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: 17SE279 # Created Wed Dec 25 02:10:57 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 14 observations of 14 # Arc: 5.92y # First observation: 2016/09/26 # Last observation: 2022/08/27 # Chi-squared of fit: 7.73 DOF: 22 RMS: 0.13 # Min/Max residuals: -0.23 0.30 # Exact a, adot, b, bdot, g, gdot: 2.055342E-05 3.296279E-02 -1.463597E-06 -1.870068E-03 2.585789E-02 -8.124165E-03 # Covariance matrix: 4.1307E-13 -3.1831E-13 -5.4684E-15 1.2168E-14 5.2301E-14 -1.1087E-12 -3.1831E-13 6.4692E-13 7.2637E-14 -5.0337E-14 1.3139E-12 3.2350E-12 -5.4684E-15 7.2637E-14 2.1941E-13 -5.5412E-14 3.2954E-13 4.5962E-13 1.2168E-14 -5.0337E-14 -5.5412E-14 2.6455E-14 -1.7147E-13 -2.9151E-13 5.2301E-14 1.3139E-12 3.2954E-13 -1.7147E-13 6.9880E-12 8.8012E-12 -1.1087E-12 3.2350E-12 4.5962E-13 -2.9151E-13 8.8012E-12 1.7682E-11 # lat0 lon0 xBary yBary zBary JD0 11.668023 -33.110071 -0.597984 0.163874 -0.792682 2457657.568219 # Heliocentric elements and errors Epoch: 2457658.5000 = 2016/09/27 Mean Anomaly: 356.79976 +/- 0.010 Argument of Peri: 137.20386 +/- 0.010 Long of Asc Node: 220.66220 +/- 0.001 Inclination: 11.94354 +/- 0.000 Eccentricity: 0.73930754 +/- 0.0005 Semi-Major Axis: 142.52768234 +/- 0.3008 Time of Perihelion: 2463183.4310 +/- 1950.2 Perihelion: 37.15589227 +/- 0.1090 Aphelion: 247.89947242 +/- 0.5287 Period (y) 1701.5983 +/- 5.39 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.72542553 +/- 0.0032 Ecliptic Y -20.63240670 +/- 0.0021 Ecliptic Z 7.82116796 +/- 0.0008 Ecliptic XDOT 0.00123622 +/- 0.0000 Ecliptic YDOT 0.00335482 +/- 0.0000 Ecliptic ZDOT -0.00036791 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.46941138 +/- 0.0029 Geocenter to KBO 38.67314411 +/- 0.0040 # Hcoef: 7.68
The following table shows the complete astrometric record for 17SE279. 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 (17SE279) followed by the observatory code and reference code for the source of the astrometry.
2016 09 26.06743 21 40 35.222 -01 33 40.00 23.3r 17SE279 W84 C~55do 2016 09 26.06881 21 40 35.230 -01 33 39.99 23.2i 17SE279 W84 C~55do 2016 09 26.07017 21 40 35.213 -01 33 40.15 24.5g 17SE279 W84 C~55do 2017 09 27.08187 21 47 51.763 -01 02 08.06 23.5i 17SE279 W84 C~55do 2017 10 10.10439 21 47 15.847 -01 08 31.76 23.8r 17SE279 W84 C~55do 2017 10 11.12015 21 47 13.552 -01 09 00.44 23.3i 17SE279 W84 C~55do 2017 10 21.04069 21 46 56.019 -01 13 26.12 23.9i 17SE279 W84 C~55do 2017 10 22.03949 21 46 54.713 -01 13 51.38 23.8r 17SE279 W84 C~55do 2018 09 18.20691 21 55 50.585 -00 24 53.46 22.8z 17SE279 W84 C~55do 2018 10 28.00559 21 54 10.300 -00 44 03.73 22.8i 17SE279 W84 C~55do 2018 10 28.00698 21 54 10.292 -00 44 03.88 24.0r 17SE279 W84 C~55do 2022 08 27.233850 22 28 21.007 +02 01 41.24 23.3G 17SE279 G37 C~5nL3 2022 08 27.280950 22 28 20.789 +02 01 39.80 17SE279 G37 C~5nL3 2022 08 27.327770 22 28 20.569 +02 01 38.59 17SE279 G37 C~5nL3
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 -0.10 0.00 0.04
2 0.0000 0.00 0.09 0.00 0.09
3 0.0000 0.00 -0.10 0.00 -0.03
4 1.0021 0.00 -0.17 0.00 -0.18
5 1.0377 0.00 0.30 0.00 -0.12
6 1.0405 0.00 -0.11 0.00 -0.13
7 1.0677 0.00 0.29 0.00 0.14
8 1.0704 0.00 0.02 0.00 0.02
9 1.9771 0.00 0.14 0.00 0.08
10 2.0861 0.00 -0.13 0.00 0.14
11 2.0861 0.00 -0.23 0.00 0.02
12 5.9170 0.00 -0.01 0.00 0.03
13 5.9171 0.00 0.01 0.00 -0.09
14 5.9172 0.00 -0.01 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.
17SE279 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 146.547 146.543 146.551 ecceobj 0.747 0.747 0.747 incobj 11.943 11.943 11.943 qmin 35.841 35.652 35.718 qmax 264.542 264.230 265.289 amean 144.379 143.021 142.159 amin 140.631 137.861 137.725 amax 150.870 150.709 151.248 emean 0.742 0.739 0.737 emin 0.733 0.725 0.726 emax 0.753 0.753 0.754 imean 12.705 12.967 13.199 imin 12.422 11.990 12.042 imax 12.983 13.910 13.969 excite_mean 0.774 0.772 0.772 fracstop 1.000 1.000 1.000 cjmean 3.071 3.071 3.071 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 166.0 211.5 203.5 kozaiamp 26.1 78.0 68.9