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: 01RU143
# Created Fri May 2 02:36:35 2008
# Orbit generated from Bernstein formalism
# Fitting 14 observations of 15
# Arc: 6.16y
# First observation: 2001/09/12
# Last observation: 2007/11/11
Preliminary a, adot, b, bdot, g, gdot:
-0.000026 0.020443 -0.000006 -0.002230 0.023158 0.000000
# Chi-squared of fit: 7.47 DOF: 22 RMS: 0.13
# Min/Max residuals: -0.36 0.23
# Exact a, adot, b, bdot, g, gdot:
1.296033E-05 2.063278E-02 -2.621847E-06 -2.255265E-03 2.331683E-02 2.275605E-03
# Covariance matrix:
2.3930E-13 -1.2394E-13 -5.4961E-15 1.2633E-14 9.2312E-14 -1.0126E-12
-1.2394E-13 2.7590E-13 1.4617E-14 -3.1064E-14 1.2025E-13 2.5041E-12
-5.4961E-15 1.4617E-14 1.6753E-13 -4.9365E-14 5.1480E-15 1.5678E-13
1.2633E-14 -3.1064E-14 -4.9365E-14 4.1226E-14 -8.3541E-15 -3.3736E-13
9.2312E-14 1.2025E-13 5.1480E-15 -8.3541E-15 4.1596E-13 6.8904E-13
-1.0126E-12 2.5041E-12 1.5678E-13 -3.3736E-13 6.8904E-13 2.7169E-11
# lat0 lon0 xBary yBary zBary JD0
2.006780 12.240255 0.392216 0.032274 -0.924727 2452164.826773
# Heliocentric elements and errors
Epoch: 2452160.5000 = 2001/09/08
Mean Anomaly: 132.87849 +/- 0.086
Argument of Peri: 18.68953 +/- 0.080
Long of Asc Node: 209.26640 +/- 0.001
Inclination: 6.49445 +/- 0.001
Eccentricity: 0.14512224 +/- 0.0001
Semi-Major Axis: 39.52701180 +/- 0.0041
Time of Perihelion: 2418656.8921 +/- 21.0
Perihelion: 33.79076313 +/- 0.0058
Aphelion: 45.26326046 +/- 0.0066
Period (y) 248.5130 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 42.87661105 +/- 0.0012
Ecliptic Y 8.90602757 +/- 0.0002
Ecliptic Z 1.50173304 +/- 0.0000
Ecliptic XDOT -0.00025227 +/- 0.0000
Ecliptic YDOT 0.00242725 +/- 0.0000
Ecliptic ZDOT -0.00025508 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.81753421 +/- 0.0011
Geocenter to KBO 42.88747952 +/- 0.0012
# Hcoef: 5.68
The following table shows the complete astrometric record for 01RU143. 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 (01RU143) followed by the observatory code and reference code for the source of the astrometry.
2001 09 12.32603 00 41 52.56 +06 41 05.8 22.0R 01RU143 695 Ce0436 2001 09 12.41952 00 41 52.17 +06 41 03.1 01RU143 695 Ce0436 2001 10 18.28284 00 39 19.27 +06 24 10.4 22.7R 01RU143 688 Ce0436 2001 10 18.36006 00 39 18.97 +06 24 08.0 01RU143 688 Ce0436 2001 11 03.05182 00 38 16.99 +06 16 54.0 20.6 01RU143 304 Ce6603 2001 11 03.09817 00 38 16.83 +06 16 53.0 01RU143 304 Ce6603 2002 08 11.38527 00 48 09.33 +07 12 06.3 21.4R 01RU143 807 C47440 2002 08 12.32833 00 48 07.22 +07 11 53.9 01RU143 807 Cg7894 2002 08 12.40579 00 48 07.04 +07 11 53.0 01RU143 807 Cg7894 2002 11 07.12365 00 42 37.53 +06 35 55.3 22.2R 01RU143 695 Cg7894 2002 11 07.23070 00 42 37.14 +06 35 52.5 01RU143 695 Cg7894 2004 11 18.26016 00 51 04.00 +07 11 48.0 22.3R 01RU143 568 Cm0414 2004 11 18.31741 00 51 03.81 +07 11 46.8 01RU143 568 Cm0414 2007 11 11.24415 01 05 02.01 +08 13 38.1 22.5R 01RU143 688 Cw6713 2007 11 11.30887 01 05 01.70 +08 13 37.7 01RU143 688 Cw6713
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 0.21 0.00 0.23 2 0.0003 -6.40 -0.05 -0.21 -0.01 3 0.0984 -2499.70 -0.27 -38.71 -0.03 4 0.0987 -2504.75 0.06 -39.16 -0.36 5 0.1416 -3525.19 -0.11 -75.33 -0.16 6 0.1417 -3527.78 0.14 -75.32 -0.04 7 0.9119 5893.11 0.07 -474.18 0.08 8 0.9144 5859.33 -0.10 -473.41 0.07 9 0.9147 5856.51 -0.03 -473.20 0.19 10 1.1521 495.15 0.09 -547.88 0.04 11 1.1524 488.70 -0.03 -548.19 -0.02 12 3.1839 8285.13 0.09 -1499.51 -0.02 13 3.1841 8282.06 -0.07 -1499.53 0.11 14 6.1627 21284.13 -0.01 -2854.76 -0.09 15 6.1629 21279.67 ( -0.53) -2853.37 ( 1.42)
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.
01RU143 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.686 39.686 39.686 ecceobj 0.143 0.143 0.143 incobj 6.486 6.486 6.486 qmin 32.826 32.825 32.826 qmax 46.546 46.546 46.546 amean 39.457 39.457 39.457 amin 39.051 39.052 39.051 amax 39.907 39.907 39.907 emean 0.149 0.149 0.149 emin 0.129 0.130 0.129 emax 0.167 0.167 0.167 imean 7.898 7.898 7.898 imin 6.968 6.968 6.968 imax 8.653 8.653 8.653 fracstop 1.000 1.000 1.000 cjmean 3.005 3.005 3.005 libcent 0 179.4 179.5 179.3 libamp 0 68.3 68.3 68.3 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 183.3 183.3 183.3 kozaiamp 180.0 180.0 180.0