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: 15OY190 # Created Thu Sep 4 01:10:47 2025 # Orbit generated from Bernstein formalism # Fitting 25 observations of 25 # Arc: 0.84y # First observation: 2014/09/18 # Last observation: 2015/07/23 Preliminary a, adot, b, bdot, g, gdot: -0.000033 0.030148 -0.000003 -0.013478 0.027745 0.000000 # Chi-squared of fit: 9.44 DOF: 44 RMS: 0.11 # Min/Max residuals: -0.27 0.18 # Exact a, adot, b, bdot, g, gdot: 1.657419E-05 2.951171E-02 -8.349548E-06 -1.353549E-02 2.858297E-02 1.584034E-03 # Covariance matrix: 2.9791E-13 1.8091E-11 5.2899E-14 -6.1438E-12 7.5647E-12 5.2269E-10 1.8091E-11 3.4611E-09 8.5925E-12 -1.0760E-09 1.0729E-09 9.0860E-08 5.2899E-14 8.5925E-12 1.5763E-13 -2.8881E-12 2.8820E-12 2.3056E-10 -6.1438E-12 -1.0760E-09 -2.8881E-12 3.3819E-10 -3.4706E-10 -2.8556E-08 7.5647E-12 1.0729E-09 2.8820E-12 -3.4706E-10 3.8748E-10 2.9419E-08 5.2269E-10 9.0860E-08 2.3056E-10 -2.8556E-08 2.9419E-08 2.4140E-06 # lat0 lon0 xBary yBary zBary JD0 10.890111 -23.312647 -0.316682 0.180774 -0.939109 2456918.773388 # Heliocentric elements and errors Epoch: 2456910.5000 = 2014/09/10 Mean Anomaly: 15.05173 +/- 10.784 Argument of Peri: 133.94043 +/- 16.277 Long of Asc Node: 178.94260 +/- 0.015 Inclination: 26.80985 +/- 0.015 Eccentricity: 0.18181938 +/- 0.0219 Semi-Major Axis: 43.41616303 +/- 0.3698 Time of Perihelion: 2452541.7266 +/- 3129.5 Perihelion: 35.52226328 +/- 0.9970 Aphelion: 51.31006278 +/- 1.0457 Period (y) 286.0786 +/- 3.65 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 32.55247329 +/- 0.0217 Ecliptic Y -13.68202199 +/- 0.0094 Ecliptic Z 6.60948293 +/- 0.0045 Ecliptic XDOT 0.00147579 +/- 0.0001 Ecliptic YDOT 0.00243559 +/- 0.0001 Ecliptic ZDOT -0.00124438 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.92417720 +/- 0.0200 Geocenter to KBO 34.98587165 +/- 0.0241 # Hcoef: 9.39
The following table shows the complete astrometric record for 15OY190. 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 (15OY190) followed by the observatory code and reference code for the source of the astrometry.
2014 09 18.27261 22 17 40.67 +01 04 28.0 25.5g 15OY190 T09 C~90Hi 2014 09 18.33407 22 17 40.39 +01 04 25.1 24.6y 15OY190 T09 C~90Hi 2014 09 18.34291 22 17 40.35 +01 04 25.0 25.0y 15OY190 T09 C~90Hi 2014 09 18.35105 22 17 40.31 +01 04 24.6 25.1y 15OY190 T09 C~90Hi 2014 09 18.36196 22 17 40.27 +01 04 24.3 24.4y 15OY190 T09 C~90Hi 2014 09 22.23772 22 17 23.01 +01 01 41.8 25.3r 15OY190 T09 C~90Hi 2014 09 22.25134 22 17 22.97 +01 01 41.3 25.4r 15OY190 T09 C~90Hi 2014 09 22.31871 22 17 22.66 +01 01 38.6 25.0r 15OY190 T09 C~90Hi 2014 09 22.34787 22 17 22.54 +01 01 37.4 24.3i 15OY190 T09 