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: 16EH362 # Created Tue Jan 21 02:10:51 2025 # Orbit generated from Bernstein formalism # Fitting 20 observations of 20 # Arc: 4.20y # First observation: 2015/01/21 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: 0.001435 0.025511 0.000051 0.000514 0.027749 0.000000 # Chi-squared of fit: 7.11 DOF: 34 RMS: 0.11 # Min/Max residuals: -0.24 0.16 # Exact a, adot, b, bdot, g, gdot: 1.476944E-05 2.824504E-02 -1.277218E-07 5.851291E-04 3.012586E-02 2.786921E-02 # Covariance matrix: 9.3555E-13 -7.1538E-13 1.8234E-14 -1.7314E-14 -9.0993E-14 -6.2042E-12 -7.1538E-13 1.4679E-12 -1.6112E-14 2.9018E-14 1.4126E-12 1.3680E-11 1.8234E-14 -1.6112E-14 4.3169E-13 -1.7692E-13 2.2310E-15 -1.9463E-13 -1.7314E-14 2.9018E-14 -1.7692E-13 8.9657E-14 2.0353E-14 3.0528E-13 -9.0993E-14 1.4126E-12 2.2310E-15 2.0353E-14 2.1709E-12 1.2669E-11 -6.2042E-12 1.3680E-11 -1.9463E-13 3.0528E-13 1.2669E-11 1.3821E-10 # lat0 lon0 xBary yBary zBary JD0 -8.476361 150.591063 0.486536 -0.125582 -0.843709 2457044.103451 # Heliocentric elements and errors Epoch: 2457040.5000 = 2015/01/18 Mean Anomaly: 15.78720 +/- 0.026 Argument of Peri: 169.70759 +/- 0.009 Long of Asc Node: 233.89138 +/- 0.004 Inclination: 8.30621 +/- 0.000 Eccentricity: 0.78024297 +/- 0.0003 Semi-Major Axis: 68.18544338 +/- 0.0727 Time of Perihelion: 2448021.9147 +/- 2.6 Perihelion: 14.98423063 +/- 0.0244 Aphelion: 121.38665613 +/- 0.1307 Period (y) 563.0484 +/- 0.90 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.10807039 +/- 0.0014 Ecliptic Y 16.96458073 +/- 0.0008 Ecliptic Z -4.89287066 +/- 0.0002 Ecliptic XDOT -0.00345342 +/- 0.0000 Ecliptic YDOT -0.00100756 +/- 0.0000 Ecliptic ZDOT -0.00032064 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.04433792 +/- 0.0013 Geocenter to KBO 33.19407764 +/- 0.0016 # Hcoef: 9.46
The following table shows the complete astrometric record for 16EH362. 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 (16EH362) followed by the observatory code and reference code for the source of the astrometry.
2015 01 21.602673 09 58 39.19 +03 19 20.3 16EH362 T09 C~86tJ 2016 03 04.426185 10 00 46.11 +03 08 11.9 16EH362 T09 C~86tJ 2016 03 07.28113 10 00 30.91 +03 09 48.7 26.2g 16EH362 T09 C~89T1 2016 03 07.28866 10 00 30.87 +03 09 48.9 25.6g 16EH362 T09 C~89T1 2016 03 07.29878 10 00 30.81 +03 09 49.0 26.3g 16EH362 T09 C~89T1 2016 03 09.299522 10 00 20.35 +03 10 57.2 16EH362 T09 C~86tK 2017 03 04.31448 10 06 33.90 +02 37 53.4 24.0z 16EH362 T09 C~86tK 2017 03 04.34002 10 06 33.75 +02 37 54.4 24.1z 16EH362 T09 C~86tK 2017 03 04.47432 10 06 33.02 +02 37 58.6 24.5i 16EH362 T09 C~86tK 2017 03 04.49602 10 06 32.91 +02 37 59.5 24.6i 16EH362 T09 C~86tK 2017 03 06.529560 10 06 22.21 +02 39 07.1 16EH362 T09 C~86tK 2017 03 22.38749 10 05 04.70 +02 47 59.7 25.2z 16EH362 T09 C~86tK 2017 03 22.41317 10 05 04.57 +02 48 00.5 24.9z 16EH362 T09 C~86tK 2017 03 22.43886 10 05 04.44 +02 48 01.4 24.5z 16EH362 T09 C~86tK 2017 03 22.48627 10 05 04.24 +02 48 02.9 24.4z 16EH362 T09 C~86tK 2017 03 29.289242 10 04 35.37 +02 51 45.4 16EH362 T09 C~86tK 2017 03 29.303176 10 04 35.30 +02 51 45.5 16EH362 T09 C~86tK 2018 01 17.494013 10 15 56.07 +01 49 17.2 16EH362 T09 C~86tK 2019 04 05.337293 10 14 52.02 +01 58 50.2 16EH362 T09 C~86tK 2019 04 05.378076 10 14 51.87 +01 58 51.5 16EH362 T09 C~86tK
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 0.01 0.00 0.09
2 1.1166 2014.66 0.12 33.45 0.11
3 1.1244 1767.53 -0.07 45.09 0.12
4 1.1244 1766.90 -0.05 45.07 0.07
5 1.1244 1766.02 -0.04 44.85 -0.19
6 1.1299 1595.41 -0.00 54.36 -0.04
7 2.1156 7535.32 0.12 143.04 0.05
8 2.1156 7532.86 -0.11 143.19 0.13
9 2.1160 7521.13 -0.10 143.31 -0.16
10 2.1161 7519.26 -0.06 143.58 0.05
11 2.1216 7345.20 0.09 151.02 -0.20
12 2.1651 6069.70 0.12 245.36 0.06
13 2.1651 6067.59 -0.04 245.43 -0.05
14 2.1652 6065.45 -0.24 245.60 -0.07
15 2.1653 6062.12 0.00 245.96 -0.06
16 2.1839 5578.79 0.15 303.81 0.16
17 2.1840 5577.77 0.09 303.54 -0.23
18 2.9894 16480.85 0.03 357.08 0.05
19 4.2019 15374.21 0.00 558.00 0.04
20 4.2020 15371.64 -0.02 558.44 0.09
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.
16EH362 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 68.909 69.056 68.763 ecceobj 0.784 0.784 0.783 incobj 8.298 8.298 8.298 qmin 14.462 14.540 14.396 qmax 128.554 123.207 127.440 amean 65.192 66.612 67.145 amin 61.069 64.126 64.666 amax 71.704 69.056 71.180 emean 0.768 0.774 0.778 emin 0.745 0.763 0.767 emax 0.793 0.784 0.790 imean 10.794 9.942 9.863 imin 8.978 9.099 8.997 imax 13.553 11.792 11.622 excite_mean 0.791 0.794 0.797 fracstop 0.063 0.046 0.044 cjmean 2.314 2.308 2.299 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 224.3 208.2 208.4 kozaiamp 50.0 34.3 36.0