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: 16SU55 # Created Wed Apr 24 01:17:59 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 32 observations of 32 # Arc: 7.05y # First observation: 2013/10/02 # Last observation: 2020/10/20 # Chi-squared of fit: 9.64 DOF: 58 RMS: 0.10 # Min/Max residuals: -0.26 0.21 # Exact a, adot, b, bdot, g, gdot: 1.442608E-05 2.408732E-02 5.900850E-06 1.015161E-02 2.628770E-02 6.882930E-04 # Covariance matrix: 3.8804E-13 -1.9211E-13 8.5198E-14 -6.3401E-14 -4.1166E-14 -8.8391E-13 -1.9211E-13 1.2891E-13 -6.8727E-14 4.9953E-14 6.5547E-14 6.9118E-13 8.5198E-14 -6.8727E-14 2.4509E-13 -8.2169E-14 -4.5275E-14 -4.2239E-13 -6.3401E-14 4.9953E-14 -8.2169E-14 3.9317E-14 2.6052E-14 3.0971E-13 -4.1166E-14 6.5547E-14 -4.5275E-14 2.6052E-14 2.2933E-13 3.2955E-13 -8.8391E-13 6.9118E-13 -4.2239E-13 3.0971E-13 3.2955E-13 4.2974E-12 # lat0 lon0 xBary yBary zBary JD0 -16.889878 27.754990 0.323650 -0.275085 -0.906371 2456567.762448 # Heliocentric elements and errors Epoch: 2456568.5000 = 2013/10/03 Mean Anomaly: 139.18014 +/- 0.142 Argument of Peri: 181.08934 +/- 0.139 Long of Asc Node: 61.47242 +/- 0.000 Inclination: 27.75869 +/- 0.000 Eccentricity: 0.03021865 +/- 0.0001 Semi-Major Axis: 38.06515688 +/- 0.0025 Time of Perihelion: 2423404.6740 +/- 34.0 Perihelion: 36.91487910 +/- 0.0032 Aphelion: 39.21543466 +/- 0.0033 Period (y) 234.8549 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.20013373 +/- 0.0006 Ecliptic Y 17.10868754 +/- 0.0003 Ecliptic Z -11.05187166 +/- 0.0002 Ecliptic XDOT -0.00084190 +/- 0.0000 Ecliptic YDOT 0.00239370 +/- 0.0000 Ecliptic ZDOT 0.00099099 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.94995557 +/- 0.0005 Geocenter to KBO 38.04061857 +/- 0.0007 # Hcoef: 7.83
The following table shows the complete astrometric record for 16SU55. 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 (16SU55) followed by the observatory code and reference code for the source of the astrometry.
2013 10 02.26167 02 07 04.707 -05 07 25.65 23.3r 16SU55 W84 C~4ybs 2013 10 02.26305 02 07 04.703 -05 07 25.66 23.4i 16SU55 W84 C~4ybs 2014 08 19.37785 02 13 44.820 -03 44 19.17 23.9r 16SU55 W84 C~4ybs 2015 01 17.06699 02 04 48.540 -04 07 54.75 23.1i 16SU55 W84 C~4ybs 2015 01 19.05770 02 04 48.686 -04 06 48.38 23.8i 16SU55 W84 C~4ybs 2015 10 10.523797 02 15 09.015 -03 07 15.17 23.6r 16SU55 568 C~2TuW 2015 10 10.581358 02 15 08.729 -03 07 16.69 23.7r 16SU55 568 C~2TuW 2015 10 10.605157 02 15 08.615 -03 07 17.30 23.7r 16SU55 568 C~2TuW 2015 10 14.525580 02 14 49.256 -03 08 58.51 24.2g 16SU55 568 C~2TuW 2015 10 14.583178 02 14 48.964 -03 08 59.96 24.3g 16SU55 568 C~2TuW 2015 10 14.606931 02 14 48.841 -03 09 00.53 24.3g 16SU55 568 C~2TuX 2015 12 04.06665 02 10 41.557 -03 20 08.02 23.8r 16SU55 W84 C~4ybs 2016 09 10.40460 02 21 27.677 -01 51 47.47 22.9i 16SU55 W84 C~4ybs 2016 09 11.31942 02 21 24.807 -01 