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: 99CD158
# Created Mon May 20 01:36:58 2013
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 9.06y
# First observation: 1999/02/10
# Last observation: 2008/03/03
Preliminary a, adot, b, bdot, g, gdot:
-0.000216 0.016431 -0.000135 0.007833 0.020590 0.000000
# Chi-squared of fit: 77.16 DOF: 50 RMS: 0.29
# Min/Max residuals: -0.55 0.73
# Exact a, adot, b, bdot, g, gdot:
1.338448E-05 1.609229E-02 7.928649E-06 7.673824E-03 2.103307E-02 -1.807841E-03
# Covariance matrix:
1.2668E-13 -6.0781E-14 1.3266E-14 -2.1793E-14 -4.7532E-15 -3.1603E-13
-6.0781E-14 8.9737E-14 -2.4135E-14 3.9621E-14 -2.1624E-15 5.7483E-13
1.3266E-14 -2.4135E-14 1.0749E-13 -2.4952E-14 -5.9358E-16 -1.6189E-13
-2.1793E-14 3.9621E-14 -2.4952E-14 2.2225E-14 1.3040E-15 2.6585E-13
-4.7532E-15 -2.1624E-15 -5.9358E-16 1.3040E-15 1.3191E-13 1.5774E-14
-3.1603E-13 5.7483E-13 -1.6189E-13 2.6585E-13 1.5774E-14 3.8562E-12
# lat0 lon0 xBary yBary zBary JD0
0.023291 118.608005 -0.384618 0.000154 -0.915704 2451219.781253
# Heliocentric elements and errors
Epoch: 2451210.5000 = 1999/02/01
Mean Anomaly: 223.90249 +/- 0.031
Argument of Peri: 146.15005 +/- 0.028
Long of Asc Node: 119.00607 +/- 0.000
Inclination: 25.50664 +/- 0.000
Eccentricity: 0.14320223 +/- 0.0001
Semi-Major Axis: 43.59201275 +/- 0.0026
Time of Perihelion: 2490953.1184 +/- 8.4
Perihelion: 37.34953926 +/- 0.0044
Aphelion: 49.83448624 +/- 0.0048
Period (y) 287.8184 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -23.53321975 +/- 0.0004
Ecliptic Y 42.35929891 +/- 0.0007
Ecliptic Z 0.01970060 +/- 0.0000
Ecliptic XDOT -0.00172779 +/- 0.0000
Ecliptic YDOT -0.00120092 +/- 0.0000
Ecliptic ZDOT 0.00099880 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 48.45743517 +/- 0.0007
Geocenter to KBO 47.54416715 +/- 0.0008
# Hcoef: 5.07
The following table shows the complete astrometric record for 99CD158. 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 (99CD158) followed by the observatory code and reference code for the source of the astrometry.
1999 02 10.28051 08 02 56.28 +20 27 43.6 21.1R 99CD158 568 Cb6454 1999 02 10.33373 08 02 56.05 +20 27 44.4 21.1R 99CD158 568 Cb6454 1999 02 10.37846 08 02 55.86 +20 27 45.2 21.1R 99CD158 568 Cb6454 1999 02 17.23406 08 02 28.08 +20 29 36.4 21.1R 99CD158 568 Cb6454 1999 02 17.27993 08 02 27.88 +20 29 37.1 21.1R 99CD158 568 Cb6454 1999 03 08.23784 08 01 23.78 +20 34 06.1 21.1R 99CD158 568 Cb6454 1999 03 08.25227 08 01 23.74 +20 34 06.6 21.1R 99CD158 568 Cb6454 1999 04 08.24061 08 00 34.49 +20 38 40.8 21.9R 99CD158 568 Cb6454 1999 04 09.23382 08 00 34.24 +20 38 45.6 21.9R 99CD158 568 Cb6454 2000 01 10.50965 08 09 30.85 +20 32 49.2 21.5R 99CD158 568 Cb6454 2000 01 10.54212 08 09 30.69 +20 32 50.0 22.3R 99CD158 568 Cb6454 2000 