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: 16EW392 # Created Wed Nov 27 02:10:35 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 32.93d # First observation: 2016/02/03 # Last observation: 2016/03/07 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.033024 0.000000 -0.010143 0.027419 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 4.14 DOF: 23 RMS: 0.10 # Min/Max residuals: -0.18 0.23 # Exact a, adot, b, bdot, g, gdot: 1.586346E-05 2.620510E-02 -5.685079E-06 -9.952707E-03 2.635495E-02 -5.552868E-03 # Covariance matrix: 1.2919E-12 1.5386E-09 2.0853E-14 -4.0423E-11 2.3436E-10 -7.8865E-09 1.5386E-09 2.5663E-06 3.4804E-11 -6.6692E-08 3.8848E-07 -1.3811E-05 2.0853E-14 3.4804E-11 3.6191E-13 -5.1954E-12 5.2480E-12 -1.9836E-10 -4.0423E-11 -6.6692E-08 -5.1954E-12 1.8434E-09 -1.0188E-08 3.0994E-07 2.3436E-10 3.8848E-07 5.2480E-12 -1.0188E-08 5.9031E-08 -1.9724E-06 -7.8865E-09 -1.3811E-05 -1.9836E-10 3.0994E-07 -1.9724E-06 1.3755E-04 # lat0 lon0 xBary yBary zBary JD0 -11.377076 140.206385 0.112775 -0.192697 -0.958568 2457421.989979 # Heliocentric elements and errors Epoch: 2457420.5000 = 2016/02/02 Mean Anomaly: 320.98695 +/- 19.940 Argument of Peri: 271.69471 +/- 38.260 Long of Asc Node: 293.13471 +/- 1.391 Inclination: 23.42303 +/- 1.003 Eccentricity: 0.25589953 +/- 0.4490 Semi-Major Axis: 46.50891763 +/- 14.0682 Time of Perihelion: 2469975.3098 +/- 2954.5 Perihelion: 34.60730750 +/- 23.3612 Aphelion: 58.41052776 +/- 27.3556 Period (y) 317.1849 +/- 143.92 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.26441835 +/- 0.2635 Ecliptic Y 24.51789522 +/- 0.2195 Ecliptic Z -7.48516765 +/- 0.0690 Ecliptic XDOT -0.00115158 +/- 0.0008 Ecliptic YDOT -0.00259113 +/- 0.0008 Ecliptic ZDOT -0.00089980 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 38.90451262 +/- 0.2421 Geocenter to KBO 37.94353968 +/- 0.3498 # Hcoef: 9.03
The following table shows the complete astrometric record for 16EW392. 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 (16EW392) followed by the observatory code and reference code for the source of the astrometry.
2016 02 03.48919 09 16 06.83 +03 56 00.3 24.0y 16EW392 T09 C~8HEl 2016 02 03.53584 09 16 06.58 +03 56 01.4 23.4y 16EW392 T09 C~8HEl 2016 02 03.55770 09 16 06.48 +03 56 01.4 24.4y 16EW392 T09 C~8HEl 2016 02 03.57666 09 16 06.37 +03 56 01.7 23.5y 16EW392 T09 C~8HEl 2016 03 04.34374 09 13 37.42 +04 06 23.6 24.8i 16EW392 T09 C~8HEl 2016 03 04.35871 09 13 37.35 +04 06 23.9 24.9i 16EW392 T09 C~8HEl 2016 03 04.36703 09 13 37.31 +04 06 24.1 24.9i 16EW392 T09 C~8HEl 2016 03 04.38622 09 13 37.21 +04 06 24.6 24.8i 16EW392 T09 C~8HEl 2016 03 04.38892 09 13 37.21 +04 06 24.6 24.9i 16EW392 T09 C~8HEl 2016 03 04.39973 09 13 37.17 +04 06 24.9 24.9i 16EW392 T09 C~8HEl 2016 03 04.41331 09 13 37.10 +04 06 25.3 25.0i 16EW392 T09 C~8HEl 2016 03 07.35383 09 13 24.04 +04 07 34.3 25.5g 16EW392 T09 C~8HEl 2016 03 07.40643 09 13 23.81 +04 07 35.5 26.2g 16EW392 T09 C~8HEl 2016 03 07.42361 09 13 23.73 +04 07 36.2 26.1g 16EW392 T09 C~8HEl
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 -0.03 0.00 -0.06
2 0.0001 -3.90 -0.17 -0.10 0.23
3 0.0002 -5.32 0.17 -0.56 -0.05
4 0.0002 -6.98 0.03 -0.78 -0.11
5 0.0817 -2319.22 0.02 -90.70 0.01
6 0.0818 -2320.31 0.02 -90.73 -0.04
7 0.0818 -2320.94 -0.00 -90.72 -0.04
8 0.0819 -2322.52 -0.18 -90.70 -0.05
9 0.0819 -2322.52 0.02 -90.70 -0.05
10 0.0819 -2323.18 0.14 -90.60 0.04
11 0.0819 -2324.30 0.01 -90.54 0.08
12 0.0900 -2531.46 -0.01 -84.55 -0.06
13 0.0901 -2535.11 0.06 -84.46 -0.08
14 0.0902 -2536.46 -0.08 -84.16 0.19
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.