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 Sat May 10 01:10:48 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 21 observations of 24 # Arc: 89.79d # First observation: 2016/03/07 # Last observation: 2016/06/05 # Chi-squared of fit: 9.43 DOF: 36 RMS: 0.12 # Min/Max residuals: -0.42 0.21 # Exact a, adot, b, bdot, g, gdot: 1.490277E-05 2.429613E-02 5.177340E-06 6.425771E-03 2.485060E-02 2.649371E-03 # Covariance matrix: 1.6745E-13 5.0760E-13 -2.0871E-14 1.4870E-13 2.7947E-13 2.4847E-12 5.0760E-13 1.3344E-10 -4.2941E-12 3.8911E-11 2.6851E-11 6.4667E-10 -2.0871E-14 -4.2941E-12 2.0943E-13 -1.2605E-12 -8.7204E-13 -2.0810E-11 1.4870E-13 3.8911E-11 -1.2605E-12 1.1354E-11 7.8270E-12 1.8858E-10 2.7947E-13 2.6851E-11 -8.7204E-13 7.8270E-12 5.7302E-12 1.3010E-10 2.4847E-12 6.4667E-10 -2.0810E-11 1.8858E-10 1.3010E-10 3.1340E-09 # 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: 43.78780 +/- 0.154 Argument of Peri: 340.32928 +/- 0.292 Long of Asc Node: 175.64796 +/- 0.001 Inclination: 17.93981 +/- 0.000 Eccentricity: 0.11818309 +/- 0.0024 Semi-Major Axis: 44.41685267 +/- 0.0578 Time of Perihelion: 2444303.1380 +/- 52.9 Perihelion: 39.16753193 +/- 0.1195 Aphelion: 49.66617341 +/- 0.1260 Period (y) 296.0260 +/- 0.58 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.32226867 +/- 0.0033 Ecliptic Y -19.47601407 +/- 0.0019 Ecliptic Z 7.15515249 +/- 0.0007 Ecliptic XDOT 0.00119115 +/- 0.0000 Ecliptic YDOT -0.00240947 +/- 0.0000 Ecliptic ZDOT 0.00074857 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.96546431 +/- 0.0030 Geocenter to KBO 40.24043859 +/- 0.0039 # 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 2025 04 23.38990 14 53 08.829 -02 33 35.28 23.7G 16GR368 G37 2025 04 23.42526 14 53 08.680 -02 33 34.06 16GR368 G37 2025 04 23.46846 14 53 08.503 -02 33 33.40 16GR368 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 0.03 0.00 -0.25
2 0.0000 0.00 0.14 0.00 -0.15
3 0.0000 0.00 -0.06 0.00 -0.02
4 0.0243 0.00 -0.10 0.00 0.06
5 0.0244 0.00 -0.03 0.00 0.16
6 0.0245 0.00 -0.09 0.00 0.06
7 0.0245 0.00 -0.13 0.00 0.16
8 0.0874 0.00 -0.02 0.00 0.04
9 0.0874 0.00 -0.04 0.00 0.10
10 0.0874 0.00 -0.07 0.00 0.13
11 0.0953 0.00 0.09 0.00 0.21
12 0.0954 0.00 -0.03 0.00 -0.02
13 0.0955 0.00 -0.01 0.00 0.03
14 0.0956 0.00 0.06 0.00 -0.04
15 0.1037 0.00 -0.02 0.00 -0.12
16 0.1039 0.00 -0.05 0.00 0.16
17 0.1039 0.00 0.05 0.00 -0.42
18 0.2457 0.00 -0.15 0.00 -0.05
19 0.2457 0.00 -0.01 0.00 0.11
20 0.2458 0.00 -0.01 0.00 -0.12
21 0.2458 0.00 0.04 0.00 0.04
22 9.1274 0.00 ( -59.39) 0.00 ( -9.10)
23 9.1274 0.00 ( -59.23) 0.00 ( -8.85)
24 9.1276 0.00 ( -58.96) 0.00 ( -9.37)
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 43.898 43.898 43.898 ecceobj 0.111 0.111 0.111 incobj 18.021 18.021 18.021 qmin 38.288 38.293 38.312 qmax 50.408 50.407 50.332 amean 44.186 44.186 44.183 amin 43.827 43.827 43.825 amax 44.602 44.585 44.572 emean 0.117 0.117 0.117 emin 0.104 0.103 0.104 emax 0.131 0.131 0.130 imean 17.682 17.685 17.681 imin 17.212 17.220 17.216 imax 18.141 18.145 18.135 excite_mean 0.325 0.325 0.325 fracstop 1.000 1.000 1.000 cjmean 2.974 2.974 2.974 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 180.1 180.6 179.5 kozaiamp 180.0 180.0 180.0