04 04.28332 08 04 47.16 +20 52 51.2 22.5R 99CD158 568 Cb6454 2000 04 04.36278 08 04 47.09 +20 52 51.7 22.6R 99CD158 568 Cb6454 2000 04 05.31420 08 04 46.52 +20 52 56.9 22.6R 99CD158 568 Cb6454 2000 11 28.47689 08 16 20.58 +20 35 00.4 21.5R 99CD158 695 Cc3589 2000 11 29.45039 08 16 18.30 +20 35 13.0 21.4R 99CD158 695 Cc3589 2000 11 29.54823 08 16 18.05 +20 35 14.2 21.6R 99CD158 695 Cc3589 2003 12 04.48741 08 29 05.77 +21 14 27.9 21.2R 99CD158 568 Ck0653 2003 12 04.55734 08 29 05.59 +21 14 29.0 99CD158 568 Ck0653 2007 02 15.18362 08 37 27.32 +22 14 25.6 21.9R 99CD158 688 Cu2274 2007 02 15.28111 08 37 26.90 +22 14 27.6 99CD158 688 Cu2274 2007 02 16.28816 08 37 22.57 +22 14 46.2 99CD158 695 Cu2274 2007 02 16.37103 08 37 22.21 +22 14 47.8 99CD158 695 Cu2274 2007 02 16.47518 08 37 21.75 +22 14 49.7 99CD158 695 Cu2274 2007 11 08.40968 08 47 11.95 +21 54 21.2 99CD158 695 Cy3962 2007 11 09.40401 08 47 12.00 +21 54 30.7 99CD158 695 Cy3962 2008 03 03.18597 08 40 48.05 +22 30 42.5 99CD158 695 Cy7583 2008 03 03.23141 08 40 47.89 +22 30 43.1 99CD158 695 Cy7583
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 -0.27 0.00 -0.45 2 0.0001 -3.33 -0.29 0.13 -0.55 3 0.0003 -6.10 -0.29 0.37 -0.49 4 0.0190 -410.92 -0.01 30.04 -0.40 5 0.0192 -413.81 -0.25 30.15 -0.49 6 0.0711 -1350.01 0.45 111.93 0.04 7 0.0711 -1350.66 0.40 112.31 0.35 8 0.1559 -2083.12 0.19 242.41 0.07 9 0.1587 -2087.52 0.26 246.41 -0.06 10 0.9151 5359.74 0.17 1453.44 0.16 11 0.9152 5357.37 -0.03 1453.74 0.33 12 1.1472 1214.65 0.00 1794.25 0.71 13 1.1474 1213.59 -0.19 1794.54 0.73 14 1.1500 1204.70 -0.05 1797.98 0.70 15 1.7993 10956.37 -0.05 2839.66 -0.21 16 1.8020 10922.25 0.11 2844.79 -0.12 17 1.8022 10918.55 0.00 2845.18 -0.21 18 4.8137 20899.89 -0.13 7669.18 0.08 19 4.8139 20897.16 -0.15 7669.63 0.08 20 8.0134 26869.57 -0.30 12963.96 -0.06 21 8.0137 26863.31 -0.21 12964.38 0.14 22 8.0164 26799.26 0.15 12966.70 0.12 23 8.0167 26793.92 0.16 12966.94 0.21 24 8.0170 26787.13 0.04 12967.12 0.19 25 8.7423 35233.84 0.21 14003.75 -0.52 26 8.7450 35231.93 0.19 14013.25 -0.48 27 9.0593 29363.30 -0.13 14663.95 0.08 28 9.0594 29360.96 0.03 14663.94 0.04
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.
99CD158 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.704 43.711 43.696 ecceobj 0.141 0.141 0.141 incobj 25.465 25.465 25.465 qmin 36.034 35.777 36.156 qmax 51.676 51.924 51.547 amean 43.730 43.725 43.725 amin 43.576 43.571 43.579 amax 43.878 43.885 43.878 emean 0.151 0.154 0.147 emin 0.128 0.133 0.120 emax 0.178 0.184 0.175 imean 23.782 23.716 23.823 imin 23.051 23.041 23.117 imax 24.212 24.176 24.391 excite_mean 0.431 0.431 0.430 fracstop 1.000 1.000 1.000 cjmean 2.869 2.869 2.870 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 182.6 183.5 179.9 kozaiamp 180.0 180.0 179.9