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: 15NY45
# Created Wed May 21 01:10:33 2025
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 8.09d
# First observation: 2015/07/15
# Last observation: 2015/07/23
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.026312 -0.000000 -0.007356 0.024894 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 9.75 DOF: 25 RMS: 0.14
# Min/Max residuals: -0.29 0.24
# Exact a, adot, b, bdot, g, gdot:
1.567053E-05 2.345487E-02 -4.853580E-06 -6.969501E-03 2.421326E-02 2.021374E-03
# Covariance matrix:
3.5185E-12 5.0856E-09 -4.8907E-13 -6.7575E-10 1.1473E-09 7.0200E-09
5.0856E-09 8.4994E-06 -8.1310E-10 -1.1239E-06 1.9077E-06 9.6857E-06
-4.8907E-13 -8.1310E-10 5.2306E-13 8.4399E-11 -1.8259E-10 -1.0784E-09
-6.7575E-10 -1.1239E-06 8.4399E-11 1.5018E-07 -2.5232E-07 -1.3378E-06
1.1473E-09 1.9077E-06 -1.8259E-10 -2.5232E-07 4.2836E-07 2.4549E-06
7.0200E-09 9.6857E-06 -1.0784E-09 -1.3378E-06 2.4549E-06 7.4034E-04
# lat0 lon0 xBary yBary zBary JD0
7.902750 -19.808505 0.751136 0.094480 -0.679965 2457218.938919
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 32.85814 +/- 342.477
Argument of Peri: 113.60985 +/- 100.723
Long of Asc Node: 183.81521 +/- 1.687
Inclination: 18.11664 +/- 1.110
Eccentricity: 0.11018762 +/- 0.8407
Semi-Major Axis: 46.05456635 +/- 13.1012
Time of Perihelion: 2446790.9750 +/- 108510.6
Perihelion: 40.97992331 +/- 40.4363
Aphelion: 51.12920939 +/- 41.3612
Period (y) 312.5484 +/- 133.37
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 38.87510528 +/- 1.0403
Ecliptic Y -14.80164264 +/- 0.3748
Ecliptic Z 5.67824283 +/- 0.1535
Ecliptic XDOT 0.00121140 +/- 0.0029
Ecliptic YDOT 0.00237545 +/- 0.0010
Ecliptic ZDOT -0.00074909 +/- 0.0004
# Distances at JD0 (AU)
Heliocenter to KBO 41.98338811 +/- 0.9725
Geocenter to KBO 41.29969180 +/- 1.1163
# Hcoef: 7.96
The following table shows the complete astrometric record for 15NY45. 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 (15NY45) followed by the observatory code and reference code for the source of the astrometry.
2015 07 15.43813 22 34 56.69 -00 25 20.4 24.6r 15NY45 T09 C~8r6r 2015 07 15.49985 22 34 56.52 -00 25 21.1 24.4r 15NY45 T09 C~8r6r 2015 07 15.54268 22 34 56.40 -00 25 21.9 24.9r 15NY45 T09 C~8r6r 2015 07 21.47095 22 34 38.54 -00 26 42.7 24.5i 15NY45 T09 C~8r6r 2015 07 21.50079 22 34 38.43 -00 26 43.2 24.3i 15NY45 T09 C~8r6r 2015 07 21.59024 22 34 38.12 -00 26 44.5 23.7i 15NY45 T09 C~8r6r 2015 07 22.43280 22 34 35.43 -00 26 57.6 23.8z 15NY45 T09 C~8r6r 2015 07 22.45169 22 34 35.39 -00 26 57.8 23.8z 15NY45 T09 C~8r6r 2015 07 22.47062 22 34 35.32 -00 26 58.0 23.7z 15NY45 T09 C~8r6r 2015 07 22.48953 22 34 35.25 -00 26 58.5 24.0z 15NY45 T09 C~8r6r 2015 07 22.50845 22 34 35.20 -00 26 58.5 23.7z 15NY45 T09 C~8r6r 2015 07 23.44064 22 34 32.14 -00 27 13.6 23.8y 15NY45 T09 C~8r6s 2015 07 23.46338 22 34 32.06 -00 27 14.3 24.1y 15NY45 T09 C~8r6s 2015 07 23.50704 22 34 31.92 -00 27 14.8 23.6y 15NY45 T09 C~8r6s 2015 07 23.53172 22 34 31.85 -00 27 15.3 23.6y 15NY45 T09 C~8r6s
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 0.06
2 0.0002 -2.63 0.07 0.31 0.06
3 0.0003 -4.60 0.03 0.24 -0.23
4 0.0165 -283.26 0.11 25.57 0.01
5 0.0166 -284.98 -0.08 25.72 0.03
6 0.0168 -289.77 -0.29 26.25 0.19
7 0.0192 -332.09 -0.16 29.21 0.06
8 0.0192 -332.73 0.19 29.25 0.02
9 0.0193 -333.77 0.12 29.45 0.15
10 0.0193 -334.93 -0.05 29.38 -0.00
11 0.0194 -335.63 0.24 29.66 0.20
12 0.0219 -383.84 -0.03 32.84 0.05
13 0.0220 -385.22 -0.20 32.64 -0.24
14 0.0221 -387.35 -0.02 32.96 -0.09
15 0.0222 -388.51 0.14 32.89 -0.26
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.
15NY45 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