 2.277635E-02 2.931998E-04 # Covariance matrix: 1.2572E-13 -4.7752E-14 2.0787E-16 -9.4129E-16 4.2667E-14 -2.0250E-13 -4.7752E-14 1.0383E-13 -1.5805E-15 2.5368E-15 3.7431E-14 5.5127E-13 2.0787E-16 -1.5805E-15 8.2495E-14 -1.0543E-14 -1.2996E-15 -8.6180E-15 -9.4129E-16 2.5368E-15 -1.0543E-14 2.7282E-15 9.2467E-16 1.3823E-14 4.2667E-14 3.7431E-14 -1.2996E-15 9.2467E-16 1.2173E-13 2.0485E-13 -2.0250E-13 5.5127E-13 -8.6180E-15 1.3823E-14 2.0485E-13 3.0038E-12 # lat0 lon0 xBary yBary zBary JD0 -1.199993 68.368863 0.116004 -0.020552 -0.973776 2451871.955873 # Heliocentric elements and errors Epoch: 2451870.5000 = 2000/11/22 Mean Anomaly: 52.78320 +/- 0.191 Argument of Peri: 263.57802 +/- 0.200 Long of Asc Node: 110.51628 +/- 0.003 Inclination: 1.74355 +/- 0.000 Eccentricity: 0.01433724 +/- 0.0001 Semi-Major Axis: 45.27193529 +/- 0.0027 Time of Perihelion: 2435557.4469 +/- 58.9 Perihelion: 44.62286064 +/- 0.0044 Aphelion: 45.92100993 +/- 0.0045 Period (y) 304.6154 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 16.65235422 +/- 0.0003 Ecliptic Y 41.67194378 +/- 0.0006 Ecliptic Z -0.91932436 +/- 0.0000 Ecliptic XDOT -0.00238222 +/- 0.0000 Ecliptic YDOT 0.00098521 +/- 0.0000 Ecliptic ZDOT 0.00005741 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.88537576 +/- 0.0006 Geocenter to KBO 43.90518981 +/- 0.0007 # Hcoef: 6.15
The following table shows the complete astrometric record for 00WT169. 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 (00WT169) followed by the observatory code and reference code for the source of the astrometry.
2000 11 23.45513 04 27 18.50 +20 30 57.6 00WT169 568 Cc3044 2000 11 23.47774 04 27 18.42 +20 30 57.5 00WT169 568 Cc3044 2000 11 23.50024 04 27 18.30 +20 30 57.2 00WT169 568 Cc3044 2000 11 29.48449 04 26 48.99 +20 29 53.2 21.9R 00WT169 568 Cc3044 2000 11 29.50227 04 26 48.88 +20 29 52.8 22.0R 00WT169 568 Cc3044 2000 12 17.46296 04 25 22.31 +20 26 47.5 22.0R 00WT169 568 Cc4033 2000 12 17.47846 04 25 22.24 +20 26 47.3 22.1R 00WT169 568 Cc4033 2001 01 25.13017 04 23 02.56 +20 22 17.3 22.7R 00WT169 695 Cc6724 2001 01 25.22623 04 23 02.33 +20 22 16.9 00WT169 695 Cc6724 2001 02 16.89482 04 22 35.05 +20 21 54.9 00WT169 950 Cc6724 2001 02 18.97751 04 22 34.96 +20 21 58.6 00WT169 950 Cc6724 2001 02 20.26288 04 22 35.22 +20 22 00.5 22.6R 00WT169 568 Cc6724 2001 02 21.23176 04 22 35.44 +20 22 02.9 22.7R 00WT169 568 Cc6724 2002 01 09.35957 04 28 56.91 +20 36 52.5 22.3R 00WT169 568 Ce6590 2002 01 09.39748 04 28 56.76 +20 36 51.8 22.2R 00WT169 568 Ce6590 2002 01 14.20980 04 28 40.38 +20 36 22.6 22.5R 00WT169 568 Ce6590 2002 01 14.22422 04 28 40.33 +20 36 22.5 22.4R 00WT169 568 Ce6590 2002 01 14.23044 04 28 40.31 +20 36 22.5 22.3R 00WT169 568 Ce6590 2002 11 06.52312 04 38 59.94 +20 58 51.4 22.0R 00WT169 568 Cl8320 2002 11 06.56643 04 38 59.76 +20 58 51.1 00WT169 568 Cl8320 2005 03 09.14215 04 43 01.31 +21 12 01.6 00WT169 