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: 767254
# Created Sat Feb 22 02:07:55 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 44 observations of 44
# Arc: 19.29y
# First observation: 2001/09/20
# Last observation: 2021/01/04
# Chi-squared of fit: 26.09 DOF: 82 RMS: 0.14
# Min/Max residuals: -0.50 0.55
# Exact a, adot, b, bdot, g, gdot:
1.873716E-05 4.324173E-02 -1.289925E-05 -3.157405E-02 3.730601E-02 -2.068410E-02
# 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
9.296009 -25.165717 -0.378966 0.149736 -0.915545 2452172.794881
# Heliocentric elements and errors
Epoch: 2452172.5000 = 2001/09/20
Mean Anomaly: 353.44410 +/- 0.000
Argument of Peri: 214.75117 +/- 0.000
Long of Asc Node: 167.69173 +/- 0.000
Inclination: 37.13740 +/- 0.000
Eccentricity: 0.71210537 +/- 0.0000
Semi-Major Axis: 82.12845170 +/- 0.0000
Time of Perihelion: 2457123.2268 +/- 0.0
Perihelion: 23.64434018 +/- 0.0000
Aphelion: 140.61256322 +/- 0.0000
Period (y) 744.3011 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 24.94588801 +/- 0.0000
Ecliptic Y -11.29445485 +/- 0.0000
Ecliptic Z 4.32968009 +/- 0.0000
Ecliptic XDOT 0.00032373 +/- 0.0000
Ecliptic YDOT 0.00335105 +/- 0.0000
Ecliptic ZDOT -0.00253175 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 27.72400983 +/- 0.0000
Geocenter to KBO 26.80560560 +/- 0.0000
# Hcoef: 8.20
The following table shows the complete astrometric record for 767254. 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 (767254) followed by the observatory code and reference code for the source of the astrometry.
2001 09 20.294138 22 13 11.40 -01 04 22.1 22.4r 767254 645 C~3xr6 2001 09 20.294967 22 13 11.39 -01 04 22.1 21.9i 767254 645 C~3xr6 2001 09 20.297455 22 13 11.40 -01 04 22.0 22.9g 767254 645 C~3xr6 2009 10 16.188058 00 01 11.02 -08 31 54.8 21.7r 767254 645 C~3xr6 2009 10 16.188887 00 01 11.00 -08 31 54.9 21.2i 767254 645 C~3xr6 2014 09 16.265666 01 27 31.212 -12 00 45.89 21.7i 767254 W84 C~3wpO 2014 09 21.25556 01 27 01.67 -12 07 23.5 767254 W84 C~3wpO 2014 09 21.33288 01 27 01.18 -12 07 30.0 22.8V 767254 W84 C~3wpO 2014 09 21.37645 01 27 00.91 -12 07 33.4 767254 W84 C~3wpO 2014 10 22.25616 01 23 29.873 -12 42 30.03 767254 304 C~3wpO 2014 10 23.00486 01 23 24.633 -12 43 10.22 767254 304 C~3wpO 2014 12 12.150423 01 19 03.134 -13 00 19.43 21.5z 767254 W84 C~3wpO 2014 12 12.151777 01 19 03.131 -13 00 19.59 21.8i 767254 W84 C~3wpO 2015 10 17.194821 01 41 21.874 -13 17 15.57 22.6g 767254 W84 C~3wpO 2015 10 23.237240 01 40 38.577 -13 23 04.08 21.7z 767254 W84 C~3wpO 2015 11 02.171569 01 39 28.400 -13 31 03.68 22.6g 767254 W84 C~3wpO 2015 11 06.243444 01 39 00.571 -13 33 44.33 22.7g 767254 W84 C~3wpO 2015 11 18.230446 01 37 44.560 -13 39 25.18 21.8i 767254 W84 C~3wpO 2015 11 20.118073 01 37 33.659 -13 40 00.38 21.7z 767254 W84 C~3wpO 2016 09 07.362055 02 02 26.936 -13 02 19.32 22.2r 767254 W84 C~3wpO 2016 09 07.363432 02 02 26.933 -13 02 19.35 21.8i 767254 W84 C~3wpO 2016 09 07.364821 02 02 26.928 -13 02 19.49 23.1g 767254 W84 C~3wpO 2016 09 30.236453 02 00 27.977 -13 33 44.80 21.8i 767254 W84 C~3wpO 2016 09 30.237830 02 00 27.970 -13 33 44.93 21.9r 767254 W84 C~3wpO 2016 09 30.239208 02 00 27.963 -13 33 45.19 22.7g 767254 W84 C~3wpO 2017 11 23.135214 02 11 27.713 -14 48 37.48 22.0i 767254 W84 C~3wpO 2017 