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: 13RQ124
# Created Sat Aug 30 01:09:37 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 37 observations of 37
# Arc: 10.96y
# First observation: 2013/09/13
# Last observation: 2024/08/30
# Chi-squared of fit: 16.94 DOF: 68 RMS: 0.12
# Min/Max residuals: -0.26 0.35
# Exact a, adot, b, bdot, g, gdot:
1.379347E-05 1.903612E-02 -4.906366E-06 -6.972639E-03 2.210183E-02 3.373682E-03
# Covariance matrix:
1.2984E-13 -5.8650E-14 -1.8703E-14 1.5802E-14 -8.9628E-15 -2.3432E-13
-5.8650E-14 4.8531E-14 1.7108E-14 -1.4985E-14 -2.1974E-14 2.2345E-13
-1.8703E-14 1.7108E-14 8.5529E-14 -2.0577E-14 -2.7863E-15 8.9871E-14
1.5802E-14 -1.4985E-14 -2.0577E-14 1.0797E-14 5.4587E-15 -7.8240E-14
-8.9628E-15 -2.1974E-14 -2.7863E-15 5.4587E-15 1.7517E-13 -8.8210E-14
-2.3432E-13 2.2345E-13 8.9871E-14 -7.8240E-14 -8.8210E-14 1.1656E-12
# lat0 lon0 xBary yBary zBary JD0
8.206394 -21.199400 -0.199409 0.140972 -0.976865 2456548.676958
# Heliocentric elements and errors
Epoch: 2456548.5000 = 2013/09/13
Mean Anomaly: 77.33200 +/- 0.020
Argument of Peri: 61.11295 +/- 0.023
Long of Asc Node: 179.90250 +/- 0.000
Inclination: 21.62666 +/- 0.000
Eccentricity: 0.16768338 +/- 0.0001
Semi-Major Axis: 46.64084158 +/- 0.0043
Time of Perihelion: 2431556.2843 +/- 7.3
Perihelion: 38.81994751 +/- 0.0043
Aphelion: 54.46173566 +/- 0.0056
Period (y) 318.5354 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 42.74357215 +/- 0.0008
Ecliptic Y -16.36172519 +/- 0.0003
Ecliptic Z 6.45802659 +/- 0.0001
Ecliptic XDOT 0.00134713 +/- 0.0000
Ecliptic YDOT 0.00200317 +/- 0.0000
Ecliptic ZDOT -0.00079510 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.22136810 +/- 0.0007
Geocenter to KBO 45.24504705 +/- 0.0009
# Hcoef: 7.00
The following table shows the complete astrometric record for 13RQ124. 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 (13RQ124) followed by the observatory code and reference code for the source of the astrometry.
2013 09 13.17618 22 29 22.80 -00 39 13.2 22.7i 13RQ124 W84 C~3clA 2013 09 13.17897 22 29 22.791 -00 39 13.38 22.8z 13RQ124 W84 C~4yQs 2013 09 29.15991 22 28 24.366 -00 47 16.97 23.6r 13RQ124 W84 C~4yQs 2013 09 29.17267 22 28 24.318 -00 47 17.37 23.4i 13RQ124 W84 C~4yQs 2013 09 30.07779 22 28 21.31 -00 47 44.5 23.3i 13RQ124 W84 C~3clA 2013 10 10.10787 22 27 50.423 -00 52 38.57 23.7r 13RQ124 W84 C~4yQs 2013 10 11.08030 22 27 47.716 -00 53 06.34 22.7z 13RQ124 W84 C~4yQs 2013 10 12.03656 22 27 45.103 -00 53 33.10 24.3i 13RQ124 W84 C~4yQs 2013 11 23.05373 22 26 54.190 -01 08 39.65 23.7r 13RQ124 W84 C~4yQs 2015 07 15.51342 22 42 12.05 -00 12 22.3 23.8r 13RQ124 T09 C~91Tk 2015 07 15.51627 22 42 12.03 -00 12 22.3 24.1r 13RQ124 T09 C~91Tk 2015 07 15.52981 22 42 12.01 -00 12 22.3 24.3r 13RQ124 T09 C~91Tk 2015 07 15.55549 22 42 11.96 -00 12 22.7 24.3r 13RQ124 T09 C~91Tk 2015 07 15.55977 22 42 11.92 -00 12 22.5 24.6r 13RQ124 T09 C~91Tk 2015 07 21.43464 22 41 56.19 -00 13 39.1 23.6i 13RQ124 T09 C~91Tk 2015 07 21.47369 22 41 56.07 -00 13 39.6 23.3i 13RQ124 T09 C~91Tk 2015 07 21.50349 22 41 55.97 -00 13 39.9 23.3i 13RQ124 T09 C~91Tk 2015 07 21.59293 22 