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: 118698
# Created Sun Dec 22 02:06:52 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 55 observations of 55
# Arc: 23.04y
# First observation: 2000/07/28
# Last observation: 2023/08/14
# Chi-squared of fit: 173.85 DOF: 104 RMS: 0.31
# Min/Max residuals: -0.70 1.14
# Exact a, adot, b, bdot, g, gdot:
1.588561E-05 2.632825E-02 3.281768E-06 5.212263E-03 2.612671E-02 -5.957276E-03
# 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
1.007516 -70.397359 -0.269568 0.017035 -0.978943 2451753.681573
# Heliocentric elements and errors
Epoch: 2451754.5000 = 2000/07/29
Mean Anomaly: 307.14220 +/- 0.000
Argument of Peri: 82.95063 +/- 0.000
Long of Asc Node: 285.05413 +/- 0.000
Inclination: 11.23558 +/- 0.000
Eccentricity: 0.23375121 +/- 0.0000
Semi-Major Axis: 43.55597241 +/- 0.0000
Time of Perihelion: 2467170.6731 +/- 0.0
Perihelion: 33.37471097 +/- 0.0000
Aphelion: 53.73723386 +/- 0.0000
Period (y) 287.4616 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 13.42791376 +/- 0.0000
Ecliptic Y -36.87862548 +/- 0.0000
Ecliptic Z 0.67313655 +/- 0.0000
Ecliptic XDOT 0.00237933 +/- 0.0000
Ecliptic YDOT 0.00152827 +/- 0.0000
Ecliptic ZDOT 0.00053529 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.25309664 +/- 0.0000
Geocenter to KBO 38.27519360 +/- 0.0000
# Hcoef: 8.25
The following table shows the complete astrometric record for 118698. 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 (118698) followed by the observatory code and reference code for the source of the astrometry.
2000 07 28.18083 19 24 14.21 -21 00 36.3 23.9R 118698 309 Cb7916 2000 07 28.22055 19 24 14.00 -21 00 36.5 118698 309 Cb7916 2000 07 28.25960 19 24 13.80 -21 00 36.8 23.8R 118698 309 Cb7916 2000 07 29.07469 19 24 09.61 -21 00 43.1 23.8R 118698 309 Cb7916 2000 07 29.18657 19 24 09.03 -21 00 44.1 23.6R 118698 309 Cb7916 2000 07 29.22275 19 24 08.84 -21 00 44.4 23.7R 118698 309 Cb7916 2000 08 03.05532 19 23 44.41 -21 01 21.7 24.0R 118698 809 Cb7916 2000 08 03.09550 19 23 44.22 -21 01 22.4 118698 809 Cb7916 2000 08 03.11642 19 23 44.12 -21 01 22.4 118698 809 Cb7916 2000 08 07.02778 19 23 25.05 -21 01 51.4 23.6R 118698 809 Cb9203 2000 08 07.03376 19 23 25.03 -21 01 51.7 23.8R 118698 809 Cb9203 2000 08 07.05300 19 23 24.95 -21 01 51.8 24.2R 118698 809 Cb9203 2000 08 08.03261 19 23 20.28 -21 01 59.2 24.0R 118698 809 Cb9203 2000 08 08.04453 19 23 20.23 -21 01 59.2 24.2R 118698 809 Cb9203 2000 08 08.05646 19 23 20.17 -21 01 59.3 23.8R 118698 