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: 13NG83
# Created Sun Oct 19 01:09:46 2025
# Orbit generated from Bernstein formalism
# Fitting 12 observations of 12
# Arc: 1.04d
# First observation: 2013/07/13
# Last observation: 2013/07/14
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit: 1.32 DOF: 20 RMS: 0.06
# Min/Max residuals: -0.11 0.11
# Exact a, adot, b, bdot, g, gdot:
1.705512E-05 3.380652E-02 -2.414610E-07 -4.260710E-04 3.070124E-02 0.000000E+00
# Covariance matrix:
4.4977E-11 8.6431E-08 -4.5784E-13 -8.5290E-10 1.4062E-08 0.0000E+00
8.6431E-08 1.6751E-04 -8.8588E-10 -1.6503E-06 2.7208E-05 0.0000E+00
-4.5784E-13 -8.8588E-10 2.5952E-13 -9.2127E-11 -1.4396E-10 0.0000E+00
-8.5290E-10 -1.6503E-06 -9.2127E-11 9.3082E-08 -2.6817E-07 0.0000E+00
1.4062E-08 2.7208E-05 -1.4396E-10 -2.6817E-07 4.4214E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 3.8079E-04
# lat0 lon0 xBary yBary zBary JD0
6.396425 -63.448837 0.102219 0.112987 -1.007450 2456486.767188
# Heliocentric elements and errors
Epoch: 2456480.5000 = 2013/07/07
Mean Anomaly: 352.55375 +/- 81.590
Argument of Peri: 104.23063 +/- 149.555
Long of Asc Node: 199.95045 +/- 4.452
Inclination: 6.24307 +/- 0.057
Eccentricity: 0.02770870 +/- 0.5791
Semi-Major Axis: 34.52576737 +/- 18.2624
Time of Perihelion: 2458013.1697 +/- 239088.3
Perihelion: 33.56910332 +/- 26.7401
Aphelion: 35.48243143 +/- 27.4225
Period (y) 202.8725 +/- 160.96
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 14.83121747 +/- 0.9908
Ecliptic Y -29.90518388 +/- 1.9832
Ecliptic Z 3.62875801 +/- 0.2485
Ecliptic XDOT 0.00269246 +/- 0.0011
Ecliptic YDOT 0.00134316 +/- 0.0016
Ecliptic ZDOT -0.00003762 +/- 0.0002
# Distances at JD0 (AU)
Heliocenter to KBO 33.57756571 +/- 1.8199
Geocenter to KBO 32.57197928 +/- 2.2308
# Hcoef: 7.76
The following table shows the complete astrometric record for 13NG83. 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 (13NG83) followed by the observatory code and reference code for the source of the astrometry.
2013 07 13.26641 19 49 16.71 -14 33 36.68 13NG83 W84 C~91Th 2013 07 13.27719 19 49 16.64 -14 33 36.84 13NG83 W84 C~91Th 2013 07 13.28794 19 49 16.57 -14 33 37.02 13NG83 W84 C~91Th 2013 07 13.29871 19 49 16.51 -14 33 37.22 13NG83 W84 C~91Th 2013 07 14.23153 19 49 10.97 -14 33 51.57 22.7i 13NG83 W84 C~91Th 2013 07 14.23881 19 49 10.93 -14 33 51.64 13NG83 W84 C~91Th 2013 07 14.24610 19 49 10.88 -14 33 51.73 13NG83 W84 C~91Th 2013 07 14.25351 19 49 10.83 -14 33 51.80 13NG83 W84 C~91Th 2013 07 14.26079 19 49 10.79 -14 33 51.84 13NG83 W84 C~91Th 2013 07 14.26807 19 49 10.74 -14 33 51.93 13NG83 W84 C~91Th 2013 07 14.27535 19 49 10.70 -14 33 52.04 13NG83 W84 C~91Th 2013 07 14.30447 19 49 10.53 -14 33 52.63 13NG83 W84 C~91Th
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 0.07 0.00 0.00
2 0.0000 -1.03 0.00 0.03 0.02
3 0.0001 -2.06 -0.07 0.04 0.02
4 0.0001 -2.95 -0.01 0.00 -0.04
5 0.0026 -84.65 0.02 0.67 -0.11
6 0.0027 -85.23 0.08 0.71 -0.08
7 0.0027 -85.97 0.00 0.75 -0.04
8 0.0027 -86.69 -0.06 0.81 0.01
9 0.0027 -87.27 0.01 0.88 0.07
10 0.0027 -88.00 -0.07 0.93 0.11
11 0.0028 -88.59 -0.02 0.93 0.10
12 0.0028 -91.13 0.04 0.80 -0.06
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.
13NG83 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