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: 16EJ398 # Created Sun Feb 23 02:10:42 2025 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 8.04d # First observation: 2016/03/04 # Last observation: 2016/03/12 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.029185 0.000000 -0.010621 0.026194 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # Chi-squared of fit: 3.80 DOF: 21 RMS: 0.10 # Min/Max residuals: -0.21 0.16 # Exact a, adot, b, bdot, g, gdot: 1.517991E-05 2.431784E-02 -6.387698E-06 -1.015027E-02 2.536130E-02 -2.866671E-03 # Covariance matrix: 5.6240E-12 8.0090E-09 -3.2206E-13 -7.9454E-10 1.4193E-09 -1.1265E-08 8.0090E-09 1.1856E-05 -4.7540E-10 -1.1739E-06 2.0965E-06 -2.0016E-05 -3.2206E-13 -4.7540E-10 2.0827E-13 3.6280E-11 -8.4124E-11 6.9399E-10 -7.9454E-10 -1.1739E-06 3.6280E-11 1.1780E-07 -2.0765E-07 1.8907E-06 1.4193E-09 2.0965E-06 -8.4124E-11 -2.0765E-07 3.7088E-07 -3.2934E-06 -1.1265E-08 -2.0016E-05 6.9399E-10 1.8907E-06 -3.2934E-06 5.8998E-04 # lat0 lon0 xBary yBary zBary JD0 -11.270248 140.131085 -0.396928 -0.176792 -0.888023 2457451.844529 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 325.71376 +/- 155.094 Argument of Peri: 253.28436 +/- 245.882 Long of Asc Node: 295.90953 +/- 2.483 Inclination: 24.89848 +/- 2.075 Eccentricity: 0.15720125 +/- 0.7941 Semi-Major Axis: 45.83525797 +/- 16.5766 Time of Perihelion: 2468245.3163 +/- 48478.2 Perihelion: 38.62989801 +/- 38.9869 Aphelion: 53.04061793 +/- 41.1432 Period (y) 310.3185 +/- 168.34 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.63307629 +/- 0.7126 Ecliptic Y 25.06206967 +/- 0.5953 Ecliptic Z -7.70636167 +/- 0.1850 Ecliptic XDOT -0.00128571 +/- 0.0019 Ecliptic YDOT -0.00235369 +/- 0.0017 Ecliptic ZDOT -0.00101414 +/- 0.0005 # Distances at JD0 (AU) Heliocenter to KBO 40.32221111 +/- 0.6567 Geocenter to KBO 39.43015506 +/- 0.9468 # Hcoef: 8.49
The following table shows the complete astrometric record for 16EJ398. 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 (16EJ398) followed by the observatory code and reference code for the source of the astrometry.
2016 03 04.34374 09 15 57.79 +04 03 27.8 24.0i 16EJ398 T09 C~8eUq 2016 03 04.34717 09 15 57.77 +04 03 28.0 24.3i 16EJ398 T09 C~8eUq 2016 03 04.36703 09 15 57.68 +04 03 28.5 24.3i 16EJ398 T09 C~8eUq 2016 03 04.38892 09 15 57.59 +04 03 28.8 24.0i 16EJ398 T09 C~8eUq 2016 03 04.40242 09 15 57.53 +04 03 29.0 24.3i 16EJ398 T09 C~8eUq 2016 03 04.41331 09 15 57.48 +04 03 29.3 24.1i 16EJ398 T09 C~8eUq 2016 03 07.35383 09 15 44.71 +04 04 35.6 25.2g 16EJ398 T09 C~8eUq 2016 03 07.35667 09 15 44.70 +04 04 35.6 25.7g 16EJ398 T09 C~8eUq 2016 03 07.40643 09 15 44.49 +04 04 37.0 25.4g 16EJ398 T09 C~8eUq 2016 03 07.42361 09 15 44.42 +04 04 37.3 25.1g 16EJ398 T09 C~8eUq 2016 03 12.32378 09 15 24.20 +04 06 28.6 24.0z 16EJ398 T09 C~8eUq 2016 03 12.36808 09 15 24.02 +04 06 29.4 24.4z 16EJ398 T09 C~8eUq 2016 03 12.37925 09 15 23.96 +04 06 29.8 24.0z 16EJ398 T09 C~8eUq
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 -0.00 0.00 0.01
2 0.0000 -0.35 -0.11 0.10 0.11
3 0.0001 -1.78 -0.13 0.16 0.16
4 0.0001 -3.15 0.05 0.04 0.01
5 0.0002 -4.07 0.09 -0.05 -0.08
6 0.0002 -4.87 0.06 0.01 -0.03
7 0.0082 -207.07 -0.05 4.65 -0.16
8 0.0082 -207.21 -0.00 4.61 -0.21
9 0.0084 -210.63 0.01 4.98 0.08
10 0.0084 -211.72 0.10 4.94 0.02
11 0.0218 -533.79 0.03 18.35 0.14
12 0.0220 -536.60 0.10 18.29 -0.05
13 0.0220 -537.58 -0.15 18.39 0.02
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.
16EJ398 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