809 Cb9203 2000 09 23.22810 19 21 00.19 -21 05 16.4 23.7R 118698 568 Cb9203 2000 09 23.33348 19 21 00.06 -21 05 16.4 118698 568 Cb9203 2000 09 24.22247 19 20 59.33 -21 05 16.7 23.9R 118698 568 Cb9203 2001 05 29.37243 19 35 22.99 -20 21 51.0 23.4R 118698 695 Cd3308 2001 05 29.42104 19 35 22.81 -20 21 51.2 118698 695 Cd3308 2001 07 24.29957 19 30 48.93 -20 28 44.2 118698 568 Cd3308 2001 07 24.33033 19 30 48.76 -20 28 44.4 118698 568 Cd3308 2001 07 25.30196 19 30 43.61 -20 28 53.2 118698 568 Cd3308 2001 07 25.32751 19 30 43.47 -20 28 53.4 118698 568 Cd3308 2002 07 05.32301 19 38 47.40 -19 53 07.0 23.4R 118698 695 Cf8835 2002 07 05.36408 19 38 47.15 -19 53 07.3 23.6R 118698 695 Cf8835 2002 07 05.41774 19 38 46.84 -19 53 08.0 118698 695 Cf8835 2002 07 06.29244 19 38 42.21 -19 53 15.7 118698 695 Cf8835 2002 07 06.31943 19 38 42.03 -19 53 15.4 118698 695 Cf8835 2002 07 06.34566 19 38 41.90 -19 53 16.2 118698 695 Cf8835 2004 10 12.14623 19 45 28.50 -18 57 29.6 24.0R 118698 309 Cn8269 2004 10 12.99959 19 45 28.97 -18 57 28.9 24.2R 118698 309 Cn8269 2006 06 13.39938 20 05 46.67 -17 26 47.5 23.4R 118698 250 S~06HA 2006 06 13.40378 20 05 46.65 -17 26 47.5 118698 250 S~06HA 2006 06 13.40818 20 05 46.63 -17 26 47.5 118698 250 S~06HA 2006 06 13.41258 20 05 46.61 -17 26 47.6 118698 250 S~06HA 2016 07 14.544085 21 08 28.796 -10 13 13.66 23.8G 118698 F51 C~42B2 2016 08 03.404713 21 06 45.804 -10 19 02.80 23.4G 118698 F51 C~42B3 2017 07 26.490686 21 14 10.583 -09 26 43.04 23.7G 118698 F51 C~42B3 2017 09 13.359360 21 10 03.110 -09 44 46.79 23.5G 118698 F51 C~42B3 2018 06 18.558063 21 23 34.445 -08 29 22.82 23.4G 118698 F51 C~42B3 2018 06 18.580150 21 23 34.377 -08 29 22.82 23.5G 118698 F51 C~42B3 2018 06 18.591182 21 23 34.347 -08 29 22.94 24.1G 118698 F51 C~42B3 2018 08 05.399876 21 20 03.346 -08 39 12.82 23.2G 118698 F51 C~42B3 2018 08 06.444139 21 19 57.748 -08 39 34.42 23.9G 118698 F51 C~42B3 2018 08 13.467535 21 19 19.977 -08 42 10.13 23.2G 118698 F51 C~42B3 2019 09 04.152830 21 24 15.085 -07 59 21.45 24.0G 118698 G37 C~3WS6 2019 09 04.233560 21 24 14.678 -07 59 23.65 118698 G37 C~3WS6 2019 09 04.317650 21 24 14.271 -07 59 25.74 118698 G37 C~3WS6 2021 09 12.131510 21 37 13.107 -06 17 36.15 23.8G 118698 G37 C~57g3 2021 09 12.190420 21 37 12.825 -06 17 37.96 118698 G37 C~57g3 2021 09 12.247780 21 37 12.559 -06 17 39.41 118698 G37 C~57g3 2023 08 14.218440 21 53 33.155 -04 15 30.19 23.5G 118698 G37 C~78W9 2023 08 14.266030 21 53 32.915 -04 15 31.38 118698 G37 C~78W9 2023 08 14.313870 21 53 32.656 -04 15 32.44 118698 G37 C~78W9
