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: 17CO54 # Created Fri Nov 22 02:10:50 2024 # Orbit generated from Bernstein formalism # Fitting 39 observations of 39 # Arc: 2.29y # First observation: 2017/01/23 # Last observation: 2019/05/09 Preliminary a, adot, b, bdot, g, gdot: 0.000008 0.025965 0.000007 0.003748 0.025540 0.000000 # Chi-squared of fit: 20.88 DOF: 72 RMS: 0.13 # Min/Max residuals: -0.33 0.28 # Exact a, adot, b, bdot, g, gdot: 1.771900E-05 2.599707E-02 3.416713E-06 3.792328E-03 2.548716E-02 -1.666175E-03 # Covariance matrix: 7.0684E-14 5.5897E-14 1.3795E-16 1.2940E-14 1.1022E-13 1.9491E-12 5.5897E-14 9.6443E-13 -1.5468E-14 2.5197E-13 6.0987E-13 3.0014E-11 1.3795E-16 -1.5468E-14 4.9096E-14 -4.0717E-14 -4.5659E-15 -7.1047E-13 1.2940E-14 2.5197E-13 -4.0717E-14 1.9587E-13 1.2978E-13 1.0120E-11 1.1022E-13 6.0987E-13 -4.5659E-15 1.2978E-13 6.0197E-13 1.6947E-11 1.9491E-12 3.0014E-11 -7.1047E-13 1.0120E-11 1.6947E-11 1.1665E-09 # lat0 lon0 xBary yBary zBary JD0 -10.764506 151.424340 0.469142 -0.161786 -0.851984 2457776.866521 # Heliocentric elements and errors Epoch: 2457770.5000 = 2017/01/17 Mean Anomaly: 323.29526 +/- 0.364 Argument of Peri: 352.93575 +/- 0.504 Long of Asc Node: 202.62949 +/- 0.003 Inclination: 13.29627 +/- 0.000 Eccentricity: 0.11533106 +/- 0.0010 Semi-Major Axis: 43.91238133 +/- 0.0098 Time of Perihelion: 2468607.2373 +/- 107.4 Perihelion: 38.84791978 +/- 0.0436 Aphelion: 48.97684289 +/- 0.0441 Period (y) 290.9971 +/- 0.10 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -34.39056058 +/- 0.0010 Ecliptic Y 19.25892276 +/- 0.0006 Ecliptic Z -7.32801500 +/- 0.0002 Ecliptic XDOT -0.00124534 +/- 0.0000 Ecliptic YDOT -0.00250686 +/- 0.0000 Ecliptic ZDOT 0.00043358 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.09135277 +/- 0.0009 Geocenter to KBO 39.23544558 +/- 0.0012 # Hcoef: 8.68
The following table shows the complete astrometric record for 17CO54. 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 (17CO54) followed by the observatory code and reference code for the source of the astrometry.
2017 01 23.36572 09 58 32.80 +00 53 28.7 24.6r 17CO54 T09 C~7xTt 2017 01 23.41253 09 58 32.62 +00 53 29.7 24.8r 17CO54 T09 C~7xTt 2017 01 23.42951 09 58 32.54 +00 53 29.7 24.9r 17CO54 T09 C~7xTt 2017 01 23.48266 09 58 32.32 +00 53 30.9 24.5i 17CO54 T09 C~7xTt 2017 01 23.51704 09 58 32.16 +00 53 31.4 24.6i 17CO54 T09 C~7xTt 2017 01 23.52648 09 58 32.13 +00 53 31.5 24.2i 17CO54 T09 C~7xTt 2017 01 23.57809 09 58 31.90 +00 53 32.7 24.4i 17CO54 T09 C~7xTt 2017 01 30.41352 09 58 01.77 +00 55 44.2 24.6i 17CO54 T09 C~7xTt 2017 01 30.43553 09 58 01.68 +00 55 44.6 25.0i 17CO54 T09 C~7xTt 2017 01 30.45764 09 58 01.57 +00 55 44.9 24.7i 17CO54 T09 C~7xTt 2017 01 30.50184 09 58 01.36 +00 55 45.9 24.5z 17CO54 T09 C~7xTt 2017 01 30.52778 09 58 01.25 +00 55 46.6 24.7z 17CO54 T09 C~7xTt 2017 01 30.56478 09 58 01.04 +00 55 47.3 24.6z 17CO54 T09 C~7xTt 2017 01 30.61243 09 58 00.84 +00 55 48.4 24.2z 17CO54 T09 C~7xTt 2017 02 02.56306 09 57 47.34 +00 56 52.4 24.0i 17CO54 T09 C~7xTt 2017 02 02.57136 09 57 47.30 +00 56 52.4 24.2i 17CO54 T09 C~7xTt 2017 02 02.58245 09 57 47.25 +00 56 53.0 24.0i 17CO54 T09 C~7xTt 2017 02 02.58800 09 57 47.23 +00 56 52.8 24.3i 17CO54 T09 C~7xTt 2017 02 21.32404 09 56 18.45 +01 04 59.1 24.9z 17CO54 T09 C~7xTt 2017 02 21.37516 09 56 18.19 +01 05 