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: 16EG364 # Created Wed Nov 27 02:10:35 2024 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 34.96d # First observation: 2016/03/07 # Last observation: 2016/04/11 Preliminary a, adot, b, bdot, g, gdot: 0.000002 0.028511 -0.000003 -0.005055 0.026192 0.000000 # Chi-squared of fit: 4.77 DOF: 28 RMS: 0.09 # Min/Max residuals: -0.15 0.22 # Exact a, adot, b, bdot, g, gdot: 1.633769E-05 2.524434E-02 -3.219075E-06 -4.736255E-03 2.545966E-02 -5.041042E-03 # Covariance matrix: 3.9748E-13 9.8722E-11 -1.0189E-13 -9.9539E-12 2.3820E-11 2.8561E-09 9.8722E-11 2.2116E-07 -1.8131E-10 -2.1190E-08 4.5612E-08 3.1853E-06 -1.0189E-13 -1.8131E-10 3.6987E-13 1.4773E-11 -3.7815E-11 -2.8099E-09 -9.9539E-12 -2.1190E-08 1.4773E-11 2.0835E-09 -4.3764E-09 -3.0779E-07 2.3820E-11 4.5612E-08 -3.7815E-11 -4.3764E-09 9.4731E-09 6.8777E-07 2.8561E-09 3.1853E-06 -2.8099E-09 -3.0779E-07 6.8777E-07 6.0597E-05 # lat0 lon0 xBary yBary zBary JD0 11.683407 -150.600691 0.666156 0.148255 -0.716239 2457455.097699 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 301.82237 +/- 11.515 Argument of Peri: 214.24343 +/- 19.994 Long of Asc Node: 75.43527 +/- 0.571 Inclination: 15.50172 +/- 0.139 Eccentricity: 0.21904509 +/- 0.3026 Semi-Major Axis: 43.25189553 +/- 4.8596 Time of Perihelion: 2474240.8474 +/- 1742.7 Perihelion: 33.77778013 +/- 13.6275 Aphelion: 52.72601094 +/- 14.3666 Period (y) 284.4565 +/- 47.94 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -34.47835606 +/- 0.1281 Ecliptic Y -18.66286106 +/- 0.0722 Ecliptic Z 7.95380183 +/- 0.0304 Ecliptic XDOT 0.00170514 +/- 0.0007 Ecliptic YDOT -0.00216211 +/- 0.0004 Ecliptic ZDOT -0.00060854 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 40.00402959 +/- 0.1156 Geocenter to KBO 39.27782718 +/- 0.1502 # Hcoef: 8.69
The following table shows the complete astrometric record for 16EG364. 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 (16EG364) followed by the observatory code and reference code for the source of the astrometry.
2016 03 07.59691 14 05 45.73 -00 18 39.4 25.9g 16EG364 T09 C~89T5 2016 03 07.60915 14 05 45.69 -00 18 39.1 25.8g 16EG364 T09 C~89T5 2016 03 07.61343 14 05 45.70 -00 18 39.1 25.8g 16EG364 T09 C~89T5 2016 03 07.64412 14 05 45.59 -00 18 38.3 26.3g 16EG364 T09 C~89T5 2016 03 16.46636 14 05 16.04 -00 14 31.3 24.3z 16EG364 T09 C~89T5 2016 03 16.49362 14 05 15.93 -00 14 30.6 24.3z 16EG364 T09 C~89T5 2016 03 16.51870 14 05 15.84 -00 14 30.0 24.2z 16EG364 T09 C~89T5 2016 03 16.54620 14 05 15.73 -00 14 29.3 24.7z 16EG364 T09 C~89T5 2016 03 16.56805 14 05 15.65 -00 14 28.6 24.3z 16EG364 T09 C~89T5 2016 04 08.53538 14 03 38.68 -00 03 43.1 24.4r 16EG364 T09 C~89T5 2016 04 08.54746 14 03 38.63 -00 03 42.8 24.6r 16EG364 T09 C~89T5 2016 04 08.57093 14 03 38.52 -00 03 41.9 24.5r 16EG364 T09 C~89T5 2016 04 11.43756 14 03 25.08 -00 02 25.8 23.7i 16EG364 T09 C~89T5 2016 04 11.46218 14 03 24.96 -00 02 25.3 23.9i 16EG364 T09 C~89T5 2016 04 11.50575 14 03 24.76 -00 02 24.2 24.3i 16EG364 T09 C~89T5 2016 04 11.52732 14 03 24.65 -00 02 23.6 24.1i 16EG364 T09 C~89T5 2016 04 11.55443 14 03 24.51 -00 02 23.0 24.1i 16EG364 T09 C~89T5
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 0.06
2 0.0000 -0.67 -0.15 0.07 0.01
3 0.0000 -0.53 0.22 0.13 0.03
4 0.0001 -2.35 0.04 0.30 -0.09
5 0.0243 -503.73 0.06 78.39 0.17
6 0.0244 -505.52 -0.03 78.47 0.06
7 0.0244 -506.99 0.06 78.57 -0.03
8 0.0245 -508.78 -0.02 78.65 -0.14
9 0.0246 -510.15 -0.02 78.89 -0.06
10 0.0874 -2098.33 -0.09 180.28 -0.12
11 0.0875 -2099.14 0.02 180.30 -0.11
12 0.0875 -2101.00 -0.05 180.57 0.15
13 0.0954 -2316.50 -0.04 182.08 0.15
14 0.0955 -2318.37 -0.01 181.93 0.01
15 0.0956 -2321.56 0.14 181.92 0.02
16 0.0956 -2323.32 0.04 181.91 0.02
17 0.0957 -2325.50 -0.06 181.75 -0.13
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.