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: 15OA191
# Created Tue Apr 1 01:10:30 2025
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 7.01d
# First observation: 2015/07/15
# Last observation: 2015/07/22
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.026447 0.000000 0.006165 0.023718 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 5.20 DOF: 25 RMS: 0.10
# Min/Max residuals: -0.22 0.27
# Exact a, adot, b, bdot, g, gdot:
1.549333E-05 2.143740E-02 5.023970E-06 7.009070E-03 2.253794E-02 -6.446224E-04
# Covariance matrix:
1.1624E-11 1.6430E-08 -2.0321E-12 -2.8363E-09 3.7729E-09 9.4452E-09
1.6430E-08 2.3823E-05 -2.9434E-09 -4.1083E-06 5.4648E-06 1.3494E-05
-2.0321E-12 -2.9434E-09 6.3359E-13 4.9174E-10 -6.7524E-10 -1.6572E-09
-2.8363E-09 -4.1083E-06 4.9174E-10 7.1000E-07 -9.4245E-07 -2.2477E-06
3.7729E-09 5.4648E-06 -6.7524E-10 -9.4245E-07 1.2537E-06 3.2259E-06
9.4452E-09 1.3494E-05 -1.6572E-09 -2.2477E-06 3.2259E-06 4.4356E-04
# lat0 lon0 xBary yBary zBary JD0
9.854537 -18.977845 0.760017 0.115903 -0.666644 2457219.025609
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 344.50056 +/- 292.976
Argument of Peri: 49.39955 +/- 40.849
Long of Asc Node: 313.05859 +/- 8.057
Inclination: 20.65742 +/- 5.207
Eccentricity: 0.14537888 +/- 0.4032
Semi-Major Axis: 52.26342578 +/- 14.0359
Time of Perihelion: 2463152.1712 +/- 112286.0
Perihelion: 44.66542723 +/- 24.2473
Aphelion: 59.86142432 +/- 26.5047
Period (y) 377.8375 +/- 152.21
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 41.72825072 +/- 2.0537
Ecliptic Y -15.15460005 +/- 0.7064
Ecliptic Z 7.59402009 +/- 0.3773
Ecliptic XDOT 0.00063384 +/- 0.0024
Ecliptic YDOT 0.00252880 +/- 0.0009
Ecliptic ZDOT 0.00082554 +/- 0.0004
# Distances at JD0 (AU)
Heliocenter to KBO 45.03973748 +/- 1.9185
Geocenter to KBO 44.36962856 +/- 2.2043
# Hcoef: 8.35
The following table shows the complete astrometric record for 15OA191. 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 (15OA191) followed by the observatory code and reference code for the source of the astrometry.
2015 07 15.52482 22 35 03.48 +01 41 41.2 24.7r 15OA191 T09 C~8ibn 2015 07 15.53832 22 35 03.45 +01 41 41.2 24.9r 15OA191 T09 C~8ibn 2015 07 15.55122 22 35 03.41 +01 41 41.2 25.1r 15OA191 T09 C~8ibn 2015 07 15.55335 22 35 03.39 +01 41 41.2 24.9r 15OA191 T09 C~8ibn 2015 07 15.56401 22 35 03.38 +01 41 41.2 25.2r 15OA191 T09 C~8ibn 2015 07 21.48446 22 34 45.55 +01 41 19.3 24.4i 15OA191 T09 C~8ibn 2015 07 21.48986 22 34 45.55 +01 41 19.5 25.0i 15OA191 T09 C~8ibn 2015 07 21.51159 22 34 45.46 +01 41 19.3 24.8i 15OA191 T09 C~8ibn 2015 07 21.54967 22 34 45.33 +01 41 19.0 25.0i 15OA191 T09 C~8ibn 2015 07 21.55236 22 34 45.33 +01 41 19.2 24.8i 15OA191 T09 C~8ibn 2015 07 21.57945 22 34 45.25 +01 41 18.8 24.9i 15OA191 T09 C~8ibn 2015 07 21.60909 22 34 45.15 +01 41 18.7 24.8i 15OA191 T09 C~8ibn 2015 07 22.43553 22 34 42.50 +01 41 14.1 24.1z 15OA191 T09 C~8ibn 2015 07 22.52540 22 34 42.22 +01 41 13.8 24.3z 15OA191 T09 C~8ibn 2015 07 22.53350 22 34 42.19 +01 41 13.5 24.4z 15OA191 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 -0.09 0.00 -0.02
2 0.0000 -0.42 0.05 0.17 -0.05
3 0.0001 -0.97 0.02 0.39 -0.01
4 0.0001 -1.25 -0.16 0.51 0.07
5 0.0001 -1.39 0.14 0.56 -0.02
6 0.0163 -257.31 -0.06 80.88 -0.05
7 0.0163 -257.24 0.27 81.07 0.06
8 0.0164 -258.56 -0.03 81.39 0.09
9 0.0165 -260.48 -0.16 81.85 0.03
10 0.0165 -260.40 0.05 82.03 0.18
11 0.0166 -261.67 0.06 82.11 -0.11
12 0.0167 -263.09 0.03 82.58 -0.04
13 0.0189 -301.64 -0.22 93.28 -0.04
14 0.0192 -305.64 0.09 94.58 0.06
15 0.0192 -306.17 -0.05 94.47 -0.16
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.
15OA191 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