41 55.73 -00 13 41.3 23.7i 13RQ124 T09 C~91Tk 2015 08 20.41470 22 40 12.01 -00 23 51.5 23.1z 13RQ124 T09 C~8eOG 2015 08 20.42425 22 40 11.96 -00 23 51.8 23.2z 13RQ124 T09 C~8eOG 2015 08 20.43235 22 40 11.94 -00 23 52.2 23.1z 13RQ124 T09 C~8eOG 2015 08 20.44045 22 40 11.90 -00 23 52.2 23.2z 13RQ124 T09 C~8eOG 2015 08 20.44853 22 40 11.87 -00 23 52.7 23.1z 13RQ124 T09 C~8eOG 2015 08 20.45661 22 40 11.85 -00 23 52.7 23.0z 13RQ124 T09 C~8eOG 2015 08 20.50193 22 40 11.66 -00 23 53.8 23.2z 13RQ124 T09 C~8eOG 2016 08 15.22607 22 45 02.035 -00 20 06.25 23.0z 13RQ124 W84 C~4yQs 2016 09 26.11015 22 42 18.939 -00 39 56.21 23.6r 13RQ124 W84 C~4yQs 2016 09 26.11153 22 42 18.934 -00 39 56.44 23.7i 13RQ124 W84 C~4yQs 2016 10 05.08663 22 41 48.346 -00 44 22.72 23.8i 13RQ124 W84 C~4yQs 2016 10 05.08801 22 41 48.347 -00 44 22.59 23.6r 13RQ124 W84 C~4yQs 2017 09 27.12890 22 46 47.601 -00 38 21.42 23.9r 13RQ124 W84 C~4yQs 2018 10 01.21618 22 51 03.930 -00 38 15.70 23.0z 13RQ124 W84 C~4yQs 2020 08 12.275430 23 03 07.348 -00 11 10.35 23.6G 13RQ124 G37 C~441U 2020 08 12.334730 23 03 07.127 -00 11 11.47 13RQ124 G37 C~441U 2020 08 12.409080 23 03 06.866 -00 11 13.31 13RQ124 G37 C~441U 2024 08 30.376440 23 19 31.086 -00 10 34.85 24.1G 13RQ124 G37 C~8Dcl 2024 08 30.431620 23 19 30.873 -00 10 36.12 13RQ124 G37 C~8Dcl
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 -0.03 0.00 -0.03
2 0.0000 0.00 0.00 0.00 -0.13
3 0.0438 0.00 0.03 0.00 -0.10
4 0.0438 0.00 -0.03 0.00 -0.12
5 0.0463 0.00 0.17 0.00 -0.12
6 0.0737 0.00 0.14 0.00 -0.14
7 0.0764 0.00 0.10 0.00 -0.25
8 0.0790 0.00 -0.03 0.00 0.01
9 0.1941 0.00 -0.02 0.00 -0.01
10 1.8353 0.00 0.06 0.00 0.02
11 1.8353 0.00 -0.13 0.00 0.05
12 1.8353 0.00 0.10 0.00 0.21
13 1.8354 0.00 0.34 0.00 0.10
14 1.8354 0.00 -0.09 0.00 0.35
15 1.8515 0.00 0.03 0.00 -0.00
16 1.8516 0.00 -0.07 0.00 0.06
17 1.8517 0.00 -0.26 0.00 0.19
18 1.8519 0.00 0.06 0.00 0.07
19 1.9336 0.00 -0.04 0.00 0.16
20 1.9336 0.00 -0.22 0.00 0.10
21 1.9336 0.00 -0.04 0.00 -0.09
22 1.9336 0.00 -0.15 0.00 0.12
23 1.9337 0.00 -0.11 0.00 -0.18
24 1.9337 0.00 0.07 0.00 0.03
25 1.9338 0.00 -0.06 0.00 0.09
26 2.9214 0.00 -0.13 0.00 -0.03
27 3.0361 0.00 0.09 0.00 0.10
28 3.0361 0.00 0.09 0.00 -0.09
29 3.0607 0.00 0.02 0.00 -0.16
30 3.0607 0.00 0.10 0.00 0.01
31 4.0382 0.00 0.14 0.00 -0.03
32 5.0487 0.00 0.02 0.00 0.02
33 6.9133 0.00 0.10 0.00 -0.10
34 6.9135 0.00 -0.05 0.00 0.14
35 6.9137 0.00 0.02 0.00 -0.00
36 10.9629 0.00 -0.03 0.00 -0.21
37 10.9631 0.00 -0.03 0.00 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.
13RQ124 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.844 46.845 46.844 ecceobj 0.167 0.167 0.167 incobj 21.571 21.571 21.571 qmin 38.233 38.222 38.231 qmax 55.795 55.792 55.799 amean 46.811 46.811 46.811 amin 46.416 46.414 46.401 amax 47.268 47.276 47.272 emean 0.166 0.166 0.166 emin 0.153 0.153 0.153 emax 0.181 0.181 0.181 imean 21.412 21.412 21.412 imin 21.016 21.016 21.016 imax 21.816 21.799 21.800 excite_mean 0.401 0.401 0.401 fracstop 1.000 1.000 1.000 cjmean 2.932 2.932 2.932 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 185.9 185.8 185.7 kozaiamp 179.9 180.0 180.0