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: 16FL185 # Created Wed Nov 27 02:10:37 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 29.09d # First observation: 2016/03/16 # Last observation: 2016/04/14 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.041544 -0.000001 0.010124 0.030333 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 6.59 DOF: 23 RMS: 0.12 # Min/Max residuals: -0.21 0.25 # Exact a, adot, b, bdot, g, gdot: 2.099537E-05 3.876853E-02 4.953323E-06 1.027534E-02 2.973076E-02 -5.351169E-03 # Covariance matrix: 7.9747E-13 1.0727E-09 -7.0607E-14 -8.2741E-11 1.9274E-10 4.7181E-09 1.0727E-09 2.0857E-06 -1.3672E-10 -1.6095E-07 3.7265E-07 8.5979E-06 -7.0607E-14 -1.3672E-10 2.5016E-13 7.3330E-12 -2.4459E-11 -5.8133E-10 -8.2741E-11 -1.6095E-07 7.3330E-12 1.2562E-08 -2.8640E-08 -5.9714E-07 1.9274E-10 3.7265E-07 -2.4459E-11 -2.8640E-08 6.6782E-08 1.6504E-06 4.7181E-09 8.5979E-06 -5.8133E-10 -5.9714E-07 1.6504E-06 1.0073E-04 # lat0 lon0 xBary yBary zBary JD0 12.119912 -149.961309 0.555160 0.172570 -0.802938 2457463.994409 # Heliocentric elements and errors Epoch: 2457460.5000 = 2016/03/13 Mean Anomaly: 356.05939 +/- 6.013 Argument of Peri: 61.02588 +/- 34.241 Long of Asc Node: 171.67416 +/- 1.304 Inclination: 19.01879 +/- 0.526 Eccentricity: 0.63141393 +/- 0.1130 Semi-Major Axis: 90.81410008 +/- 20.8482 Time of Perihelion: 2460920.6089 +/- 5143.6 Perihelion: 33.47281240 +/- 12.8225 Aphelion: 148.15538777 +/- 35.5272 Period (y) 865.4423 +/- 298.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.46080773 +/- 0.2475 Ecliptic Y -16.39501014 +/- 0.1431 Ecliptic Z 7.06217596 +/- 0.0614 Ecliptic XDOT 0.00237617 +/- 0.0008 Ecliptic YDOT -0.00275696 +/- 0.0005 Ecliptic ZDOT 0.00082169 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 34.44720422 +/- 0.2227 Geocenter to KBO 33.63519569 +/- 0.2924 # Hcoef: 8.60
The following table shows the complete astrometric record for 16FL185. 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 (16FL185) followed by the observatory code and reference code for the source of the astrometry.
2016 03 16.49362 14 08 42.83 -00 07 02.8 23.4z 16FL185 T09 C~89TO 2016 03 16.49644 14 08 42.82 -00 07 02.7 23.5z 16FL185 T09 C~89TO 2016 03 16.52139 14 08 42.73 -00 07 01.8 23.6z 16FL185 T09 C~89TO 2016 03 16.54620 14 08 42.63 -00 07 00.8 23.7z 16FL185 T09 C~89TO 2016 03 16.57077 14 08 42.55 -00 07 00.1 23.8z 16FL185 T09 C~89TO 2016 03 16.60339 14 08 42.42 -00 06 58.6 23.6z 16FL185 T09 C~89TO 2016 04 11.46218 14 06 48.41 +00 09 57.0 24.0i 16FL185 T09 C~89TO 2016 04 11.48411 14 06 48.31 +00 09 58.0 23.7i 16FL185 T09 C~89TO 2016 04 11.48680 14 06 48.30 +00 09 57.9 23.6i 16FL185 T09 C~89TO 2016 04 11.55713 14 06 47.94 +00 10 00.7 23.9i 16FL185 T09 C~89TO 2016 04 14.52261 14 06 33.15 +00 11 50.1 24.0y 16FL185 T09 C~89TO 2016 04 14.53412 14 06 33.08 +00 11 50.1 24.1y 16FL185 T09 C~89TO 2016 04 14.56920 14 06 32.91 +00 11 51.4 23.9y 16FL185 T09 C~89TO 2016 04 14.57996 14 06 32.85 +00 11 52.1 23.4y 16FL185 T09 C~89TO
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 -0.08 0.00 0.11
2 0.0000 -0.18 -0.07 0.04 0.10
3 0.0001 -1.75 0.02 0.42 0.03
4 0.0001 -3.51 -0.08 0.84 0.01
5 0.0002 -4.87 0.19 1.09 -0.19
6 0.0003 -7.22 0.01 1.83 -0.04
7 0.0711 -1962.56 -0.08 366.43 -0.13
8 0.0712 -1964.31 0.01 366.85 0.10
9 0.0712 -1964.42 0.13 366.71 -0.07
10 0.0714 -1970.46 0.01 367.47 0.07
11 0.0795 -2216.43 -0.02 393.79 0.25
12 0.0795 -2217.42 -0.04 393.43 -0.21
13 0.0796 -2220.26 0.08 393.78 -0.14
14 0.0796 -2221.35 -0.10 394.12 0.13
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.