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: 01KE77
# Created Sun Dec 22 02:08:16 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 12 observations of 12
# Arc: 6.95y
# First observation: 2001/05/24
# Last observation: 2008/05/04
# Chi-squared of fit: 14.20 DOF: 18 RMS: 0.19
# Min/Max residuals: -0.28 0.46
# Exact a, adot, b, bdot, g, gdot:
1.635938E-05 2.662511E-02 6.413089E-06 1.005561E-02 2.649176E-02 3.323830E-03
# Covariance matrix:
3.6786E-13 -1.0698E-13 1.0048E-14 -1.2254E-14 2.3349E-13 -1.9733E-13
-1.0698E-13 1.6139E-13 -2.3518E-14 5.1974E-14 2.1132E-14 8.2665E-13
1.0048E-14 -2.3518E-14 2.3533E-13 -5.3572E-14 -3.9193E-15 -1.3681E-13
-1.2254E-14 5.1974E-14 -5.3572E-14 3.8942E-14 3.0736E-14 3.1714E-13
2.3349E-13 2.1132E-14 -3.9193E-15 3.0736E-14 5.4150E-13 4.8348E-13
-1.9733E-13 8.2665E-13 -1.3681E-13 3.1714E-13 4.8348E-13 5.0405E-12
# lat0 lon0 xBary yBary zBary JD0
3.586879 -110.384631 0.116198 0.063213 -1.010484 2452053.725883
# Heliocentric elements and errors
Epoch: 2452054.5000 = 2001/05/25
Mean Anomaly: 31.81352 +/- 0.018
Argument of Peri: 324.56646 +/- 0.027
Long of Asc Node: 240.31526 +/- 0.000
Inclination: 21.04541 +/- 0.000
Eccentricity: 0.18116619 +/- 0.0001
Semi-Major Axis: 45.18148634 +/- 0.0063
Time of Perihelion: 2442251.7395 +/- 5.9
Perihelion: 36.99612848 +/- 0.0069
Aphelion: 53.36684419 +/- 0.0087
Period (y) 303.7029 +/- 0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -13.58006020 +/- 0.0004
Ecliptic Y -36.21776909 +/- 0.0010
Ecliptic Z 2.36180489 +/- 0.0001
Ecliptic XDOT 0.00247413 +/- 0.0000
Ecliptic YDOT -0.00121660 +/- 0.0000
Ecliptic ZDOT 0.00105887 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.75199765 +/- 0.0009
Geocenter to KBO 37.74755446 +/- 0.0010
# Hcoef: 7.19
The following table shows the complete astrometric record for 01KE77. 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 (01KE77) followed by the observatory code and reference code for the source of the astrometry.
2001 05 24.22514 16 34 03.69 -18 20 41.7 22.9R 01KE77 807 Cd1817 2001 05 24.28835 16 34 03.34 -18 20 40.5 01KE77 807 Cd1817 2001 06 13.08041 16 32 18.53 -18 15 09.6 23.2R 01KE77 304 Cd1817 2001 06 13.20773 16 32 17.83 -18 15 07.9 01KE77 304 Cd1817 2001 08 19.06780 16 28 46.43 -18 05 30.5 22.0R 01KE77 807 Ch1324 2001 08 21.07834 16 28 46.16 -18 05 30.2 01KE77 807 Ch1324 2004 07 16.11448 16 49 31.99 -17 04 38.8 22.7R 01KE77 807 Cn3253 2004 07 16.21538 16 49 31.60 -17 04 38.1 01KE77 807 Cn3253 2005 04 14.34875 17 03 03.23 -17 02 40.3 23.1R 01KE77 304 Cn3253 2005 04 14.37256 17 03 03.17 -17 02 39.9 01KE77 304 Cn3253 2008 05 03.41466 17 20 48.66 -15 44 11.8 01KE77 695 Cz0380 2008 05 04.43724 17 20 44.66 -15 43 55.3 01KE77 695 Cz0380
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 -0.11 0.00 -0.07
2 0.0002 0.00 -0.26 0.00 0.01
3 0.0544 0.00 0.46 0.00 0.28
4 0.0547 0.00 0.02 0.00 0.00
5 0.2378 0.00 -0.03 0.00 -0.19
6 0.2433 0.00 0.04 0.00 -0.28
7 3.1455 0.00 -0.07 0.00 -0.10
8 3.1458 0.00 -0.15 0.00 -0.07
9 3.8908 0.00 0.00 0.00 0.35
10 3.8909 0.00 0.11 0.00 0.36
11 6.9437 0.00 0.03 0.00 -0.17
12 6.9465 0.00 -0.02 0.00 -0.14
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.
01KE77 quality flag:2 Type: SCATEXTD SCATNEAR SCATNEAR axisobj 45.193 45.193 45.193 ecceobj 0.180 0.180 0.180 incobj 21.043 21.043 21.043 qmin 36.026 35.948 35.958 qmax 55.401 55.430 55.465 amean 45.496 45.462 45.485 amin 45.058 45.057 45.062 amax 45.960 45.967 45.995 emean 0.186 0.185 0.187 emin 0.166 0.167 0.168 emax 0.206 0.207 0.207 imean 22.130 22.149 22.102 imin 21.555 21.541 21.516 imax 22.651 22.667 22.609 excite_mean 0.420 0.420 0.420 fracstop 1.000 1.000 1.000 cjmean 2.899 2.899 2.899 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 171.5 171.4 171.8 kozaiamp 180.0 180.0 180.0