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: 16GR368 # Created Tue May 20 01:10:52 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 26 observations of 26 # Arc: 9.13y # First observation: 2016/03/07 # Last observation: 2025/04/23 # Chi-squared of fit: 14.41 DOF: 46 RMS: 0.13 # Min/Max residuals: -0.44 0.26 # Exact a, adot, b, bdot, g, gdot: 1.505384E-05 2.431351E-02 5.274611E-06 6.423647E-03 2.485484E-02 2.875362E-03 # Covariance matrix: 1.6333E-13 -1.2196E-13 1.6137E-15 -3.4919E-14 1.5133E-13 -5.6632E-13 -1.2196E-13 9.3995E-13 -4.5266E-14 2.7310E-13 8.8002E-14 4.5252E-12 1.6137E-15 -4.5266E-14 6.8534E-14 -2.1420E-14 -1.1859E-14 -2.1881E-13 -3.4919E-14 2.7310E-13 -2.1420E-14 8.6752E-14 2.2564E-14 1.3246E-12 1.5133E-13 8.8002E-14 -1.1859E-14 2.2564E-14 3.2351E-13 3.9780E-13 -5.6632E-13 4.5252E-12 -2.1881E-13 1.3246E-12 3.9780E-13 2.1947E-11 # lat0 lon0 xBary yBary zBary JD0 10.241886 -150.175524 0.671207 0.129364 -0.715183 2457455.125619 # Heliocentric elements and errors Epoch: 2457454.5000 = 2016/03/07 Mean Anomaly: 44.87089 +/- 0.023 Argument of Peri: 338.24285 +/- 0.032 Long of Asc Node: 175.61975 +/- 0.000 Inclination: 17.92722 +/- 0.000 Eccentricity: 0.12672646 +/- 0.0002 Semi-Major Axis: 44.55190677 +/- 0.0072 Time of Perihelion: 2443916.3269 +/- 7.6 Perihelion: 38.90600114 +/- 0.0116 Aphelion: 50.19781241 +/- 0.0126 Period (y) 297.3772 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.31640216 +/- 0.0008 Ecliptic Y -19.47265785 +/- 0.0004 Ecliptic Z 7.15393525 +/- 0.0002 Ecliptic XDOT 0.00117061 +/- 0.0000 Ecliptic YDOT -0.00242292 +/- 0.0000 Ecliptic ZDOT 0.00075264 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.95859198 +/- 0.0007 Geocenter to KBO 40.23356541 +/- 0.0009 # Hcoef: 7.38
The following table shows the complete astrometric record for 16GR368. 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 (16GR368) followed by the observatory code and reference code for the source of the astrometry.
2016 03 07.62483 14 05 20.05 -01 48 28.3 24.3g 16GR368 T09 C~89Tc 2016 03 07.63768 14 05 20.02 -01 48 27.8 24.1g 16GR368 T09 C~89Tc 2016 03 07.63983 14 05 20.00 -01 48 27.6 24.0g 16GR368 T09 C~89Tc 2016 03 16.48552 14 04 52.17 -01 43 46.0 23.1z 16GR368 T09 C~89Tc 2016 03 16.53802 14 04 51.99 -01 43 44.2 22.9z 16GR368 T09 C~89Tc 2016 03 16.56263 14 04 51.90 -01 43 43.5 23.0z 16GR368 T09 C~89Tc 2016 03 16.58446 14 04 51.82 -01 43 42.7 23.2z 16GR368 T09 C~89Tc 2016 04 08.52969 14 03 20.28 -01 31 16.7 23.3r 16GR368 T09 C~89Tc 2016 04 08.55612 14 03 20.16 -01 31 15.8 23.3r 16GR368 T09 C~89Tc 2016 04 08.56457 14 03 