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: 16SJ58 # Created Fri Apr 19 01:18:16 2024 # Orbit generated from Bernstein formalism # Fitting 19 observations of 19 # Arc: 4.28y # First observation: 2014/08/19 # Last observation: 2018/12/01 Preliminary a, adot, b, bdot, g, gdot: -0.000274 0.037186 -0.000105 0.009138 0.031007 0.000000 # Chi-squared of fit: 6.23 DOF: 32 RMS: 0.10 # Min/Max residuals: -0.19 0.23 # Exact a, adot, b, bdot, g, gdot: 1.883720E-05 3.609703E-02 4.969860E-06 8.848037E-03 3.063535E-02 -3.914407E-03 # Covariance matrix: 4.0425E-13 -1.8681E-13 3.8396E-14 -3.7534E-14 1.7017E-13 -1.2588E-12 -1.8681E-13 3.2456E-13 -4.1147E-14 8.3505E-14 6.4532E-14 2.6339E-12 3.8396E-14 -4.1147E-14 2.2536E-13 -8.7649E-14 2.0823E-14 -4.1470E-13 -3.7534E-14 8.3505E-14 -8.7649E-14 6.4010E-14 1.2459E-14 7.7868E-13 1.7017E-13 6.4532E-14 2.0823E-14 1.2459E-14 2.7946E-13 2.9145E-13 -1.2588E-12 2.6339E-12 -4.1470E-13 7.7868E-13 2.9145E-13 2.4677E-11 # lat0 lon0 xBary yBary zBary JD0 -16.067529 33.942782 0.939679 -0.105906 -0.368178 2456888.881388 # Heliocentric elements and errors Epoch: 2456880.5000 = 2014/08/11 Mean Anomaly: 339.51304 +/- 0.016 Argument of Peri: 345.53942 +/- 0.032 Long of Asc Node: 81.31007 +/- 0.001 Inclination: 20.63353 +/- 0.000 Eccentricity: 0.27642957 +/- 0.0001 Semi-Major Axis: 43.70328802 +/- 0.0043 Time of Perihelion: 2462885.9359 +/- 4.7 Perihelion: 31.62240700 +/- 0.0048 Aphelion: 55.78416903 +/- 0.0066 Period (y) 288.9212 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.86180848 +/- 0.0005 Ecliptic Y 16.95057159 +/- 0.0003 Ecliptic Z -9.03419243 +/- 0.0002 Ecliptic XDOT -0.00190346 +/- 0.0000 Ecliptic YDOT 0.00260645 +/- 0.0000 Ecliptic ZDOT 0.00085679 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 33.02264776 +/- 0.0004 Geocenter to KBO 32.64203336 +/- 0.0006 # Hcoef: 8.73
The following table shows the complete astrometric record for 16SJ58. 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 (16SJ58) followed by the observatory code and reference code for the source of the astrometry.
2014 08 19.38061 02 28 18.090 -02 19 16.66 23.6r 16SJ58 W84 C~52Zn 2014 09 24.28782 02 26 40.982 -02 38 56.48 23.6g 16SJ58 W84 C~52Zn 2014 09 24.28920 02 26 40.951 -02 38 56.42 24.7r 16SJ58 W84 C~52Zn 2014 10 01.36639 02 26 08.354 -02 42 59.61 24.5g 16SJ58 W84 C~52Zn 2014 12 16.15858 02 19 29.779 -03 02 35.35 24.1g 16SJ58 W84 C~52Zn 2014 12 24.13761 02 19 03.951 -03 00 37.65 24.4r 16SJ58 W84 C~52Zn 2015 12 11.17615 02 27 02.624 -01 53 03.71 24.0g 16SJ58 W84 C~52Zn 2016 09 27.53877 02 40 59.88 -00 18 37.0 24.6g 16SJ58 568 C~2eAJ 2016 09 27.59860 02 40 59.61 -00 18 38.9 24.5g 16SJ58 568 C~2eAJ 2016 09 28.48764 02 40 55.66 -00 19 07.7 24.5g 16SJ58 568 C~2eAJ 2016 09 29.49961 02 40 51.07 -00 19 40.5 24.6g 16SJ58 568 C~2eAJ 2016 09 29.62023 02 40 50.51 -00 19 44.4 24.4g 16SJ58 568 C~2eAJ 2016 10 28.22302 02 38 16.868 -00 33 42.39 24.0g 16SJ58 W84 C~52Zn 2016 11 29.12930 02 35 13.610 -00 41 49.84 24.0r 16SJ58 W84 C~52Zn 2017 10 29.29518 02 45 36.367 +00 38 26.28 23.3i 16SJ58 W84 C~52Zn 2017 10 29.29656 02 45 36.363 +00 38 26.23 23.9r 16SJ58 W84 C~52Zn 2017 11 22.17304 02 43 15.274 +00 31 20.01 23.7r 16SJ58 W84 C~52Zn 2018 12 01.08037 02 49 53.752 +01 43 01.15 23.7r 16SJ58 W84 C~52Zn 2018 12 01.08175 02 49 53.756 +01 43 01.42 24.0g 16SJ58 W84 C~52Zn
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 0.0983 -1763.20 0.13 -633.28 -0.12
3 0.0983 -1763.62 -0.19 -633.07 0.11
4 0.1177 -2304.98 -0.00 -701.52 -0.01
5 0.3252 -8334.68 0.23 154.41 -0.07
6 0.3470 -8661.98 -0.04 392.89 -0.08
7 1.3109 -548.47 -0.18 1858.29 0.13
8 2.1086 13194.63 0.01 3054.59 0.02
9 2.1087 13190.16 0.03 3054.13 0.06
10 2.1112 13124.44 0.05 3046.55 0.10
11 2.1139 13048.29 -0.05 3038.37 0.10
12 2.1143 13039.04 0.01 3037.47 0.09
13 2.1926 10578.66 0.11 3009.44 0.02
14 2.2799 7817.93 -0.02 3459.36 0.06
15 3.1948 18273.98 0.03 4919.86 -0.15
16 3.1948 18273.91 0.09 4919.83 -0.19
17 3.2602 16120.76 -0.14 5217.75 0.00
18 4.2839 23254.93 -0.13 7320.04 -0.11
19 4.2839 23255.08 0.13 7320.28 0.10
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.
16SJ58 quality flag:3 Type: 7:4EII 7:4EEE 7:4EII Type: 7:4EII axisobj 44.076 44.088 44.063 ecceobj 0.280 0.280 0.280 incobj 20.636 20.636 20.636 qmin 31.243 31.247 31.083 qmax 56.772 56.761 57.098 amean 43.725 43.725 43.725 amin 43.319 43.330 43.286 amax 44.244 44.208 44.274 emean 0.213 0.131 0.221 emin 0.069 0.036 0.088 emax 0.284 0.284 0.290 imean 21.094 22.905 20.834 imin 18.882 18.863 18.398 imax 24.078 24.741 24.000 excite_mean 0.424 0.420 0.423 fracstop 1.000 1.000 1.000 cjmean 2.879 2.880 2.880 libcent 0 180.9 184.5 179.0 libamp 0 130.1 170.3 155.7 libcent 1 -180.0 181.5 -180.0 libamp 1 -180.0 120.2 -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 126.5 151.7 140.0 kozaiamp 180.0 180.0 180.0