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: 16EB366 # Created Wed May 21 01:10:48 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 28 observations of 31 # Arc: 90.78d # First observation: 2016/03/07 # Last observation: 2016/06/06 # Chi-squared of fit: 12.25 DOF: 50 RMS: 0.12 # Min/Max residuals: -0.26 0.25 # Exact a, adot, b, bdot, g, gdot: 1.529756E-05 2.046148E-02 2.093052E-07 5.347456E-04 2.187342E-02 -7.859255E-03 # Covariance matrix: 1.2610E-13 4.4439E-12 -2.8544E-14 1.5298E-13 9.9193E-13 2.3293E-11 4.4439E-12 1.5641E-09 -9.6187E-12 5.3931E-11 3.1420E-10 8.1891E-09 -2.8544E-14 -9.6187E-12 1.1273E-13 -3.3804E-13 -1.9342E-12 -5.0361E-11 1.5298E-13 5.3931E-11 -3.3804E-13 1.8651E-12 1.0833E-11 2.8237E-10 9.9193E-13 3.1420E-10 -1.9342E-12 1.0833E-11 6.3278E-11 1.6451E-09 2.3293E-11 8.1891E-09 -5.0361E-11 2.8237E-10 1.6451E-09 4.2876E-08 # lat0 lon0 xBary yBary zBary JD0 11.186270 -151.997981 0.648017 0.145161 -0.733310 2457455.105679 # Heliocentric elements and errors Epoch: 2457454.5000 = 2016/03/07 Mean Anomaly: 317.97106 +/- 0.470 Argument of Peri: 168.56502 +/- 0.530 Long of Asc Node: 125.37627 +/- 0.014 Inclination: 11.11588 +/- 0.000 Eccentricity: 0.40825052 +/- 0.0097 Semi-Major Axis: 57.10128442 +/- 0.4153 Time of Perihelion: 2475854.3050 +/- 1532.7 Perihelion: 33.78965548 +/- 0.6077 Aphelion: 80.41291337 +/- 0.8069 Period (y) 431.4962 +/- 4.71 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -40.56631048 +/- 0.0144 Ecliptic Y -20.83803829 +/- 0.0076 Ecliptic Z 8.86920810 +/- 0.0032 Ecliptic XDOT 0.00206584 +/- 0.0000 Ecliptic YDOT -0.00180909 +/- 0.0000 Ecliptic ZDOT -0.00012517 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 46.46005917 +/- 0.0130 Geocenter to KBO 45.71787282 +/- 0.0166 # Hcoef: 7.48
The following table shows the complete astrometric record for 16EB366. 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 (16EB366) followed by the observatory code and reference code for the source of the astrometry.
2016 03 07.60489 13 59 56.06 -00 17 56.4 24.9g 16EB366 T09 C~89T9 2016 03 07.61131 13 59 56.04 -00 17 56.3 24.6g 16EB366 T09 C~89T9 2016 03 07.62907 13 59 56.01 -00 17 55.9 24.4g 16EB366 T09 C~89T9 2016 03 07.64195 13 59 55.97 -00 17 55.4 25.4g 16EB366 T09 C~89T9 2016 03 16.46294 13 59 30.02 -00 14 00.1 23.5z 16EB366 T09 C~89T9 2016 03 16.49093 13 59 29.92 -00 13 59.6 23.6z 16EB366 T09 C~89T9 2016 03 16.51046 13 59 29.86 -00 13 59.1 23.6z 16EB366 T09 C~89T9 2016 03 16.51602 13 59 29.85 -00 13 58.7 23.4z 16EB366 T09 C~89T9 2016 03 16.54079 13 59 29.77 -00 13 58.2 23.6z 16EB366 T09 C~89T9 2016 03 16.54349 13 59 29.76 -00 13 58.1 23.4z 16EB366 T09 C~89T9 2016 03 16.56535 13 59 29.68 -00 13 57.4 24.2z 16EB366 T09 C~89T9 2016 03 16.57637 13 59 29.64 -00 13 57.2 23.5z 16EB366 T09 C~89T9 2016 03 16.58986 13 59 29.59 -00 13 57.0 23.4z 16EB366 