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: 15OX190
# Created Sat Aug 30 01:10:49 2025
# Orbit generated from Bernstein formalism
# Fitting 25 observations of 25
# Arc: 0.84y
# First observation: 2014/09/18
# Last observation: 2015/07/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000019 0.023626 -0.000001 0.003260 0.024641 0.000000
# Chi-squared of fit: 12.19 DOF: 44 RMS: 0.12
# Min/Max residuals: -0.24 0.38
# Exact a, adot, b, bdot, g, gdot:
1.399639E-05 2.316844E-02 1.894154E-06 3.286453E-03 2.518885E-02 -8.870271E-04
# Covariance matrix:
2.6114E-13 1.3757E-11 5.6734E-15 1.2099E-12 6.4325E-12 4.9381E-10
1.3757E-11 2.8838E-09 5.8616E-13 2.1383E-10 9.1478E-10 9.1013E-08
5.6734E-15 5.8616E-13 1.3530E-13 -1.1025E-13 2.8332E-13 2.1130E-11
1.2099E-12 2.1383E-10 -1.1025E-13 1.6740E-11 7.3922E-11 6.9137E-09
6.4325E-12 9.1478E-10 2.8332E-13 7.3922E-11 3.5925E-10 3.0738E-08
4.9381E-10 9.1013E-08 2.1130E-11 6.9137E-09 3.0738E-08 2.9231E-06
# lat0 lon0 xBary yBary zBary JD0
9.375815 -22.458826 -0.301830 0.156673 -0.948288 2456918.738888
# Heliocentric elements and errors
Epoch: 2456910.5000 = 2014/09/10
Mean Anomaly: 197.42492 +/- 30.147
Argument of Peri: 215.20491 +/- 30.233
Long of Asc Node: 289.51635 +/- 0.045
Inclination: 12.15225 +/- 0.008
Eccentricity: 0.11850201 +/- 0.0168
Semi-Major Axis: 36.48368092 +/- 0.1290
Time of Perihelion: 2493259.9536 +/- 6737.8
Perihelion: 32.16029158 +/- 0.6247
Aphelion: 40.80707026 +/- 0.6309
Period (y) 220.3719 +/- 1.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 37.20026309 +/- 0.0272
Ecliptic Y -15.04995836 +/- 0.0113
Ecliptic Z 6.46763147 +/- 0.0049
Ecliptic XDOT 0.00081563 +/- 0.0002
Ecliptic YDOT 0.00238128 +/- 0.0001
Ecliptic ZDOT 0.00033685 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.64715337 +/- 0.0253
Geocenter to KBO 39.70011024 +/- 0.0299
# Hcoef: 8.85
The following table shows the complete astrometric record for 15OX190. 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 (15OX190) followed by the observatory code and reference code for the source of the astrometry.
2014 09 18.23811 22 23 01.56 -00 01 35.3 25.9g 15OX190 T09 C~90Hi 2014 09 18.25107 22 23 01.49 -00 01 35.8 25.1g 15OX190 T09 C~90Hi 2014 09 18.25323 22 23 01.49 -00 01 35.8 25.2g 15OX190 T09 C~90Hi 2014 09 18.26617 22 23 01.43 -00 01 36.1 25.5g 15OX190 T09 C~90Hi 2014 09 18.34018 22 23 01.11 -00 01 38.5 24.0y 15OX190 T09 C~90Hi 2014 09 18.37840 22 23 00.92 -00 01 39.3 24.1y 15OX190 T09 C~90Hi 2014 09 22.24493 22 22 44.39 -00 03 30.8 25.0r 15OX190 T09 C~90Hi 2014 09 22.24705 22 22 44.39 -00 03 31.0 25.3r 15OX190 T09 C~90Hi 2014 09 22.25989 22 22 44.33 -00 03 31.3 25.2r 15OX190 T09 C~90Hi 