52 13.30 23.8r 16SU55 W84 C~4ybs 2016 09 27.42649 02 20 24.50 -01 59 47.7 24.3g 16SU55 568 C~2eAH 2016 09 27.49838 02 20 24.19 -01 59 49.7 24.4g 16SU55 568 C~2eAH 2016 09 28.43544 02 20 20.17 -02 00 15.9 24.3g 16SU55 568 C~2eAH 2016 09 28.50767 02 20 19.85 -02 00 18.0 24.3g 16SU55 568 C~2eAH 2016 09 28.55513 02 20 19.64 -02 00 19.3 24.2g 16SU55 568 C~2eAH 2016 09 29.44699 02 20 15.77 -02 00 44.2 24.4g 16SU55 568 C~2eAH 2016 09 29.56664 02 20 15.24 -02 00 47.5 24.5g 16SU55 568 C~2eAH 2016 10 27.21542 02 17 59.731 -02 12 12.24 24.0r 16SU55 W84 C~4ybs 2016 11 29.17841 02 15 16.886 -02 18 38.90 23.8r 16SU55 W84 C~4ybs 2017 10 29.26760 02 22 08.888 -01 10 56.19 23.1r 16SU55 W84 C~4ybs 2017 10 29.26898 02 22 08.886 -01 10 56.17 23.8i 16SU55 W84 C~4ybs 2017 12 11.04046 02 18 47.235 -01 16 55.81 23.8r 16SU55 W84 C~4ybs 2017 12 26.11053 02 18 00.652 -01 14 30.51 22.6z 16SU55 W84 C~4ybs 2018 11 07.22958 02 25 41.686 -00 11 41.19 23.4i 16SU55 W84 C~4ybs 2018 11 07.23094 02 25 41.681 -00 11 41.24 23.3r 16SU55 W84 C~4ybs 2018 11 07.23231 02 25 41.672 -00 11 41.14 24.5g 16SU55 W84 C~4ybs 2020 10 20.368140 02 35 48.326 +01 57 35.12 23.6G 16SU55 G37 C~4L11 2020 10 20.447250 02 35 47.916 +01 57 33.42 16SU55 G37 C~4L11
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 0.04
2 0.0000 0.00 0.04 0.00 0.07
3 0.8792 0.00 0.14 0.00 0.01
4 1.2917 0.00 -0.13 0.00 -0.11
5 1.2972 0.00 0.19 0.00 0.21
6 2.0213 0.00 -0.13 0.00 -0.01
7 2.0214 0.00 -0.14 0.00 -0.01
8 2.0215 0.00 -0.09 0.00 0.00
9 2.0322 0.00 -0.15 0.00 0.01
10 2.0324 0.00 -0.15 0.00 0.01
11 2.0324 0.00 -0.19 0.00 0.03
12 2.1706 0.00 0.13 0.00 -0.20
13 2.9408 0.00 0.10 0.00 0.09
14 2.9433 0.00 0.10 0.00 -0.26
15 2.9874 0.00 0.10 0.00 0.03
16 2.9876 0.00 0.14 0.00 0.05
17 2.9902 0.00 0.06 0.00 0.08
18 2.9904 0.00 0.03 0.00 -0.00
19 2.9905 0.00 0.02 0.00 0.02
20 2.9930 0.00 -0.01 0.00 0.00
21 2.9933 0.00 0.05 0.00 0.03
22 3.0690 0.00 0.03 0.00 -0.09
23 3.1593 0.00 -0.06 0.00 -0.14
24 4.0739 0.00 -0.03 0.00 -0.06
25 4.0739 0.00 0.05 0.00 -0.02
26 4.1910 0.00 -0.08 0.00 0.05
27 4.2323 0.00 0.20 0.00 0.02
28 5.0978 0.00 0.01 0.00 0.06
29 5.0978 0.00 0.04 0.00 0.04
30 5.0978 0.00 0.02 0.00 0.16
31 7.0503 0.00 -0.03 0.00 -0.05
32 7.0505 0.00 -0.09 0.00 0.01
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.
16SU55 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 38.252 38.252 38.252 ecceobj 0.029 0.029 0.029 incobj 27.748 27.748 27.748 qmin 36.030 36.015 36.028 qmax 40.219 40.208 40.228 amean 38.030 38.030 38.030 amin 37.750 37.744 37.749 amax 38.312 38.311 38.317 emean 0.037 0.037 0.037 emin 0.026 0.027 0.026 emax 0.050 0.050 0.050 imean 26.227 26.227 26.227 imin 25.567 25.566 25.569 imax 26.871 26.858 26.870 excite_mean 0.444 0.444 0.444 fracstop 1.000 1.000 1.000 cjmean 2.807 2.807 2.807 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 183.1 183.4 183.2 kozaiamp 180.0 180.0 180.0