T09 C~89T9 2016 04 15.47312 13 57 37.53 -00 00 48.6 24.2y 16EB366 T09 C~89T9 2016 04 15.48536 13 57 37.48 -00 00 48.2 24.0y 16EB366 T09 C~89T9 2016 04 15.50154 13 57 37.42 -00 00 47.9 24.6y 16EB366 T09 C~89T9 2016 04 15.52858 13 57 37.32 -00 00 47.2 23.8y 16EB366 T09 C~89T9 2016 04 15.53131 13 57 37.30 -00 00 47.2 23.4y 16EB366 T09 C~89T9 2016 04 15.53940 13 57 37.28 -00 00 46.9 24.1y 16EB366 T09 C~89T9 2016 06 05.36722 13 54 29.09 +00 12 17.5 24.2r 16EB366 T09 C~89T9 2016 06 05.38217 13 54 29.02 +00 12 17.6 24.2r 16EB366 T09 C~89T9 2016 06 05.39709 13 54 29.00 +00 12 17.6 24.0r 16EB366 T09 C~89T9 2016 06 05.40134 13 54 28.98 +00 12 17.6 24.0r 16EB366 T09 C~89T9 2016 06 05.41197 13 54 28.95 +00 12 17.6 24.0r 16EB366 T09 C~89T9 2016 06 06.33647 13 54 26.46 +00 12 21.1 25.4g 16EB366 T09 C~89T9 2016 06 06.35361 13 54 26.40 +00 12 21.5 24.8g 16EB366 T09 C~89T9 2016 06 06.37484 13 54 26.34 +00 12 21.5 25.2g 16EB366 T09 C~89T9 2016 06 06.38765 13 54 26.31 +00 12 21.8 25.1g 16EB366 T09 C~89T9 2025 04 23.37985 14 40 26.015 -03 39 54.52 23.4G 16EB366 G37 2025 04 23.41548 14 40 25.868 -03 39 53.74 16EB366 G37 2025 04 23.45888 14 40 25.664 -03 39 52.87 16EB366 G37
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 -0.08 0.00 0.07
2 0.0000 0.00 -0.12 0.00 0.00
3 0.0001 0.00 0.16 0.00 -0.06
4 0.0001 0.00 0.10 0.00 0.10
5 0.0243 0.00 0.02 0.00 0.14
6 0.0243 0.00 -0.11 0.00 -0.12
7 0.0244 0.00 -0.06 0.00 -0.14
8 0.0244 0.00 0.06 0.00 0.10
9 0.0245 0.00 0.08 0.00 -0.06
10 0.0245 0.00 0.06 0.00 -0.04
11 0.0245 0.00 -0.07 0.00 0.07
12 0.0246 0.00 -0.13 0.00 -0.03
13 0.0246 0.00 -0.22 0.00 -0.19
14 0.1064 0.00 -0.19 0.00 0.02
15 0.1064 0.00 -0.17 0.00 0.12
16 0.1065 0.00 -0.06 0.00 0.03
17 0.1066 0.00 0.13 0.00 0.07
18 0.1066 0.00 0.00 0.00 0.00
19 0.1066 0.00 0.21 0.00 0.11
20 0.2458 0.00 0.21 0.00 -0.01
21 0.2458 0.00 -0.21 0.00 0.03
22 0.2458 0.00 0.11 0.00 -0.03
23 0.2458 0.00 -0.01 0.00 -0.05
24 0.2459 0.00 -0.01 0.00 -0.09
25 0.2484 0.00 0.06 0.00 -0.26
26 0.2485 0.00 -0.13 0.00 0.08
27 0.2485 0.00 -0.15 0.00 0.00
28 0.2485 0.00 -0.08 0.00 0.25
29 9.1274 0.00 ( 133.49) 0.00 ( -39.68)
30 9.1275 0.00 ( 133.67) 0.00 ( -39.73)
31 9.1276 0.00 ( 133.51) 0.00 ( -39.88)
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.
16EB366 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 56.293 56.293 56.294 ecceobj 0.407 0.407 0.407 incobj 11.122 11.122 11.122 qmin 32.613 32.454 32.346 qmax 81.700 83.939 84.039 amean 54.369 56.920 55.880 amin 53.111 54.719 53.267 amax 57.736 58.490 58.845 emean 0.384 0.410 0.400 emin 0.361 0.385 0.364 emax 0.418 0.435 0.429 imean 8.683 7.985 8.331 imin 7.381 6.659 6.713 imax 10.456 9.692 9.953 excite_mean 0.412 0.433 0.426 fracstop 1.000 1.000 1.000 cjmean 3.007 3.013 3.009 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 182.8 182.9 172.3 kozaiamp 180.0 180.0 180.0