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: 16SU57 # Created Sun Dec 22 02:10:52 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 40 observations of 40 # Arc: 5.06y # First observation: 2013/11/08 # Last observation: 2018/12/01 # Chi-squared of fit: 11.27 DOF: 74 RMS: 0.09 # Min/Max residuals: -0.25 0.27 # Exact a, adot, b, bdot, g, gdot: 1.501639E-05 2.385877E-02 -5.928992E-06 -9.185343E-03 2.504389E-02 3.962945E-03 # Covariance matrix: 2.4443E-13 -1.4876E-13 -2.8013E-14 3.6735E-14 -2.4647E-14 -8.6795E-13 -1.4876E-13 1.5695E-13 4.0243E-14 -5.2532E-14 2.8418E-14 1.2406E-12 -2.8013E-14 4.0243E-14 1.8961E-13 -6.8774E-14 4.8752E-15 3.6410E-13 3.6735E-14 -5.2532E-14 -6.8774E-14 4.0517E-14 -1.3175E-14 -4.7771E-13 -2.4647E-14 2.8418E-14 4.8752E-15 -1.3175E-14 2.0018E-13 3.2743E-13 -8.6795E-13 1.2406E-12 3.6410E-13 -4.7771E-13 3.2743E-13 1.1288E-11 # lat0 lon0 xBary yBary zBary JD0 -10.654311 31.640631 -0.239676 -0.177363 -0.943561 2456604.727958 # Heliocentric elements and errors Epoch: 2456604.5000 = 2013/11/08 Mean Anomaly: 46.69200 +/- 0.012 Argument of Peri: 142.17121 +/- 0.020 Long of Asc Node: 186.85044 +/- 0.000 Inclination: 23.37961 +/- 0.000 Eccentricity: 0.18686945 +/- 0.0001 Semi-Major Axis: 45.71122533 +/- 0.0049 Time of Perihelion: 2441963.4354 +/- 4.6 Perihelion: 37.16919390 +/- 0.0076 Aphelion: 54.25325677 +/- 0.0087 Period (y) 309.0598 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.09911427 +/- 0.0006 Ecliptic Y 21.29628080 +/- 0.0004 Ecliptic Z -7.38264982 +/- 0.0001 Ecliptic XDOT -0.00117003 +/- 0.0000 Ecliptic YDOT 0.00234483 +/- 0.0000 Ecliptic ZDOT -0.00106681 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.87513246 +/- 0.0005 Geocenter to KBO 39.92984003 +/- 0.0007 # Hcoef: 7.09
The following table shows the complete astrometric record for 16SU57. 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 (16SU57) followed by the observatory code and reference code for the source of the astrometry.
2013 11 08.22718 02 12 36.943 +02 01 52.72 23.1r 16SU57 W84 C~4ybt 2013 11 08.24587 02 12 36.866 +02 01 52.18 23.0i 16SU57 W84 C~4ybt 2013 11 13.19608 02 12 14.490 +01 59 50.35 23.1z 16SU57 W84 C~4ybt 2013 11 23.19826 02 11 31.595 +01 56 17.55 22.7i 16SU57 W84 C~4ybt 2013 12 01.18567 02 11 00.419 +01 54 03.46 24.1g 16SU57 W84 C~4ybt 2014 10 01.34844 02 21 17.780 +02 19 26.44 24.2g 16SU57 W84 C~4ybt 2014 10 21.24508 02 19 51.988 +02 08 35.38 23.5g 16SU57 W84 C~4ybt 2015 01 19.04437 02 15 13.710 +01 51 45.54 22.9i 16SU57 W84 C~4ybt 2015 11 22.13993 02 23 14.449 +01 52 47.20 22.6z 16SU57 W84 C~4ybt 2015 12 17.13495 02 21 43.155 +01 47 30.62 23.6r 16SU57 W84 C~4ybt 2015 12 17.13631 02 21 43.142 +01 47 30.66 22.6i 16SU57 W84 C~4ybt 2016 01 10.07046 02 20 57.700 +01 48 05.59 24.2g 16SU57 W84 C~4ybt 2016 09 09.40569 02 33 53.538 +02 26 37.66 22.3i 16SU57 W84 C~4ybt 2016 09 10.36303 02 33 51.237 +02 26 07.84 23.2r 16SU57 W84 C~4ybt 2016 09 10.36441 02 33 51.242 +02 26 07.69 24.2g 16SU57 W84 C~4ybt 2016 09 27.49056 02 32 59.11 +02 16 48.9 24.0g 16SU57 568 C~2eAJ 2016 09 28.49988 02 32 55.45 +02 16 15.4 23.9g 16SU57 568 C~2eAJ 2016 09 28.63277 02 32 54.95 +02 16 10.9 24.0g 16SU57 568 C~2eAJ 2016 09 29.51179 02 32 51.72 +02 15 41.7 24.0g 16SU57 568 C~2eAJ 2016 09 29.63235 02 32 51.26 +02 15 