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: 11FY9 # Created Thu May 24 01:37:54 2012 # Orbit generated from Bernstein formalism # Fitting 20 observations of 20 # Arc: 1.06y # First observation: 2011/03/23 # Last observation: 2012/04/13 Preliminary a, adot, b, bdot, g, gdot: -0.000268 0.117922 -0.000044 0.071924 0.064800 0.000000 # Chi-squared of fit: 96.11 DOF: 34 RMS: 0.39 # Min/Max residuals: -0.89 0.81 # Exact a, adot, b, bdot, g, gdot: 2.406593E-05 1.204899E-01 1.809855E-05 7.344202E-02 6.804652E-02 1.986916E-02 # Covariance matrix: 1.4763E-13 3.7538E-13 -1.3406E-14 3.0894E-13 3.6173E-13 4.0205E-12 3.7538E-13 4.1792E-11 -8.2376E-13 2.8378E-11 1.2822E-11 3.6731E-10 -1.3406E-14 -8.2376E-13 1.2914E-13 -6.7489E-13 -2.8103E-13 -7.2610E-12 3.0894E-13 2.8378E-11 -6.7489E-13 1.9800E-11 8.5927E-12 2.5178E-10 3.6173E-13 1.2822E-11 -2.8103E-13 8.5927E-12 5.4641E-12 1.1138E-10 4.0205E-12 3.6731E-10 -7.2610E-12 2.5178E-10 1.1138E-10 3.2587E-09 # lat0 lon0 xBary yBary zBary JD0 -23.955823 -177.959489 0.003143 -0.406244 -0.914365 2455643.526276 # Heliocentric elements and errors Epoch: 2455640.5000 = 2011/03/20 Mean Anomaly: 2.13199 +/- 0.005 Argument of Peri: 300.65684 +/- 0.049 Long of Asc Node: 214.27826 +/- 0.000 Inclination: 37.78078 +/- 0.000 Eccentricity: 0.73889138 +/- 0.0003 Semi-Major Axis: 58.14296353 +/- 0.0538 Time of Perihelion: 2454681.4816 +/- 2.0 Perihelion: 15.18162906 +/- 0.0215 Aphelion: 101.10429799 +/- 0.0950 Period (y) 443.3574 +/- 0.62 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -14.41743849 +/- 0.0005 Ecliptic Y -0.51124691 +/- 0.0000 Ecliptic Z -5.96676215 +/- 0.0002 Ecliptic XDOT -0.00175807 +/- 0.0000 Ecliptic YDOT -0.00490757 +/- 0.0000 Ecliptic ZDOT 0.00237582 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 15.61173138 +/- 0.0004 Geocenter to KBO 14.69582810 +/- 0.0005 # Hcoef: 9.07
The following table shows the complete astrometric record for 11FY9. 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 (11FY9) followed by the observatory code and reference code for the source of the astrometry.
2011 03 23.02551 11 27 11.250 -22 40 22.62 21.1R 11FY9 809 C~0U6m 2011 03 23.11008 11 27 10.382 -22 40 12.90 20.7R 11FY9 809 C~0U6m 2011 03 27.01683 11 26 31.311 -22 32 47.29 21.1R 11FY9 809 C~0U6m 2011 03 27.10079 11 26 30.480 -22 32 37.64 21.1R 11FY9 809 C~0U6n 2011 03 27.19166 11 26 29.542 -22 32 26.95 21.0R 11FY9 809 C~0U6n 2011 03 28.03368 11 26 21.295 -22 30 48.31 21.1R 11FY9 809 C~0U6n 2011 03 28.15255 11 26 20.123 -22 30 34.34 21.0R 11FY9 809 C~0U6n 2011 03 28.26847 11 26 18.962 -22 30 20.44 21.0R 11FY9 809 C~0U6n 2011 03 31.23056 11 25 50.350 -22 24 24.17 11FY9 807 C~0UWM 2011 03 31.28221 11 25 49.846 -22 24 17.74 11FY9 807 C~0UWM 2011 04 02.01748 11 25 33.633 -22 20 43.22 20.7R 11FY9 809 C~0UWM 2011 04 02.10108 11 25 32.842 -22 20 32.96 20.8R 11FY9 809 C~0UWM 2011 04 02.18433 11 25 32.088 -22 20 22.99 20.8R 11FY9 809 C~0UWM 2011 06 26.04435 11 24 02.941 -19 29 43.08 20.0R 11FY9 807 C~0fFS 2012 03 25.17185 12 00 31.13 -21 34 02.0 11FY9 807 C~0g7h 2012 03 25.24124 12 00 30.41 -21 33 54.6 11FY9 807 C~0g7h 2012 04 13.34980 11 57 27.316 -20 57 01.13 20.7w 11FY9 F51 C~0g7h 2012 04 13.36304 11 57 27.181 -20 56 59.37 20.7w 11FY9 F51 C~0g7h 2012 04 13.37627 11 57 27.073 -20 56 57.83 20.7w 11FY9 F51 C~0g7h 2012 04 13.38951 11 57 26.950 -20 56 56.15 20.7w 11FY9 F51 C~0g7h
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 0.81 0.00 -0.21 2 0.0002 -15.03 0.68 3.60 0.18 3 0.0109 -695.35 0.11 172.26 0.65 4 0.0112 -709.90 0.31 175.99 0.64 5 0.0114 -726.24 0.01 180.02 0.58 6 0.0137 -871.91 -0.01 219.62 0.10 7 0.0140 -892.59 0.19 225.20 0.17 8 0.0144 -913.10 0.10 230.79 0.27 9 0.0225 -1424.83 -0.81 380.48 -0.73 10 0.0226 -1433.91 -0.89 383.25 -0.70 11 0.0274 -1729.54 -0.51 479.22 -0.19 12 0.0276 -1743.87 -0.42 483.71 -0.26 13 0.0278 -1757.62 0.24 488.17 -0.39 14 0.2601 -7337.54 0.21 9179.61 -0.20 15 1.0079 23930.25 -0.03 15002.91 -0.04 16 1.0081 23917.96 -0.08 15005.92 0.08 17 1.0604 20663.11 0.14 16068.17 0.02 18 1.0605 20660.66 -0.11 16069.06 0.03 19 1.0605 20658.65 0.07 16069.90 -0.01 20 1.0605 20656.39 0.01 16070.78 -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.
11FY9 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 58.318 58.316 58.319 ecceobj 0.739 0.739 0.739 incobj 37.627 37.627 37.627 qmin 12.162 14.783 13.276 qmax 110.543 103.326 108.826 amean 56.298 57.801 55.289 amin 52.137 57.098 50.937 amax 61.483 59.224 61.606 emean 0.766 0.738 0.747 emin 0.733 0.733 0.717 emax 0.798 0.745 0.771 imean 33.383 38.024 35.294 imin 30.861 37.779 33.703 imax 38.239 38.239 38.240 excite_mean 0.943 0.962 0.944 fracstop 0.192 0.005 0.200 cjmean 1.999 2.006 2.012 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 220.6 301.6 179.7 kozaiamp 180.0 1.3 179.9