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: 88267
# Created Sun Dec 22 02:06:51 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 31 observations of 31
# Arc: 4.18y
# First observation: 2001/05/22
# Last observation: 2005/07/26
# Chi-squared of fit: 41.02 DOF: 56 RMS: 0.20
# Min/Max residuals: -0.37 0.69
# Exact a, adot, b, bdot, g, gdot:
1.431950E-05 2.288554E-02 -2.168929E-07 -1.136270E-04 2.385151E-02 5.389052E-04
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
0.417185 -121.989196 -0.055358 0.007278 -1.017218 2452051.694693
# Heliocentric elements and errors
Epoch: 2452052.5000 = 2001/05/23
Mean Anomaly: 98.15388 +/- 0.000
Argument of Peri: 23.56195 +/- 0.000
Long of Asc Node: 113.40921 +/- 0.000
Inclination: 0.49533 +/- 0.000
Eccentricity: 0.02624891 +/- 0.0000
Semi-Major Axis: 42.74915294 +/- 0.0000
Time of Perihelion: 2424217.2790 +/- 0.0
Perihelion: 41.62703434 +/- 0.0000
Aphelion: 43.87127153 +/- 0.0000
Period (y) 279.5114 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.69810693 +/- 0.0000
Ecliptic Y -36.44562441 +/- 0.0000
Ecliptic Z 0.30526211 +/- 0.0000
Ecliptic XDOT 0.00218683 +/- 0.0000
Ecliptic YDOT -0.00144191 +/- 0.0000
Ecliptic ZDOT -0.00001240 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.93692323 +/- 0.0000
Geocenter to KBO 41.92608987 +/- 0.0000
# Hcoef: 6.70
The following table shows the complete astrometric record for 88267. 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 (88267) followed by the observatory code and reference code for the source of the astrometry.
2001 05 22.19395 15 43 24.61 -19 18 37.2 22.5R 88267 807 Cd1816 2001 05 22.27331 15 43 24.21 -19 18 35.9 88267 807 Cd1816 2001 06 10.02005 15 41 55.92 -19 13 51.8 23.3R 88267 304 Cd1816 2001 06 10.09499 15 41 55.57 -19 13 50.5 88267 304 Cd1816 2001 08 19.01261 15 39 24.82 -19 06 09.4 21.1R 88267 807 Ch1324 2001 08 20.00889 15 39 25.71 -19 06 13.1 88267 807 Ch1324 2001 08 21.01634 15 39 26.66 -19 06 16.8 88267 807 Ch1324 2002 08 09.06743 15 44 38.68 -19 23 33.8 22.4R 88267 807 Cg3190 2002 08 10.06390 15 44 38.44 -19 23 33.5 88267 807 Cg3190 2002 08 11.06858 15 44 38.33 -19 23 33.8 88267 807 Cg3190 2002 08 12.06326 15 44 38.29 -19 23 34.3 88267 807 Cg3190 2003 04 29.48928 15 56 04.43 -19 58 40.0 23.8R 88267 568 Ch9866 2003 04 29.55598 15 56 04.08 -19 58 39.3 88267 568 Ch9866 2003 04 30.55938 15 55 59.60 -19 58 26.0 88267 568 Ch9866 2003 05 30.20937 15 53 37.44 -19 51 21.7 22.6R 88267 807 Cj8695 2003 05 30.29412 15 53 37.04 -19 51 19.9 88267 807 Cj8695 2004 05 27.12837 15 59 15.22 -20 08 20.4 23.0R 88267 304 Ck8652 2004 05 27.13214 15 59 15.19 -20 08 20.3 88267 304 Ck8652 2004 05 27.13565 15 59 15.18 -20 08 20.2 88267 304 Ck8652 2004 05 27.13873 15 59 15.16 -20 08 20.2 88267 304 Ck8652 2004 05 27.14179 15 59 15.15 -20 08 20.2 88267 304 Ck8652 2004 05 27.14486 15 59 15.13 -20 08 20.2 88267 304 Ck8652 2004 05 27.14843 15 59 15.12 -20 08 20.1 88267 304 Ck8652 2004 05 27.15219 15 59 15.10 -20 08 20.1 88267 304 Ck8652 2004 05 27.15595 15 59 15.09 -20 08 20.0 88267 304 Ck8652 2004 05 27.15971 15 59 15.06 -20 08 20.1 88267 304 Ck8652 2004 05 27.16355 15 59 15.04 -20 08 19.9 88267 304 Ck8652 2004 05 27.16731 15 59 15.02 -20 08 19.9 88267 304 Ck8652 2005 07 26.55270 16 00 55.12 -20 13 53.2 22.9R 88267 250 S~06GW 2005 07 26.55941 16 00 55.11 -20 13 53.2 88267 250 S~06GW 2005 07 26.56612 16 00 55.09 -20 13 53.2 88267 250 S~06GW
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 0.19 0.00 -0.01
2 0.0002 0.00 0.07 0.00 0.03
3 0.0515 0.00 -0.08 0.00 -0.09
4 0.0517 0.00 -0.24 0.00 0.15
5 0.2432 0.00 0.00 0.00 0.19
6 0.2459 0.00 0.31 0.00 0.04
7 0.2487 0.00 -0.06 0.00 0.25
8 1.2153 0.00 0.25 0.00 -0.24
9 1.2180 0.00 -0.13 0.00 0.01
10 1.2207 0.00 0.05 0.00 -0.04
11 1.2235 0.00 -0.17 0.00 0.02
12 1.9365 0.00 0.55 0.00 -0.06
13 1.9367 0.00 -0.16 0.00 -0.25
14 1.9394 0.00 -0.00 0.00 -0.37
15 2.0206 0.00 -0.11 0.00 0.12
16 2.0208 0.00 0.14 0.00 0.69
17 3.0142 0.00 -0.03 0.00 -0.13
18 3.0142 0.00 -0.20 0.00 -0.08
19 3.0142 0.00 -0.09 0.00 -0.03
20 3.0142 0.00 -0.16 0.00 -0.08
21 3.0142 0.00 -0.08 0.00 -0.12
22 3.0142 0.00 -0.15 0.00 -0.16
23 3.0142 0.00 -0.03 0.00 -0.11
24 3.0143 0.00 -0.05 0.00 -0.16
25 3.0143 0.00 0.08 0.00 -0.11
26 3.0143 0.00 -0.09 0.00 -0.27
27 3.0143 0.00 -0.10 0.00 -0.12
28 3.0143 0.00 -0.12 0.00 -0.17
29 4.1789 0.00 0.31 0.00 0.36
30 4.1790 0.00 0.34 0.00 0.33
31 4.1790 0.00 0.23 0.00 0.30
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.
88267 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.737 42.737 42.737 ecceobj 0.024 0.024 0.024 incobj 0.496 0.496 0.496 qmin 40.803 40.800 40.804 qmax 45.466 45.467 45.465 amean 43.028 43.029 43.028 amin 42.698 42.701 42.696 amax 43.373 43.361 43.374 emean 0.029 0.029 0.029 emin 0.010 0.010 0.010 emax 0.049 0.049 0.049 imean 1.674 1.674 1.674 imin 0.525 0.524 0.524 imax 2.388 2.387 2.388 excite_mean 0.043 0.043 0.043 fracstop 1.000 1.000 1.000 cjmean 3.088 3.088 3.088 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 165.8 165.6 165.7 kozaiamp 180.0 180.0 180.0