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: 16FR203 # Created Sun Oct 19 01:11:27 2025 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 29.11d # First observation: 2016/03/16 # Last observation: 2016/04/14 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.021941 -0.000000 -0.006102 0.023431 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 7.47 DOF: 23 RMS: 0.13 # Min/Max residuals: -0.21 0.37 # Exact a, adot, b, bdot, g, gdot: 1.371534E-05 1.974317E-02 -4.039771E-06 -5.901687E-03 2.296377E-02 -7.412782E-03 # Covariance matrix: 1.4756E-12 1.7591E-09 -1.4971E-13 -1.4872E-10 3.1968E-10 1.0899E-08 1.7591E-09 2.6213E-06 -2.2234E-10 -2.2093E-07 4.7445E-07 1.5626E-05 -1.4971E-13 -2.2234E-10 3.0695E-13 1.4854E-11 -4.0300E-11 -1.3636E-09 -1.4872E-10 -2.2093E-07 1.4854E-11 1.8713E-08 -4.0030E-08 -1.3453E-06 3.1968E-10 4.7445E-07 -4.0300E-11 -4.0030E-08 8.6065E-08 2.9571E-06 1.0899E-08 1.5626E-05 -1.3636E-09 -1.3453E-06 2.9571E-06 1.8169E-04 # lat0 lon0 xBary yBary zBary JD0 11.903117 -149.492136 0.562208 0.168540 -0.798875 2457463.970569 # Heliocentric elements and errors Epoch: 2457460.5000 = 2016/03/13 Mean Anomaly: 294.02213 +/- 59.755 Argument of Peri: 250.53313 +/- 17.670 Long of Asc Node: 63.92086 +/- 1.932 Inclination: 20.22002 +/- 0.933 Eccentricity: 0.34776162 +/- 0.5799 Semi-Major Axis: 45.50181363 +/- 17.1623 Time of Perihelion: 2478006.9724 +/- 14531.2 Perihelion: 29.67802934 +/- 28.6622 Aphelion: 61.32559792 +/- 35.0891 Period (y) 306.9384 +/- 173.66 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -37.70381967 +/- 0.4690 Ecliptic Y -21.56406970 +/- 0.2763 Ecliptic Z 8.98171029 +/- 0.1147 Ecliptic XDOT 0.00181494 +/- 0.0013 Ecliptic YDOT -0.00166964 +/- 0.0009 Ecliptic ZDOT -0.00087078 +/- 0.0003 # Distances at JD0 (AU) Heliocenter to KBO 44.35378495 +/- 0.4214 Geocenter to KBO 43.54685724 +/- 0.5563 # Hcoef: 7.45
The following table shows the complete astrometric record for 16FR203. 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 (16FR203) followed by the observatory code and reference code for the source of the astrometry.
2016 03 16.46978 14 10 08.39 -00 28 43.3 23.7z 16FR203 T09 C~98P1 2016 03 16.48822 14 10 08.34 -00 28 42.9 23.5z 16FR203 T09 C~98P1 2016 03 16.49644 14 10 08.29 -00 28 42.6 23.6z 16FR203 T09 C~98P1 2016 03 16.57077 14 10 08.05 -00 28 40.6 24.0z 16FR203 T09 C~98P1 2016 03 16.59526 14 10 07.96 -00 28 40.3 24.0z 16FR203 T09 C~98P1 2016 04 11.46218 14 08 26.27 -00 17 59.6 23.7i 16FR203 T09 C~98P1 2016 04 11.47868 14 08 26.21 -00 17 59.3 23.8i 16FR203 T09 C~98P1 2016 04 11.50846 14 08 26.06 -00 17 58.6 23.6i 16FR203 T09 C~98P1 2016 04 11.53003 14 08 25.97 -00 17 58.3 23.6i 16FR203 T09 C~98P1 2016 04 11.54904 14 08 25.88 -00 17 57.6 23.7i 16FR203 T09 C~98P1 2016 04 11.55174 14 08 25.88 -00 17 57.5 23.7i 16FR203 T09 C~98P1 2016 04 14.53412 14 08 12.81 -00 16 49.3 23.4y 16FR203 T09 C~98P1 2016 04 14.54222 14 08 12.74 -00 16 48.8 23.6y 16FR203 T09 C~98P1 2016 04 14.57727 14 08 12.59 -00 16 47.9 23.5y 16FR203 T09 C~98P1
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 -0.02 0.00 -0.00
2 0.0001 -0.84 0.18 0.12 0.00
3 0.0001 -1.65 -0.16 0.14 -0.02
4 0.0003 -5.72 -0.01 0.79 0.18
5 0.0003 -7.09 0.01 0.61 -0.15
6 0.0712 -1659.64 -0.06 79.71 0.06
7 0.0712 -1660.59 0.16 79.68 0.05
8 0.0713 -1662.95 -0.09 79.57 -0.04
9 0.0713 -1664.32 0.06 79.38 -0.20
10 0.0714 -1665.83 -0.11 79.58 0.01
11 0.0714 -1665.86 0.04 79.67 0.11
12 0.0796 -1873.42 0.37 76.54 -0.13
13 0.0796 -1874.58 -0.21 76.65 -0.00
14 0.0797 -1877.00 -0.15 76.73 0.13
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.
16FR203 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0