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: 13TP229 # Created Sun Dec 22 02:09:47 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 14 observations of 14 # Arc: 17.27y # First observation: 2001/08/19 # Last observation: 2018/11/26 # Chi-squared of fit: 12.38 DOF: 22 RMS: 0.17 # Min/Max residuals: -0.43 0.25 # Exact a, adot, b, bdot, g, gdot: 1.542631E-05 2.452687E-02 -7.788424E-06 -1.049795E-02 2.592617E-02 -3.082906E-03 # Covariance matrix: 7.2203E-13 -8.9362E-14 -2.4154E-14 1.8174E-14 -2.5457E-14 -1.0152E-13 -8.9362E-14 4.7459E-14 2.2238E-14 -1.6404E-14 1.1266E-13 8.9204E-14 -2.4154E-14 2.2238E-14 6.8114E-13 -5.7261E-14 3.9713E-14 4.9455E-14 1.8174E-14 -1.6404E-14 -5.7261E-14 1.0705E-14 -2.7245E-14 -3.6914E-14 -2.5457E-14 1.1266E-13 3.9713E-14 -2.7245E-14 7.5772E-13 1.3274E-13 -1.0152E-13 8.9204E-14 4.9455E-14 -3.6914E-14 1.3274E-13 2.0400E-13 # lat0 lon0 xBary yBary zBary JD0 -0.275027 -11.371875 0.390260 -0.004582 -0.934682 2452140.744803 # Heliocentric elements and errors Epoch: 2452140.5000 = 2001/08/19 Mean Anomaly: 307.72340 +/- 0.025 Argument of Peri: 247.75349 +/- 0.032 Long of Asc Node: 167.44418 +/- 0.000 Inclination: 23.20214 +/- 0.000 Eccentricity: 0.14666598 +/- 0.0001 Semi-Major Axis: 42.68491486 +/- 0.0060 Time of Perihelion: 2466932.0921 +/- 19.5 Perihelion: 36.42448990 +/- 0.0056 Aphelion: 48.94533983 +/- 0.0072 Period (y) 278.8816 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 38.65561307 +/- 0.0013 Ecliptic Y -8.16599624 +/- 0.0003 Ecliptic Z -0.18546004 +/- 0.0000 Ecliptic XDOT 0.00017769 +/- 0.0000 Ecliptic YDOT 0.00260582 +/- 0.0000 Ecliptic ZDOT -0.00110682 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.50924727 +/- 0.0012 Geocenter to KBO 38.57116826 +/- 0.0013 # Hcoef: 7.68
The following table shows the complete astrometric record for 13TP229. 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 (13TP229) followed by the observatory code and reference code for the source of the astrometry.
2001 08 19.24406 23 18 36.69 -04 45 05.6 22.1R 13TP229 807 C~55Nw 2001 08 19.32752 23 18 36.36 -04 45 08.7 13TP229 807 C~55Nw 2013 10 11.22388 00 31 06.689 -05 04 44.89 24.8g 13TP229 W84 C~55Nw 2013 10 13.22262 00 30 57.274 -05 05 51.69 22.6z 13TP229 W84 C~55Nw 2013 10 13.22399 00 30 57.297 -05 05 51.92 22.9i 13TP229 W84 C~55Nw 2013 11 08.15807 00 29 08.420 -05 17 34.93 23.1r 13TP229 W84 C~55Nw 2013 11 23.13356 00 28 23.525 -05 21 25.34 23.5i 13TP229 W84 C~55Nw 2014 11 13.12408 00 35 26.601 -05 16 47.32 23.6r 13TP229 W84 C~55Nw 2014 11 15.07583 00 35 20.196 -05 17 20.27 23.2i 13TP229 W84 C~55Nw 2015 11 03.09457 00 42 41.769 -05 10 43.42 23.6r 13TP229 W84 C~55Nw 2015 11 03.09593 00 42 41.744 -05 10 43.74 23.5g 13TP229 W84 C~55Nw 2016 09 01.38805 00 54 02.246 -04 31 25.63 23.7r 13TP229 W84 C~55Nw 2016 11 07.20621 00 49 01.293 -05 09 47.99 24.2r 13TP229 W84 C~55Nw 2018 11 26.09365 01 01 19.199 -05 08 19.77 23.9r 13TP229 W84 C~55Nw
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 -0.20 0.00 0.23
2 0.0002 0.00 0.20 0.00 -0.10
3 12.1451 0.00 0.17 0.00 -0.03
4 12.1505 0.00 -0.43 0.00 0.01
5 12.1505 0.00 0.01 0.00 -0.17
6 12.2215 0.00 0.14 0.00 -0.11
7 12.2625 0.00 0.22 0.00 -0.04
8 13.2344 0.00 0.08 0.00 -0.02
9 13.2398 0.00 0.08 0.00 -0.10
10 14.2063 0.00 -0.06 0.00 0.15
11 14.2063 0.00 -0.35 0.00 -0.14
12 15.0367 0.00 0.10 0.00 0.12
13 15.2196 0.00 0.04 0.00 -0.02
14 17.2700 0.00 0.05 0.00 0.25
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.
13TP229 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.890 42.890 42.890 ecceobj 0.148 0.148 0.148 incobj 23.151 23.151 23.151 qmin 35.786 35.804 35.787 qmax 49.803 49.862 49.821 amean 42.646 42.646 42.646 amin 42.297 42.285 42.294 amax 43.038 43.049 43.038 emean 0.140 0.140 0.140 emin 0.122 0.123 0.123 emax 0.158 0.159 0.158 imean 22.803 22.803 22.802 imin 22.227 22.220 22.212 imax 23.329 23.339 23.334 excite_mean 0.412 0.412 0.412 fracstop 1.000 1.000 1.000 cjmean 2.878 2.878 2.878 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 181.0 180.9 180.9 kozaiamp 180.0 179.9 180.0