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: 15OE203
# Created Sun Oct 19 01:11:03 2025
# Orbit generated from Bernstein formalism
# Fitting 16 observations of 16
# Arc: 0.84y
# First observation: 2014/09/18
# Last observation: 2015/07/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000004 0.018916 0.000000 0.004113 0.021707 0.000000
# Chi-squared of fit: 2.55 DOF: 26 RMS: 0.07
# Min/Max residuals: -0.14 0.14
# Exact a, adot, b, bdot, g, gdot:
1.385103E-05 1.882781E-02 3.574298E-06 4.118652E-03 2.181632E-02 -2.580814E-03
# Covariance matrix:
5.2943E-13 2.9868E-11 9.3567E-15 4.0326E-12 1.3365E-11 1.2496E-09
2.9868E-11 1.3656E-08 -1.1442E-12 1.4550E-09 2.9830E-09 4.6763E-07
9.3567E-15 -1.1442E-12 2.1354E-13 -3.3837E-13 7.2352E-14 -2.8825E-11
4.0326E-12 1.4550E-09 -3.3837E-13 1.5828E-10 3.4016E-10 5.0544E-08
1.3365E-11 2.9830E-09 7.2352E-14 3.4016E-10 8.3566E-10 1.0807E-07
1.2496E-09 4.6763E-07 -2.8825E-11 5.0544E-08 1.0807E-07 1.6204E-05
# lat0 lon0 xBary yBary zBary JD0
9.448947 -24.002668 -0.327568 0.156493 -0.939738 2456918.735968
# Heliocentric elements and errors
Epoch: 2456910.5000 = 2014/09/10
Mean Anomaly: 251.06387 +/- 44.948
Argument of Peri: 160.80640 +/- 40.811
Long of Asc Node: 299.93622 +/- 0.051
Inclination: 15.33561 +/- 0.017
Eccentricity: 0.14229980 +/- 0.1640
Semi-Major Axis: 44.00862860 +/- 1.8970
Time of Perihelion: 2489178.6900 +/- 13149.7
Perihelion: 37.74620963 +/- 7.3978
Aphelion: 50.27104758 +/- 7.5350
Period (y) 291.9544 +/- 18.88
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 42.30680728 +/- 0.0547
Ecliptic Y -18.47898883 +/- 0.0244
Ecliptic Z 7.52523565 +/- 0.0100
Ecliptic XDOT 0.00058707 +/- 0.0005
Ecliptic YDOT 0.00231843 +/- 0.0002
Ecliptic ZDOT 0.00045680 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 46.77572171 +/- 0.0505
Geocenter to KBO 45.83725060 +/- 0.0607
# Hcoef: 8.41
The following table shows the complete astrometric record for 15OE203. 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 (15OE203) followed by the observatory code and reference code for the source of the astrometry.
2014 09 18.23519 22 17 14.90 -00 30 54.4 26.9g 15OE203 T09 C~90Hj 2014 09 18.26405 22 17 14.79 -00 30 55.0 25.9g 15OE203 T09 C~90Hj 2014 09 18.27477 22 17 14.75 -00 30 55.2 26.3g 15OE203 T09 C~90Hj 2014 09 22.25775 22 16 59.92 -00 32 32.1 25.4r 15OE203 T09 C~90Hj 2014 09 22.34435 22 16 59.60 -00 32 34.3 24.3i 15OE203 T09 C~90Hj 2014 09 22.36148 22 16 59.54 -00 32 34.8 25.1i 15OE203 T09 C~90Hj 2014 09 22.36694 22 16 59.51 -00 32 34.8 24.6i 15OE203 T09 C~90Hj 2015 07 20.42844 22 24 50.39 +00 24 07.2 24.6i 15OE203 T09 C~90Hj 2015 07 20.44763 22 24 50.33 +00 24 07.0 25.1i 15OE203 T09 C~90Hj 2015 07 20.46669 22 24 50.26 +00 24 06.9 24.9i 15OE203 T09 C~90Hk 2015 07 20.50208 22 24 50.14 +00 24 06.5 24.5i 15OE203 T09 C~90Hk 2015 07 20.51051 22 24 50.12 +00 24 06.5 24.7i 15OE203 T09 C~90Hk 2015 07 22.41783 22 24 43.97 +00 23 51.1 24.5z 15OE203 T09 C~90Hk 2015 07 22.44630 22 24 43.88 +00 23 51.1 24.8z 15OE203 T09 C~90Hk 2015 07 22.47600 22 24 43.79 +00 23 50.8 24.2z 15OE203 T09 C~90Hk 2015 07 22.49493 22 24 43.72 +00 23 50.6 24.4z 15OE203 T09 C~90Hk
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 -0.04 0.00 -0.12
2 0.0001 -1.76 0.01 0.04 -0.03
3 0.0001 -2.39 0.05 0.07 0.02
4 0.0110 -244.83 0.01 -9.37 0.11
5 0.0113 -250.10 0.01 -9.68 0.02
6 0.0113 -251.12 0.03 -9.81 -0.08
7 0.0113 -251.54 -0.06 -9.65 0.09
8 0.8356 7568.42 0.07 592.88 -0.00
9 0.8356 7567.51 0.08 593.03 -0.06
10 0.8357 7566.49 -0.02 593.31 0.02
11 0.8358 7564.67 -0.14 593.60 -0.07
12 0.8358 7564.39 -0.02 593.70 -0.05
13 0.8410 7472.73 -0.14 612.89 -0.06
14 0.8411 7471.47 0.02 613.38 0.14
15 0.8412 7470.10 0.13 613.59 0.04
16 0.8412 7469.05 0.02 613.79 0.04
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.
15OE203 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0