11 23.136603 02 11 27.698 -14 48 37.50 22.4r 767254 W84 C~3wpO 2017 11 27.083096 02 11 03.683 -14 49 19.11 22.0i 767254 W84 C~3wpO 2017 12 14.074508 02 09 38.719 -14 47 51.37 22.4r 767254 W84 C~3wpO 2017 12 14.075886 02 09 38.718 -14 47 51.45 22.1i 767254 W84 C~3wpO 2017 12 22.145423 02 09 11.130 -14 44 43.36 22.2r 767254 W84 C~3wpO 2017 12 23.138108 02 09 08.391 -14 44 14.07 23.0g 767254 W84 C~3wpO 2018 11 16.266349 02 29 17.151 -15 12 59.28 22.8g 767254 W84 C~3wpO 2020 10 14.51202 03 06 34.601 -15 23 55.89 22.0w 767254 F51 C~4A4f 2020 10 14.52370 03 06 34.531 -15 23 56.61 22.1w 767254 F51 C~4A4f 2020 10 14.53539 03 06 34.454 -15 23 57.33 22.1w 767254 F51 C~4A4f 2020 10 14.54705 03 06 34.388 -15 23 58.19 22.0w 767254 F51 C~4A4f 2020 10 23.48516 03 05 35.448 -15 33 42.34 22.1w 767254 F51 C~4JA9 2020 10 23.49601 03 05 35.378 -15 33 42.86 22.0w 767254 F51 C~4JA9 2020 10 23.50684 03 05 35.314 -15 33 43.67 21.9w 767254 F51 C~4JA9 2020 10 23.51766 03 05 35.238 -15 33 44.26 21.9w 767254 F51 C~4JA9 2021 01 04.27430 02 58 08.738 -15 43 19.13 22.2w 767254 F51 C~4UE4 2021 01 04.28530 02 58 08.708 -15 43 18.74 22.3w 767254 F51 C~4UE4 2021 01 04.29634 02 58 08.688 -15 43 18.22 22.2w 767254 F51 C~4UE4
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 -0.04 0.00 -0.12
2 0.0000 0.00 -0.12 0.00 -0.07
3 0.0000 0.00 0.23 0.00 0.17
4 8.0709 0.00 0.05 0.00 0.02
5 8.0709 0.00 -0.18 0.00 -0.04
6 12.9883 0.00 0.08 0.00 -0.11
7 13.0019 0.00 0.19 0.00 0.32
8 13.0022 0.00 0.11 0.00 -0.10
9 13.0023 0.00 0.14 0.00 -0.08
10 13.0868 0.00 -0.44 0.00 0.55
11 13.0889 0.00 -0.50 0.00 0.27
12 13.2262 0.00 0.09 0.00 -0.01
13 13.2262 0.00 0.10 0.00 -0.19
14 14.0723 0.00 -0.03 0.00 -0.04
15 14.0888 0.00 0.06 0.00 -0.10
16 14.1160 0.00 0.11 0.00 0.11
17 14.1272 0.00 0.13 0.00 -0.04
18 14.1600 0.00 -0.02 0.00 -0.09
19 14.1652 0.00 0.05 0.00 -0.09
20 14.9653 0.00 0.02 0.00 -0.11
21 14.9653 0.00 0.06 0.00 -0.02
22 14.9653 0.00 0.07 0.00 -0.04
23 15.0279 0.00 0.04 0.00 0.05
24 15.0279 0.00 0.07 0.00 0.03
25 15.0279 0.00 0.10 0.00 -0.13
26 16.1748 0.00 0.02 0.00 -0.04
27 16.1748 0.00 -0.07 0.00 -0.04
28 16.1856 0.00 -0.07 0.00 -0.04
29 16.2321 0.00 0.03 0.00 0.02
30 16.2321 0.00 0.11 0.00 -0.09
31 16.2542 0.00 -0.03 0.00 -0.06
32 16.2569 0.00 -0.01 0.00 -0.05
33 17.1553 0.00 -0.05 0.00 0.04
34 19.0670 0.00 -0.08 0.00 -0.08
35 19.0670 0.00 -0.01 0.00 0.01
36 19.0671 0.00 -0.04 0.00 0.11
37 19.0671 0.00 0.09 0.00 0.06
38 19.0916 0.00 -0.12 0.00 -0.07
39 19.0916 0.00 -0.02 0.00 0.07
40 19.0916 0.00 0.16 0.00 -0.09
41 19.0916 0.00 0.16 0.00 -0.03
42 19.2908 0.00 -0.17 0.00 0.13
43 19.2909 0.00 -0.13 0.00 0.02
44 19.2909 0.00 0.05 0.00 0.03
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.
767254 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 83.170 83.168 83.172 ecceobj 0.715 0.715 0.715 incobj 37.079 37.079 37.079 qmin 23.264 23.256 23.264 qmax 145.819 142.913 154.765 amean 82.039 81.016 82.914 amin 80.429 79.434 80.010 amax 85.188 83.906 90.483 emean 0.705 0.695 0.697 emin 0.695 0.676 0.670 emax 0.717 0.715 0.715 imean 37.077 37.592 38.007 imin 36.079 36.078 36.076 imax 37.750 39.245 40.169 excite_mean 0.928 0.925 0.930 fracstop 0.173 0.167 0.203 cjmean 2.233 2.237 2.236 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 225.1 220.6 219.2 kozaiamp 11.0 5.0 3.9