C~90Hi 2014 09 22.35333 22 17 22.52 +01 01 37.1 24.8i 15OY190 T09 C~90Hi 2014 09 22.35878 22 17 22.49 +01 01 37.1 24.7i 15OY190 T09 C~90Hi 2015 07 15.45241 22 30 01.90 +01 31 52.9 25.3r 15OY190 T09 C~8ibn 2015 07 15.46937 22 30 01.84 +01 31 52.6 25.0r 15OY190 T09 C~8ibn 2015 07 15.51059 22 30 01.71 +01 31 51.9 25.0r 15OY190 T09 C~8ibn 2015 07 15.55122 22 30 01.57 +01 31 51.4 25.1r 15OY190 T09 C~8ibn 2015 07 21.51429 22 29 40.74 +01 30 14.1 25.1i 15OY190 T09 C~8ibn 2015 07 21.54697 22 29 40.60 +01 30 13.8 24.7i 15OY190 T09 C~8ibn 2015 07 21.57675 22 29 40.48 +01 30 13.2 25.1i 15OY190 T09 C~8ibn 2015 07 21.60639 22 29 40.38 +01 30 12.4 25.4i 15OY190 T09 C~8ibn 2015 07 22.47331 22 29 37.16 +01 29 56.6 24.4z 15OY190 T09 C~8ibn 2015 07 22.50032 22 29 37.06 +01 29 56.1 24.2z 15OY190 T09 C~8ibn 2015 07 22.51928 22 29 36.98 +01 29 55.6 24.4z 15OY190 T09 C~8ibn 2015 07 23.49053 22 29 33.31 +01 29 37.0 24.1y 15OY190 T09 C~8r6u 2015 07 23.49892 22 29 33.26 +01 29 37.0 24.2y 15OY190 T09 C~8r6u 2015 07 23.52362 22 29 33.17 +01 29 36.3 23.9y 15OY190 T09 C~8r6u
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 -0.05 0.00 0.18
2 0.0002 -4.97 -0.11 -1.17 -0.16
3 0.0002 -5.56 0.00 -1.04 0.08
4 0.0002 -6.27 -0.05 -1.19 0.04
5 0.0002 -6.94 0.15 -1.25 0.13
6 0.0109 -307.27 -0.27 -57.94 -0.12
7 0.0109 -308.01 0.04 -58.18 -0.16
8 0.0111 -313.32 -0.06 -59.00 0.01
9 0.0112 -315.44 0.09 -59.46 -0.02
10 0.0112 -315.83 0.12 -59.63 -0.11
11 0.0112 -316.25 0.13 -59.46 0.13
12 0.8218 10960.35 0.03 -2526.25 0.13
13 0.8219 10959.40 -0.03 -2526.20 0.09
14 0.8220 10957.33 0.05 -2526.14 -0.06
15 0.8221 10955.18 0.04 -2525.84 0.03
16 0.8384 10627.93 0.07 -2502.55 -0.21
17 0.8385 10625.86 -0.05 -2502.06 0.16
18 0.8386 10623.96 -0.16 -2501.97 0.14
19 0.8387 10622.27 -0.08 -2502.16 -0.17
20 0.8411 10571.41 0.05 -2499.27 0.06
21 0.8411 10569.83 0.11 -2499.19 0.04
22 0.8412 10568.53 -0.04 -2499.22 -0.05
23 0.8439 10510.34 0.12 -2496.47 -0.13
24 0.8439 10509.64 -0.06 -2496.20 0.11
25 0.8439 10508.13 -0.04 -2496.36 -0.13
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.
15OY190 quality flag:2 Type: SCATNEAR SCATNEAR SCATEXTD axisobj 43.655 46.359 42.857 ecceobj 0.186 0.287 0.161 incobj 26.731 26.689 26.772 qmin 33.981 32.506 34.786 qmax 54.135 61.559 51.315 amean 43.711 46.655 42.840 amin 43.218 45.926 42.473 amax 44.303 47.259 43.251 emean 0.188 0.281 0.168 emin 0.157 0.257 0.149 emax 0.224 0.303 0.187 imean 26.496 26.787 26.368 imin 25.659 26.085 25.869 imax 27.142 27.501 26.852 excite_mean 0.485 0.531 0.475 fracstop 1.000 1.000 1.000 cjmean 2.807 2.778 2.810 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 182.3 186.8 183.9 kozaiamp 179.9 179.9 180.0