00.8 24.2z 17CO54 T09 C~7xTt 2017 02 21.40083 09 56 18.07 +01 05 01.5 24.8z 17CO54 T09 C~7xTt 2017 02 21.42282 09 56 17.98 +01 05 02.0 24.1z 17CO54 T09 C~7xTt 2017 02 23.33356 09 56 08.89 +01 05 58.2 25.5g 17CO54 T09 C~7xTt 2017 02 23.46720 09 56 08.25 +01 06 01.9 24.9r 17CO54 T09 C~7xTt 2017 02 23.48087 09 56 08.20 +01 06 02.3 24.6r 17CO54 T09 C~7xTt 2017 02 23.49450 09 56 08.12 +01 06 02.8 25.5r 17CO54 T09 C~7xTt 2017 02 23.51193 09 56 08.05 +01 06 03.3 24.8r 17CO54 T09 C~7xTt 2017 03 04.29255 09 55 27.28 +01 10 31.1 23.9z 17CO54 T09 C~83Ex 2017 03 04.34360 09 55 27.04 +01 10 32.8 23.9z 17CO54 T09 C~83Ex 2017 03 04.45601 09 55 26.52 +01 10 36.2 24.0i 17CO54 T09 C~83Ex 2017 03 04.49952 09 55 26.33 +01 10 37.5 24.1i 17CO54 T09 C~83Ex 2018 01 17.480642 10 04 51.82 +00 32 44.9 17CO54 T09 C~83Ex 2018 01 17.510272 10 04 51.70 +00 32 45.3 17CO54 T09 C~83Ex 2018 01 17.572223 10 04 51.46 +00 32 46.2 17CO54 T09 C~83Ex 2018 04 13.358265 09 58 58.20 +01 12 13.5 17CO54 T09 C~83Ex 2018 04 13.369037 09 58 58.17 +01 12 13.7 17CO54 T09 C~83Ex 2018 04 13.401360 09 58 58.09 +01 12 14.7 17CO54 T09 C~83Ex 2019 05 09.284211 10 04 16.96 +01 03 43.4 17CO54 T09 C~83Ex 2019 05 09.378507 10 04 16.93 +01 03 45.2 17CO54 T09 C~83Ex
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 -0.33 0.00 -0.22
2 0.0001 -2.88 -0.07 -0.01 0.07
3 0.0002 -4.00 -0.05 -0.43 -0.24
4 0.0003 -7.51 0.01 -0.45 0.08
5 0.0004 -9.94 -0.09 -0.82 -0.07
6 0.0004 -10.39 0.09 -0.89 -0.07
7 0.0006 -14.05 -0.08 -0.97 0.18
8 0.0193 -483.41 0.09 -35.62 0.13
9 0.0194 -484.81 0.27 -35.72 0.14
10 0.0194 -486.46 0.21 -36.01 -0.06
11 0.0195 -489.76 0.11 -36.18 -0.02
12 0.0196 -491.55 0.19 -36.10 0.18
13 0.0197 -494.75 -0.33 -36.54 -0.10
14 0.0198 -497.94 -0.09 -36.56 0.10
15 0.0279 -710.02 -0.03 -47.32 0.12
16 0.0279 -710.58 0.02 -47.53 -0.06
17 0.0280 -711.49 -0.08 -47.23 0.28
18 0.0280 -711.70 0.12 -47.52 0.01
19 0.0793 -2129.26 0.15 -56.89 -0.17
20 0.0794 -2133.51 -0.10 -56.65 -0.04
21 0.0795 -2135.44 -0.03 -56.63 -0.06
22 0.0796 -2136.88 0.25 -56.63 -0.10
23 0.0848 -2284.27 -0.26 -51.57 -0.03
24 0.0852 -2294.55 -0.12 -51.46 -0.24
25 0.0852 -2295.40 0.11 -51.34 -0.16
26 0.0852 -2296.70 -0.13 -51.29 -0.15
27 0.0853 -2297.85 0.07 -51.19 -0.09
28 0.1093 -2964.42 0.04 -13.73 0.11
29 0.1095 -2968.38 -0.06 -13.40 0.19
30 0.1098 -2976.88 -0.03 -12.93 0.08
31 0.1099 -2980.00 0.14 -12.71 0.07
32 0.9832 5762.54 0.01 821.95 0.05
33 0.9833 5760.71 -0.01 821.70 0.03
34 0.9835 5757.02 0.07 821.28 0.10
35 1.2183 -36.05 0.03 1187.02 0.07
36 1.2184 -36.54 0.00 1187.05 -0.05
37 1.2184 -38.02 -0.07 1187.57 0.00
38 2.2886 4622.13 0.06 2380.72 -0.01
39 2.2889 4621.08 -0.07 2382.25 -0.07
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.
17CO54 quality flag:3 Type: 7:4EEE 7:4EEE 7:4EEE axisobj 43.700 43.714 43.687 ecceobj 0.108 0.110 0.107 incobj 13.328 13.328 13.327 qmin 32.874 32.535 32.898 qmax 55.050 55.412 55.063 amean 43.726 43.726 43.726 amin 43.320 43.282 43.325 amax 44.194 44.218 44.201 emean 0.190 0.210 0.186 emin 0.104 0.106 0.103 emax 0.247 0.255 0.247 imean 10.792 9.273 10.947 imin 7.521 6.552 7.570 imax 13.581 13.577 13.585 excite_mean 0.271 0.270 0.270 fracstop 1.000 1.000 1.000 cjmean 3.010 3.010 3.010 libcent 0 187.3 191.2 188.0 libamp 0 63.0 67.0 66.2 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 249.3 287.0 247.7 kozaiamp 107.8 81.0 107.6