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: 13NE83
# Created Mon Sep 8 01:09:32 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: 7.80 DOF: 20 RMS: 0.14
# Min/Max residuals: -0.36 0.18
# Exact a, adot, b, bdot, g, gdot:
1.596266E-05 2.571731E-02 5.326803E-06 8.335691E-03 2.646584E-02 0.000000E+00
# Covariance matrix:
4.2650E-11 6.9918E-08 -2.5113E-13 -5.3819E-10 1.1397E-08 0.0000E+00
6.9918E-08 1.1669E-04 -4.1687E-10 -8.9504E-07 1.8946E-05 0.0000E+00
-2.5113E-13 -4.1687E-10 4.6991E-13 -2.0171E-10 -6.7781E-11 0.0000E+00
-5.3819E-10 -8.9504E-07 -2.0171E-10 1.2823E-07 -1.4546E-07 0.0000E+00
1.1397E-08 1.8946E-05 -6.7781E-11 -1.4546E-07 3.0794E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.4394E-04
# lat0 lon0 xBary yBary zBary JD0
5.046686 -63.872451 0.094721 0.089289 -1.010557 2456486.767188
# Heliocentric elements and errors
Epoch: 2456480.5000 = 2013/07/07
Mean Anomaly: 350.19511 +/- 56.723
Argument of Peri: 25.75402 +/- 122.774
Long of Asc Node: 281.22856 +/- 6.090
Inclination: 18.65165 +/- 7.023
Eccentricity: 0.02165384 +/- 0.5746
Semi-Major Axis: 39.63840750 +/- 20.7064
Time of Perihelion: 2458963.1349 +/- 378971.0
Perihelion: 38.78008370 +/- 30.4823
Aphelion: 40.49673131 +/- 31.0854
Period (y) 249.5643 +/- 195.55
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 16.93703550 +/- 1.0988
Ecliptic Y -34.74180703 +/- 2.2407
Ecliptic Z 3.32403325 +/- 0.2204
Ecliptic XDOT 0.00234890 +/- 0.0011
Ecliptic YDOT 0.00123903 +/- 0.0015
Ecliptic ZDOT 0.00085911 +/- 0.0002
# Distances at JD0 (AU)
Heliocenter to KBO 38.79311181 +/- 2.0633
Geocenter to KBO 37.78456018 +/- 2.5053
# Hcoef: 8.14
The following table shows the complete astrometric record for 13NE83. 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 (13NE83) followed by the observatory code and reference code for the source of the astrometry.
2013 07 13.26641 19 48 35.05 -15 57 51.33 13NE83 W84 C~91Th 2013 07 13.29871 19 48 34.89 -15 57 51.45 13NE83 W84 C~91Th 2013 07 14.23153 19 48 29.89 -15 57 59.60 23.7i 13NE83 W84 C~91Th 2013 07 14.23881 19 48 29.86 -15 57 59.82 13NE83 W84 C~91Th 2013 07 14.24610 19 48 29.79 -15 57 59.82 13NE83 W84 C~91Th 2013 07 14.25351 19 48 29.77 -15 57 59.83 13NE83 W84 C~91Th 2013 07 14.26079 19 48 29.73 -15 57 59.87 13NE83 W84 C~91Th 2013 07 14.26807 19 48 29.69 -15 58 00.06 13NE83 W84 C~91Th 2013 07 14.27535 19 48 29.65 -15 58 00.18 13NE83 W84 C~91Th 2013 07 14.28264 19 48 29.62 -15 58 00.26 13NE83 W84 C~91Th 2013 07 14.28992 19 48 29.56 -15 58 00.69 13NE83 W84 C~91Th 2013 07 14.30447 19 48 29.50 -15 58 00.62 13NE83 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 -0.12 0.00 -0.07
2 0.0001 -2.29 0.13 0.30 0.04
3 0.0026 -74.68 0.05 5.42 0.18
4 0.0027 -75.14 0.16 5.29 -0.00
5 0.0027 -76.13 -0.26 5.47 0.14
6 0.0027 -76.42 0.04 5.51 0.14
7 0.0027 -76.99 0.04 5.58 0.17
8 0.0027 -77.60 0.01 5.50 0.04
9 0.0028 -78.18 -0.01 5.48 -0.01
10 0.0028 -78.62 0.13 5.48 -0.05
11 0.0028 -79.55 -0.23 5.22 -0.36
12 0.0028 -80.39 0.08 5.44 -0.21
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.
13NE83 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