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: NI10
# Created Wed Jun 4 01:12:16 2025
# Orbit generated from Bernstein formalism
# Fitting 6 observations of 6
# Arc: 50.85d
# First observation: 2004/06/22
# Last observation: 2004/08/12
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.034167 -0.000002 0.003102 0.027792 0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit: 3.82 DOF: 7 RMS: 0.14
# Min/Max residuals: -0.29 0.33
# Exact a, adot, b, bdot, g, gdot:
1.506597E-05 2.524365E-02 1.750342E-07 2.930516E-03 2.637285E-02 9.349079E-03
# Covariance matrix:
3.7741E-12 4.2957E-09 -1.8310E-13 8.8842E-11 7.3907E-10 -2.1230E-08
4.2957E-09 6.1514E-06 -2.5501E-10 1.2354E-07 1.0254E-06 -4.0997E-05
-1.8310E-13 -2.5501E-10 3.9066E-13 -8.0127E-12 -4.2791E-11 1.6065E-09
8.8842E-11 1.2354E-07 -8.0127E-12 2.5585E-09 2.0738E-08 -7.7557E-07
7.3907E-10 1.0254E-06 -4.2791E-11 2.0738E-08 1.7222E-07 -6.4049E-06
-2.1230E-08 -4.0997E-05 1.6065E-09 -7.7557E-07 -6.4049E-06 4.1426E-04
# lat0 lon0 xBary yBary zBary JD0
2.586918 -90.155554 -0.029210 0.045984 -1.016721 2453178.922973
# Heliocentric elements and errors
Epoch: 2453170.5000 = 2004/06/14
Mean Anomaly: 63.50218 +/- 69.348
Argument of Peri: 276.55241 +/- 16.388
Long of Asc Node: 249.21850 +/- 1.670
Inclination: 7.10760 +/- 0.547
Eccentricity: 0.35020772 +/- 0.7233
Semi-Major Axis: 40.54788511 +/- 19.0678
Time of Perihelion: 2436534.9603 +/- 13868.8
Perihelion: 26.34770291 +/- 31.8398
Aphelion: 54.74806731 +/- 39.0267
Period (y) 258.2025 +/- 182.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -0.07982083 +/- 0.0017
Ecliptic Y -38.89516786 +/- 0.5960
Ecliptic Z 1.71145882 +/- 0.0269
Ecliptic XDOT 0.00261563 +/- 0.0002
Ecliptic YDOT -0.00096993 +/- 0.0021
Ecliptic ZDOT 0.00034784 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 38.93288514 +/- 0.5955
Geocenter to KBO 37.91777836 +/- 0.5967
# Hcoef: 8.27
The following table shows the complete astrometric record for NI10. 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 (NI10) followed by the observatory code and reference code for the source of the astrometry.
2004 06 22.42223 17 59 20.091 -20 51 08.22 23.5R NI10 568 2004 06 23.41986 17 59 14.557 -20 51 06.89 23.6R NI10 568 2004 06 23.51516 17 59 14.009 -20 51 06.85 23.6R NI10 568 2004 06 24.57372 17 59 08.149 -20 51 05.39 24.2R NI10 568 2004 08 11.30788 17 55 25.971 -20 50 58.58 23.5R NI10 568 2004 08 12.27241 17 55 23.002 -20 50 59.90 24.4R NI10 568
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 0.01 0.00 0.33
2 0.0027 -77.57 0.04 1.23 0.04
3 0.0030 -85.26 -0.11 1.26 -0.09
4 0.0059 -167.40 0.05 2.61 -0.29
5 0.1366 -3282.09 -0.07 -4.10 0.08
6 0.1392 -3323.71 0.07 -5.72 -0.07
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.
NI10 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