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: 16EZ365 # Created Tue Apr 1 01:10:44 2025 # Orbit generated from Bernstein formalism # Fitting 22 observations of 22 # Arc: 90.76d # First observation: 2016/03/07 # Last observation: 2016/06/06 Preliminary a, adot, b, bdot, g, gdot: -0.000026 0.026650 -0.000007 -0.000202 0.024868 0.000000 # Chi-squared of fit: 8.10 DOF: 38 RMS: 0.11 # Min/Max residuals: -0.28 0.23 # Exact a, adot, b, bdot, g, gdot: 1.550419E-05 2.409712E-02 -1.731408E-08 -2.412024E-04 2.445367E-02 8.723248E-04 # Covariance matrix: 2.1753E-13 -8.2307E-12 2.0259E-14 -1.1153E-13 -7.0428E-13 1.2066E-10 -8.2307E-12 4.8649E-09 -1.8104E-11 7.9560E-11 8.1816E-10 -7.2703E-09 2.0259E-14 -1.8104E-11 2.0505E-13 -9.6642E-13 -3.1139E-12 1.4556E-11 -1.1153E-13 7.9560E-11 -9.6642E-13 7.6826E-12 1.3499E-11 -9.9588E-11 -7.0428E-13 8.1816E-10 -3.1139E-12 1.3499E-11 1.4246E-10 -3.2340E-10 1.2066E-10 -7.2703E-09 1.4556E-11 -9.9588E-11 -3.2340E-10 1.8396E-07 # lat0 lon0 xBary yBary zBary JD0 11.578850 -151.645515 0.652519 0.149394 -0.728451 2457455.112099 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 34.43433 +/- 21.502 Argument of Peri: 55.02126 +/- 23.565 Long of Asc Node: 115.42073 +/- 0.040 Inclination: 11.37774 +/- 0.000 Eccentricity: 0.03720522 +/- 0.0109 Semi-Major Axis: 42.92876467 +/- 0.1685 Time of Perihelion: 2447623.7433 +/- 6136.0 Perihelion: 41.33159059 +/- 0.4957 Aphelion: 44.52593875 +/- 0.5000 Period (y) 281.2748 +/- 1.66 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -36.22288239 +/- 0.0172 Ecliptic Y -18.80754222 +/- 0.0093 Ecliptic Z 8.20804316 +/- 0.0040 Ecliptic XDOT 0.00119221 +/- 0.0000 Ecliptic YDOT -0.00242924 +/- 0.0000 Ecliptic ZDOT -0.00000684 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.63163251 +/- 0.0156 Geocenter to KBO 40.89365364 +/- 0.0200 # Hcoef: 8.12
The following table shows the complete astrometric record for 16EZ365. 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 (16EZ365) followed by the observatory code and reference code for the source of the astrometry.
2016 03 07.61131 14 01 46.76 -00 03 09.0 25.8g 16EZ365 T09 C~89T9 2016 03 07.62907 14 01 46.69 -00 03 08.3 25.2g 16EZ365 T09 C~89T9 2016 03 07.64195 14 01 46.68 -00 03 08.0 25.0g 16EZ365 T09 C~89T9 2016 03 07.64626 14 01 46.66 -00 03 07.8 25.6g 16EZ365 T09 C~89T9 2016 03 16.46294 14 01 18.19 +00 01 10.9 23.7z 16EZ365 T09 C~89T9 2016 03 16.46636 14 01 18.18 +00 01 11.1 23.9z 16EZ365 T09 C~89T9 2016 03 16.49093 14 01 18.09 +00 01 11.6 24.1z 16EZ365 T09 C~89T9 2016 03 16.54349 14 01 17.90 +00 01 13.3 23.2z 16EZ365 T09 C~89T9 2016 03 16.57637 14 01 17.79 +00 01 14.1 24.1z 16EZ365 T09 C~89T9 2016 03 16.58986 14 01 17.74 +00 01 14.8 23.8z 16EZ365 T09 C~89T9 2016 03 16.60069 14 01 17.70 +00 01 15.1 23.7z 16EZ365 T09 C~89T9 2016 04 15.47312 13 59 13.89 +00 15 38.8 22.8y 16EZ365 T09 C~89T9 2016 04 15.50154 13 59 13.76 +00 15 39.5 23.2y 16EZ365 T09 C~89T9 2016 04 15.53400 13 59 13.60 +00 15 40.5 23.5y 16EZ365 T09 C~89T9 2016 04 15.54480 13 59 13.55 +00 15 40.7 23.5y 16EZ365 T09 C~89T9 2016 06 05.38217 13 55 44.69 +00 29 33.0 24.1r 16EZ365 T09 C~89T9 2016 06 05.40134 13 55 44.63 +00 29 33.0 24.3r 16EZ365 T09 C~89T9 2016 06 05.41197 13 55 44.61 +00 29 32.8 24.4r 16EZ365 T09 C~89T9 2016 06 05.41411 13 55 44.58 +00 29 32.8 24.6r 16EZ365 T09 C~89T9 2016 06 06.34511 13 55 41.81 +00 29 36.2 25.5g 16EZ365 T09 C~89T9 2016 06 06.35361 13 55 41.78 +00 29 36.3 25.4g 16EZ365 T09 C~89T9 2016 06 06.37484 13 55 41.71 +00 29 36.2 26.2g 16EZ365 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 0.02 0.00 -0.03
2 0.0000 -1.23 -0.28 0.29 0.06
3 0.0001 -1.47 0.15 0.52 0.15
4 0.0001 -1.83 0.02 0.60 0.18
5 0.0242 -492.42 -0.01 93.44 -0.08
6 0.0242 -492.63 -0.02 93.57 0.02
7 0.0243 -494.07 0.04 93.57 -0.21
8 0.0245 -497.33 -0.03 94.17 -0.09
9 0.0245 -499.16 0.14 94.34 -0.21
10 0.0246 -500.10 0.02 94.73 0.06
11 0.0246 -500.77 0.01 94.80 0.03
12 0.1064 -2542.88 0.04 253.78 0.04
13 0.1065 -2544.95 0.08 253.75 0.00
14 0.1066 -2547.55 -0.11 253.85 0.08
15 0.1066 -2548.32 -0.08 253.77 0.00
16 0.2458 -5775.68 -0.05 -63.12 0.12
17 0.2458 -5776.53 -0.04 -63.44 0.05
18 0.2459 -5776.74 0.23 -63.73 -0.10
19 0.2459 -5777.16 -0.10 -63.89 -0.23
20 0.2484 -5817.30 0.05 -75.25 0.08
21 0.2484 -5817.76 -0.03 -75.31 0.13
22 0.2485 -5818.71 -0.05 -75.77 -0.05
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.
16EZ365 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.439 42.997 41.905 ecceobj 0.028 0.043 0.021 incobj 11.378 11.378 11.379 qmin 40.477 40.473 39.788 qmax 45.145 46.316 44.865 amean 42.712 43.278 42.175 amin 42.388 42.940 41.857 amax 43.047 43.626 42.509 emean 0.033 0.047 0.029 emin 0.019 0.034 0.007 emax 0.049 0.062 0.056 imean 9.884 9.838 9.836 imin 9.128 9.234 8.987 imax 10.618 10.504 10.816 excite_mean 0.175 0.177 0.174 fracstop 1.000 1.000 1.000 cjmean 3.050 3.056 3.045 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 179.8 180.8 177.5 kozaiamp 180.0 180.0 180.0