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: 16RO82 # Created Sun Dec 22 02:10:46 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 18 observations of 18 # Arc: 5.06y # First observation: 2016/09/08 # Last observation: 2021/09/30 # Chi-squared of fit: 4.62 DOF: 30 RMS: 0.09 # Min/Max residuals: -0.32 0.24 # Exact a, adot, b, bdot, g, gdot: 1.580710E-05 2.648193E-02 4.760820E-06 7.924011E-03 2.588479E-02 6.745779E-05 # Covariance matrix: 2.8787E-13 -7.2785E-15 -4.1716E-14 9.1479E-15 3.3505E-13 1.9012E-13 -7.2785E-15 4.5847E-13 -9.8728E-14 1.4425E-13 4.7266E-13 3.3950E-12 -4.1716E-14 -9.8728E-14 1.7155E-13 -6.7867E-14 -1.8089E-13 -7.5999E-13 9.1479E-15 1.4425E-13 -6.7867E-14 6.8891E-14 1.5574E-13 1.1203E-12 3.3505E-13 4.7266E-13 -1.8089E-13 1.5574E-13 1.1496E-12 3.6127E-12 1.9012E-13 3.3950E-12 -7.5999E-13 1.1203E-12 3.6127E-12 2.6371E-11 # lat0 lon0 xBary yBary zBary JD0 -31.680538 -11.940152 0.034033 -0.530050 -0.859238 2457639.866779 # Heliocentric elements and errors Epoch: 2457640.5000 = 2016/09/09 Mean Anomaly: 2.26205 +/- 0.067 Argument of Peri: 292.61777 +/- 0.089 Long of Asc Node: 47.73163 +/- 0.000 Inclination: 34.73346 +/- 0.000 Eccentricity: 0.13655343 +/- 0.0001 Semi-Major Axis: 45.73120725 +/- 0.0076 Time of Perihelion: 2456930.7309 +/- 21.1 Perihelion: 39.48645386 +/- 0.0082 Aphelion: 51.97596064 +/- 0.0100 Period (y) 309.2625 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.14202654 +/- 0.0013 Ecliptic Y -7.04646765 +/- 0.0003 Ecliptic Z -20.28910823 +/- 0.0008 Ecliptic XDOT 0.00101776 +/- 0.0000 Ecliptic YDOT 0.00264116 +/- 0.0000 Ecliptic ZDOT 0.00070946 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.49296418 +/- 0.0012 Geocenter to KBO 38.63275528 +/- 0.0016 # Hcoef: 6.40
The following table shows the complete astrometric record for 16RO82. 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 (16RO82) followed by the observatory code and reference code for the source of the astrometry.
2016 09 08.36599 00 13 01.573 -33 29 45.59 22.3i 16RO82 W84 C~55Zp 2016 09 08.36736 00 13 01.564 -33 29 45.62 22.5r 16RO82 W84 C~55Zp 2016 09 08.36872 00 13 01.550 -33 29 45.77 22.5g 16RO82 W84 C~55Zp 2016 09 09.13031 00 12 57.356 -33 30 10.35 22.1z 16RO82 W84 C~55Zp 2016 10 08.04986 00 10 10.970 -33 39 46.34 22.2z 16RO82 W84 C~55Zp 2016 10 09.07961 00 10 05.150 -33 39 52.35 22.3i 16RO82 W84 C~55Zp 2016 10 22.13710 00 08 54.700 -33 39 35.19 22.9g 16RO82 W84 C~55Zp 2016 11 18.02468 00 07 03.281 -33 29 44.87 22.3i 16RO82 W84 C~55Zp 2017 10 11.27718 00 15 16.473 -32 33 44.32 21.9z 16RO82 W84 C~55Zp 2017 10 22.11058 00 14 18.259 -32 33 39.82 22.3i 16RO82 W84 C~55Zp 2017 10 27.24281 00 13 52.601 -32 32 55.20 22.3r 16RO82 W84 C~55Zp 2017 10 27.24419 00 13 52.598 -32 32 55.17 23.3g 16RO82 W84 C~55Zp 2018 11 27.10923 00 17 12.381 -31 13 32.77 22.5r 16RO82 W84 C~55Zp 2018 11 27.11061 00 17 12.381 -31 13 32.69 23.0g 16RO82 W84 C~55Zp 2021 09 30.369047 00 36 34.756 -27 57 37.59 22.3w 16RO82 F52 C~55Zp 2021 09 30.379855 00 36 34.687 -27 57 37.67 22.5w 16RO82 F52 C~55Zp 2021 09 30.390631 00 36 34.597 -27 57 38.06 22.4w 16RO82 F52 C~55Zp 2021 09 30.401448 00 36 34.552 -27 57 38.25 22.4w 16RO82 F52 C~55Zp
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 0.07 0.00 0.05
2 0.0000 0.00 0.05 0.00 0.06
3 0.0000 0.00 -0.04 0.00 -0.04
4 0.0021 0.00 -0.09 0.00 -0.03
5 0.0813 0.00 -0.03 0.00 -0.00
6 0.0841 0.00 0.07 0.00 0.06
7 0.1198 0.00 0.11 0.00 -0.12
8 0.1935 0.00 -0.06 0.00 0.00
9 1.0894 0.00 0.02 0.00 0.10
10 1.1191 0.00 0.01 0.00 0.00
11 1.1331 0.00 -0.05 0.00 -0.03
12 1.1331 0.00 0.01 0.00 -0.01
13 2.2170 0.00 -0.01 0.00 -0.04
14 2.2170 0.00 0.04 0.00 -0.01
15 5.0596 0.00 0.24 0.00 -0.04
16 5.0596 0.00 0.12 0.00 0.11
17 5.0596 0.00 -0.32 0.00 -0.06
18 5.0596 0.00 -0.08 0.00 -0.03
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.
16RO82 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.073 46.073 46.073 ecceobj 0.143 0.143 0.143 incobj 34.702 34.702 34.702 qmin 38.932 38.931 38.936 qmax 53.277 53.252 53.296 amean 45.961 45.961 45.961 amin 45.589 45.584 45.587 amax 46.361 46.379 46.359 emean 0.135 0.135 0.135 emin 0.122 0.122 0.122 emax 0.149 0.149 0.150 imean 33.908 33.908 33.908 imin 33.639 33.640 33.646 imax 34.191 34.190 34.197 excite_mean 0.574 0.574 0.574 fracstop 1.000 1.000 1.000 cjmean 2.687 2.687 2.687 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 170.2 170.2 170.2 kozaiamp 180.0 180.0 180.0