37.6 24.1g 16SU57 568 C~2eAJ 2016 11 04.17935 02 30 16.137 +01 57 16.22 23.3r 16SU57 W84 C~4ybt 2016 11 04.18072 02 30 16.142 +01 57 16.07 22.9i 16SU57 W84 C~4ybt 2016 11 04.19864 02 30 16.033 +01 57 15.85 24.6g 16SU57 W84 C~4ybt 2016 11 04.20001 02 30 16.034 +01 57 15.57 22.6r 16SU57 W84 C~4ybt 2016 11 04.20137 02 30 16.034 +01 57 15.63 23.3i 16SU57 W84 C~4ybt 2016 11 04.20274 02 30 16.025 +01 57 15.90 24.0g 16SU57 W84 C~4ybt 2016 11 04.20412 02 30 16.016 +01 57 15.56 22.8r 16SU57 W84 C~4ybt 2016 11 04.20551 02 30 16.004 +01 57 15.50 23.2i 16SU57 W84 C~4ybt 2016 11 07.17788 02 30 02.179 +01 55 58.35 23.2i 16SU57 W84 C~4ybt 2016 11 07.17925 02 30 02.176 +01 55 58.11 22.7z 16SU57 W84 C~4ybt 2016 11 07.18063 02 30 02.173 +01 55 58.17 23.5r 16SU57 W84 C~4ybt 2016 11 10.16158 02 29 48.39 +01 54 44.0 22.8z 16SU57 W84 C~3cyl 2016 11 10.17497 02 29 48.319 +01 54 43.63 22.4z 16SU57 W84 C~4ybt 2017 09 18.32393 02 39 08.757 +02 19 36.68 22.4i 16SU57 W84 C~4ybt 2017 10 30.22835 02 36 21.366 +01 57 23.42 22.4z 16SU57 W84 C~4ybt 2017 11 23.15019 02 34 32.037 +01 47 58.62 23.0r 16SU57 W84 C~4ybt 2018 10 28.26554 02 42 09.743 +01 56 07.85 22.3z 16SU57 W84 C~4ybt 2018 11 16.15094 02 40 42.230 +01 48 08.41 22.6i 16SU57 W84 C~4ybt 2018 12 01.08313 02 39 37.358 +01 43 39.74 23.5r 16SU57 W84 C~4ybt 2018 12 01.08452 02 39 37.356 +01 43 39.70 23.9g 16SU57 W84 C~4ybt
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 0.03
2 0.0001 0.00 0.15 0.00 -0.03
3 0.0136 0.00 -0.12 0.00 0.04
4 0.0410 0.00 -0.05 0.00 0.02
5 0.0629 0.00 -0.09 0.00 -0.02
6 0.8956 0.00 0.01 0.00 -0.22
7 0.9501 0.00 0.17 0.00 0.14
8 1.1959 0.00 0.02 0.00 0.11
9 2.0367 0.00 0.11 0.00 -0.13
10 2.1052 0.00 -0.03 0.00 -0.01
11 2.1052 0.00 -0.17 0.00 0.03
12 2.1707 0.00 0.08 0.00 -0.03
13 2.8369 0.00 0.01 0.00 -0.25
14 2.8395 0.00 -0.02 0.00 0.02
15 2.8395 0.00 0.11 0.00 -0.09
16 2.8864 0.00 0.01 0.00 0.01
17 2.8892 0.00 0.02 0.00 0.09
18 2.8895 0.00 -0.03 0.00 0.02
19 2.8919 0.00 -0.01 0.00 0.06
20 2.8923 0.00 -0.05 0.00 -0.02
21 2.9896 0.00 0.01 0.00 -0.03
22 2.9896 0.00 0.19 0.00 -0.15
23 2.9897 0.00 -0.17 0.00 0.11
24 2.9897 0.00 -0.06 0.00 -0.13
25 2.9897 0.00 0.03 0.00 -0.04
26 2.9897 0.00 -0.00 0.00 0.27
27 2.9897 0.00 -0.04 0.00 -0.03
28 2.9897 0.00 -0.12 0.00 -0.06
29 2.9978 0.00 -0.01 0.00 0.17
30 2.9978 0.00 0.04 0.00 -0.04
31 2.9978 0.00 0.09 0.00 0.06
32 3.0060 0.00 0.12 0.00 0.04
33 3.0060 0.00 -0.00 0.00 -0.00
34 3.8606 0.00 0.00 0.00 0.02
35 3.9754 0.00 -0.12 0.00 0.14
36 4.0409 0.00 0.01 0.00 0.15
37 4.9693 0.00 0.06 0.00 0.04
38 5.0210 0.00 0.02 0.00 -0.15
39 5.0619 0.00 -0.00 0.00 -0.02
40 5.0619 0.00 0.06 0.00 -0.04
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.
16SU57 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.001 46.002 46.001 ecceobj 0.192 0.192 0.192 incobj 23.312 23.312 23.312 qmin 36.216 36.311 36.235 qmax 55.390 55.529 55.607 amean 45.651 45.645 45.646 amin 45.259 45.242 45.256 amax 46.093 46.099 46.106 emean 0.188 0.188 0.188 emin 0.173 0.172 0.172 emax 0.203 0.205 0.206 imean 23.299 23.304 23.289 imin 22.815 22.801 22.780 imax 23.734 23.754 23.723 excite_mean 0.438 0.438 0.438 fracstop 1.000 1.000 1.000 cjmean 2.881 2.881 2.881 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 182.1 181.8 181.8 kozaiamp 179.9 180.0 180.0