20.12 -01 31 15.5 23.2r 16GR368 T09 C~89Tc 2016 04 11.42730 14 03 07.42 -01 29 45.3 23.7i 16GR368 T09 C~89Tc 2016 04 11.45409 14 03 07.29 -01 29 44.7 23.4i 16GR368 T09 C~89Tc 2016 04 11.50036 14 03 07.08 -01 29 43.2 23.0i 16GR368 T09 C~89Tc 2016 04 11.54095 14 03 06.90 -01 29 42.0 23.2i 16GR368 T09 C~89Tc 2016 04 14.51577 14 02 53.51 -01 28 10.1 23.8y 16GR368 T09 C~89Tc 2016 04 14.57188 14 02 53.25 -01 28 08.1 23.1y 16GR368 T09 C~89Tc 2016 04 14.59074 14 02 53.17 -01 28 08.1 23.4y 16GR368 T09 C~89Tc 2016 06 05.36438 13 59 19.09 -01 09 42.5 23.5r 16GR368 T09 C~89Tc 2016 06 05.38004 13 59 19.05 -01 09 42.2 23.4r 16GR368 T09 C~89Tc 2016 06 05.40559 13 59 18.97 -01 09 42.2 23.3r 16GR368 T09 C~89Tc 2016 06 05.40987 13 59 18.96 -01 09 42.0 23.3r 16GR368 T09 C~89Tc 2017 03 25.319509 14 10 06.622 -01 47 20.08 23.6V 16GR368 W84 C~8svV 2017 03 25.327436 14 10 06.588 -01 47 19.68 23.6V 16GR368 W84 C~8svV 2025 04 23.389900 14 53 08.829 -02 33 35.28 23.7G 16GR368 G37 C~8svV 2025 04 23.425260 14 53 08.680 -02 33 34.06 16GR368 G37 C~8svV 2025 04 23.468460 14 53 08.503 -02 33 33.40 16GR368 G37 C~8svV
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 -0.00 0.00 -0.26
2 0.0000 0.00 0.11 0.00 -0.16
3 0.0000 0.00 -0.10 0.00 -0.03
4 0.0243 0.00 -0.13 0.00 0.04
5 0.0244 0.00 -0.06 0.00 0.14
6 0.0245 0.00 -0.11 0.00 0.05
7 0.0245 0.00 -0.16 0.00 0.14
8 0.0874 0.00 0.01 0.00 0.01
9 0.0874 0.00 -0.01 0.00 0.07
10 0.0874 0.00 -0.04 0.00 0.10
11 0.0953 0.00 0.13 0.00 0.19
12 0.0954 0.00 0.01 0.00 -0.05
13 0.0955 0.00 0.03 0.00 0.00
14 0.0956 0.00 0.10 0.00 -0.06
15 0.1037 0.00 0.03 0.00 -0.15
16 0.1039 0.00 0.00 0.00 0.14
17 0.1039 0.00 0.10 0.00 -0.44
18 0.2457 0.00 -0.13 0.00 0.06
19 0.2457 0.00 0.01 0.00 0.22
20 0.2458 0.00 0.01 0.00 -0.02
21 0.2458 0.00 0.06 0.00 0.15
22 1.0478 0.00 0.00 0.00 -0.11
23 1.0478 0.00 -0.04 0.00 0.03
24 9.1274 0.00 -0.19 0.00 0.00
25 9.1274 0.00 -0.03 0.00 0.26
26 9.1276 0.00 0.24 0.00 -0.26
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.
16GR368 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.030 44.030 44.030 ecceobj 0.119 0.119 0.119 incobj 18.008 18.008 18.008 qmin 38.011 38.042 37.966 qmax 50.853 50.868 51.013 amean 44.309 44.310 44.309 amin 43.942 43.937 43.937 amax 44.729 44.729 44.721 emean 0.125 0.125 0.126 emin 0.112 0.111 0.113 emax 0.138 0.139 0.141 imean 17.665 17.654 17.627 imin 17.199 17.200 17.146 imax 18.134 18.113 18.068 excite_mean 0.328 0.328 0.328 fracstop 1.000 1.000 1.000 cjmean 2.973 2.973 2.973 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 178.8 179.0 179.7 kozaiamp 180.0 180.0 180.0