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: 15TP361 # Created Sun Dec 22 02:10:31 2024 # Orbit generated from Bernstein formalism # Fitting 21 observations of 21 # Arc: 2.87y # First observation: 2013/10/13 # Last observation: 2016/08/25 Preliminary a, adot, b, bdot, g, gdot: 0.000098 0.022522 -0.000032 -0.002738 0.023850 0.000000 # Chi-squared of fit: 3.10 DOF: 36 RMS: 0.07 # Min/Max residuals: -0.16 0.15 # Exact a, adot, b, bdot, g, gdot: 1.465465E-05 2.270473E-02 -2.105261E-06 -2.773364E-03 2.446778E-02 2.634221E-03 # Covariance matrix: 1.0346E-12 -9.6210E-13 -4.2511E-14 7.4244E-14 -4.2418E-13 -8.9680E-12 -9.6210E-13 1.4368E-12 9.8493E-14 -1.6739E-13 1.5229E-12 1.9515E-11 -4.2511E-14 9.8493E-14 6.0851E-13 -3.0331E-13 1.6109E-13 1.6540E-12 7.4244E-14 -1.6739E-13 -3.0331E-13 1.8193E-13 -2.6442E-13 -2.7787E-12 -4.2418E-13 1.5229E-12 1.6109E-13 -2.6442E-13 3.5860E-12 2.9357E-11 -8.9680E-12 1.9515E-11 1.6540E-12 -2.7787E-12 2.9357E-11 3.1887E-10 # lat0 lon0 xBary yBary zBary JD0 -6.854134 13.653070 -0.105104 -0.118247 -0.984768 2456578.715098 # Heliocentric elements and errors Epoch: 2456570.5000 = 2013/10/05 Mean Anomaly: 111.81208 +/- 0.158 Argument of Peri: 99.26372 +/- 0.151 Long of Asc Node: 150.21700 +/- 0.004 Inclination: 9.65872 +/- 0.001 Eccentricity: 0.12954107 +/- 0.0006 Semi-Major Axis: 39.42790256 +/- 0.0064 Time of Perihelion: 2428484.4813 +/- 39.0 Perihelion: 34.32036978 +/- 0.0259 Aphelion: 44.53543535 +/- 0.0263 Period (y) 247.5789 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 40.36971649 +/- 0.0030 Ecliptic Y 9.91737710 +/- 0.0008 Ecliptic Z -4.87764548 +/- 0.0004 Ecliptic XDOT -0.00035746 +/- 0.0000 Ecliptic YDOT 0.00252767 +/- 0.0000 Ecliptic ZDOT -0.00034315 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.85522433 +/- 0.0029 Geocenter to KBO 40.87006915 +/- 0.0032 # Hcoef: 7.48
The following table shows the complete astrometric record for 15TP361. 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 (15TP361) followed by the observatory code and reference code for the source of the astrometry.
2013 10 13.21432 01 00 52.759 -00 55 56.70 23.4i 15TP361 W84 C~52UG 2014 10 03.30739 01 06 40.306 -00 29 37.76 23.1r 15TP361 W84 C~52UG 2014 10 21.25242 01 05 19.574 -00 38 14.97 23.5r 15TP361 W84 C~52UG 2014 10 21.25516 01 05 19.565 -00 38 14.90 23.0i 15TP361 W84 C~52UG 2014 11 16.02735 01 03 35.408 -00 47 37.49 23.7i 15TP361 W84 C~52UG 2015 09 04.30277 01 13 37.055 +00 06 17.09 22.9z 15TP361 W84 C~52UG 2015 10 10.288962 01 11 09.873 -00 11 49.25 24.1r 15TP361 568 C~2TuU 2015 10 10.333304 01 11 09.664 -00 11 50.59 23.8r 15TP361 568 C~2TuU 2015 10 10.365520 01 11 09.517 -00 11 51.49 23.7r 15TP361 568 C~2TuU 2015 10 10.367656 01 11 09.508 -00 11 51.56 23.6r 15TP361 568 C~2TuU 2015 10 10.397632 01 11 09.366 -00 11 52.47 23.6r 15TP361 568 C~2TuU 2015 10 10.406203 01 11 09.328 -00 11 52.72 23.5r 15TP361 568 C~2TuU 2015 10 14.271856 01 10 51.860 -00 13 44.71 24.4g 15TP361 568 C~2TuU 2015 10 14.313316 01 10 51.673 -00 13 45.94 24.3g 15TP361 568 C~2TuU 2015 10 14.345429 01 10 51.521 -00 13 46.82 24.3g 15TP361 568 C~2TuU 2015 10 14.377439 01 10 51.373 -00 13 47.75 24.4g 15TP361 568 C~2TuU 2015 10 14.385968 01 10 51.338 -00 13 48.00 24.4g 15TP361 568 C~2TuU 2015 11 02.12028 01 09 28.956 -00 21 53.95 23.3r 15TP361 W84 C~52UG 2016 08 16.40088 01 19 21.950 +00 35 03.56 23.0i 15TP361 W84 C~52UG 2016 08 16.40224 01 19 21.968 +00 35 03.38 24.1r 15TP361 W84 C~52UG 2016 08 25.39991 01 19 00.765 +00 31 21.75 23.2z 15TP361 W84 C~52UG
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 0.06
2 0.9722 5419.07 0.11 -560.09 0.03
3 1.0213 4101.63 -0.13 -568.54 -0.08
4 1.0213 4101.54 -0.03 -568.42 0.03
5 1.0919 2442.86 0.07 -482.91 -0.01
6 1.8921 12029.55 -0.03 -992.90 -0.12
7 1.9906 9566.66 0.06 -1140.12 -0.01
8 1.9907 9563.25 -0.04 -1140.14 -0.01
9 1.9908 9560.86 -0.01 -1140.12 0.03
10 1.9908 9560.71 0.00 -1140.13 0.01
11 1.9909 9558.39 -0.07 -1140.15 0.01
12 1.9909 9557.76 -0.05 -1140.16 0.00
13 2.0015 9272.22 0.04 -1141.99 0.02
14 2.0016 9269.16 0.06 -1142.03 -0.04
15 2.0017 9266.71 0.01 -1141.96 0.02
16 2.0018 9264.30 -0.00 -1141.96 0.01
17 2.0018 9263.71 0.05 -1141.99 -0.02
18 2.0531 7933.89 -0.06 -1111.69 -0.09
19 2.8424 17496.30 -0.16 -1404.67 0.11
20 2.8424 17496.48 0.07 -1404.94 -0.15
21 2.8670 17114.82 0.10 -1486.47 0.15
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.
15TP361 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.635 39.655 39.614 ecceobj 0.129 0.129 0.129 incobj 9.635 9.635 9.636 qmin 32.966 32.913 32.943 qmax 46.246 46.218 46.136 amean 39.457 39.457 39.457 amin 39.137 39.132 39.131 amax 39.829 39.816 39.833 emean 0.141 0.142 0.141 emin 0.121 0.123 0.119 emax 0.161 0.162 0.161 imean 8.609 8.548 8.666 imin 7.912 7.913 7.918 imax 9.300 9.313 9.362 excite_mean 0.206 0.206 0.206 fracstop 1.000 1.000 1.000 cjmean 3.004 3.004 3.004 libcent 0 179.3 179.5 179.4 libamp 0 24.8 23.7 33.1 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 181.2 180.7 181.0 kozaiamp 179.9 180.0 179.9