2014 09 22.27924 22 22 44.24 -00 03 31.8 25.2r 15OX190 T09 C~90Hi 2014 09 22.35060 22 22 43.94 -00 03 33.8 24.5i 15OX190 T09 C~90Hi 2015 07 15.44102 22 32 21.91 +01 00 03.8 25.6r 15OX190 T09 C~8ibn 2015 07 15.46726 22 32 21.82 +01 00 03.8 25.4r 15OX190 T09 C~8ibn 2015 07 15.48467 22 32 21.77 +01 00 03.8 25.1r 15OX190 T09 C~8ibn 2015 07 21.45179 22 32 01.81 +00 59 19.3 25.3i 15OX190 T09 C~8ibn 2015 07 21.48446 22 32 01.68 +00 59 18.6 24.9i 15OX190 T09 C~8ibn 2015 07 21.51429 22 32 01.58 +00 59 18.4 24.5i 15OX190 T09 C~8ibn 2015 07 21.54156 22 32 01.47 +00 59 18.4 25.0i 15OX190 T09 C~8ibn 2015 07 21.60639 22 32 01.24 +00 59 17.6 24.8i 15OX190 T09 C~8ibn 2015 07 22.41440 22 31 58.38 +00 59 10.0 24.4z 15OX190 T09 C~8ibn 2015 07 22.43553 22 31 58.30 +00 59 09.9 24.5z 15OX190 T09 C~8ibn 2015 07 22.43822 22 31 58.31 +00 59 10.2 24.3z 15OX190 T09 C~8ibn 2015 07 22.45439 22 31 58.23 +00 59 09.9 24.3z 15OX190 T09 C~8ibn 2015 07 22.47331 22 31 58.17 +00 59 09.5 24.5z 15OX190 T09 C~8ibn 2015 07 22.53350 22 31 57.94 +00 59 09.4 24.3z 15OX190 T09 C~8ibn
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 0.11 0.00 0.03
2 0.0000 -1.16 -0.11 -0.08 -0.01
3 0.0000 -1.16 0.04 -0.08 -0.01
4 0.0001 -2.11 0.03 -0.03 0.07
5 0.0003 -7.45 0.05 -0.49 -0.22
6 0.0004 -10.40 -0.13 -0.19 0.17
7 0.0110 -281.98 -0.02 -12.74 0.04
8 0.0110 -282.05 0.06 -12.92 -0.14
9 0.0110 -283.00 0.01 -12.87 -0.05
10 0.0111 -284.44 -0.07 -12.84 0.05
11 0.0113 -289.36 0.03 -13.04 0.07
12 0.8219 9182.18 -0.02 351.68 -0.12
13 0.8220 9180.92 -0.04 352.17 0.05
14 0.8220 9180.22 0.09 352.45 0.11
15 0.8384 8884.88 0.15 421.06 0.07
16 0.8385 8882.81 -0.16 421.13 -0.24
17 0.8385 8881.34 -0.03 421.49 -0.22
18 0.8386 8879.80 -0.09 422.10 0.08
19 0.8388 8876.29 -0.10 422.62 -0.14
20 0.8410 8833.53 -0.08 431.32 -0.15
21 0.8411 8832.37 -0.08 431.66 -0.03
22 0.8411 8832.62 0.31 431.89 0.16
23 0.8411 8831.39 -0.03 432.05 0.14
24 0.8412 8830.41 0.02 432.01 -0.11
25 0.8413 8827.16 0.07 433.18 0.38
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.
15OX190 quality flag:2 Type: 4:3E CENTAURR 4:3E axisobj 36.676 38.028 36.526 ecceobj 0.112 0.236 0.112 incobj 12.145 12.121 12.153 qmin 31.916 26.458 30.953 qmax 41.507 47.412 42.224 amean 36.478 35.775 36.478 amin 36.038 34.999 36.188 amax 36.911 38.187 36.793 emean 0.097 0.230 0.115 emin 0.062 0.195 0.085 emax 0.126 0.257 0.150 imean 16.807 13.087 13.832 imin 13.679 11.816 12.246 imax 18.753 14.739 15.209 excite_mean 0.305 0.323 0.266 fracstop 1.000 0.070 1.000 cjmean 2.918 2.912 2.948 libcent 0 182.9 -180.0 180.1 libamp 0 129.7 -180.0 31.1 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 180.4 182.0 180.3 kozaiamp 180.0 21.6 180.0