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: 13RX155 # Created Wed Dec 4 02:09:29 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 18 observations of 18 # Arc: 5.18y # First observation: 2013/09/02 # Last observation: 2018/11/08 # Chi-squared of fit: 5.49 DOF: 30 RMS: 0.10 # Min/Max residuals: -0.19 0.25 # Exact a, adot, b, bdot, g, gdot: 1.566203E-05 2.532690E-02 -8.391911E-06 -1.337846E-02 2.662067E-02 5.967812E-03 # Covariance matrix: 4.5305E-13 -8.5778E-14 -1.2769E-14 1.6513E-14 2.7752E-13 -2.5188E-13 -8.5778E-14 2.6633E-13 8.2951E-14 -1.4713E-13 2.0447E-13 2.2321E-12 -1.2769E-14 8.2951E-14 2.6332E-13 -1.1094E-13 6.4389E-14 7.6537E-13 1.6513E-14 -1.4713E-13 -1.1094E-13 1.1374E-13 -1.2271E-13 -1.3570E-12 2.7752E-13 2.0447E-13 6.4389E-14 -1.2271E-13 5.8708E-13 1.8598E-12 -2.5188E-13 2.2321E-12 7.6537E-13 -1.3570E-12 1.8598E-12 2.0587E-11 # lat0 lon0 xBary yBary zBary JD0 -2.741185 0.327619 0.356647 -0.045109 -0.943942 2456537.779618 # Heliocentric elements and errors Epoch: 2456538.5000 = 2013/09/03 Mean Anomaly: 36.23181 +/- 0.012 Argument of Peri: 126.40779 +/- 0.024 Long of Asc Node: 174.75303 +/- 0.000 Inclination: 27.96188 +/- 0.000 Eccentricity: 0.25988084 +/- 0.0002 Semi-Major Axis: 46.77854840 +/- 0.0067 Time of Perihelion: 2444777.1803 +/- 4.7 Perihelion: 34.62170010 +/- 0.0089 Aphelion: 58.93539670 +/- 0.0112 Period (y) 319.9472 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 38.46798207 +/- 0.0011 Ecliptic Y -0.13362031 +/- 0.0000 Ecliptic Z -1.79684046 +/- 0.0001 Ecliptic XDOT 0.00052617 +/- 0.0000 Ecliptic YDOT 0.00260678 +/- 0.0000 Ecliptic ZDOT -0.00140357 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.51003043 +/- 0.0011 Geocenter to KBO 37.56469850 +/- 0.0011 # Hcoef: 7.25
The following table shows the complete astrometric record for 13RX155. 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 (13RX155) followed by the observatory code and reference code for the source of the astrometry.
2013 09 02.27884 00 05 33.971 -02 23 04.37 24.0g 13RX155 W84 C~52RL 2013 10 13.12737 00 02 27.415 -02 48 51.73 22.7i 13RX155 W84 C~52RL 2013 10 13.12878 00 02 27.413 -02 48 51.50 22.9z 13RX155 W84 C~52RL 2013 11 23.10292 00 00 15.268 -03 06 29.09 23.0i 13RX155 W84 C~52RL 2014 08 18.30134 00 13 02.838 -02 21 24.41 22.3i 13RX155 W84 C~52RL 2014 10 29.18375 00 07 54.111 -03 04 35.69 23.7r 13RX155 W84 C~52RL 2014 11 14.10424 00 07 03.272 -03 11 04.07 22.3z 13RX155 W84 C~52RL 2014 11 17.01999 00 06 55.945 -03 12 00.00 23.1z 13RX155 W84 C~52RL 2015 11 02.09371 00 14 06.442 -03 13 24.85 23.3r 13RX155 W84 C~52RL 2016 11 25.09132 00 19 19.330 -03 28 10.36 23.4i 13RX155 W84 C~52RL 2016 12 05.10133 00 19 04.174 -03 29 45.18 22.9z 13RX155 W84 C~52RL 2017 09 26.29753 00 29 23.187 -03 07 01.22 22.5r 13RX155 W84 C~52RL 2017 09 26.30165 00 29 23.183 -03 07 01.22 22.9i 13RX155 W84 C~52RL 2017 09 27.26030 00 29 18.757 -03 07 37.54 23.7g 13RX155 W84 C~52RL 2017 10 17.23932 00 27 47.556 -03 19 29.02 23.4r 13RX155 W84 C~52RL 2018 09 09.34532 00 36 52.627 -03 02 38.28 23.3r 13RX155 W84 C~52RL 2018 10 28.20656 00 33 15.723 -03 31 26.85 22.9i 13RX155 W84 C~52RL 2018 11 08.17113 00 32 34.263 -03 36 06.97 23.1r 13RX155 W84 C~52RL
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 -0.15 0.00 0.03
2 0.1118 0.00 0.04 0.00 -0.13
3 0.1118 0.00 0.10 0.00 0.15
4 0.2240 0.00 0.01 0.00 -0.04
5 0.9583 0.00 0.07 0.00 0.08
6 1.1551 0.00 -0.03 0.00 -0.07
7 1.1987 0.00 0.07 0.00 -0.08
8 1.2067 0.00 -0.05 0.00 -0.01
9 2.1651 0.00 -0.01 0.00 -0.14
10 3.2302 0.00 -0.19 0.00 0.25
11 3.2576 0.00 0.17 0.00 0.05
12 4.0658 0.00 -0.13 0.00 0.00
13 4.0658 0.00 0.10 0.00 0.16
14 4.0684 0.00 0.04 0.00 0.05
15 4.1231 0.00 0.05 0.00 -0.03
16 5.0187 0.00 -0.01 0.00 -0.10
17 5.1524 0.00 0.00 0.00 -0.08
18 5.1825 0.00 0.01 0.00 -0.05
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.
13RX155 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 47.048 47.049 47.048 ecceobj 0.264 0.264 0.264 incobj 27.891 27.891 27.891 qmin 33.797 33.765 33.792 qmax 60.390 60.529 60.535 amean 46.805 46.853 46.862 amin 46.325 46.417 46.433 amax 47.395 47.395 47.420 emean 0.256 0.257 0.257 emin 0.238 0.239 0.239 emax 0.276 0.277 0.277 imean 27.640 27.625 27.641 imin 27.052 26.999 27.055 imax 28.186 28.123 28.194 excite_mean 0.530 0.530 0.530 fracstop 1.000 1.000 1.000 cjmean 2.778 2.778 2.778 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 182.1 181.6 182.5 kozaiamp 180.0 180.0 180.0