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: 17CL54 # Created Sun Nov 24 02:10:47 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 33 observations of 33 # Arc: 9.20y # First observation: 2012/01/06 # Last observation: 2021/03/21 # Chi-squared of fit: 20.78 DOF: 60 RMS: 0.14 # Min/Max residuals: -0.31 0.25 # Exact a, adot, b, bdot, g, gdot: 2.195739E-05 3.815337E-02 1.737118E-06 4.720426E-03 2.771848E-02 -5.063639E-03 # Covariance matrix: 3.8406E-13 -1.1281E-13 9.3473E-15 -7.9433E-15 3.1457E-14 -2.2217E-13 -1.1281E-13 7.1186E-14 -9.6804E-15 7.8366E-15 3.3465E-14 2.1448E-13 9.3473E-15 -9.6804E-15 2.9657E-13 -5.4632E-14 -5.9431E-15 -3.4552E-14 -7.9433E-15 7.8366E-15 -5.4632E-14 1.2259E-14 4.0035E-15 2.8090E-14 3.1457E-14 3.3465E-14 -5.9431E-15 4.0035E-15 1.5741E-13 9.9323E-14 -2.2217E-13 2.1448E-13 -3.4552E-14 2.8090E-14 9.9323E-14 7.7030E-13 # lat0 lon0 xBary yBary zBary JD0 -13.525797 140.404890 0.565101 -0.188020 -0.781863 2455932.715447 # Heliocentric elements and errors Epoch: 2455932.5000 = 2012/01/06 Mean Anomaly: 359.04178 +/- 0.001 Argument of Peri: 315.35239 +/- 0.003 Long of Asc Node: 201.55592 +/- 0.000 Inclination: 14.90522 +/- 0.000 Eccentricity: 0.83002311 +/- 0.0001 Semi-Major Axis: 211.93766295 +/- 0.0937 Time of Perihelion: 2458932.1774 +/- 745.7 Perihelion: 36.02450438 +/- 0.0222 Aphelion: 387.85082151 +/- 0.1722 Period (y) 3085.4635 +/- 2.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.28552328 +/- 0.0004 Ecliptic Y 23.30497434 +/- 0.0003 Ecliptic Z -8.43780255 +/- 0.0001 Ecliptic XDOT -0.00211554 +/- 0.0000 Ecliptic YDOT -0.00313974 +/- 0.0000 Ecliptic ZDOT 0.00057038 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.86226436 +/- 0.0004 Geocenter to KBO 36.07714382 +/- 0.0005 # Hcoef: 7.61
The following table shows the complete astrometric record for 17CL54. 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 (17CL54) followed by the observatory code and reference code for the source of the astrometry.
2012 01 06.214681 09 14 12.91 +01 49 43.3 17CL54 309 C~81Bq 2012 01 06.221215 09 14 12.88 +01 49 43.1 17CL54 309 C~81Bq 2012 01 06.227740 09 14 12.85 +01 49 43.3 17CL54 309 C~81Bq 2013 04 02.025302 09 16 49.70 +02 02 36.1 17CL54 W84 C~81Bq 2013 04 03.053027 09 16 47.46 +02 03 08.9 17CL54 W84 C~81Bq 2016 01 14.300633 09 48 58.567 +00 08 56.26 23.2r 17CL54 W84 C~8HKI 2017 01 26.54133 09 57 02.85 -00 13 56.4 22.9z 17CL54 T09 C~7xTt 2017 01 26.54471 09 57 02.85 -00 13 56.1 23.1z 17CL54 T09 C~7xTt 2017 01 26.55620 09 57 02.81 -00 13 55.9 23.0z 17CL54 T09 C~7xTt 2017 01 26.56693 09 57 02.75 -00 13 55.7 22.9z 17CL54 T09 C~7xTt 2017 01 26.59916 09 57 02.61 -00 13 55.2 22.9z 17CL54 T09 C~7xTt 2017 01 26.60996 09 57 02.56 -00 13 54.7 22.8z 17CL54 T09 C~7xTt 2017 02 02.37981 09 56 31.25 -00 11 29.6 23.6r 17CL54 T09 C~7xTt 2017 02 02.39743 09 56 31.15 -00 11 29.6 23.5r 17CL54 T09 C~7xTt 2017 02 02.41063 09 56 31.09 -00 