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: 13GF138
# Created Wed Dec 25 02:09:22 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 37 observations of 37
# Arc: 12.07y
# First observation: 2005/05/04
# Last observation: 2017/05/28
# Chi-squared of fit: 14.82 DOF: 68 RMS: 0.11
# Min/Max residuals: -0.26 0.29
# Exact a, adot, b, bdot, g, gdot:
1.531513E-05 2.204542E-02 -1.948267E-07 1.788093E-04 2.324378E-02 2.735114E-04
# Covariance matrix:
3.6641E-13 -7.5988E-14 3.8808E-16 -3.2639E-16 -3.5822E-14 -1.7227E-13
-7.5988E-14 4.1408E-14 -3.6423E-16 2.9984E-16 1.2516E-14 1.5989E-13
3.8808E-16 -3.6423E-16 3.1887E-13 -3.5975E-14 -7.8845E-17 -1.5865E-15
-3.2639E-16 2.9984E-16 -3.5975E-14 4.6251E-15 1.0322E-16 1.3032E-15
-3.5822E-14 1.2516E-14 -7.8845E-17 1.0322E-16 1.2713E-13 4.5198E-14
-1.7227E-13 1.5989E-13 -1.5865E-15 1.3032E-15 4.5198E-14 6.9568E-13
# lat0 lon0 xBary yBary zBary JD0
0.305985 -151.700123 -0.272802 0.005249 -0.967209 2453494.853023
# Heliocentric elements and errors
Epoch: 2453494.5000 = 2005/05/04
Mean Anomaly: 67.29049 +/- 0.109
Argument of Peri: 323.34666 +/- 0.116
Long of Asc Node: 175.76221 +/- 0.013
Inclination: 0.55103 +/- 0.000
Eccentricity: 0.02111764 +/- 0.0000
Semi-Major Axis: 44.33880337 +/- 0.0027
Time of Perihelion: 2433337.5145 +/- 32.6
Perihelion: 43.40247247 +/- 0.0033
Aphelion: 45.27513427 +/- 0.0033
Period (y) 295.2461 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.60590235 +/- 0.0006
Ecliptic Y -21.09588297 +/- 0.0003
Ecliptic Z 0.22977556 +/- 0.0000
Ecliptic XDOT 0.00120340 +/- 0.0000
Ecliptic YDOT -0.00230863 +/- 0.0000
Ecliptic ZDOT 0.00002129 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.99435937 +/- 0.0005
Geocenter to KBO 43.02229346 +/- 0.0007
# Hcoef: 7.24
The following table shows the complete astrometric record for 13GF138. 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 (13GF138) followed by the observatory code and reference code for the source of the astrometry.
2005 05 04.35228 13 45 36.21 -10 35 02.7 23.6r 13GF138 568 C~1XRa 2005 05 04.38654 13 45 36.07 -10 35 01.9 24.3r 13GF138 568 C~1XRa 2005 05 04.43052 13 45 35.88 -10 35 00.8 23.6r 13GF138 568 C~1XRa 2005 05 05.39728 13 45 31.81 -10 34 38.0 23.8r 13GF138 568 C~1XRa 2013 03 07.55778 14 28 13.972 -14 14 38.23 23.9r 13GF138 568 C~1XRa 2013 03 07.56275 14 28 13.941 -14 14 37.89 23.1r 13GF138 568 C~1XRa 2013 03 07.61473 14 28 13.808 -14 14 37.44 23.6r 13GF138 568 C~1XRa 2013 04 04.55875 14 26 41.575 -14 06 54.50 23.3r 13GF138 568 C~1XRa 2013 04 07.46275 14 26 29.714 -14 05 55.43 23.6r 13GF138 568 C~1XRa 2013 04 07.46759 14 26 29.685 -14 05 55.43 23.6r 13GF138 568 C~1XRa 2013 04 07.47260 14 26 29.670 -14 05 55.30 23.0r 13GF138 568 C~1XRa 2013 04 07.47750 14 26 29.639 -14 05 55.00 22.8r 13GF138 568 C~1XRa 2013 04 08.45133 14 26 25.600 -14 05 34.97 23.6r 13GF138 568 C~1XRa 2013 04 08.49654 14 26 25.398 -14 05 34.01 23.5r 13GF138 568 C~1XRa 2013 04 09.39790 14 26 21.640 -14 05 15.27 23.4r 13GF138 568 C~1XRa 2013 04 09.44107 14 26 21.460 -14 05 14.33 23.5r 13GF138 568 C~1XRa 2013 04 09.48468 14 26 21.265 -14 05 13.51 23.8r 13GF138 568 C~1XRa 2013 05 11.48618 14 23 