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: 16RD82 # Created Sun Nov 24 02:10:42 2024 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 4.28y # First observation: 2014/08/19 # Last observation: 2018/11/29 Preliminary a, adot, b, bdot, g, gdot: 0.000372 0.028085 0.000058 0.001233 0.026726 0.000000 # Chi-squared of fit: 4.64 DOF: 14 RMS: 0.12 # Min/Max residuals: -0.28 0.24 # Exact a, adot, b, bdot, g, gdot: 1.690227E-05 2.801359E-02 4.575495E-07 1.288497E-03 2.611205E-02 -5.659851E-04 # Covariance matrix: 1.4405E-12 -1.1008E-12 7.9635E-14 -6.8606E-14 -4.1334E-13 -7.6329E-12 -1.1008E-12 1.6420E-12 -1.0970E-13 9.2954E-14 1.2486E-12 1.2954E-11 7.9635E-14 -1.0970E-13 9.1254E-13 -2.9384E-13 -3.8317E-14 -1.0745E-12 -6.8606E-14 9.2954E-14 -2.9384E-13 1.1563E-13 2.9773E-14 9.1845E-13 -4.1334E-13 1.2486E-12 -3.8317E-14 2.9773E-14 1.6177E-12 8.7680E-12 -7.6329E-12 1.2954E-11 -1.0745E-12 9.1845E-13 8.7680E-12 1.1445E-10 # lat0 lon0 xBary yBary zBary JD0 -25.542629 -5.199670 0.488152 -0.383502 -0.802782 2456888.802848 # Heliocentric elements and errors Epoch: 2456880.5000 = 2014/08/11 Mean Anomaly: 348.44786 +/- 0.124 Argument of Peri: 290.37667 +/- 0.169 Long of Asc Node: 78.62110 +/- 0.002 Inclination: 25.07733 +/- 0.000 Eccentricity: 0.14315229 +/- 0.0002 Semi-Major Axis: 45.42714399 +/- 0.0079 Time of Perihelion: 2460469.1543 +/- 38.6 Perihelion: 38.92414439 +/- 0.0098 Aphelion: 51.93014358 +/- 0.0114 Period (y) 306.1832 +/- 0.08 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.25099328 +/- 0.0017 Ecliptic Y -3.69610883 +/- 0.0001 Ecliptic Z -16.51276700 +/- 0.0008 Ecliptic XDOT 0.00026599 +/- 0.0000 Ecliptic YDOT 0.00292042 +/- 0.0000 Ecliptic ZDOT 0.00014760 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.10198488 +/- 0.0016 Geocenter to KBO 38.29649885 +/- 0.0019 # Hcoef: 7.73
The following table shows the complete astrometric record for 16RD82. 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 (16RD82) followed by the observatory code and reference code for the source of the astrometry.
2014 08 19.30207 00 24 31.037 -25 20 55.79 23.5r 16RD82 W84 C~52Zj 2016 09 08.31542 00 35 25.465 -24 01 07.79 23.1z 16RD82 W84 C~52Zj 2016 11 05.07556 00 30 40.354 -24 18 59.27 23.9r 16RD82 W84 C~52Zj 2016 11 06.21596 00 30 35.708 -24 18 51.43 24.5g 16RD82 W84 C~52Zj 2016 11 19.15352 00 29 49.629 -24 16 00.29 23.9r 16RD82 W84 C~52Zj 2017 09 25.31342 00 40 08.638 -23 22 17.78 23.4r 16RD82 W84 C~52Zj 2017 09 27.30157 00 39 58.383 -23 23 15.55 23.0r 16RD82 W84 C~52Zj 2017 09 27.30295 00 39 58.359 -23 23 15.76 23.1i 16RD82 W84 C~52Zj 2018 11 29.06864 00 41 27.009 -22 37 28.15 23.8r 16RD82 W84 C~52Zj 2018 11 29.07003 00 41 27.001 -22 37 27.93 24.6g 16RD82 W84 C~52Zj
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 0.01 0.00 0.07
2 2.0562 10126.82 -0.18 292.46 0.04
3 2.2143 6156.03 0.03 1102.04 -0.06
4 2.2174 6102.74 0.18 1137.54 0.07
5 2.2528 5615.66 -0.18 1572.77 -0.28
6 3.1020 14668.65 0.06 573.91 0.11
7 3.1075 14516.00 0.24 588.15 0.03
8 3.1075 14515.60 -0.05 588.12 -0.01
9 4.2786 16889.42 -0.07 2459.84 -0.08
10 4.2786 16889.43 -0.04 2460.09 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.
16RD82 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.825 45.847 45.803 ecceobj 0.151 0.151 0.150 incobj 25.092 25.092 25.092 qmin 38.380 38.400 38.358 qmax 53.173 53.252 53.095 amean 45.609 45.656 45.588 amin 45.239 45.262 45.212 amax 46.033 46.072 45.996 emean 0.141 0.142 0.141 emin 0.128 0.129 0.128 emax 0.156 0.156 0.155 imean 23.654 23.660 23.654 imin 23.343 23.366 23.337 imax 24.019 24.025 24.012 excite_mean 0.425 0.426 0.425 fracstop 1.000 1.000 1.000 cjmean 2.893 2.893 2.893 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 173.7 173.5 173.7 kozaiamp 179.9 180.0 180.0