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: 17OR146 # Created Mon May 6 01:18:01 2024 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 1.03d # First observation: 2017/07/23 # Last observation: 2017/07/24 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # Chi-squared of fit: 1.77 DOF: 30 RMS: 0.06 # Min/Max residuals: -0.12 0.12 # Exact a, adot, b, bdot, g, gdot: 1.321986E-05 2.317665E-02 9.872441E-06 1.622229E-02 2.726070E-02 0.000000E+00 # Covariance matrix: 7.4018E-11 1.2680E-07 -6.9566E-14 3.4910E-11 2.1338E-08 0.0000E+00 1.2680E-07 2.1760E-04 -1.1931E-10 5.9780E-08 3.6600E-05 0.0000E+00 -6.9566E-14 -1.1931E-10 8.6754E-14 -5.2501E-12 -2.0078E-11 0.0000E+00 3.4910E-11 5.9780E-08 -5.2501E-12 9.7119E-08 1.0074E-08 0.0000E+00 2.1338E-08 3.6600E-05 -2.0078E-11 1.0074E-08 6.1588E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.6658E-04 # lat0 lon0 xBary yBary zBary JD0 -0.109092 -42.880701 0.284160 -0.001772 -0.972104 2457957.955271 # Heliocentric elements and errors Epoch: 2457950.5000 = 2017/07/16 Mean Anomaly: 352.32878 +/- 120.505 Argument of Peri: 7.87914 +/- 187.279 Long of Asc Node: 316.82995 +/- 0.057 Inclination: 35.00164 +/- 17.143 Eccentricity: 0.02681704 +/- 0.5992 Semi-Major Axis: 38.68539775 +/- 20.4029 Time of Perihelion: 2459823.2552 +/- 293072.4 Perihelion: 37.64796995 +/- 30.5216 Aphelion: 39.72282555 +/- 31.2446 Period (y) 240.6184 +/- 190.36 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.39677653 +/- 2.4469 Ecliptic Y -25.83628573 +/- 2.2726 Ecliptic Z -0.06942206 +/- 0.0063 Ecliptic XDOT 0.00159078 +/- 0.0015 Ecliptic YDOT 0.00169766 +/- 0.0015 Ecliptic ZDOT 0.00162913 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 37.65769302 +/- 2.3664 Geocenter to KBO 36.68284527 +/- 3.3394 # Hcoef: 9.28
The following table shows the complete astrometric record for 17OR146. 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 (17OR146) followed by the observatory code and reference code for the source of the astrometry.
2017 07 23.45447 21 18 24.79 -15 48 30.7 25.3r 17OR146 568 C~7gvM 2017 07 23.46701 21 18 24.71 -15 48 30.8 25.1r 17OR146 568 C~7gvM 2017 07 23.47014 21 18 24.70 -15 48 30.9 24.8r 17OR146 568 C~7gvM 2017 07 23.47955 21 18 24.65 -15 48 30.9 25.4r 17OR146 568 C~7gvM 2017 07 23.49643 21 18 24.56 -15 48 31.3 25.1r 17OR146 568 C~7gvM 2017 07 23.50898 21 18 24.49 -15 48 31.4 24.7r 17OR146 568 C~7gvM 2017 07 23.52152 21 18 24.42 -15 48 31.6 24.5r 17OR146 568 C~7gvM 2017 07 23.52779 21 18 24.38 -15 48 31.8 24.9r 17OR146 568 C~7gvM 2017 07 23.55048 21 18 24.26 -15 48 32.1 24.8r 17OR146 568 C~7gvM 2017 07 23.56304 21 18 24.19 -15 48 32.2 25.5r 17OR146 568 C~7gvM 2017 07 23.56931 21 18 24.16 -15 48 32.3 25.0r 17OR146 568 C~7gvM 2017 07 23.58502 21 18 24.07 -15 48 32.6 24.7r 17OR146 568 C~7gvM 2017 07 23.59757 21 18 24.00 -15 48 32.7 24.7r 17OR146 568 C~7gvM 2017 07 23.60385 21 18 23.97 -15 48 32.9 24.8r 17OR146 568 C~7gvM 2017 07 24.34315 21 18 20.01 -15 48 44.0 24.8r 17OR146 568 C~7gvM 2017 07 24.44073 21 18 19.49 -15 48 45.6 24.7r 17OR146 568 C~7gvM 2017 07 24.48162 21 18 19.25 -15 48 46.1 25.0r 17OR146 568 C~7gvM
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 0.05 0.00 -0.10
2 0.0000 -1.13 -0.09 0.25 0.04
3 0.0000 -1.30 -0.00 0.20 -0.04
4 0.0001 -1.99 0.06 0.42 0.09
5 0.0001 -3.35 0.05 0.43 -0.06
6 0.0001 -4.34 0.05 0.64 0.03
7 0.0002 -5.36 0.03 0.76 0.02
8 0.0002 -5.97 -0.08 0.74 -0.05
9 0.0003 -7.71 -0.02 0.98 -0.03
10 0.0003 -8.71 -0.01 1.19 0.06
11 0.0003 -9.15 0.04 1.23 0.03
12 0.0004 -10.48 -0.04 1.34 -0.01
13 0.0004 -11.47 -0.03 1.55 0.08
14 0.0004 -11.95 -0.01 1.49 -0.04
15 0.0024 -69.78 -0.05 8.22 0.04
16 0.0027 -77.41 0.12 8.97 -0.12
17 0.0028 -80.86 -0.06 9.54 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.
17OR146 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