59.461 -13 53 30.72 23.8r 13GF138 568 C~1XRa 2013 05 12.48847 14 23 55.071 -13 53 08.96 23.5r 13GF138 568 C~1XRa 2013 06 12.38358 14 21 57.929 -13 43 32.01 23.6r 13GF138 568 C~1XRa 2013 06 12.42921 14 21 57.809 -13 43 31.31 24.2r 13GF138 568 C~1XRa 2013 07 07.29286 14 21 04.680 -13 39 15.25 23.8r 13GF138 568 C~1XRa 2013 08 02.28256 14 21 02.500 -13 39 15.80 24.1r 13GF138 568 C~1XRa 2013 08 05.28429 14 21 06.002 -13 39 34.85 23.6r 13GF138 568 C~1XRa 2014 02 25.59592 14 33 26.198 -14 39 14.87 24.0r 13GF138 568 C~1XRa 2014 02 28.54389 14 33 21.465 -14 38 50.52 23.8r 13GF138 568 C~1XRa 2014 04 04.43513 14 31 37.722 -14 30 17.28 23.5r 13GF138 568 C~1XRa 2014 04 04.47439 14 31 37.566 -14 30 16.67 23.7r 13GF138 568 C~1XRa 2014 05 22.43425 14 28 08.339 -14 13 19.45 23.7r 13GF138 568 C~1XRa 2014 05 25.36555 14 27 56.368 -14 12 21.70 23.6r 13GF138 568 C~1XRa 2014 05 25.37028 14 27 56.355 -14 12 21.47 23.6r 13GF138 568 C~1XRa 2014 06 26.33823 14 26 14.390 -14 04 11.56 23.9r 13GF138 568 C~1XRa 2014 07 18.31323 14 25 45.879 -14 02 00.95 23.8r 13GF138 568 C~1XRa 2016 05 10.32654 14 38 51.315 -15 03 16.30 23.3r 13GF138 568 C~2KOG 2016 05 10.40239 14 38 50.970 -15 03 14.84 23.5r 13GF138 568 C~2KOG 2017 05 28.35383 14 42 32.385 -15 19 47.70 23.5r 13GF138 568 C~2KOG 2017 05 28.41896 14 42 32.115 -15 19 46.36 23.5r 13GF138 568 C~2KOG
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 0.08
2 0.0001 0.00 0.07 0.00 0.07
3 0.0002 0.00 0.06 0.00 0.13
4 0.0029 0.00 -0.00 0.00 0.06
5 7.8418 0.00 0.29 0.00 -0.26
6 7.8418 0.00 0.01 0.00 0.02
7 7.8419 0.00 -0.05 0.00 -0.17
8 7.9184 0.00 0.08 0.00 -0.06
9 7.9264 0.00 0.04 0.00 -0.05
10 7.9264 0.00 -0.09 0.00 -0.15
11 7.9264 0.00 0.00 0.00 -0.13
12 7.9264 0.00 -0.15 0.00 0.07
13 7.9291 0.00 -0.05 0.00 -0.03
14 7.9292 0.00 -0.20 0.00 -0.01
15 7.9317 0.00 -0.04 0.00 -0.05
16 7.9318 0.00 0.03 0.00 -0.01
17 7.9319 0.00 -0.09 0.00 -0.10
18 8.0195 0.00 0.03 0.00 -0.17
19 8.0223 0.00 -0.09 0.00 -0.06
20 8.1069 0.00 -0.04 0.00 0.04
21 8.1070 0.00 0.27 0.00 0.06
22 8.1751 0.00 -0.10 0.00 -0.14
23 8.2462 0.00 -0.14 0.00 0.03
24 8.2544 0.00 0.04 0.00 -0.18
25 8.8138 0.00 -0.06 0.00 0.09
26 8.8219 0.00 -0.08 0.00 0.09
27 8.9174 0.00 0.07 0.00 0.06
28 8.9175 0.00 0.12 0.00 -0.09
29 9.0488 0.00 0.02 0.00 0.01
30 9.0568 0.00 -0.17 0.00 -0.10
31 9.0569 0.00 -0.08 0.00 0.03
32 9.1444 0.00 0.16 0.00 0.10
33 9.2045 0.00 0.06 0.00 0.10
34 11.0170 0.00 -0.05 0.00 0.24
35 11.0172 0.00 -0.02 0.00 0.12
36 12.0657 0.00 0.11 0.00 0.11
37 12.0659 0.00 0.12 0.00 0.24
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.
13GF138 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.790 43.790 43.790 ecceobj 0.019 0.019 0.019 incobj 0.554 0.554 0.554 qmin 42.195 42.191 42.201 qmax 46.171 46.173 46.167 amean 44.105 44.105 44.105 amin 43.765 43.765 43.766 amax 44.451 44.450 44.452 emean 0.024 0.024 0.024 emin 0.007 0.007 0.007 emax 0.039 0.039 0.039 imean 1.828 1.828 1.829 imin 1.166 1.166 1.165 imax 2.392 2.392 2.392 excite_mean 0.040 0.040 0.040 fracstop 1.000 1.000 1.000 cjmean 3.101 3.101 3.101 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 187.2 187.3 187.1 kozaiamp 180.0 180.0 180.0