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: 16RQ105
# Created Wed Mar 26 01:10:55 2025
# Orbit generated from Bernstein formalism
# Fitting 40 observations of 41
# Arc: 1.15y
# First observation: 2015/07/15
# Last observation: 2016/09/07
Preliminary a, adot, b, bdot, g, gdot:
-0.000004 0.018431 -0.000003 0.006934 0.021695 0.000000
# Chi-squared of fit: 25.59 DOF: 74 RMS: 0.14
# Min/Max residuals: -0.36 0.33
# Exact a, adot, b, bdot, g, gdot:
1.384240E-05 1.836225E-02 4.299029E-06 6.884943E-03 2.173528E-02 -2.962766E-03
# Covariance matrix:
1.3252E-13 1.5377E-12 -1.6321E-14 6.6748E-13 1.8577E-12 9.0157E-11
1.5377E-12 4.0547E-11 -4.1029E-13 1.6863E-11 4.6195E-11 2.2772E-09
-1.6321E-14 -4.1029E-13 7.2243E-14 -2.3768E-13 -4.7005E-13 -2.3112E-11
6.6748E-13 1.6863E-11 -2.3768E-13 7.1823E-12 1.9215E-11 9.5095E-10
1.8577E-12 4.6195E-11 -4.7005E-13 1.9215E-11 5.3560E-11 2.5955E-09
9.0157E-11 2.2772E-09 -2.3112E-11 9.5095E-10 2.5955E-09 1.2841E-07
# lat0 lon0 xBary yBary zBary JD0
2.651863 -7.691757 0.877310 0.023956 -0.514988 2457219.075069
# Heliocentric elements and errors
Epoch: 2457210.5000 = 2015/07/07
Mean Anomaly: 271.72086 +/- 2.446
Argument of Peri: 114.79966 +/- 1.661
Long of Asc Node: 344.32825 +/- 0.002
Inclination: 20.87458 +/- 0.006
Eccentricity: 0.16944700 +/- 0.0168
Semi-Major Axis: 45.47314497 +/- 0.2649
Time of Perihelion: 2484675.9357 +/- 722.3
Perihelion: 37.76785688 +/- 0.7940
Aphelion: 53.17843305 +/- 0.8234
Period (y) 306.6484 +/- 2.68
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 45.93545789 +/- 0.0153
Ecliptic Y -7.08937908 +/- 0.0021
Ecliptic Z 2.12891711 +/- 0.0007
Ecliptic XDOT -0.00010191 +/- 0.0000
Ecliptic YDOT 0.00234114 +/- 0.0000
Ecliptic ZDOT 0.00084912 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.52803322 +/- 0.0151
Geocenter to KBO 46.00814778 +/- 0.0155
# Hcoef: 8.12
The following table shows the complete astrometric record for 16RQ105. 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 (16RQ105) followed by the observatory code and reference code for the source of the astrometry.
2015 07 15.57428 23 27 33.52 -00 36 54.0 24.9r 16RQ105 T09 C~8iem 2015 07 15.58464 23 27 33.51 -00 36 54.1 25.2r 16RQ105 T09 C~8iem 2015 07 15.59502 23 27 33.50 -00 36 54.3 25.6r 16RQ105 T09 C~8iem 2015 07 15.59767 23 27 33.49 -00 36 54.0 25.5r 16RQ105 T09 C~8iem 2015 07 15.60551 23 27 33.45 -00 36 54.3 25.3r 16RQ105 T09 C~8iem 2015 07 15.60812 23 27 33.47 -00 36 54.5 25.7r 16RQ105 T09 C~8iem 2015 07 20.57746 23 27 23.16 -00 37 23.5 24.8i 16RQ105 T09 C~8iem 2015 07 20.60650 23 27 23.11 -00 37 23.8 24.8i 16RQ105 T09 C~8iem 2015 07 20.61012 23 27 23.08 -00 37 23.8 24.5i 16RQ105 T09 C~8iem 2015 07 20.62104 23 27 23.06 -00 37 23.8 24.9i 16RQ105 T09 C~8iem 2015 07 22.55368 23 27 18.63 -00 37 37.9 25.2z 16RQ105 T09 C~8iem 2015 07 22.56458 23 27 18.60 -00 37 38.3 24.7z 16RQ105 T09 C~8iem 2015 07 22.56825 23 27 18.59 -00 37 38.3 24.4z 16RQ105 T09 C~8iem 2015 07 22.57918 23 27 18.56 -00 37 38.4 24.5z 16RQ105 T09 C~8iem 2015 07 22.59369 23 27 18.54 -00 37 38.6 24.9z 16RQ105 T09 C~8iem 2015 07 22.59732 23 27 18.52 -00 37 38.4 24.3z 16RQ105 T09 C~8iem 2015 07 22.60820 23 27 18.48 -00 37 38.6 24.5z 16RQ105 T09 C~8iem 2015 07 23.56564 23 27 16.20 -00 37 46.5 24.2y 16RQ105 T09 C~8iem 2015 07 23.58016 23 27 16.14 -00 37 46.7 24.5y 16RQ105 T09 C~8iem 2015 07 23.59843 23 27 16.11 -00 37 46.8 23.8y 16RQ105 T09 C~8iem 2015 07 23.60931 23 27 16.07 -00 37 46.7 24.1y 16RQ105 T09 C~8iem 