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: 14TW115 # Created Sun Dec 22 02:10:06 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 14 observations of 14 # Arc: 8.15y # First observation: 2014/10/03 # Last observation: 2022/11/28 # Chi-squared of fit: 4.15 DOF: 22 RMS: 0.10 # Min/Max residuals: -0.29 0.19 # Exact a, adot, b, bdot, g, gdot: 1.504273E-05 2.446063E-02 1.567485E-06 2.513502E-03 2.490976E-02 1.868061E-03 # Covariance matrix: 3.8553E-13 -9.2713E-14 -1.8069E-14 -1.0098E-14 2.4294E-13 -4.1936E-13 -9.2713E-14 1.2874E-13 -1.3253E-14 1.4838E-14 4.8307E-14 6.6124E-13 -1.8069E-14 -1.3253E-14 2.0680E-13 -3.3855E-14 -4.8772E-14 -6.1410E-14 -1.0098E-14 1.4838E-14 -3.3855E-14 1.3101E-14 1.7218E-15 8.4789E-14 2.4294E-13 4.8307E-14 -4.8772E-14 1.7218E-15 4.8654E-13 1.3020E-13 -4.1936E-13 6.6124E-13 -6.1410E-14 8.4789E-14 1.3020E-13 3.7623E-12 # lat0 lon0 xBary yBary zBary JD0 -22.412413 22.294454 0.218697 -0.373012 -0.904882 2456933.789668 # Heliocentric elements and errors Epoch: 2456934.5000 = 2014/10/04 Mean Anomaly: 72.47094 +/- 0.055 Argument of Peri: 203.33551 +/- 0.064 Long of Asc Node: 97.07302 +/- 0.001 Inclination: 22.57818 +/- 0.000 Eccentricity: 0.07144654 +/- 0.0001 Semi-Major Axis: 41.74931974 +/- 0.0048 Time of Perihelion: 2437099.4218 +/- 15.3 Perihelion: 38.76647550 +/- 0.0057 Aphelion: 44.73216399 +/- 0.0062 Period (y) 269.7630 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.32409567 +/- 0.0010 Ecliptic Y 14.25006699 +/- 0.0004 Ecliptic Z -15.30605856 +/- 0.0004 Ecliptic XDOT -0.00075144 +/- 0.0000 Ecliptic YDOT 0.00259483 +/- 0.0000 Ecliptic ZDOT 0.00017722 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.05031066 +/- 0.0009 Geocenter to KBO 40.14489822 +/- 0.0011 # Hcoef: 7.54
The following table shows the complete astrometric record for 14TW115. 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 (14TW115) followed by the observatory code and reference code for the source of the astrometry.
2014 10 03.28889 01 55 51.383 -12 08 24.68 23.9i 14TW115 W84 C~55SO 2014 10 03.29303 01 55 51.354 -12 08 24.75 24.3r 14TW115 W84 C~55SO 2014 11 21.22856 01 52 03.748 -12 23 18.97 23.8r 14TW115 W84 C~55SO 2014 11 21.22993 01 52 03.738 -12 23 19.13 23.4i 14TW115 W84 C~55SO 2014 12 12.16843 01 50 50.271 -12 20 44.12 23.4i 14TW115 W84 C~55SO 2014 12 20.14654 01 50 30.631 -12 18 14.80 23.3r 14TW115 W84 C~55SO 2016 09 07.29378 02 07 30.109 -10 33 50.04 23.9r 14TW115 W84 C~55SO 2017 10 16.24533 02 09 54.862 -10 15 30.08 23.8r 14TW115 W84 C~55SO 2017 12 14.07040 02 05 42.201 -10 22 53.00 23.0i 14TW115 W84 C~55SO 2018 01 09.08918 02 04 54.811 -10 12 38.40 22.6r 14TW115 W84 C~55SO 2018 11 28.18958 02 11 34.202 -09 45 18.81 24.0r 14TW115 W84 C~55SO 2022 11 28.103600 02 31 01.961 -07 04 46.43 23.7G 14TW115 G37 C~677R 2022 11 28.154790 02 31 01.743 -07 04 46.32 14TW115 G37 C~677R 2022 11 28.206870 02 31 01.517 -07 04 46.73 14TW115 G37 C~677R
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 0.09 0.00 0.04
2 0.0000 0.00 -0.06 0.00 0.11
3 0.1340 0.00 0.01 0.00 0.14
4 0.1340 0.00 -0.06 0.00 -0.02
5 0.1913 0.00 -0.11 0.00 -0.04
6 0.2132 0.00 0.09 0.00 -0.11
7 1.9302 0.00 0.03 0.00 -0.00
8 3.0362 0.00 -0.05 0.00 0.05
9 3.1972 0.00 0.01 0.00 -0.29
10 3.2684 0.00 0.13 0.00 0.10
11 4.1530 0.00 0.01 0.00 -0.00
12 8.1528 0.00 -0.04 0.00 -0.03
13 8.1530 0.00 -0.00 0.00 0.19
14 8.1531 0.00 -0.01 0.00 -0.11
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.
14TW115 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.109 42.110 42.109 ecceobj 0.076 0.076 0.076 incobj 22.587 22.587 22.587 qmin 37.965 37.963 37.936 qmax 45.943 45.940 45.905 amean 41.849 41.849 41.849 amin 41.531 41.532 41.530 amax 42.190 42.192 42.186 emean 0.076 0.076 0.076 emin 0.064 0.064 0.064 emax 0.089 0.089 0.089 imean 20.820 20.819 20.820 imin 20.382 20.383 20.379 imax 21.340 21.340 21.337 excite_mean 0.363 0.363 0.363 fracstop 1.000 1.000 1.000 cjmean 2.918 2.918 2.918 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 188.5 188.5 188.6 kozaiamp 180.0 180.0 179.9