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: 21CL46 # Created Wed Jul 17 01:11:48 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 16 observations of 16 # Arc: 10.85y # First observation: 2013/03/06 # Last observation: 2024/01/10 # Chi-squared of fit: 12.31 DOF: 26 RMS: 0.16 # Min/Max residuals: -0.60 0.18 # Exact a, adot, b, bdot, g, gdot: 1.449576E-05 1.918258E-02 1.338182E-06 2.931397E-03 2.135382E-02 -8.113315E-03 # Covariance matrix: 3.4668E-13 -8.6569E-14 9.4567E-15 -7.8249E-15 -2.5170E-14 -2.3142E-13 -8.6569E-14 5.0618E-14 -7.5265E-15 6.3035E-15 -4.7794E-15 1.8768E-13 9.4567E-15 -7.5265E-15 2.8261E-13 -3.4296E-14 -6.7533E-15 -3.3577E-14 -7.8249E-15 6.3035E-15 -3.4296E-14 6.4256E-15 4.3480E-15 2.7726E-14 -2.5170E-14 -4.7794E-15 -6.7533E-15 4.3480E-15 4.2428E-13 1.0799E-13 -2.3142E-13 1.8768E-13 -3.3577E-14 2.7726E-14 1.0799E-13 8.1904E-13 # lat0 lon0 xBary yBary zBary JD0 -3.408534 104.280450 -0.870763 -0.028208 -0.475145 2456357.574551 # Heliocentric elements and errors Epoch: 2456358.5000 = 2013/03/07 Mean Anomaly: 315.47607 +/- 0.012 Argument of Peri: 67.33980 +/- 0.014 Long of Asc Node: 126.40125 +/- 0.000 Inclination: 9.31354 +/- 0.000 Eccentricity: 0.39874363 +/- 0.0001 Semi-Major Axis: 56.78465626 +/- 0.0096 Time of Perihelion: 2475688.6806 +/- 35.0 Perihelion: 34.14213638 +/- 0.0068 Aphelion: 79.42717613 +/- 0.0138 Period (y) 427.9122 +/- 0.11 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -12.49208814 +/- 0.0004 Ecliptic Y 45.55153552 +/- 0.0014 Ecliptic Z -2.78426045 +/- 0.0001 Ecliptic XDOT -0.00213910 +/- 0.0000 Ecliptic YDOT -0.00159063 +/- 0.0000 Ecliptic ZDOT 0.00043716 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.31566427 +/- 0.0013 Geocenter to KBO 46.83034685 +/- 0.0014 # Hcoef: 6.62
The following table shows the complete astrometric record for 21CL46. 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 (21CL46) followed by the observatory code and reference code for the source of the astrometry.
2013 03 06.073773 07 00 29.19 +19 17 03.3 21CL46 W84 C~6VLf 2013 03 06.075269 07 00 29.18 +19 17 03.3 21CL46 W84 C~6VLf 2013 03 06.076767 07 00 29.19 +19 17 03.1 21CL46 W84 C~6VLf 2014 03 29.032922 07 04 52.78 +19 22 45.3 21CL46 W84 C~6VLf 2014 03 29.034994 07 04 52.79 +19 22 45.4 21CL46 W84 C~6VLf 2018 12 29.202677 07 34 52.92 +19 14 08.2 23.3g 21CL46 W84 C~6VLf 2018 12 29.204409 07 34 52.91 +19 14 07.9 21CL46 W84 C~6VLf 2019 03 04.038721 07 30 18.35 +19 27 31.9 21CL46 W84 C~6VLf 2019 12 09.318763 07 41 35.44 +19 09 57.6 22.6i 21CL46 W84 C~6VLf 2021 02 15.27192 07 41 47.688 +19 23 48.24 23.4R 21CL46 568 C~6VLf 2021 02 16.26737 07 41 43.767 +19 24 01.46 23.4R 21CL46 568 C~6VLf 2021 03 05.084612 07 40 47.18 +19 27 24.8 22.6i 21CL46 W84 C~6VLf 2021 04 02.015923 07 40 03.56 +19 31 14.9 22.7i 21CL46 W84 C~6VLf 2024 01 10.73253 08 01 16.36 +19 08 21.8 23.6w 21CL46 O18 C~7gyi 2024 01 10.74120 08 01 16.31 +19 08 21.9 23.0w 21CL46 O18 C~7gyi 2024 01 10.74990 08 01 16.25 +19 08 22.0 22.7w 21CL46 O18 C~7gyi
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 0.18
2 0.0000 0.00 -0.15 0.00 0.16
3 0.0000 0.00 0.04 0.00 -0.05
4 1.0622 0.00 -0.02 0.00 -0.07
5 1.0622 0.00 0.13 0.00 0.02
6 5.8155 0.00 0.16 0.00 0.17
7 5.8156 0.00 0.13 0.00 -0.15
8 5.9931 0.00 -0.03 0.00 -0.60
9 6.7604 0.00 -0.17 0.00 0.05
10 7.9485 0.00 0.01 0.00 0.04
11 7.9512 0.00 -0.00 0.00 0.10
12 7.9973 0.00 -0.14 0.00 -0.15
13 8.0738 0.00 0.06 0.00 0.01
14 10.8492 0.00 0.18 0.00 0.13
15 10.8492 0.00 0.07 0.00 0.09
16 10.8492 0.00 -0.18 0.00 0.05
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.
21CL46 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 56.595 56.595 56.596 ecceobj 0.395 0.395 0.395 incobj 9.328 9.328 9.328 qmin 33.223 33.023 33.318 qmax 83.251 83.130 80.951 amean 56.664 56.614 55.776 amin 55.236 55.358 54.443 amax 58.495 58.379 57.623 emean 0.395 0.399 0.378 emin 0.372 0.379 0.351 emax 0.423 0.424 0.409 imean 8.220 8.483 7.299 imin 6.992 7.125 5.901 imax 9.666 9.942 9.458 excite_mean 0.421 0.426 0.399 fracstop 1.000 1.000 1.000 cjmean 3.025 3.018 3.039 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 180.4 176.1 182.2 kozaiamp 179.9 179.9 180.0