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: 03FD128
# Created Sat Apr 20 01:11:18 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 25 observations of 25
# Arc: 19.99y
# First observation: 2002/03/05
# Last observation: 2022/03/02
# Chi-squared of fit: 95.88 DOF: 44 RMS: 0.35
# Min/Max residuals: -0.68 0.86
# Exact a, adot, b, bdot, g, gdot:
1.625758E-05 2.819182E-02 1.577388E-06 2.525448E-03 2.733987E-02 3.622271E-04
# Covariance matrix:
2.3479E-13 -4.0921E-14 5.6447E-15 -2.5873E-15 1.9746E-13 -4.7869E-14
-4.0921E-14 1.5858E-14 -2.3298E-15 1.2811E-15 -2.4185E-14 2.4291E-14
5.6447E-15 -2.3298E-15 1.1390E-13 -7.7731E-15 5.0933E-15 -3.7428E-15
-2.5873E-15 1.2811E-15 -7.7731E-15 1.0868E-15 -1.2106E-15 2.1308E-15
1.9746E-13 -2.4185E-14 5.0933E-15 -1.2106E-15 4.8030E-13 -1.9293E-14
-4.7869E-14 2.4291E-14 -3.7428E-15 2.1308E-15 -1.9293E-14 4.0571E-14
# lat0 lon0 xBary yBary zBary JD0
1.427113 164.282140 -0.008298 0.024611 -0.991012 2452338.729200
# Heliocentric elements and errors
Epoch: 2452338.5000 = 2002/03/05
Mean Anomaly: 33.71834 +/- 0.089
Argument of Peri: 339.70842 +/- 0.094
Long of Asc Node: 149.12605 +/- 0.000
Inclination: 5.29893 +/- 0.000
Eccentricity: 0.02742527 +/- 0.0001
Semi-Major Axis: 38.43572361 +/- 0.0041
Time of Perihelion: 2444186.4901 +/- 21.4
Perihelion: 37.38161335 +/- 0.0047
Aphelion: 39.48983387 +/- 0.0049
Period (y) 238.2927 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -36.15365046 +/- 0.0009
Ecliptic Y 10.17108964 +/- 0.0003
Ecliptic Z 0.91101661 +/- 0.0000
Ecliptic XDOT -0.00080209 +/- 0.0000
Ecliptic YDOT -0.00271047 +/- 0.0000
Ecliptic ZDOT 0.00025394 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.56816150 +/- 0.0009
Geocenter to KBO 36.57663748 +/- 0.0009
# Hcoef: 7.45
The following table shows the complete astrometric record for 03FD128. 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 (03FD128) followed by the observatory code and reference code for the source of the astrometry.
2002 03 05.228457 11 04 18.41 +07 30 10.1 22.7V 03FD128 645 C~2Jx8 2002 03 05.229286 11 04 18.41 +07 30 10.1 23.3V 03FD128 645 C~2Jx8 2002 03 05.231774 11 04 18.42 +07 30 10.1 22.8V 03FD128 645 C~2Jx8 2003 03 31.30333 11 08 27.19 +07 14 05.2 22.7R 03FD128 695 Ch8428 2003 03 31.41504 11 08 26.65 +07 14 08.4 03FD128 695 Ch8428 2003 04 01.24512 11 08 22.97 +07 14 31.8 03FD128 695 Ch8428 2003 04 20.99538 11 07 05.87 +07 22 32.0 21.5R 03FD128 304 Ch8428 2003 04 21.05537 11 07 05.67 +07 22 33.3 03FD128 304 Ch8428 2003 05 31.32412 11 06 03.91 +07 28 19.1 23.1R 03FD128 568 Ci1570 2003 06 01.30980 11 06 04.30 +07 28 15.5 03FD128 568 Ci1570 2003 06 02.27772 11 06 04.78 +07 28 11.3 03FD128 568 Ci1570 2004 02 22.37938 11 17 41.82 +06 24 19.7 23.3R 03FD128 695 Cq7030 2004 02 22.42094 11 17 41.59 +06 24 21.0 03FD128 695 Cq7030 2006 02 23.28322 11 29 57.91 +05 24 27.5 22.9R 03FD128 304 Cq7030 2006 02 23.30282 11 29 57.82 +05 24 27.9 03FD128 304 Cq7030 2013 03 14.28267 12 11 12.73 +01 58 29.1 22.9R 03FD128 695 C~0ud4 2013 03 14.39217 12 11 12.18 +01 58 32.5 03FD128 695 C~0ud4 2013 03 14.45273 12 11 11.88 +01 58 34.7 03FD128 695 C~0ud4 2017 02 23.56555 12 36 49.72 -00 17 04.0 23.4r 03FD128 T09 C~7bAR 2017 02 23.57615 12 36 49.68 -00 17 03.7 23.5r 03FD128 T09 C~7bAR 2017 02 23.61010 12 36 49.56 -00 17 02.5 23.6r 03FD128 T09 C~7bAR 2017 02 23.63983 12 36 49.42 -00 17 01.8 23.5r 03FD128 T09 C~7bAR 2022 03 02.432050 13 06 27.444 -02 48 55.52 23.3G 03FD128 G37 C~5RkS 2022 03 02.473250 13 06 27.282 -02 48 54.16 03FD128 G37 C~5RkS 2022 03 02.513090 13 06 27.166 -02 48 52.18 03FD128 G37 C~5RkS
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 -0.00 0.00 -0.03
2 0.0000 0.00 0.06 0.00 -0.05
3 0.0000 0.00 0.40 0.00 -0.14
4 1.0707 0.00 0.86 0.00 0.12
5 1.0710 0.00 0.40 0.00 0.14
6 1.0733 0.00 0.70 0.00 0.00
7 1.1274 0.00 -0.14 0.00 -0.18
8 1.1275 0.00 -0.13 0.00 -0.08
9 1.2378 0.00 -0.63 0.00 -0.49
10 1.2405 0.00 -0.68 0.00 -0.41
11 1.2431 0.00 -0.68 0.00 -0.42
12 1.9689 0.00 0.08 0.00 0.33
13 1.9690 0.00 -0.33 0.00 0.28
14 3.9728 0.00 -0.32 0.00 0.54
15 3.9728 0.00 -0.26 0.00 0.29
16 11.0255 0.00 0.43 0.00 0.30
17 11.0258 0.00 0.28 0.00 0.01
18 11.0259 0.00 0.26 0.00 0.17
19 14.9742 0.00 -0.07 0.00 -0.03
20 14.9743 0.00 -0.05 0.00 -0.04
21 14.9744 0.00 0.14 0.00 0.17
22 14.9744 0.00 -0.21 0.00 -0.00
23 19.9923 0.00 -0.22 0.00 -0.57
24 19.9925 0.00 -0.28 0.00 -0.39
25 19.9926 0.00 0.27 0.00 0.46
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.
03FD128 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 38.184 38.185 38.184 ecceobj 0.022 0.022 0.022 incobj 5.312 5.312 5.312 qmin 36.597 36.574 36.599 qmax 40.277 40.280 40.274 amean 38.344 38.344 38.344 amin 38.063 38.065 38.064 amax 38.631 38.643 38.637 emean 0.020 0.020 0.020 emin 0.000 0.000 0.000 emax 0.043 0.043 0.043 imean 3.291 3.291 3.291 imin 1.664 1.664 1.664 imax 4.794 4.793 4.795 excite_mean 0.062 0.062 0.062 fracstop 1.000 1.000 1.000 cjmean 3.038 3.038 3.038 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 177.3 177.2 177.4 kozaiamp 180.0 180.0 180.0