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: 15KO360 # Created Tue Apr 1 01:10:30 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 23 observations of 23 # Arc: 6.96y # First observation: 2014/06/28 # Last observation: 2021/06/13 # Chi-squared of fit: 5.53 DOF: 40 RMS: 0.09 # Min/Max residuals: -0.27 0.18 # Exact a, adot, b, bdot, g, gdot: 1.839759E-05 3.213127E-02 -2.790234E-06 -3.057574E-03 2.715353E-02 -5.917005E-03 # Covariance matrix: 4.0044E-13 -3.5914E-13 -2.4678E-14 3.0778E-14 -1.1046E-13 -1.2809E-12 -3.5914E-13 8.2298E-13 5.5183E-14 -7.5677E-14 -5.5540E-13 3.1328E-12 -2.4678E-14 5.5183E-14 1.1070E-13 -3.3592E-14 -3.3753E-14 2.1465E-13 3.0778E-14 -7.5677E-14 -3.3592E-14 2.4997E-14 5.2872E-14 -2.9449E-13 -1.1046E-13 -5.5540E-13 -3.3753E-14 5.2872E-14 1.1103E-12 -2.1742E-12 -1.2809E-12 3.1328E-12 2.1465E-13 -2.9449E-13 -2.1742E-12 1.2191E-11 # lat0 lon0 xBary yBary zBary JD0 -1.835941 -127.707671 -0.705702 -0.023435 -0.734038 2456836.503148 # Heliocentric elements and errors Epoch: 2456836.5000 = 2014/06/28 Mean Anomaly: 347.58979 +/- 0.011 Argument of Peri: 230.50600 +/- 0.027 Long of Asc Node: 34.90744 +/- 0.001 Inclination: 5.66788 +/- 0.000 Eccentricity: 0.41465226 +/- 0.0001 Semi-Major Axis: 61.32877835 +/- 0.0198 Time of Perihelion: 2462883.9400 +/- 82.3 Perihelion: 35.89866166 +/- 0.0144 Aphelion: 86.75889503 +/- 0.0293 Period (y) 480.2912 +/- 0.23 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -22.40574681 +/- 0.0009 Ecliptic Y -30.13226018 +/- 0.0011 Ecliptic Z -1.17995402 +/- 0.0000 Ecliptic XDOT 0.00292872 +/- 0.0000 Ecliptic YDOT -0.00150582 +/- 0.0000 Ecliptic ZDOT -0.00028889 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.56822224 +/- 0.0010 Geocenter to KBO 36.82779402 +/- 0.0014 # Hcoef: 6.54
The following table shows the complete astrometric record for 15KO360. 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 (15KO360) followed by the observatory code and reference code for the source of the astrometry.
2014 06 28.002370 15 17 31.27 -20 06 59.5 15KO360 W84 C~7gsQ 2014 06 28.148012 15 17 30.75 -20 06 58.0 15KO360 W84 C~7gsQ 2015 05 20.17185 15 28 03.84 -20 56 06.7 21.2G 15KO360 W84 C~6c0d 2015 05 20.18140 15 28 03.79 -20 56 06.7 15KO360 W84 C~6c0d 2015 05 20.18468 15 28 03.77 -20 56 06.5 15KO360 W84 C~6c0d 2015 05 21.18326 15 27 58.38 -20 55 49.0 21.8G 15KO360 W84 C~6c0d 2015 05 21.18650 15 27 58.35 -20 55 49.0 15KO360 W84 C~6c0d 2015 05 21.18977 15 27 58.34 -20 55 49.1 15KO360 W84 C~6c0d 2015 05 21.22039 15 27 58.18 -20 55 48.3 15KO360 W84 C~6c0d 2015 05 22.25230 15 27 52.61 -20 55 30.2 22.0G 15KO360 W84 C~6c0d 2015 05 22.25874 15 27 52.57 -20 55 30.1 15KO360 W84 C~6c0d 2015 05 22.26524 15 27 52.54 -20 55 30.0 15KO360 W84 C~6c0d 2015 05 23.16514 15 27 47.70 -20 55 14.2 22.2G 15KO360 W84 C~6c0d 2015 05 23.17157 15 27 47.67 -20 55 14.0 15KO360 W84 C~6c0d 2015 05 23.17807 15 27 47.63 -20 55 13.9 15KO360 W84 C~6c0d 2015 05 24.164317 15 27 42.35 -20 54 56.5 15KO360 W84 C~7gsQ 2015 05 24.177295 15 27 42.28 -20 54 56.4 15KO360 W84 C~7gsQ 2015 07 15.050963 15 24 09.40 -20 42 11.5 15KO360 W84 C~7gsQ 2015 07 15.060862 15 24 09.39 -20 42 11.2 15KO360 W84 C~7gsQ 2017 05 01.182906 15 45 15.75 -22 14 23.8 15KO360 W84 C~7gsQ 2017 05 01.184969 15 45 15.74 -22 14 23.8 15KO360 W84 C~7gsQ 2021 06 13.033491 16 14 01.61 -24 18 25.0 22.6V 15KO360 W84 C~7gsQ 2021 06 13.164130 16 14 00.88 -24 18 23.2 22.5V 15KO360 W84 C~7gsQ
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 0.12 0.00 0.18
2 0.0004 0.00 0.05 0.00 -0.27
3 0.8930 0.00 -0.04 0.00 0.11
4 0.8930 0.00 -0.00 0.00 -0.06
5 0.8930 0.00 -0.03 0.00 0.09
6 0.8958 0.00 0.04 0.00 0.05
7 0.8958 0.00 -0.14 0.00 -0.01
8 0.8958 0.00 -0.02 0.00 -0.17
9 0.8959 0.00 0.10 0.00 0.09
10 0.8987 0.00 0.03 0.00 0.03
11 0.8987 0.00 -0.04 0.00 0.02
12 0.8987 0.00 0.04 0.00 -0.00
13 0.9012 0.00 -0.11 0.00 -0.04
14 0.9012 0.00 -0.03 0.00 0.04
15 0.9012 0.00 -0.10 0.00 0.03
16 0.9039 0.00 0.01 0.00 0.04
17 0.9040 0.00 0.02 0.00 -0.09
18 1.0460 0.00 -0.12 0.00 -0.11
19 1.0460 0.00 0.06 0.00 0.10
20 2.8424 0.00 0.08 0.00 0.01
21 2.8424 0.00 0.09 0.00 -0.02
22 6.9597 0.00 0.05 0.00 -0.05
23 6.9601 0.00 -0.09 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.
15KO360 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 60.810 60.809 60.810 ecceobj 0.411 0.411 0.411 incobj 5.686 5.686 5.686 qmin 35.302 35.300 35.301 qmax 89.107 89.424 89.427 amean 61.323 61.291 61.321 amin 60.368 60.098 60.149 amax 62.579 62.727 62.647 emean 0.412 0.412 0.412 emin 0.399 0.398 0.397 emax 0.425 0.426 0.428 imean 5.453 5.493 5.556 imin 5.099 4.960 5.065 imax 6.139 6.168 6.188 excite_mean 0.423 0.423 0.423 fracstop 1.000 1.000 1.000 cjmean 3.080 3.079 3.079 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 176.2 187.7 187.0 kozaiamp 180.0 180.0 180.0