2015 07 23.61304 23 27 16.08 -00 37 46.7 24.0y 16RQ105 T09 C~8iem 2016 07 03.56814 23 31 04.45 +00 10 00.6 25.2r 16RQ105 T09 C~89UB 2016 07 03.58897 23 31 04.41 +00 10 00.6 25.3r 16RQ105 T09 C~89UB 2016 07 03.59938 23 31 04.41 +00 10 00.7 25.1r 16RQ105 T09 C~89UB 2016 07 12.53265 23 30 52.24 +00 09 55.8 24.5z 16RQ105 T09 C~89UB 2016 07 12.54696 23 30 52.23 +00 09 56.0 24.3z 16RQ105 T09 C~89UB 2016 07 12.56124 23 30 52.20 +00 09 56.0 24.8z 16RQ105 T09 C~89UB 2016 07 12.57556 23 30 52.16 +00 09 55.8 24.4z 16RQ105 T09 C~89UB 2016 07 12.58992 23 30 52.14 +00 09 55.8 24.2z 16RQ105 T09 C~89UB 2016 07 29.54034 23 30 13.99 +00 08 02.8 23.9z 16RQ105 T09 C~89UB 2016 07 29.55485 23 30 13.94 +00 08 02.8 24.2z 16RQ105 T09 C~89UB 2016 07 29.56930 23 30 13.91 +00 08 02.5 24.6z 16RQ105 T09 C~89UB 2016 07 29.58367 23 30 13.85 +00 08 02.6 24.5z 16RQ105 T09 C~89UB 2016 08 01.48689 23 30 05.55 +00 07 30.4 23.9z 16RQ105 T09 C~89UB 2016 08 01.51133 23 30 05.44 +00 07 30.2 23.8z 16RQ105 T09 C~89UB 2016 08 01.54112 23 30 05.36 +00 07 29.5 24.5z 16RQ105 T09 C~89UB 2016 08 01.58729 23 30 05.23 +00 07 29.2 24.3z 16RQ105 T09 C~89UB 2016 09 07.40112 23 27 48.35 -00 03 25.6 25.1r 16RQ105 T09 C~89UB 2016 09 07.43617 23 27 48.20 -00 03 26.3 25.1r 16RQ105 T09 C~89UB 2016 09 07.47817 23 27 48.02 -00 03 27.5 25.4r 16RQ105 T09 C~89UB
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 -0.10 0.00 0.15
2 0.0000 -0.18 0.02 -0.03 0.04
3 0.0001 -0.39 0.11 -0.16 -0.16
4 0.0001 -0.41 0.17 0.18 0.15
5 0.0001 -1.08 -0.27 0.14 0.05
6 0.0001 -0.89 -0.00 -0.16 -0.27
7 0.0137 -154.44 -0.10 34.15 0.00
8 0.0138 -155.24 0.10 34.17 -0.19
9 0.0138 -155.66 -0.18 34.34 -0.04
10 0.0138 -155.93 -0.08 34.46 0.00
11 0.0191 -222.56 0.26 47.70 0.22
12 0.0191 -223.13 0.09 47.51 -0.05
13 0.0191 -223.27 0.08 47.57 -0.01
14 0.0192 -223.72 0.03 47.65 -0.01
15 0.0192 -224.07 0.21 47.59 -0.18
16 0.0192 -224.27 0.15 47.89 0.10
17 0.0193 -224.90 -0.08 47.94 0.08
18 0.0219 -259.44 0.05 54.16 -0.10
19 0.0219 -260.35 -0.31 54.33 -0.04
20 0.0220 -260.80 -0.07 54.42 -0.08
21 0.0220 -261.31 -0.17 54.75 0.17
22 0.0220 -261.18 0.11 54.69 0.09
23 0.9692 4017.88 0.06 1339.38 -0.03
24 0.9692 4017.33 -0.19 1339.62 0.04
25 0.9693 4017.36 -0.00 1339.71 0.05
26 0.9937 3847.61 -0.20 1407.19 -0.15
27 0.9938 3847.55 0.10 1407.43 -0.02
28 0.9938 3847.14 0.05 1407.61 0.04
29 0.9938 3846.51 -0.22 1407.66 -0.02
30 0.9939 3846.23 -0.13 1407.78 -0.01
31 1.0403 3275.61 0.15 1529.54 -0.01
32 1.0403 3274.92 0.09 1529.84 0.18
33 1.0404 3274.39 0.19 1529.74 -0.03
34 1.0404 3273.60 0.02 1530.19 0.31
35 1.0484 3146.46 0.33 1549.68 0.14
36 1.0484 3144.86 ( -0.14) 1550.14 ( 0.43)
37 1.0485 3143.48 -0.13 1549.97 0.05
38 1.0486 3141.57 0.10 1550.47 0.21
39 1.1494 996.22 -0.05 1758.11 -0.19
40 1.1495 993.88 -0.02 1758.35 -0.11
41 1.1496 990.92 -0.13 1758.32 -0.36
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.
16RQ105 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.867 46.692 45.284 ecceobj 0.169 0.216 0.122 incobj 20.771 20.788 20.754 qmin 37.300 35.770 38.896 qmax 54.472 57.616 51.565 amean 45.696 46.498 45.103 amin 45.307 46.094 44.727 amax 46.141 46.997 45.527 emean 0.166 0.211 0.120 emin 0.152 0.195 0.109 emax 0.181 0.228 0.134 imean 21.644 21.723 21.581 imin 21.217 21.190 21.187 imax 22.024 22.216 21.896 excite_mean 0.404 0.426 0.387 fracstop 1.000 1.000 1.000 cjmean 2.916 2.903 2.926 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 177.8 178.3 182.2 kozaiamp 179.9 180.0 180.0