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: 16ED366 # Created Wed Nov 27 02:10:35 2024 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 24.15d # First observation: 2016/02/12 # Last observation: 2016/03/07 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.033874 0.000001 -0.009502 0.027808 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 4.58 DOF: 25 RMS: 0.10 # Min/Max residuals: -0.18 0.17 # Exact a, adot, b, bdot, g, gdot: 1.569595E-05 2.654935E-02 -4.596466E-06 -9.221216E-03 2.667816E-02 6.677925E-03 # Covariance matrix: 1.8659E-12 2.2951E-09 4.6310E-14 -8.8671E-11 3.5608E-10 -1.2418E-08 2.2951E-09 3.8271E-06 7.7197E-11 -1.4670E-07 5.8992E-07 -2.1948E-05 4.6310E-14 7.7197E-11 4.7430E-13 -1.0700E-11 1.1879E-11 -4.5795E-10 -8.8671E-11 -1.4670E-07 -1.0700E-11 5.8048E-09 -2.2672E-08 7.9932E-07 3.5608E-10 5.8992E-07 1.1879E-11 -2.2672E-08 9.1098E-08 -3.2670E-06 -1.2418E-08 -2.1948E-05 -4.5795E-10 7.9932E-07 -3.2670E-06 2.0930E-04 # lat0 lon0 xBary yBary zBary JD0 -11.685873 142.084905 -0.007909 -0.199350 -0.964718 2457430.780199 # Heliocentric elements and errors Epoch: 2457430.5000 = 2016/02/12 Mean Anomaly: 44.24171 +/- 19.786 Argument of Peri: 140.16327 +/- 57.522 Long of Asc Node: 292.54185 +/- 1.765 Inclination: 22.20861 +/- 1.095 Eccentricity: 0.26858146 +/- 0.4963 Semi-Major Axis: 45.00319152 +/- 10.3311 Time of Perihelion: 2443878.8306 +/- 3867.4 Perihelion: 32.91616874 +/- 23.5801 Aphelion: 57.09021429 +/- 25.8976 Period (y) 301.9070 +/- 103.96 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.74501885 +/- 0.3276 Ecliptic Y 23.15305635 +/- 0.2552 Ecliptic Z -7.59238565 +/- 0.0859 Ecliptic XDOT -0.00205290 +/- 0.0011 Ecliptic YDOT -0.00186188 +/- 0.0010 Ecliptic ZDOT -0.00106551 +/- 0.0003 # Distances at JD0 (AU) Heliocenter to KBO 38.45093608 +/- 0.2969 Geocenter to KBO 37.48384345 +/- 0.4241 # Hcoef: 8.42
The following table shows the complete astrometric record for 16ED366. 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 (16ED366) followed by the observatory code and reference code for the source of the astrometry.
2016 02 12.27941 09 22 44.51 +03 04 07.2 22.9y 16ED366 T09 C~89T9 2016 02 12.30448 09 22 44.39 +03 04 07.9 24.0y 16ED366 T09 C~89T9 2016 02 12.30719 09 22 44.36 +03 04 08.1 23.4y 16ED366 T09 C~89T9 2016 03 04.34033 09 20 59.18 +03 12 12.1 24.1i 16ED366 T09 C~89T9 2016 03 04.35330 09 20 59.12 +03 12 12.2 24.0i 16ED366 T09 C~89T9 2016 03 04.35599 09 20 59.11 +03 12 12.2 24.0i 16ED366 T09 C~89T9 2016 03 04.36972 09 20 59.05 +03 12 12.7 24.2i 16ED366 T09 C~89T9 2016 03 04.38346 09 20 58.98 +03 12 12.9 24.2i 16ED366 T09 C~89T9 2016 03 04.41058 09 20 58.85 +03 12 13.8 24.2i 16ED366 T09 C~89T9 2016 03 04.41599 09 20 58.83 +03 12 13.9 24.2i 16ED366 T09 C~89T9 2016 03 07.34501 09 20 45.49 +03 13 26.7 24.8g 16ED366 T09 C~89T9 2016 03 07.36836 09 20 45.39 +03 13 27.2 24.9g 16ED366 T09 C~89T9 2016 03 07.39772 09 20 45.24 +03 13 27.9 24.7g 16ED366 T09 C~89T9 2016 03 07.41715 09 20 45.15 +03 13 28.6 25.0g 16ED366 T09 C~89T9 2016 03 07.42573 09 20 45.13 +03 13 28.6 24.9g 16ED366 T09 C~89T9
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 -0.18
2 0.0001 -1.93 0.13 0.10 0.06
3 0.0001 -2.42 -0.14 0.15 0.12
4 0.0577 -1650.09 -0.11 -35.11 0.12
5 0.0577 -1650.97 -0.02 -35.29 -0.08
6 0.0577 -1651.11 0.04 -35.34 -0.13
7 0.0577 -1652.12 0.06 -35.15 0.04
8 0.0578 -1653.18 0.03 -35.29 -0.11
9 0.0579 -1655.31 -0.07 -35.04 0.10
10 0.0579 -1655.63 0.02 -35.04 0.09
11 0.0659 -1868.18 0.00 -28.62 0.04
12 0.0660 -1869.76 0.13 -28.62 -0.01
13 0.0660 -1872.11 -0.09 -28.66 -0.11
14 0.0661 -1873.61 -0.17 -28.41 0.08
15 0.0661 -1873.90 0.17 -28.51 -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.