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: 16EG366 # Created Mon Apr 28 01:10:45 2025 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 90.80d # First observation: 2016/03/07 # Last observation: 2016/06/06 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.013941 0.000001 -0.009640 0.019323 0.000000 # Chi-squared of fit: 5.51 DOF: 20 RMS: 0.12 # Min/Max residuals: -0.25 0.19 # Exact a, adot, b, bdot, g, gdot: 1.181415E-05 1.517549E-02 -8.135070E-06 -9.652956E-03 1.958931E-02 6.761929E-03 # Covariance matrix: 3.3209E-13 5.0803E-11 -6.2826E-14 -1.4748E-12 1.2790E-11 8.6044E-10 5.0803E-11 6.8501E-08 -7.9086E-11 -1.3868E-10 1.3713E-08 3.7795E-07 -6.2826E-14 -7.9086E-11 2.8789E-13 -6.3221E-13 -1.5915E-11 -4.5545E-10 -1.4748E-12 -1.3868E-10 -6.3221E-13 2.8124E-11 -6.2506E-11 -8.9215E-09 1.2790E-11 1.3713E-08 -1.5915E-11 -6.2506E-11 2.8076E-09 9.0261E-08 8.6044E-10 3.7795E-07 -4.5545E-10 -8.9215E-09 9.0261E-08 5.5110E-06 # lat0 lon0 xBary yBary zBary JD0 10.154934 -151.705054 0.652085 0.131315 -0.732313 2457455.086239 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 32.02455 +/- 8.089 Argument of Peri: 87.74633 +/- 4.278 Long of Asc Node: 43.05868 +/- 0.274 Inclination: 33.44505 +/- 0.459 Eccentricity: 0.42600899 +/- 0.1443 Semi-Major Axis: 70.75844420 +/- 11.3890 Time of Perihelion: 2438110.9480 +/- 1435.7 Perihelion: 40.61471098 +/- 12.1219 Aphelion: 100.90217742 +/- 19.1825 Period (y) 595.2174 +/- 143.71 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -45.21257146 +/- 0.1197 Ecliptic Y -23.59926896 +/- 0.0644 Ecliptic Z 8.99995793 +/- 0.0244 Ecliptic XDOT -0.00002333 +/- 0.0003 Ecliptic YDOT -0.00242823 +/- 0.0002 Ecliptic ZDOT -0.00116135 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 51.78900806 +/- 0.1086 Geocenter to KBO 51.04826028 +/- 0.1381 # Hcoef: 8.12
The following table shows the complete astrometric record for 16EG366. 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 (16EG366) followed by the observatory code and reference code for the source of the astrometry.
2016 03 07.58545 13 59 33.93 -01 21 56.8 26.0g 16EG366 T09 C~89TA 2016 03 07.58831 13 59 33.92 -01 21 56.8 25.4g 16EG366 T09 C~89TA 2016 03 07.60489 13 59 33.87 -01 21 56.5 25.3g 16EG366 T09 C~89TA 2016 03 07.62208 13 59 33.81 -01 21 56.0 25.5g 16EG366 T09 C~89TA 2016 03 07.64195 13 59 33.77 -01 21 56.0 26.0g 16EG366 T09 C~89TA 2016 03 16.48283 13 59 08.29 -01 19 13.5 24.1z 16EG366 T09 C~89TA 2016 03 16.53534 13 59 08.10 -01 19 12.6 24.8z 16EG366 T09 C~89TA 2016 03 16.55995 13 59 08.03 -01 19 11.9 25.2z 16EG366 T09 C~89TA 2016 06 05.36438 13 54 20.07 -01 01 55.1 25.7r 16EG366 T09 C~89TA 2016 06 05.37793 13 54 20.06 -01 01 55.1 25.7r 16EG366 T09 C~89TA 2016 06 05.39286 13 54 20.01 -01 01 55.1 25.0r 16EG366 T09 C~89TA 2016 06 06.33080 13 54 17.54 -01 01 55.3 25.9g 16EG366 T09 C~89TA 2016 06 06.38341 13 54 17.38 -01 01 55.3 26.3g 16EG366 T09 C~89TA
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 0.09 0.00 0.07
2 0.0000 -0.14 0.08 -0.05 0.01
3 0.0001 -0.95 0.01 -0.03 -0.01
4 0.0001 -1.97 -0.25 0.12 0.10
5 0.0002 -2.53 0.07 -0.09 -0.16
6 0.0244 -417.34 0.19 18.23 0.04
7 0.0245 -420.32 -0.11 18.08 -0.16
8 0.0246 -421.55 -0.08 18.37 0.11
9 0.2458 -4830.31 -0.22 -524.82 -0.06
10 0.2458 -4830.45 0.16 -524.87 0.08
11 0.2459 -4831.16 0.03 -525.13 0.03
12 0.2484 -4865.80 0.15 -538.32 0.01
13 0.2486 -4868.05 -0.12 -539.16 -0.07
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.
16EG366 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