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: 16EE366 # Created Sat May 10 01:10:45 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 28 observations of 28 # Arc: 9.13y # First observation: 2016/03/07 # Last observation: 2025/04/23 # Chi-squared of fit: 13.66 DOF: 50 RMS: 0.12 # Min/Max residuals: -0.24 0.37 # Exact a, adot, b, bdot, g, gdot: 1.768547E-05 2.876182E-02 -2.017110E-07 4.035731E-04 2.563649E-02 -1.471739E-02 # Covariance matrix: 1.4245E-13 -1.2361E-13 -3.0658E-16 -2.8427E-15 9.1810E-14 -3.9453E-13 -1.2361E-13 9.5706E-13 -4.2403E-15 1.9214E-14 1.0208E-13 3.2223E-12 -3.0658E-16 -4.2403E-15 5.8755E-14 -7.6837E-15 -1.6914E-15 -1.4369E-14 -2.8427E-15 1.9214E-14 -7.6837E-15 7.3766E-15 1.3203E-15 6.5177E-14 9.1810E-14 1.0208E-13 -1.6914E-15 1.3203E-15 1.6729E-13 3.4463E-13 -3.9453E-13 3.2223E-12 -1.4369E-14 6.5177E-14 3.4463E-13 1.0929E-11 # lat0 lon0 xBary yBary zBary JD0 10.839255 -151.844124 0.650022 0.140390 -0.732464 2457455.105679 # Heliocentric elements and errors Epoch: 2457454.5000 = 2016/03/07 Mean Anomaly: 349.62462 +/- 0.005 Argument of Peri: 154.65418 +/- 0.010 Long of Asc Node: 121.90004 +/- 0.001 Inclination: 10.66952 +/- 0.000 Eccentricity: 0.70948561 +/- 0.0001 Semi-Major Axis: 100.13757227 +/- 0.0292 Time of Perihelion: 2468003.1204 +/- 155.5 Perihelion: 29.09140606 +/- 0.0135 Aphelion: 171.18373849 +/- 0.0510 Period (y) 1002.0832 +/- 0.44 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -34.74523044 +/- 0.0005 Ecliptic Y -17.85915879 +/- 0.0003 Ecliptic Z 7.33542621 +/- 0.0001 Ecliptic XDOT 0.00281745 +/- 0.0000 Ecliptic YDOT -0.00198287 +/- 0.0000 Ecliptic ZDOT -0.00025323 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.74943970 +/- 0.0005 Geocenter to KBO 39.00727765 +/- 0.0006 # Hcoef: 8.21
The following table shows the complete astrometric record for 16EE366. 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 (16EE366) followed by the observatory code and reference code for the source of the astrometry.
2016 03 07.60489 14 00 00.77 -00 40 37.0 25.1g 16EE366 T09 C~89T9 2016 03 07.60702 14 00 00.76 -00 40 37.0 25.0g 16EE366 T09 C~89T9 2016 03 07.62208 14 00 00.72 -00 40 36.7 25.1g 16EE366 T09 C~89T9 2016 03 07.62907 14 00 00.71 -00 40 36.5 24.8g 16EE366 T09 C~89T9 2016 03 07.64195 14 00 00.67 -00 40 36.2 25.1g 16EE366 T09 C~89T9 2016 03 16.46294 13 59 31.73 -00 36 12.7 23.4z 16EE366 T09 C~89T9 2016 03 16.51046 13 59 31.53 -00 36 11.2 24.2z 16EE366 T09 C~89T9 2016 03 16.53534 13 59 31.45 -00 36 10.4 23.7z 16EE366 T09 C~89T9 2016 03 16.56535 13 59 31.34 -00 36 09.5 23.5z 16EE366 T09 C~89T9 2016 03 16.58986 13 59 31.25 -00 36 08.9 24.2z 16EE366 T09 C~89T9 2016 04 15.48268 13 57 