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: 16FK164 # Created Sun Dec 22 02:10:41 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 17 observations of 17 # Arc: 5.19y # First observation: 2014/05/02 # Last observation: 2019/07/12 # Chi-squared of fit: 22.49 DOF: 28 RMS: 0.20 # Min/Max residuals: -0.49 0.48 # Exact a, adot, b, bdot, g, gdot: 1.028747E-05 1.576830E-02 -5.010544E-06 -5.763650E-03 2.031588E-02 -6.390219E-04 # Covariance matrix: 1.0197E-12 -9.1314E-13 -2.7606E-13 2.9435E-13 -4.1994E-14 -1.0821E-11 -9.1314E-13 9.5576E-13 3.0630E-13 -3.2788E-13 7.5901E-14 1.2010E-11 -2.7606E-13 3.0630E-13 3.8777E-13 -2.0733E-13 1.5281E-14 4.0613E-12 2.9435E-13 -3.2788E-13 -2.0733E-13 1.6599E-13 -3.1930E-14 -4.3314E-12 -4.1994E-14 7.5901E-14 1.5281E-14 -3.1930E-14 3.6184E-13 6.4090E-13 -1.0821E-11 1.2010E-11 4.0613E-12 -4.3314E-12 6.4090E-13 1.5920E-10 # lat0 lon0 xBary yBary zBary JD0 -19.908652 -153.339459 -0.258431 -0.331595 -0.915902 2456779.549103 # Heliocentric elements and errors Epoch: 2456780.5000 = 2014/05/03 Mean Anomaly: 195.77334 +/- 0.258 Argument of Peri: 34.03948 +/- 0.259 Long of Asc Node: 344.24664 +/- 0.001 Inclination: 27.59972 +/- 0.001 Eccentricity: 0.13563413 +/- 0.0002 Semi-Major Axis: 44.30726524 +/- 0.0046 Time of Perihelion: 2505922.4065 +/- 77.7 Perihelion: 38.29768792 +/- 0.0114 Aphelion: 50.31684256 +/- 0.0119 Period (y) 294.9311 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.11624944 +/- 0.0012 Ecliptic Y -21.43291377 +/- 0.0006 Ecliptic Z -16.76157329 +/- 0.0005 Ecliptic XDOT 0.00125684 +/- 0.0000 Ecliptic YDOT -0.00174750 +/- 0.0000 Ecliptic ZDOT -0.00070086 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 50.14080887 +/- 0.0011 Geocenter to KBO 49.22263164 +/- 0.0015 # Hcoef: 5.43
The following table shows the complete astrometric record for 16FK164. 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 (16FK164) followed by the observatory code and reference code for the source of the astrometry.
2014 05 02.048325 13 06 40.93 -28 42 03.8 22.4V 16FK164 W84 C~6hUm 2015 06 08.181307 13 07 51.35 -29 04 07.3 22.5r 16FK164 W84 C~6hUm 2015 06 08.183358 13 07 51.33 -29 04 07.3 16FK164 W84 C~6hUm 2015 06 08.998281 13 07 49.64 -29 03 43.9 23.4g 16FK164 W84 C~6hUm 2015 06 08.999766 13 07 49.65 -29 03 43.8 16FK164 W84 C~6hUm 2015 06 09.001237 13 07 49.63 -29 03 43.8 23.3g 16FK164 W84 C~6hUm 2015 06 09.002708 13 07 49.63 -29 03 43.7 16FK164 W84 C~6hUm 2016 03 17.181932 13 16 28.79 -30 14 38.5 22.3r 16FK164 309 C~6hUm 2016 03 17.197689 13 16 28.73 -30 14 38.3 16FK164 309 C~6hUm 2016 03 17.213437 13 16 28.66 -30 14 38.2 22.4r 16FK164 309 C~6hUm 2016 05 06.02816 13 12 47.423 -29 59 45.04 22.0r 16FK164 807 C~6hUm 2016 05 06.12883 13 12 47.005 -29 59 42.46 22.0r 16FK164 807 C~6hUm 2016 05 06.22900 13 12 46.580 -29 59 39.82 22.0r 16FK164 807 C~6hUm 2017 05 03.011544 13 16 17.92 -30 40 48.1 22.2i 16FK164 W84 C~6hUm 2017 05 03.012911 13 16 17.91 -30 40 48.0 16FK164 W84 C~6hUm 2019 07 12.083345 13 20 17.70 -31 26 25.5 22.5z 16FK164 W84 C~6hUm 2019 07 12.086200 13 20 17.70 -31 26 25.4 16FK164 W84 C~6hUm
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 0.48 0.00 -0.07
2 1.1010 0.00 0.07 0.00 0.24
3 1.1010 0.00 -0.16 0.00 0.18
4 1.1032 0.00 -0.18 0.00 0.04
5 1.1032 0.00 0.02 0.00 0.10
6 1.1032 0.00 -0.23 0.00 0.06
7 1.1032 0.00 -0.18 0.00 0.12
8 1.8758 0.00 -0.25 0.00 -0.03
9 1.8758 0.00 -0.15 0.00 0.09
10 1.8759 0.00 -0.20 0.00 0.12
11 2.0123 0.00 0.32 0.00 -0.15
12 2.0125 0.00 0.32 0.00 -0.34
13 2.0128 0.00 0.17 0.00 -0.49
14 3.0033 0.00 -0.15 0.00 -0.05
15 3.0033 0.00 -0.21 0.00 0.01
16 5.1938 0.00 0.11 0.00 0.09
17 5.1938 0.00 0.10 0.00 0.12
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.
16FK164 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.065 44.065 44.065 ecceobj 0.142 0.142 0.142 incobj 27.697 27.697 27.697 qmin 37.331 37.330 37.331 qmax 51.683 51.683 51.684 amean 44.344 44.344 44.343 amin 43.981 43.992 43.996 amax 44.747 44.747 44.747 emean 0.140 0.140 0.140 emin 0.125 0.125 0.126 emax 0.156 0.156 0.156 imean 28.376 28.376 28.377 imin 28.005 28.006 28.005 imax 28.701 28.700 28.702 excite_mean 0.496 0.496 0.496 fracstop 1.000 1.000 1.000 cjmean 2.793 2.793 2.793 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 167.0 166.9 166.9 kozaiamp 180.0 180.0 180.0