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: 16QP134 # Created Sun Nov 24 02:10:41 2024 # Orbit generated from Bernstein formalism # Fitting 18 observations of 18 # Arc: 4.27y # First observation: 2014/08/18 # Last observation: 2018/11/26 Preliminary a, adot, b, bdot, g, gdot: -0.000446 0.016917 0.000334 -0.007606 0.020213 0.000000 # Chi-squared of fit: 5.31 DOF: 30 RMS: 0.10 # Min/Max residuals: -0.23 0.20 # Exact a, adot, b, bdot, g, gdot: 1.300421E-05 1.619284E-02 -6.229980E-06 -7.245900E-03 1.951400E-02 -1.008041E-02 # Covariance matrix: 1.1637E-12 -8.0642E-13 -2.9826E-13 3.0588E-13 -4.3508E-13 -8.4569E-12 -8.0642E-13 8.7951E-13 3.9701E-13 -4.0691E-13 7.0532E-13 1.1243E-11 -2.9826E-13 3.9701E-13 9.2797E-13 -4.3837E-13 3.1309E-13 5.7632E-12 3.0588E-13 -4.0691E-13 -4.3837E-13 2.9536E-13 -3.2030E-13 -5.9096E-12 -4.3508E-13 7.0532E-13 3.1309E-13 -3.2030E-13 8.7085E-13 8.8321E-12 -8.4569E-12 1.1243E-11 5.7632E-12 -5.9096E-12 8.8321E-12 1.6336E-10 # lat0 lon0 xBary yBary zBary JD0 -2.940547 -1.457723 0.559837 -0.043310 -0.845531 2456887.782258 # Heliocentric elements and errors Epoch: 2456880.5000 = 2014/08/11 Mean Anomaly: 340.21639 +/- 0.052 Argument of Peri: 270.24000 +/- 0.013 Long of Asc Node: 171.55070 +/- 0.000 Inclination: 24.46438 +/- 0.001 Eccentricity: 0.63245238 +/- 0.0008 Semi-Major Axis: 93.28234839 +/- 0.1598 Time of Perihelion: 2474964.7578 +/- 7.9 Perihelion: 34.28570470 +/- 0.0949 Aphelion: 152.27899209 +/- 0.2713 Period (y) 900.9639 +/- 2.32 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 51.99111117 +/- 0.0024 Ecliptic Y -1.88094921 +/- 0.0001 Ecliptic Z -2.62918552 +/- 0.0002 Ecliptic XDOT -0.00141121 +/- 0.0000 Ecliptic YDOT 0.00230413 +/- 0.0000 Ecliptic ZDOT -0.00094260 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 52.09151781 +/- 0.0024 Geocenter to KBO 51.24526233 +/- 0.0025 # Hcoef: 6.31
The following table shows the complete astrometric record for 16QP134. 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 (16QP134) followed by the observatory code and reference code for the source of the astrometry.
2014 08 18.28148 23 59 20.008 -03 16 39.09 23.1z 16QP134 W84 C~52ZY 2016 08 26.20509 00 07 13.102 -03 21 41.83 23.5r 16QP134 W84 C~52ZY 2016 09 09.15907 00 06 26.923 -03 28 10.62 23.5i 16QP134 W84 C~52ZY 2016 09 22.09563 00 05 40.597 -03 34 19.24 22.9r 16QP134 W84 C~52ZY 2016 09 22.09701 00 05 40.599 -03 34 19.30 23.7g 16QP134 W84 C~52ZY 2016 11 26.12104 00 02 36.082 -03 56 26.47 23.0i 16QP134 W84 C~52ZY 2016 11 26.12241 00 02 36.087 -03 56 26.56 23.4r 16QP134 W84 C~52ZY 2017 08 18.31325 00 11 53.552 -03 18 43.95 23.2r 16QP134 W84 C~52ZY 2017 08 18.31463 00 11 53.540 -03 18 44.05 22.8i 16QP134 W84 C~52ZY 2017 09 27.28309 00 09 39.087 -03 37 27.88 23.3r 16QP134 W84 C~52ZY 2017 09 27.28445 00 09 39.072 -03 37 27.95 23.4i 16QP134 W84 C~52ZY 2017 09 27.28584 00 09 39.066 -03 37 28.06 23.8g 16QP134 W84 C~52ZY 2017 10 12.19051 00 08 45.286 -03 44 10.81 23.9g 16QP134 W84 C~52ZY 2017 11 08.09902 00 07 23.349 -03 53 46.38 23.3g 16QP134 W84 C~52ZY 2017 11 09.06567 00 07 20.998 -03 54 02.22 23.5r 16QP134 W84 C~52ZY 2018 10 18.17681 00 12 46.768 -03 47 24.95 23.2z 16QP134 W84 C~52ZY 2018 10 18.17817 00 12 46.760 -03 47 25.09 22.9i 16QP134 W84 C~52ZY 2018 11 26.08382 00 11 07.207 -03 58 27.20 23.8g 16QP134 W84 C~52ZY
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 0.02 0.00 0.07
2 2.0231 6377.15 0.15 -3107.00 -0.08
3 2.0613 5587.16 0.20 -3186.58 -0.06
4 2.0967 4803.46 -0.13 -3246.96 -0.02
5 2.0967 4803.47 -0.04 -3247.03 -0.08
6 2.2747 1740.22 -0.06 -3360.08 0.08
7 2.2747 1740.26 0.01 -3360.20 -0.03
8 3.0008 10304.03 0.08 -4629.94 0.04
9 3.0008 10303.83 -0.06 -4629.96 0.03
10 3.1102 8003.98 0.01 -4851.42 -0.07
11 3.1102 8003.75 -0.14 -4851.39 -0.04
12 3.1102 8003.62 -0.18 -4851.46 -0.10
13 3.1510 7103.22 -0.23 -4897.56 0.04
14 3.2247 5747.33 0.18 -4933.40 0.15
15 3.2273 5708.71 0.02 -4933.81 0.04
16 4.1667 10344.33 0.08 -6529.81 0.03
17 4.1667 10344.16 -0.01 -6529.89 -0.05
18 4.2732 8709.52 0.13 -6537.02 0.03
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.
16QP134 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 94.720 95.182 94.264 ecceobj 0.636 0.638 0.633 incobj 24.346 24.346 24.346 qmin 33.598 33.531 33.621 qmax 156.918 158.329 156.181 amean 92.383 93.792 91.991 amin 90.170 91.876 89.825 amax 95.672 96.696 95.307 emean 0.621 0.623 0.618 emin 0.600 0.609 0.599 emax 0.640 0.642 0.639 imean 24.563 25.212 24.665 imin 23.639 23.648 23.636 imax 26.093 26.013 26.186 excite_mean 0.748 0.754 0.746 fracstop 1.000 1.000 1.000 cjmean 2.822 2.820 2.823 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 163.1 155.0 168.1 kozaiamp 180.0 180.0 180.0