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: 16FX185
# Created Mon Apr 28 01:10:48 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 20 observations of 20
# Arc: 5.16y
# First observation: 2012/01/26
# Last observation: 2017/03/26
# Chi-squared of fit: 32.11 DOF: 34 RMS: 0.22
# Min/Max residuals: -0.34 0.76
# Exact a, adot, b, bdot, g, gdot:
1.463594E-05 1.753743E-02 -3.249895E-07 4.977065E-04 1.933381E-02 -8.486595E-03
# Covariance matrix:
4.9035E-13 9.4201E-13 -2.9211E-16 3.5323E-14 1.0409E-12 1.4285E-11
9.4201E-13 1.3074E-09 -3.8971E-13 4.2756E-11 1.3064E-09 1.7574E-08
-2.9211E-16 -3.8971E-13 4.8861E-13 -1.2945E-13 -3.8983E-13 -5.2374E-12
3.5323E-14 4.2756E-11 -1.2945E-13 1.4319E-12 4.2713E-11 5.7478E-10
1.0409E-12 1.3064E-09 -3.8983E-13 4.2713E-11 1.3057E-09 1.7560E-08
1.4285E-11 1.7574E-08 -5.2374E-12 5.7478E-10 1.7560E-08 2.3623E-07
# lat0 lon0 xBary yBary zBary JD0
9.786618 -155.502157 0.965088 0.033747 -0.195603 2455953.157782
# Heliocentric elements and errors
Epoch: 2455952.5000 = 2012/01/26
Mean Anomaly: 332.20218 +/- 1.811
Argument of Peri: 163.42398 +/- 0.746
Long of Asc Node: 123.94803 +/- 0.005
Inclination: 9.91200 +/- 0.000
Eccentricity: 0.53984061 +/- 0.0297
Semi-Major Axis: 77.55207757 +/- 1.5501
Time of Perihelion: 2475214.2967 +/- 7014.8
Perihelion: 35.68631708 +/- 2.4106
Aphelion: 119.41783806 +/- 3.3166
Period (y) 682.9649 +/- 20.48
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -46.95904643 +/- 0.0846
Ecliptic Y -20.33858205 +/- 0.0386
Ecliptic Z 8.79179788 +/- 0.0160
Ecliptic XDOT 0.00211389 +/- 0.0001
Ecliptic YDOT -0.00175942 +/- 0.0000
Ecliptic ZDOT -0.00013473 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 51.92440860 +/- 0.0781
Geocenter to KBO 51.72325030 +/- 0.0944
# Hcoef: 6.27
The following table shows the complete astrometric record for 16FX185. 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 (16FX185) followed by the observatory code and reference code for the source of the astrometry.
2012 01 26.657016 13 45 03.69 -00 22 39.0 16FX185 T14 C~8Djz 2012 01 26.659834 13 45 03.70 -00 22 39.0 16FX185 T14 C~8Djz 2012 01 26.662575 13 45 03.69 -00 22 39.0 16FX185 T14 C~8Djz 2016 03 07.58831 13 59 59.99 -01 34 08.8 23.3g 16FX185 T09 C~89TP 2016 03 07.62208 13 59 59.92 -01 34 08.0 23.9g 16FX185 T09 C~89TP 2016 03 07.63555 13 59 59.88 -01 34 07.6 24.1g 16FX185 T09 C~89TP 2016 03 16.45267 13 59 35.84 -01 30 38.9 22.8z 16FX185 T09 C~89TP 2016 03 16.45608 13 59 35.84 -01 30 38.9 23.0z 16FX185 T09 C~89TP 2016 03 16.48283 13 59 35.76 -01 30 38.0 22.8z 16FX185 T09 C~89TP 2016 03 16.53534 13 59 35.59 -01 30 37.0 23.4z 16FX185 T09 C~89TP 2016 03 16.55995 13 59 35.54 -01 30 36.5 23.4z 16FX185 T09 C~89TP 2016 03 16.58177 13 59 35.46 -01 30 35.8 23.4z 16FX185 T09 C~89TP 2016 04 15.46627 13 57 51.61 -01 18 42.1 22.3y 16FX185 T09 C~89TP 2016 04 15.49615 13 57 51.49 -01 18 41.6 22.8y 16FX185 T09 C~89TP 2016 04 15.52858 13 57 51.37 -01 18 40.7 22.9y 16FX185 T09 C~89TP 2016 04 15.53670 13 57 51.34 -01 18 40.4 23.4y 16FX185 T09 C~89TP 2016 06 08.254890 13 54 49.58 -01 05 54.8 16FX185 T09 C~8COS 2016 06 08.362536 13 54 49.31 -01 05 54.5 16FX185 T09 C~8COS 2017 03 23.345591 14 03 25.46 -01 50 01.3 16FX185 W84 C~8Djz 2017 03 26.337226 14 03 15.64 -01 48 48.4 16FX185 W84 C~8Djz
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 -0.00 0.00 0.16
2 0.0000 0.00 0.15 0.00 0.13
3 0.0000 0.00 -0.00 0.00 0.09
4 4.1121 0.00 -0.16 0.00 -0.22
5 4.1122 0.00 0.08 0.00 -0.20
6 4.1122 0.00 -0.00 0.00 -0.11
7 4.1363 0.00 -0.18 0.00 -0.16
8 4.1363 0.00 -0.03 0.00 -0.24
9 4.1364 0.00 -0.02 0.00 0.02
10 4.1366 0.00 -0.19 0.00 -0.25
11 4.1366 0.00 0.17 0.00 -0.34
12 4.1367 0.00 -0.04 0.00 -0.17
13 4.2185 0.00 -0.10 0.00 -0.02
14 4.2186 0.00 -0.16 0.00 -0.19
15 4.2187 0.00 -0.08 0.00 -0.01
16 4.2187 0.00 -0.06 0.00 0.11
17 4.3658 0.00 0.09 0.00 0.02
18 4.3661 0.00 -0.01 0.00 -0.08
19 5.1545 0.00 0.27 0.00 0.75
20 5.1627 0.00 0.20 0.00 0.76
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.
16FX185 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 77.271 77.270 77.272 ecceobj 0.539 0.539 0.539 incobj 9.913 9.913 9.913 qmin 34.880 34.808 34.841 qmax 125.663 125.292 125.986 amean 77.800 77.407 78.802 amin 75.892 75.642 76.182 amax 80.783 80.438 80.899 emean 0.540 0.538 0.546 emin 0.523 0.524 0.527 emax 0.556 0.558 0.558 imean 8.061 8.087 8.014 imin 7.233 7.276 7.418 imax 8.817 8.896 8.637 excite_mean 0.558 0.556 0.563 fracstop 1.000 1.000 1.000 cjmean 3.066 3.065 3.067 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 184.2 188.3 181.8 kozaiamp 180.0 180.0 180.0