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: 15NE44 # Created Tue Apr 1 01:10:30 2025 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 7.07d # First observation: 2015/07/15 # Last observation: 2015/07/22 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.019321 -0.000000 -0.002115 0.022067 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # Chi-squared of fit: 8.72 DOF: 17 RMS: 0.16 # Min/Max residuals: -0.43 0.34 # Exact a, adot, b, bdot, g, gdot: 1.272904E-05 1.784538E-02 -1.490332E-06 -1.879203E-03 2.171327E-02 1.061733E-04 # Covariance matrix: 6.3047E-12 8.5927E-09 -1.0916E-12 -1.3899E-09 1.8850E-09 -4.0874E-09 8.5927E-09 1.2637E-05 -1.6005E-09 -2.0378E-06 2.7638E-06 -5.5024E-06 -1.0916E-12 -1.6005E-09 6.3017E-13 2.3326E-10 -3.5009E-10 7.5279E-10 -1.3899E-09 -2.0378E-06 2.3326E-10 3.3078E-07 -4.4577E-07 8.8297E-07 1.8850E-09 2.7638E-06 -3.5009E-10 -4.4577E-07 6.0456E-07 -1.2853E-06 -4.0874E-09 -5.5024E-06 7.5279E-10 8.8297E-07 -1.2853E-06 -2.4971E-04 # lat0 lon0 xBary yBary zBary JD0 10.153194 -21.592226 0.729335 0.125183 -0.698487 2457218.944659 # Heliocentric elements and errors Epoch: 2457210.5000 = 2015/07/07 Mean Anomaly: 183.13044 +/- 303.079 Argument of Peri: 297.94599 +/- 297.946 Long of Asc Node: 216.86963 +/- 2.746 Inclination: 11.57976 +/- 0.309 Eccentricity: 0.19604458 +/- 0.2269 Semi-Major Axis: 39.09910174 +/- 6.3402 Time of Perihelion: 2501083.6879 +/- 7933520.9 Perihelion: 31.43393469 +/- 10.2320 Aphelion: 46.76426880 +/- 11.6712 Period (y) 244.4885 +/- 59.47 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 42.54052931 +/- 1.5094 Ecliptic Y -17.62171792 +/- 0.5975 Ecliptic Z 8.11855940 +/- 0.2907 Ecliptic XDOT 0.00087686 +/- 0.0009 Ecliptic YDOT 0.00206574 +/- 0.0021 Ecliptic ZDOT -0.00023082 +/- -0.0002 # Distances at JD0 (AU) Heliocenter to KBO 46.75609675 +/- 1.3926 Geocenter to KBO 46.05477737 +/- 1.6492 # Hcoef: 8.27
The following table shows the complete astrometric record for 15NE44. 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 (15NE44) followed by the observatory code and reference code for the source of the astrometry.
2015 07 15.44387 22 25 03.29 +01 00 39.8 25.7r 15NE44 T09 C~8ibh 2015 07 15.46937 22 25 03.21 +01 00 39.4 25.2r 15NE44 T09 C~8ibh 2015 07 15.48681 22 25 03.16 +01 00 39.6 25.2r 15NE44 T09 C~8ibh 2015 07 20.42844 22 24 48.37 +00 59 54.1 25.3i 15NE44 T09 C~8ibh 2015 07 20.50208 22 24 48.13 +00 59 53.4 24.6i 15NE44 T09 C~8ibh 2015 07 20.56035 22 24 47.94 +00 59 52.9 24.4i 15NE44 T09 C~8ibh 2015 07 22.41783 22 24 42.05 +00 59 32.9 24.2z 15NE44 T09 C~8ibh 2015 07 22.45708 22 24 41.90 +00 59 32.2 25.1z 15NE44 T09 C~8ibh 2015 07 22.47600 22 24 41.89 +00 59 32.1 24.8z 15NE44 T09 C~8ibh 2015 07 22.49762 22 24 41.79 +00 59 32.1 24.1z 15NE44 T09 C~8ibh 2015 07 22.51655 22 24 41.74 +00 59 31.6 24.5z 15NE44 T09 C~8ibh
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 0.06 0.00 0.03
2 0.0001 -1.26 -0.09 0.07 -0.13
3 0.0001 -1.89 0.05 0.54 0.18
4 0.0136 -224.80 0.03 40.32 -0.18
5 0.0138 -228.40 -0.02 41.00 -0.10
6 0.0140 -231.23 -0.03 41.59 0.02
7 0.0191 -320.70 -0.04 55.69 0.16
8 0.0192 -323.05 -0.43 55.87 0.04
9 0.0193 -323.23 0.34 55.83 -0.15
10 0.0193 -324.62 0.03 56.39 0.24
11 0.0194 -325.50 0.10 56.20 -0.10
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.
15NE44 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