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: 16TM176 # Created Sun Nov 24 02:10:45 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 24 observations of 24 # Arc: 6.08y # First observation: 2016/10/01 # Last observation: 2022/10/31 # Chi-squared of fit: 4.81 DOF: 42 RMS: 0.08 # Min/Max residuals: -0.17 0.19 # Exact a, adot, b, bdot, g, gdot: 1.800901E-05 3.326374E-02 4.981605E-06 8.569947E-03 2.891015E-02 7.518203E-03 # Covariance matrix: 1.8549E-13 -1.5465E-13 1.9638E-14 -3.6990E-14 1.2401E-14 -6.9029E-13 -1.5465E-13 3.1574E-13 -4.4217E-14 7.8320E-14 2.9857E-13 1.4745E-12 1.9638E-14 -4.4217E-14 1.1811E-13 -3.5096E-14 -3.8553E-14 -2.1616E-13 -3.6990E-14 7.8320E-14 -3.5096E-14 3.2207E-14 5.0405E-14 3.8988E-13 1.2401E-14 2.9857E-13 -3.8553E-14 5.0405E-14 1.4354E-12 9.9860E-13 -6.9029E-13 1.4745E-12 -2.1616E-13 3.8988E-13 9.9860E-13 7.3209E-12 # lat0 lon0 xBary yBary zBary JD0 -8.461896 4.222766 -0.072420 -0.147340 -0.991690 2457662.684179 # Heliocentric elements and errors Epoch: 2457662.5000 = 2016/10/01 Mean Anomaly: 20.27103 +/- 0.010 Argument of Peri: 283.19007 +/- 0.016 Long of Asc Node: 33.36942 +/- 0.000 Inclination: 16.58592 +/- 0.000 Eccentricity: 0.38722318 +/- 0.0001 Semi-Major Axis: 52.96203347 +/- 0.0140 Time of Perihelion: 2449735.3199 +/- 4.9 Perihelion: 32.45390661 +/- 0.0112 Aphelion: 73.47016032 +/- 0.0207 Period (y) 385.4386 +/- 0.15 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.11141393 +/- 0.0014 Ecliptic Y 2.66264046 +/- 0.0001 Ecliptic Z -5.08982733 +/- 0.0002 Ecliptic XDOT 0.00059134 +/- 0.0000 Ecliptic YDOT 0.00319537 +/- 0.0000 Ecliptic ZDOT 0.00069795 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.57804308 +/- 0.0014 Geocenter to KBO 34.58983015 +/- 0.0014 # Hcoef: 7.42
The following table shows the complete astrometric record for 16TM176. 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 (16TM176) followed by the observatory code and reference code for the source of the astrometry.
2016 10 01.18339 00 28 58.173 -06 05 13.05 22.6r 16TM176 W84 C~55aS 2016 10 01.18476 00 28 58.165 -06 05 12.92 22.6i 16TM176 W84 C~55aS 2016 10 01.18613 00 28 58.159 -06 05 13.10 23.3g 16TM176 W84 C~55aS 2016 10 02.18599 00 28 52.865 -06 05 40.51 23.0r 16TM176 W84 C~55aS 2016 10 02.18735 00 28 52.861 -06 05 40.57 22.7i 16TM176 W84 C~55aS 2016 10 02.18872 00 28 52.839 -06 05 40.58 23.4g 16TM176 W84 C~55aS 2016 11 07.10292 00 26 00.184 -06 17 17.81 22.7z 16TM176 W84 C~55aS 2017 09 24.29972 00 35 45.477 -04 49 41.55 22.7i 16TM176 W84 C~55aS 2017 09 24.30111 00 35 45.465 -04 49 41.62 22.5r 16TM176 W84 C~55aS 2017 09 24.30248 00 35 45.456 -04 49 41.71 22.8g 16TM176 W84 C~55aS 2017 09 26.30580 00 35 35.042 -04 50 39.97 22.3i 16TM176 W84 C~55aS 2017 09 26.30718 00 35 35.031 -04 50 40.21 23.4g 16TM176 W84 C~55aS 2017 10 17.24068 00 33 46.196 -04 59 46.25 22.6r 16TM176 W84 C~55aS 2017 10 27.14103 00 32 58.022 -05 03 04.55 22.2z 16TM176 W84 C~55aS 2017 10 29.12247 00 32 48.909 -05 03 38.06 22.5z 16TM176 W84 C~55aS 2018 10 19.11687 00 39 41.518 -03 49 15.14 22.6z 16TM176 W84 C~55aS 2018 10 28.20932 00 38 57.425 -03 52 20.31 22.8i 16TM176 W84 C~55aS 2018 11 27.08747 00 37 05.884 -03 56 59.46 23.6g 16TM176 W84 C~55aS 2022 10 31.02872 01 01 58.18 +00 41 09.4 23.3r 16TM176 W84 C~5zAR 2022 10 31.06060 01 01 58.02 +00 41 08.7 23.2r 16TM176 W84 C~5zAR 2022 10 31.08231 01 01 57.92 +00 41 08.2 23.4r 16TM176 W84 C~5zAR 2022 10 31.11412 01 01 57.77 +00 41 07.6 23.5r 16TM176 W84 C~5zAR 2022 10 31.13533 01 01 57.67 +00 41 07.2 23.4r 16TM176 W84 C~5zAR 2022 10 31.18071 01 01 57.44 +00 41 06.2 23.6r 16TM176 W84 C~5zAR
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 0.06 0.00 -0.04
2 0.0000 0.00 0.05 0.00 0.13
3 0.0000 0.00 0.07 0.00 -0.01
4 0.0027 0.00 0.00 0.00 0.05
5 0.0027 0.00 0.05 0.00 0.03
6 0.0028 0.00 -0.17 0.00 0.06
7 0.1011 0.00 -0.01 0.00 -0.12
8 0.9805 0.00 0.02 0.00 0.01
9 0.9805 0.00 -0.05 0.00 -0.02
10 0.9805 0.00 -0.08 0.00 -0.07
11 0.9860 0.00 0.08 0.00 0.08
12 0.9860 0.00 0.03 0.00 -0.12
13 1.0433 0.00 -0.02 0.00 0.14
14 1.0704 0.00 -0.14 0.00 -0.08
15 1.0758 0.00 0.12 0.00 -0.01
16 2.0477 0.00 0.05 0.00 0.19
17 2.0726 0.00 -0.00 0.00 -0.15
18 2.1544 0.00 0.08 0.00 -0.05
19 6.0803 0.00 0.05 0.00 0.07
20 6.0804 0.00 -0.06 0.00 0.01
21 6.0805 0.00 -0.01 0.00 -0.05
22 6.0806 0.00 0.03 0.00 -0.00
23 6.0806 0.00 0.05 0.00 0.02
24 6.0808 0.00 -0.14 0.00 -0.06
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.
16TM176 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 53.634 53.634 53.634 ecceobj 0.394 0.394 0.394 incobj 16.537 16.537 16.537 qmin 31.886 31.874 31.730 qmax 78.781 78.365 78.648 amean 54.079 54.410 54.336 amin 52.751 52.750 52.723 amax 55.771 55.613 55.750 emean 0.385 0.394 0.391 emin 0.361 0.362 0.367 emax 0.414 0.415 0.416 imean 16.703 16.342 16.736 imin 15.048 15.138 15.186 imax 17.967 17.961 17.935 excite_mean 0.481 0.484 0.486 fracstop 1.000 1.000 1.000 cjmean 2.925 2.925 2.921 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 195.1 177.9 181.3 kozaiamp 180.0 180.0 180.0