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: 16AW401 # Created Mon Apr 28 01:10:45 2025 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 23.04d # First observation: 2016/01/11 # Last observation: 2016/02/03 Preliminary a, adot, b, bdot, g, gdot: 0.000001 0.026275 0.000001 -0.016763 0.025505 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 6.71 DOF: 25 RMS: 0.12 # Min/Max residuals: -0.26 0.21 # Exact a, adot, b, bdot, g, gdot: 1.532554E-05 2.428015E-02 -1.042919E-05 -1.681385E-02 2.513449E-02 -3.841198E-04 # Covariance matrix: 8.4571E-13 8.3812E-10 4.3324E-13 3.1000E-11 1.4589E-10 7.3644E-09 8.3812E-10 2.0953E-06 9.0945E-10 9.2743E-08 3.4537E-07 6.3229E-06 4.3324E-13 9.0945E-10 6.2733E-13 3.4787E-11 1.5156E-10 3.8688E-09 3.1000E-11 9.2743E-08 3.4787E-11 4.3757E-09 1.5135E-08 1.7566E-07 1.4589E-10 3.4537E-07 1.5156E-10 1.5135E-08 5.7102E-08 1.1597E-06 7.3644E-09 6.3229E-06 3.8688E-09 1.7566E-07 1.1597E-06 9.9172E-05 # lat0 lon0 xBary yBary zBary JD0 -13.866749 134.349050 0.403453 -0.214795 -0.870938 2457398.901759 # Heliocentric elements and errors Epoch: 2457390.5000 = 2016/01/03 Mean Anomaly: 358.22171 +/- 23.380 Argument of Peri: 207.77552 +/- 64.117 Long of Asc Node: 295.12574 +/- 1.105 Inclination: 37.03834 +/- 1.573 Eccentricity: 0.42742886 +/- 0.0644 Semi-Major Axis: 70.93808378 +/- 7.5922 Time of Perihelion: 2458468.4983 +/- 14172.0 Perihelion: 40.61709927 +/- 6.3047 Aphelion: 101.25906830 +/- 11.7601 Period (y) 597.4855 +/- 95.92 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.34360527 +/- 0.2567 Ecliptic Y 28.54307088 +/- 0.2626 Ecliptic Z -9.53572933 +/- 0.0907 Ecliptic XDOT -0.00155679 +/- 0.0008 Ecliptic YDOT -0.00219864 +/- 0.0007 Ecliptic ZDOT -0.00176807 +/- 0.0003 # Distances at JD0 (AU) Heliocenter to KBO 40.66091217 +/- 0.2534 Geocenter to KBO 39.78596726 +/- 0.3783 # Hcoef: 7.44
The following table shows the complete astrometric record for 16AW401. 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 (16AW401) followed by the observatory code and reference code for the source of the astrometry.
2016 01 11.40097 08 51 17.45 +03 13 32.7 24.1g 16AW401 T09 C~8ndh 2016 01 11.41375 08 51 17.39 +03 13 32.8 25.3g 16AW401 T09 C~8ndh 2016 01 15.34452 08 50 58.38 +03 13 43.0 23.4z 16AW401 T09 C~8ndh 2016 01 15.35337 08 50 58.34 +03 13 43.0 23.4z 16AW401 T09 C~8ndh 2016 01 15.36147 08 50 58.29 +03 13 42.7 23.2z 16AW401 T09 C~8ndh 2016 01 15.37226 08 50 58.23 +03 13 42.9 23.5z 16AW401 T09 C~8ndh 2016 01 15.37768 08 50 58.21 +03 13 43.2 23.5z 16AW401 T09 C~8ndh 2016 01 15.38578 08 50 58.16 +03 13 43.2 23.7z 16AW401 T09 C~8ndh 2016 01 15.59729 08 50 57.12 +03 13 43.7 23.4z 16AW401 T09 C~8ndh 2016 02 03.32684 08 49 22.23 +03 16 12.6 22.6y 16AW401 T09 C~8ndh 2016 02 03.39437 08 49 21.90 +03 16 13.4 23.0y 16AW401 T09 C~8ndh 2016 02 03.39708 08 49 21.87 +03 16 13.3 23.4y 16AW401 T09 C~8ndh 2016 02 03.42760 08 49 21.72 +03 16 13.9 22.5y 16AW401 T09 C~8ndh 2016 02 03.43305 08 49 21.68 +03 16 13.8 23.1y 16AW401 T09 C~8ndh 2016 02 03.44125 08 49 21.66 +03 16 13.9 22.5y 16AW401 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 -0.01 0.00 -0.03
2 0.0000 -0.89 -0.00 -0.15 0.05
3 0.0108 -277.17 0.05 -69.63 0.11
4 0.0108 -277.74 0.11 -69.80 0.10
5 0.0108 -278.38 0.06 -70.30 -0.26
6 0.0109 -279.30 -0.07 -70.36 -0.13
7 0.0109 -279.67 -0.05 -70.15 0.16
8 0.0109 -280.39 -0.18 -70.36 0.10
9 0.0115 -295.49 0.10 -74.22 -0.10
10 0.0628 -1701.91 -0.17 -326.59 -0.02
11 0.0630 -1706.88 0.13 -327.19 0.06
12 0.0630 -1707.28 -0.06 -327.41 -0.13
13 0.0630 -1709.60 0.00 -327.46 0.14
14 0.0631 -1710.15 -0.12 -327.72 -0.07
15 0.0631 -1710.47 0.21 -327.71 0.03
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.
16AW401 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