24.61 -00 21 20.2 23.1y 16EE366 T09 C~89T9 2016 04 15.48536 13 57 24.61 -00 21 19.9 24.0y 16EE366 T09 C~89T9 2016 04 15.51502 13 57 24.46 -00 21 19.2 23.3y 16EE366 T09 C~89T9 2016 04 15.52858 13 57 24.40 -00 21 18.8 23.2y 16EE366 T09 C~89T9 2016 06 05.36722 13 53 51.86 -00 06 40.6 24.2r 16EE366 T09 C~89T9 2016 06 05.37793 13 53 51.82 -00 06 40.5 24.3r 16EE366 T09 C~89T9 2016 06 05.38217 13 53 51.80 -00 06 40.5 24.4r 16EE366 T09 C~89T9 2016 06 05.39496 13 53 51.77 -00 06 40.6 24.3r 16EE366 T09 C~89T9 2016 06 05.39709 13 53 51.76 -00 06 40.5 24.2r 16EE366 T09 C~89T9 2016 06 05.41197 13 53 51.72 -00 06 40.5 24.4r 16EE366 T09 C~89T9 2016 06 06.33647 13 53 48.94 -00 06 36.8 24.7g 16EE366 T09 C~89T9 2016 06 06.34936 13 53 48.91 -00 06 36.6 24.6g 16EE366 T09 C~89T9 2016 06 06.35361 13 53 48.89 -00 06 36.9 25.2g 16EE366 T09 C~89T9 2016 06 06.36850 13 53 48.86 -00 06 36.6 24.5g 16EE366 T09 C~89T9 2017 03 23.342107 14 05 26.621 -01 06 50.44 24.3V 16EE366 W84 C~8eUp 2017 03 26.334030 14 05 14.710 -01 05 19.18 24.3V 16EE366 W84 C~8eUp 2025 04 23.39287 15 01 26.979 -05 57 31.73 23.4G 16EE366 G37 2025 04 23.47136 15 01 26.582 -05 57 29.71 16EE366 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 0.04 0.00 0.08
2 0.0000 0.00 -0.01 0.00 0.02
3 0.0000 0.00 0.08 0.00 -0.12
4 0.0001 0.00 0.25 0.00 -0.12
5 0.0001 0.00 0.24 0.00 -0.20
6 0.0243 0.00 0.37 0.00 -0.05
7 0.0244 0.00 -0.02 0.00 0.01
8 0.0245 0.00 0.14 0.00 0.06
9 0.0245 0.00 0.14 0.00 0.05
10 0.0246 0.00 0.14 0.00 -0.10
11 0.1064 0.00 -0.02 0.00 -0.05
12 0.1064 0.00 0.17 0.00 0.17
13 0.1065 0.00 0.03 0.00 0.06
14 0.1066 0.00 0.09 0.00 0.09
15 0.2458 0.00 0.19 0.00 -0.00
16 0.2458 0.00 0.09 0.00 0.05
17 0.2458 0.00 -0.01 0.00 0.03
18 0.2458 0.00 0.13 0.00 -0.12
19 0.2458 0.00 0.08 0.00 -0.03
20 0.2459 0.00 0.18 0.00 -0.09
21 0.2484 0.00 0.03 0.00 -0.08
22 0.2484 0.00 0.18 0.00 0.07
23 0.2485 0.00 0.07 0.00 -0.24
24 0.2485 0.00 0.30 0.00 0.00
25 1.0424 0.00 0.16 0.00 -0.11
26 1.0506 0.00 0.02 0.00 -0.14
27 9.1274 0.00 0.06 0.00 -0.00
28 9.1276 0.00 0.24 0.00 -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.
16EE366 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 97.225 97.223 97.227 ecceobj 0.703 0.703 0.703 incobj 10.673 10.673 10.673 qmin 28.413 28.413 28.417 qmax 182.120 175.435 175.364 amean 101.362 99.788 99.505 amin 97.225 97.223 97.228 amax 105.696 102.285 102.249 emean 0.713 0.709 0.708 emin 0.702 0.701 0.701 emax 0.724 0.716 0.715 imean 9.207 9.187 9.193 imin 9.064 9.098 9.099 imax 9.366 9.297 9.329 excite_mean 0.731 0.727 0.726 fracstop 0.009 0.003 0.002 cjmean 2.839 2.838 2.838 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 157.7 156.0 155.7 kozaiamp 2.9 1.1 0.8