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: 408832
# Created Wed Dec 25 02:07:01 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 30 observations of 30
# Arc: 21.17y
# First observation: 2000/07/31
# Last observation: 2021/10/03
# Chi-squared of fit: 77.88 DOF: 54 RMS: 0.28
# Min/Max residuals: -0.61 1.30
# Exact a, adot, b, bdot, g, gdot:
1.546863E-05 2.082156E-02 -1.269425E-07 -7.496375E-04 2.258892E-02 -4.864587E-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
0.639270 -33.782919 0.317731 0.010588 -0.963737 2451756.790313
# Heliocentric elements and errors
Epoch: 2451756.5000 = 2000/07/31
Mean Anomaly: 236.60288 +/- 0.000
Argument of Peri: 290.28335 +/- 0.000
Long of Asc Node: 162.76955 +/- 0.000
Inclination: 2.14541 +/- 0.000
Eccentricity: 0.04135461 +/- 0.0000
Semi-Major Axis: 44.18024731 +/- 0.0000
Time of Perihelion: 2488522.2277 +/- 0.0
Perihelion: 42.35319023 +/- 0.0000
Aphelion: 46.00730438 +/- 0.0000
Period (y) 293.6638 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 37.42287805 +/- 0.0000
Ecliptic Y -25.40966666 +/- 0.0000
Ecliptic Z 0.49390046 +/- 0.0000
Ecliptic XDOT 0.00134798 +/- 0.0000
Ecliptic YDOT 0.00213532 +/- 0.0000
Ecliptic ZDOT -0.00009136 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.23680875 +/- 0.0000
Geocenter to KBO 44.26953921 +/- 0.0000
# Hcoef: 6.09
The following table shows the complete astrometric record for 408832. 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 (408832) followed by the observatory code and reference code for the source of the astrometry.
2000 07 31.28957 21 52 56.76 -12 10 37.3 22.0R 408832 807 Cg3218 2000 07 31.36788 21 52 56.41 -12 10 38.6 408832 807 Cg3218 2000 09 21.18305 21 49 23.59 -12 29 44.3 22.4R 408832 695 Ch1433 2000 09 21.26456 21 49 23.30 -12 29 45.5 408832 695 Ch1433 2001 08 21.16381 21 56 08.42 -11 56 33.0 21.3R 408832 807 Cd7926 2001 08 21.23808 21 56 08.11 -11 56 34.9 408832 807 Cd7926 2001 09 12.25165 21 54 36.30 -12 04 56.9 22.2R 408832 695 Cd7926 2001 09 12.29892 21 54 36.10 -12 04 58.1 408832 695 Cd7926 2002 08 09.19413 22 01 39.22 -11 29 37.3 21.5R 408832 807 Cg3218 2002 08 10.27184 22 01 34.68 -11 30 01.9 408832 807 Cg3218 2002 08 10.37531 22 01 34.24 -11 30 04.4 408832 807 Cg3218 2003 08 31.33446 22 04 43.59 -11 15 50.2 22.9g 408832 568 Cq9101 2003 08 31.36834 22 04 43.44 -11 15 51.0 22.8g 408832 568 Cq9101 2003 08 31.39518 22 04 43.32 -11 15 51.5 23.1g 408832 568 Cq9101 2003 09 04.45098 22 04 26.22 -11 17 27.9 23.6g 408832 568 Cq9101 2005 09 30.11278 22 12 00.94 -10 41 31.8 22.5R 408832 688 Co3551 2005 09 30.20355 22 12 00.63 -10 41 33.1 408832 688 Co3551 2006 09 24.16843 22 16 59.17 -10 16 17.6 22.4R 408832 688 Cs0792 2006 09 24.26229 22 16 58.88 -10 16 21.2 408832 688 Cs0792 2009 10 12.11987 22 29 49.31 -09 11 15.5 22.8R 408832 688 C~09wm 2009 10 12.18649 22 29 49.10 -09 11 16.6 408832 688 C~09wm 2014 08 31.35238 22 55 31.28 -06 51 03.1 22.4R 408832 G37 C~18cF 2014 08 31.44025 22 55 30.90 -06 51 05.4 408832 G37 C~18cF 2014 09 01.33486 22 55 27.13 -06 51 29.0 408832 G37 C~18cF 2014 09 01.42249 22 55 26.77 -06 51 31.4 408832 G37 C~18cF 2014 10 22.13472 22 52 17.68 -07 11 17.2 22.6R 408832 G37 C~1C5i 2014 10 22.24126 22 52 17.40 -07 11 19.0 408832 G37 C~1C5i 2021 10 03.136140 23 25 27.377 -04 03 54.61 22.6G 408832 G37 C~595N 2021 10 03.189140 23 25 27.158 -04 03 55.98 408832 G37 C~595N 2021 10 03.242130 23 25 26.952 -04 03 57.33 408832 G37 C~595N
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 -0.15 0.00 -0.14
2 0.0002 0.00 -0.53 0.00 0.25
3 0.1421 0.00 -0.01 0.00 -0.33
4 0.1423 0.00 -0.03 0.00 0.02
5 1.0565 0.00 0.17 0.00 0.16
6 1.0567 0.00 0.41 0.00 0.00
7 1.1169 0.00 0.18 0.00 -0.02
8 1.1171 0.00 -0.00 0.00 -0.21
9 2.0230 0.00 0.14 0.00 -0.23
10 2.0260 0.00 0.16 0.00 0.07
11 2.0262 0.00 0.21 0.00 -0.04
12 3.0829 0.00 0.23 0.00 0.07
13 3.0830 0.00 0.18 0.00 0.08
14 3.0831 0.00 0.12 0.00 0.22
15 3.0942 0.00 0.17 0.00 -0.24
16 5.1658 0.00 -0.45 0.00 -0.60
17 5.1661 0.00 -0.52 0.00 -0.15
18 6.1489 0.00 -0.61 0.00 1.30
19 6.1491 0.00 0.27 0.00 -0.29
20 9.1987 0.00 0.05 0.00 -0.04
21 9.1989 0.00 -0.16 0.00 0.03
22 14.0837 0.00 -0.09 0.00 -0.00
23 14.0839 0.00 -0.15 0.00 0.02
24 14.0864 0.00 -0.19 0.00 0.09
25 14.0866 0.00 0.04 0.00 0.01
26 14.2254 0.00 0.23 0.00 0.29
27 14.2257 0.00 0.34 0.00 0.26
28 21.1741 0.00 0.07 0.00 -0.17
29 21.1743 0.00 -0.04 0.00 -0.19
30 21.1744 0.00 0.05 0.00 -0.19
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.
408832 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.263 44.263 44.263 ecceobj 0.040 0.040 0.040 incobj 2.145 2.145 2.145 qmin 41.246 41.244 41.249 qmax 47.202 47.199 47.235 amean 44.152 44.152 44.152 amin 43.804 43.804 43.804 amax 44.507 44.514 44.506 emean 0.046 0.046 0.046 emin 0.030 0.031 0.030 emax 0.061 0.061 0.061 imean 2.352 2.352 2.352 imin 1.714 1.714 1.714 imax 2.997 2.997 2.998 excite_mean 0.062 0.062 0.062 fracstop 1.000 1.000 1.000 cjmean 3.099 3.099 3.099 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 191.3 191.4 191.3 kozaiamp 180.0 180.0 179.9