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 0.01 0.00 -0.02
2 0.0001 0.00 0.00 0.00 0.09
3 0.0002 0.00 0.08 0.00 0.09
4 0.0024 0.00 0.08 0.00 0.25
5 0.0028 0.00 0.17 0.00 0.14
6 0.0029 0.00 0.16 0.00 0.12
7 0.0161 0.00 -0.01 0.00 0.29
8 0.0162 0.00 0.18 0.00 -0.10
9 0.0163 0.00 0.26 0.00 0.06
10 0.0270 0.00 -0.12 0.00 0.24
11 0.0270 0.00 0.01 0.00 -0.01
12 0.0270 0.00 0.22 0.00 0.03
13 0.0297 0.00 -0.02 0.00 -0.25
14 0.0297 0.00 0.09 0.00 -0.16
15 0.0298 0.00 0.05 0.00 -0.17
16 0.1562 0.00 0.45 0.00 -0.53
17 0.1565 0.00 0.08 0.00 -0.50
18 0.1589 0.00 0.36 0.00 -0.50
19 0.8356 0.00 0.04 0.00 -0.20
20 0.8357 0.00 -0.01 0.00 -0.21
21 0.9887 0.00 0.05 0.00 -0.29
22 0.9888 0.00 -0.01 0.00 -0.21
23 0.9914 0.00 0.12 0.00 -0.28
24 0.9915 0.00 0.08 0.00 -0.24
25 1.9360 0.00 0.06 0.00 -0.43
26 1.9362 0.00 -0.36 0.00 -0.36
27 1.9363 0.00 -0.65 0.00 -0.57
28 1.9387 0.00 -0.20 0.00 -0.20
29 1.9388 0.00 -0.70 0.00 0.35
30 1.9388 0.00 -0.51 0.00 -0.20
31 4.2080 0.00 0.01 0.00 0.12
32 4.2103 0.00 -0.31 0.00 0.19
33 5.8760 0.00 0.31 0.00 1.09
34 5.8760 0.00 0.28 0.00 1.11
35 5.8761 0.00 0.25 0.00 1.14
36 5.8761 0.00 0.22 0.00 1.07
37 15.9627 0.00 -0.21 0.00 0.03
38 16.0170 0.00 -0.06 0.00 0.24
39 16.9947 0.00 -0.40 0.00 0.31
40 17.1285 0.00 0.01 0.00 -0.46
41 17.8902 0.00 0.03 0.00 -0.10
42 17.8902 0.00 -0.01 0.00 -0.07
43 17.8902 0.00 0.03 0.00 -0.18
44 18.0211 0.00 0.11 0.00 -0.46
45 18.0240 0.00 0.12 0.00 0.10
46 18.0432 0.00 -0.01 0.00 -0.28
47 19.1019 0.00 0.01 0.00 -0.02
48 19.1021 0.00 -0.09 0.00 -0.18
49 19.1024 0.00 0.05 0.00 -0.15
50 21.1251 0.00 0.10 0.00 0.04
51 21.1253 0.00 0.03 0.00 -0.18
52 21.1254 0.00 0.09 0.00 -0.08
53 23.0446 0.00 -0.11 0.00 0.06
54 23.0447 0.00 0.16 0.00 0.02
55 23.0449 0.00 0.16 0.00 0.11
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.
118698 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE axisobj 43.643 43.642 43.643 ecceobj 0.235 0.235 0.235 incobj 11.226 11.226 11.226 qmin 31.288 31.174 31.203 qmax 56.814 56.891 56.942 amean 43.726 43.726 43.726 amin 43.265 43.250 43.264 amax 44.285 44.265 44.283 emean 0.230 0.231 0.230 emin 0.159 0.161 0.159 emax 0.284 0.286 0.286 imean 12.640 12.559 12.574 imin 9.809 9.560 9.406 imax 15.527 15.527 15.542 excite_mean 0.321 0.321 0.321 fracstop 1.000 1.000 1.000 cjmean 2.974 2.974 2.974 libcent 0 181.6 182.8 180.3 libamp 0 105.1 106.3 102.6 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 135.1 125.8 122.7 kozaiamp 86.9 84.2 82.7