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: 16RQ82 # Created Wed Dec 25 02:10:41 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 16 observations of 16 # Arc: 5.16y # First observation: 2016/09/09 # Last observation: 2021/11/05 # Chi-squared of fit: 6.88 DOF: 26 RMS: 0.12 # Min/Max residuals: -0.26 0.31 # Exact a, adot, b, bdot, g, gdot: 1.460662E-05 2.183955E-02 -3.740683E-07 -1.016803E-03 2.305427E-02 1.507221E-03 # Covariance matrix: 4.4624E-13 -2.9515E-13 -9.9081E-15 1.2363E-14 8.0298E-14 -2.4552E-12 -2.9515E-13 4.7813E-13 1.5343E-14 -2.1963E-14 3.7236E-13 4.0549E-12 -9.9081E-15 1.5343E-14 2.2822E-13 -6.7622E-14 7.3896E-15 1.4732E-13 1.2363E-14 -2.1963E-14 -6.7622E-14 3.4189E-14 -1.5444E-14 -2.0416E-13 8.0298E-14 3.7236E-13 7.3896E-15 -1.5444E-14 1.0370E-12 2.3899E-12 -2.4552E-12 4.0549E-12 1.4732E-13 -2.0416E-13 2.3899E-12 3.8332E-11 # lat0 lon0 xBary yBary zBary JD0 -3.480384 -0.698244 0.217060 -0.059709 -0.984600 2457640.655729 # Heliocentric elements and errors Epoch: 2457640.5000 = 2016/09/09 Mean Anomaly: 77.44647 +/- 0.084 Argument of Peri: 146.82007 +/- 0.098 Long of Asc Node: 127.40284 +/- 0.005 Inclination: 4.33858 +/- 0.000 Eccentricity: 0.06541034 +/- 0.0003 Semi-Major Axis: 44.80842084 +/- 0.0070 Time of Perihelion: 2434071.7243 +/- 26.1 Perihelion: 41.87748681 +/- 0.0143 Aphelion: 47.73935487 +/- 0.0148 Period (y) 299.9492 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 44.27276900 +/- 0.0019 Ecliptic Y -0.75921370 +/- 0.0000 Ecliptic Z -2.63324199 +/- 0.0001 Ecliptic XDOT 0.00020460 +/- 0.0000 Ecliptic YDOT 0.00258439 +/- 0.0000 Ecliptic ZDOT -0.00013143 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.35746529 +/- 0.0019 Geocenter to KBO 43.37590435 +/- 0.0019 # Hcoef: 6.96
The following table shows the complete astrometric record for 16RQ82. 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 (16RQ82) followed by the observatory code and reference code for the source of the astrometry.
2016 09 09.15494 00 02 58.926 -03 28 14.07 23.1z 16RQ82 W84 C~55Zp 2016 09 09.15632 00 02 58.911 -03 28 13.98 23.1i 16RQ82 W84 C~55Zp 2016 09 22.09014 00 02 04.972 -03 34 19.59 23.2r 16RQ82 W84 C~55Zp 2017 09 27.28309 00 06 24.644 -03 09 58.47 22.8r 16RQ82 W84 C~55Zp 2017 10 17.22832 00 05 03.303 -03 18 31.67 23.3i 16RQ82 W84 C~55Zp 2017 11 08.09902 00 03 50.020 -03 25 31.54 23.9g 16RQ82 W84 C~55Zp 2017 11 09.06567 00 03 47.403 -03 25 45.52 22.5r 16RQ82 W84 C~55Zp 2018 09 14.30534 00 11 59.815 -02 37 06.38 23.9r 16RQ82 W84 C~55Zp 2018 09 14.31098 00 11 59.788 -02 37 06.55 23.2i 16RQ82 W84 C~55Zp 2018 09 14.31238 00 11 59.769 -02 37 06.40 23.9g 16RQ82 W84 C~55Zp 2018 10 18.13166 00 09 40.241 -02 52 10.27 22.9z 16RQ82 W84 C~55Zp 2018 11 07.12478 00 08 31.729 -02 58 44.97 23.4i 16RQ82 W84 C~55Zp 2018 11 07.12617 00 08 31.702 -02 58 44.84 24.1r 16RQ82 W84 C~55Zp 2021 11 05.109310 00 22 28.932 -01 38 36.28 23.5G 16RQ82 G37 C~5Bd5 2021 11 05.158980 00 22 28.772 -01 38 37.08 16RQ82 G37 C~5Bd5 2021 11 05.207710 00 22 28.612 -01 38 37.94 16RQ82 G37 C~5Bd5
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 0.10 0.00 -0.03
2 0.0000 0.00 -0.04 0.00 0.10
3 0.0354 0.00 0.06 0.00 -0.07
4 1.0489 0.00 -0.03 0.00 -0.18
5 1.1036 0.00 -0.08 0.00 -0.11
6 1.1634 0.00 -0.15 0.00 0.10
7 1.1661 0.00 0.17 0.00 -0.02
8 2.0127 0.00 0.06 0.00 -0.01
9 2.0127 0.00 0.01 0.00 -0.02
10 2.0128 0.00 -0.19 0.00 0.17
11 2.1053 0.00 0.31 0.00 0.00
12 2.1601 0.00 0.09 0.00 0.01
13 2.1601 0.00 -0.26 0.00 0.16
14 5.1552 0.00 -0.03 0.00 -0.09
15 5.1554 0.00 0.01 0.00 -0.01
16 5.1555 0.00 0.01 0.00 -0.00
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.
16RQ82 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.238 45.238 45.238 ecceobj 0.066 0.066 0.066 incobj 4.333 4.333 4.333 qmin 41.556 41.572 41.553 qmax 48.795 48.795 48.795 amean 45.056 45.056 45.056 amin 44.706 44.703 44.699 amax 45.425 45.425 45.431 emean 0.061 0.061 0.061 emin 0.047 0.047 0.047 emax 0.074 0.074 0.074 imean 3.073 3.073 3.073 imin 2.626 2.626 2.626 imax 3.561 3.560 3.562 excite_mean 0.081 0.081 0.081 fracstop 1.000 1.000 1.000 cjmean 3.106 3.106 3.106 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 186.8 186.7 187.0 kozaiamp 180.0 180.0 180.0