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: 16AX401 # Created Sun Apr 27 01:10:45 2025 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 23.04d # First observation: 2016/01/11 # Last observation: 2016/02/03 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.025423 0.000000 0.000781 0.024648 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 4.94 DOF: 21 RMS: 0.11 # Min/Max residuals: -0.22 0.24 # Exact a, adot, b, bdot, g, gdot: 1.450874E-05 2.326731E-02 2.272875E-07 6.740256E-04 2.425353E-02 -1.013245E-03 # Covariance matrix: 1.4899E-12 1.7322E-09 5.2069E-13 8.6858E-11 3.0223E-10 1.6788E-08 1.7322E-09 2.6959E-06 7.8075E-10 1.3532E-07 4.5952E-07 1.8804E-05 5.2069E-13 7.8075E-10 4.2436E-13 3.5521E-11 1.3373E-10 5.9241E-09 8.6858E-11 1.3532E-07 3.5521E-11 6.9519E-09 2.3057E-08 9.3652E-07 3.0223E-10 4.5952E-07 1.3373E-10 2.3057E-08 7.8557E-08 3.3740E-06 1.6788E-08 1.8804E-05 5.9241E-09 9.3652E-07 3.3740E-06 2.5578E-04 # lat0 lon0 xBary yBary zBary JD0 -13.578931 134.606805 0.407667 -0.209970 -0.870152 2457398.890419 # Heliocentric elements and errors Epoch: 2457390.5000 = 2016/01/03 Mean Anomaly: 261.10553 +/- 125.074 Argument of Peri: 21.48390 +/- 119.708 Long of Asc Node: 217.46797 +/- 0.695 Inclination: 13.37669 +/- 0.020 Eccentricity: 0.05565445 +/- 0.6734 Semi-Major Axis: 41.62424538 +/- 2.7684 Time of Perihelion: 2484336.0760 +/- 33972.5 Perihelion: 39.30767106 +/- 28.1505 Aphelion: 43.94081969 +/- 28.1808 Period (y) 268.5516 +/- 26.79 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -28.48722109 +/- 0.3252 Ecliptic Y 29.45532181 +/- 0.3298 Ecliptic Z -9.68045947 +/- 0.1119 Ecliptic XDOT -0.00180515 +/- 0.0013 Ecliptic YDOT -0.00191781 +/- 0.0012 Ecliptic ZDOT 0.00010084 +/- 0.0004 # Distances at JD0 (AU) Heliocenter to KBO 42.10521397 +/- 0.3198 Geocenter to KBO 41.23110512 +/- 0.4765 # Hcoef: 6.89
The following table shows the complete astrometric record for 16AX401. 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 (16AX401) followed by the observatory code and reference code for the source of the astrometry.
2016 01 11.38963 08 52 34.57 +03 25 56.0 23.7g 16AX401 T09 C~8ndh 2016 01 11.39248 08 52 34.55 +03 25 56.0 23.6g 16AX401 T09 C~8ndh 2016 01 11.40097 08 52 34.51 +03 25 56.2 23.6g 16AX401 T09 C~8ndh 2016 01 11.41375 08 52 34.44 +03 25 56.2 23.6g 16AX401 T09 C~8ndh 2016 01 15.34799 08 52 16.81 +03 26 42.7 22.8z 16AX401 T09 C~8ndh 2016 01 15.35337 08 52 16.79 +03 26 42.9 22.9z 16AX401 T09 C~8ndh 2016 01 15.36147 08 52 16.74 +03 26 42.9 22.9z 16AX401 T09 C~8ndh 2016 01 15.36416 08 52 16.72 +03 26 42.9 22.9z 16AX401 T09 C~8ndh 2016 01 15.37226 08 52 16.70 +03 26 43.1 22.9z 16AX401 T09 C~8ndh 2016 02 03.32415 08 50 47.43 +03 32 03.3 22.8y 16AX401 T09 C~8ndh 2016 02 03.39437 08 50 47.10 +03 32 04.6 22.7y 16AX401 T09 C~8ndh 2016 02 03.39708 08 50 47.07 +03 32 04.9 22.7y 16AX401 T09 C~8ndh 2016 02 03.43305 08 50 46.88 +03 32 05.4 23.1y 16AX401 T09 C~8ndh
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 0.14 0.00 0.04
2 0.0000 -0.29 0.04 -0.08 -0.02
3 0.0000 -0.92 -0.02 -0.06 0.08
4 0.0001 -1.92 -0.16 -0.35 -0.11
5 0.0108 -268.37 0.06 -29.57 -0.03
6 0.0109 -268.71 0.09 -29.46 0.11
7 0.0109 -269.43 -0.06 -29.67 -0.04
8 0.0109 -269.72 -0.16 -29.75 -0.10
9 0.0109 -270.06 0.06 -29.65 0.06
10 0.0628 -1642.88 0.05 -95.88 0.07
11 0.0630 -1647.99 0.24 -96.02 -0.03
12 0.0630 -1648.51 -0.07 -95.85 0.13
13 0.0631 -1651.38 -0.22 -96.17 -0.17
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.
16AX401 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