The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory.
# Object: 99RW215
# Created Fri May 2 02:36:29 2008
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 4.21y
# First observation: 1999/09/07
# Last observation: 2003/11/22
Preliminary a, adot, b, bdot, g, gdot:
0.000040 0.035077 0.000027 -0.003520 0.031172 0.000000
# Chi-squared of fit: 62.60 DOF: 24 RMS: 0.36
# Min/Max residuals: -0.95 0.77
# Exact a, adot, b, bdot, g, gdot:
1.664906E-05 3.445347E-02 -1.213784E-06 -3.465542E-03 3.077621E-02 -4.096361E-03
# Covariance matrix:
2.1686E-13 1.8140E-13 3.4579E-15 -1.7292E-14 3.0594E-13 1.3110E-12
1.8140E-13 1.9755E-12 3.1038E-14 -2.1259E-13 1.3790E-12 1.4705E-11
3.4579E-15 3.1038E-14 1.2757E-13 -4.0850E-14 2.2049E-14 2.3705E-13
-1.7292E-14 -2.1259E-13 -4.0850E-14 7.1462E-14 -1.3631E-13 -1.6589E-12
3.0594E-13 1.3790E-12 2.2049E-14 -1.3631E-13 1.3300E-12 9.6933E-12
1.3110E-12 1.4705E-11 2.3705E-13 -1.6589E-12 9.6933E-12 1.1411E-10
# lat0 lon0 xBary yBary zBary JD0
9.158941 16.345232 0.531755 0.134760 -0.837214 2451429.035503
# Heliocentric elements and errors
Epoch: 2451420.5000 = 1999/08/30
Mean Anomaly: 311.92430 +/- 0.032
Argument of Peri: 185.54951 +/- 0.057
Long of Asc Node: 253.04530 +/- 0.002
Inclination: 10.53200 +/- 0.000
Eccentricity: 0.16043597 +/- 0.0003
Semi-Major Axis: 36.66323668 +/- 0.0057
Time of Perihelion: 2462248.9856 +/- 6.7
Perihelion: 30.78113480 +/- 0.0121
Aphelion: 42.54533856 +/- 0.0129
Period (y) 222.0007 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 31.75278571 +/- 0.0012
Ecliptic Y 8.75841688 +/- 0.0003
Ecliptic Z 5.17194026 +/- 0.0002
Ecliptic XDOT -0.00116478 +/- 0.0000
Ecliptic YDOT 0.00286199 +/- 0.0000
Ecliptic ZDOT -0.00036231 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.34213900 +/- 0.0011
Geocenter to KBO 32.49263362 +/- 0.0012
# Hcoef: 7.92
The following table shows the complete astrometric record for 99RW215. 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 (99RW215) followed by the observatory code and reference code for the source of the astrometry.
1999 09 07.53476 00 45 44.02 +14 51 56.9 23.2R 99RW215 568 Ca9937 1999 09 07.58118 00 45 43.80 +14 51 55.0 22.8R 99RW215 568 Ca9937 1999 09 07.61487 00 45 43.64 +14 51 54.6 23.0R 99RW215 568 Ca9937 1999 09 11.56880 00 45 24.04 +14 50 20.3 22.9R 99RW215 568 Ca9937 1999 09 11.57924 00 45 23.98 +14 50 20.2 22.9R 99RW215 568 Ca9937 1999 09 13.50731 00 45 14.14 +14 49 30.8 22.7R 99RW215 568 Ca9937 1999 09 13.51439 00 45 14.10 +14 49 30.6 23.1R 99RW215 568 Ca9937 1999 10 08.52087 00 42 56.26 +14 35 59.0 22.6R 99RW215 568 Ca9937 1999 10 08.54696 00 42 56.09 +14 35 58.0 22.8R 99RW215 568 Ca9937 1999 11 09.40896 00 40 11.29 +14 14 49.4 22.9R 99RW215 568 Ca9937 1999 11 09.44946 00 40 11.13 +14 14 47.6 23.0R 99RW215 568 Ca9937 2000 12 27.26274 00 46 13.744 +14 26 12.74 22.7R 99RW215 568 Cl2529 2000 12 28.26969 00 46 14.269 +14 25 56.12 22.7R 99RW215 568 Cl2529 2003 11 22.12531 01 11 17.12 +16 26 56.5 22.4R 99RW215 695 Cl2529 2003 11 22.18533 01 11 16.87 +16 26 54.3 99RW215 695 Cl2529
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 0.22 0.00 -0.12 2 0.0001 -3.68 0.01 -0.49 -0.95 3 0.0002 -5.97 0.24 0.06 -0.64 4 0.0110 -304.28 -0.01 25.71 -0.39 5 0.0111 -305.12 -0.03 25.96 -0.20 6 0.0164 -455.71 -0.07 37.00 -0.06 7 0.0164 -456.32 -0.11 37.04 -0.06 8 0.0848 -2614.15 0.05 85.13 0.66 9 0.0849 -2616.81 -0.23 85.20 0.76 10 0.1721 -5319.31 -0.18 -122.44 0.17 11 0.1723 -5322.16 0.00 -123.15 -0.11 12 1.3052 -213.09 0.08 -1589.09 0.64 13 1.3080 -212.63 0.08 -1607.37 0.77 14 4.2070 22735.16 -0.06 -3186.43 -0.24 15 4.2071 22730.96 0.02 -3187.16 -0.21
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.
99RW215 quality flag:3 Type: 4:3E 4:3E 4:3E axisobj 36.653 36.670 36.636 ecceobj 0.161 0.162 0.160 incobj 10.530 10.530 10.530 qmin 30.134 30.164 30.188 qmax 43.204 43.202 43.319 amean 36.477 36.477 36.477 amin 36.085 36.101 36.081 amax 36.906 36.880 36.931 emean 0.145 0.145 0.146 emin 0.116 0.112 0.117 emax 0.173 0.172 0.173 imean 12.868 12.763 12.545 imin 11.305 11.216 10.799 imax 14.507 14.289 14.446 fracstop 1.000 1.000 1.000 cjmean 2.948 2.949 2.950 libcent 0 179.5 180.2 179.3 libamp 0 90.9 78.0 95.6 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 176.0 180.0 180.0 kozaiamp 180.0 180.0 180.0