11 29.1 23.2r 17CL54 T09 C~7xTt 2017 02 02.42609 09 56 31.03 -00 11 28.6 23.3r 17CL54 T09 C~7xTt 2017 02 02.56306 09 56 30.36 -00 11 25.5 22.8i 17CL54 T09 C~7xTt 2017 03 06.37764 09 53 57.01 +00 04 28.8 22.8i 17CL54 T09 C~7xTt 2017 03 06.44451 09 53 56.70 +00 04 30.8 22.9i 17CL54 T09 C~7xTt 2017 03 06.44986 09 53 56.69 +00 04 31.3 22.9i 17CL54 T09 C~7xTt 2017 03 06.45523 09 53 56.65 +00 04 31.3 22.9i 17CL54 T09 C~7xTt 2017 03 06.46066 09 53 56.64 +00 04 31.5 22.8i 17CL54 T09 C~7xTt 2017 04 27.32671 09 51 28.71 +00 33 15.2 23.0i 17CL54 T09 C~7xTt 2017 04 27.33527 09 51 28.71 +00 33 15.2 23.0i 17CL54 T09 C~7xTt 2017 04 27.33816 09 51 28.71 +00 33 15.5 23.1i 17CL54 T09 C~7xTt 2017 04 27.34103 09 51 28.68 +00 33 15.4 23.1i 17CL54 T09 C~7xTt 2018 01 17.45108 10 06 43.69 -00 42 52.0 22.8i 17CL54 T09 C~81Bq 2018 01 17.47263 10 06 43.60 -00 42 51.8 22.9i 17CL54 T09 C~81Bq 2018 01 17.52919 10 06 43.39 -00 42 50.8 23.0i 17CL54 T09 C~81Bq 2018 01 17.56419 10 06 43.23 -00 42 50.3 22.9i 17CL54 T09 C~81Bq 2018 01 17.56687 10 06 43.24 -00 42 50.3 22.9i 17CL54 T09 C~81Bq 2018 01 17.59100 10 06 43.14 -00 42 49.8 22.9i 17CL54 T09 C~81Bq 2021 03 21.150401 10 29 07.83 -01 32 10.6 17CL54 W84 C~81Bq
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 0.02 0.00 0.20
2 0.0000 0.00 -0.02 0.00 -0.05
3 0.0000 0.00 -0.07 0.00 0.09
4 1.2370 0.00 0.11 0.00 -0.31
5 1.2398 0.00 -0.09 0.00 -0.05
6 4.0221 0.00 0.07 0.00 -0.19
7 5.0577 0.00 -0.17 0.00 -0.13
8 5.0577 0.00 0.06 0.00 0.10
9 5.0577 0.00 0.25 0.00 0.08
10 5.0578 0.00 0.09 0.00 0.07
11 5.0579 0.00 0.21 0.00 -0.06
12 5.0579 0.00 0.20 0.00 0.23
13 5.0764 0.00 0.13 0.00 0.18
14 5.0765 0.00 -0.10 0.00 -0.23
15 5.0765 0.00 -0.04 0.00 -0.04
16 5.0766 0.00 0.18 0.00 0.10
17 5.0769 0.00 0.06 0.00 0.00
18 5.1640 0.00 -0.22 0.00 0.17
19 5.1642 0.00 -0.20 0.00 -0.15
20 5.1642 0.00 0.02 0.00 0.17
21 5.1642 0.00 -0.21 0.00 -0.02
22 5.1643 0.00 0.02 0.00 -0.01
23 5.3063 0.00 0.01 0.00 0.07
24 5.3063 0.00 0.10 0.00 -0.16
25 5.3063 0.00 0.13 0.00 0.07
26 5.3063 0.00 -0.29 0.00 -0.11
27 6.0321 0.00 -0.11 0.00 -0.10
28 6.0322 0.00 -0.18 0.00 -0.19
29 6.0323 0.00 0.05 0.00 0.06
30 6.0324 0.00 -0.25 0.00 0.09
31 6.0324 0.00 0.06 0.00 0.06
32 6.0325 0.00 0.00 0.00 0.24
33 9.2045 0.00 0.08 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.
17CL54 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 212.005 211.998 212.012 ecceobj 0.830 0.830 0.830 incobj 14.897 14.897 14.897 qmin 34.253 34.258 34.277 qmax 435.321 419.827 426.783 amean 214.831 206.490 215.048 amin 195.244 188.675 203.487 amax 235.913 227.930 231.646 emean 0.830 0.823 0.831 emin 0.811 0.804 0.818 emax 0.847 0.842 0.843 imean 15.985 16.044 15.947 imin 14.870 14.870 14.870 imax 16.752 16.789 16.715 excite_mean 0.875 0.869 0.875 fracstop 1.000 1.000 1.000 cjmean 3.001 3.001 3.001 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 231.8 228.3 265.5 kozaiamp 180.0 180.0 180.0