G96 Cn1549 2005 03 11.14357 04 43 04.33 +21 12 11.2 00WT169 G96 Cn1549 2008 09 24.39129 05 11 46.77 +22 01 13.7 23.6R 00WT169 250 S~06AO 2008 09 24.39754 05 11 46.77 +22 01 13.6 00WT169 250 S~06AO 2008 09 24.40449 05 11 46.76 +22 01 13.6 00WT169 250 S~06AO 2008 09 24.41074 05 11 46.76 +22 01 13.6 00WT169 250 S~06AO 2008 12 01.45455 05 08 10.56 +21 56 16.7 22.0R 00WT169 688 C~02MI 2008 12 01.49965 05 08 10.33 +21 56 16.1 00WT169 688 C~02MI 2010 01 27.46752 05 09 12.45 +22 00 08.1 00WT169 250 S~0M3F 2010 01 27.46991 05 09 12.44 +22 00 08.0 00WT169 250 S~0M3F 2010 01 27.47272 05 09 12.43 +22 00 08.0 00WT169 250 S~0M3F 2010 01 27.47510 05 09 12.43 +22 00 08.1 00WT169 250 S~0M3F 2010 01 27.48019 05 09 12.35 +22 00 08.0 00WT169 250 S~0M3F 2010 01 27.48574 05 09 12.33 +22 00 08.0 00WT169 250 S~0M3F 2010 01 27.49190 05 09 12.30 +22 00 07.9 00WT169 250 S~0M3F 2010 01 27.49745 05 09 12.28 +22 00 07.9 00WT169 250 S~0M3F
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 -0.37 0.00 -0.67 2 0.0001 -1.13 0.10 0.08 -0.60 3 0.0001 -2.84 -0.03 0.04 -0.64 4 0.0165 -419.57 0.05 1.46 -0.26 5 0.0166 -421.16 -0.27 1.31 -0.42 6 0.0657 -1651.72 0.15 11.04 -0.27 7 0.0658 -1652.72 0.18 11.00 -0.32 8 0.1716 -3634.58 -0.42 61.15 0.58 9 0.1719 -3637.84 -0.54 61.29 0.54 10 0.2339 -4020.03 -0.32 102.24 0.74 11 0.2396 -4020.67 -0.55 106.10 0.69 12 0.2431 -4016.75 0.50 107.38 -0.50 13 0.2458 -4013.31 0.29 109.24 -0.47 14 1.1277 1420.45 0.57 135.93 0.58 15 1.1278 1418.26 0.34 135.56 0.16 16 1.1410 1186.53 0.32 142.19 0.11 17 1.1411 1185.82 0.28 142.20 0.10 18 1.1411 1185.54 0.29 142.25 0.13 19 1.9523 9986.14 -0.02 202.68 0.02 20 1.9524 9983.60 0.12 202.74 0.09 21 4.2894 13451.33 -1.13 528.41 0.04 22 4.2948 13494.65 0.24 532.35 0.57 23 7.8356 38095.84 -0.09 831.97 0.38 24 7.8356 38095.84 -0.05 831.87 0.29 25 7.8356 38095.69 -0.15 831.88 0.31 26 7.8356 38095.69 -0.10 831.88 0.31 27 8.0219 34979.00 0.25 803.66 0.61 28 8.0220 34975.66 0.15 803.35 0.30 29 9.1773 35883.48 0.54 957.87 -0.27 30 9.1773 35883.32 0.49 957.78 -0.36 31 9.1773 35883.18 0.47 957.79 -0.35 32 9.1773 35883.19 0.58 957.89 -0.25 33 9.1773 35882.04 -0.35 957.89 -0.26 34 9.1774 35881.75 -0.40 957.92 -0.24 35 9.1774 35881.32 -0.57 957.85 -0.32 36 9.1774 35881.03 -0.62 957.88 -0.30
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.
00WT169 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.231 45.239 45.223 ecceobj 0.015 0.015 0.015 incobj 1.744 1.744 1.744 qmin 44.066 44.073 44.065 qmax 45.826 45.837 45.814 amean 44.939 44.946 44.936 amin 44.932 44.940 44.925 amax 44.948 44.955 44.940 emean 0.013 0.014 0.013 emin 0.005 0.005 0.005 emax 0.020 0.020 0.019 imean 0.652 0.651 0.653 imin 0.091 0.091 0.091 imax 1.030 1.028 1.031 excite_mean 0.018 0.018 0.018 fracstop 1.000 1.000 1.000 cjmean 3.113 3.113 3.113 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 196.5 196.0 195.9 kozaiamp 179.8 179.8 179.9