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: NI200
# Created Wed Jun 4 01:12:16 2025
# Orbit generated from Bernstein formalism
# Fitting 10 observations of 10
# Arc: 10.89d
# First observation: 2014/04/25
# Last observation: 2014/05/06
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.023424 0.000000 -0.008782 0.024746 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 0.61 DOF: 15 RMS: 0.04
# Min/Max residuals: -0.07 0.06
# Exact a, adot, b, bdot, g, gdot:
1.449033E-05 2.236052E-02 -5.494570E-06 -8.670473E-03 2.431861E-02 -8.727222E-04
# Covariance matrix:
8.7013E-13 -1.0768E-10 1.4199E-14 1.2937E-12 -1.4349E-11 2.0265E-08
-1.0768E-10 8.4434E-07 -4.8067E-11 -7.1565E-08 3.0014E-07 3.4190E-05
1.4199E-14 -4.8067E-11 6.7544E-13 -3.0385E-11 -1.6514E-11 -7.3866E-10
1.2937E-12 -7.1565E-08 -3.0385E-11 8.4351E-09 -2.5812E-08 -3.5061E-06
-1.4349E-11 3.0014E-07 -1.6514E-11 -2.5812E-08 1.0770E-07 1.3622E-05
2.0265E-08 3.4190E-05 -7.3866E-10 -3.5061E-06 1.3622E-05 4.2093E-03
# lat0 lon0 xBary yBary zBary JD0
2.388176 -78.772075 0.919944 0.017037 -0.406237 2456772.916308
# Heliocentric elements and errors
Epoch: 2456770.5000 = 2014/04/23
Mean Anomaly: 293.13208 +/- 227.932
Argument of Peri: 246.80970 +/- 160.606
Long of Asc Node: 106.02438 +/- 0.525
Inclination: 21.33430 +/- 1.720
Eccentricity: 0.05964512 +/- 2.6023
Semi-Major Axis: 42.39689999 +/- 8.1844
Time of Perihelion: 2475499.5139 +/- 164584.4
Perihelion: 39.86813182 +/- 110.5962
Aphelion: 44.92566816 +/- 110.6685
Period (y) 276.0637 +/- 79.94
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 7.17554542 +/- 0.1080
Ecliptic Y -40.87459514 +/- 0.5438
Ecliptic Z 1.71326873 +/- 0.0231
Ecliptic XDOT 0.00245260 +/- 0.0015
Ecliptic YDOT 0.00054317 +/- 0.0072
Ecliptic ZDOT -0.00097926 +/- 0.0003
# Distances at JD0 (AU)
Heliocenter to KBO 41.53500053 +/- 0.5355
Geocenter to KBO 41.12077814 +/- 0.5549
# Hcoef: 13.19
The following table shows the complete astrometric record for NI200. 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 (NI200) followed by the observatory code and reference code for the source of the astrometry.
2014 04 25.41553 18 47 58.592 -20 35 05.43 27.2R NI200 304 2014 04 29.32658 18 47 52.173 -20 35 19.33 NI200 304 2014 04 29.38491 18 47 52.060 -20 35 19.69 29.8R NI200 304 2014 04 30.31397 18 47 50.325 -20 35 23.19 29.0R NI200 304 2014 04 30.39707 18 47 50.152 -20 35 23.55 29.2R NI200 304 2014 05 01.39914 18 47 48.182 -20 35 27.73 29.9R NI200 304 2014 05 02.31361 18 47 46.299 -20 35 31.43 29.3R NI200 304 2014 05 02.40072 18 47 46.104 -20 35 31.90 29.7R NI200 304 2014 05 05.35596 18 47 39.471 -20 35 45.10 NI200 304 2014 05 06.30168 18 47 37.186 -20 35 49.55 28.9R NI200 304
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 -0.03
2 0.0107 -90.98 -0.00 -6.40 0.06
3 0.0109 -92.59 -0.03 -6.63 -0.07
4 0.0134 -117.16 0.03 -8.11 0.06
5 0.0136 -119.61 -0.06 -8.27 0.05
6 0.0164 -147.52 0.06 -10.15 -0.07
7 0.0189 -174.18 0.03 -11.66 0.06
8 0.0191 -176.94 -0.03 -11.90 -0.03
9 0.0272 -270.85 0.00 -17.39 -0.02
10 0.0298 -303.19 -0.01 -19.18 -0.00
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.
NI200 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