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: 13WG114 # Created Tue Apr 1 01:09:55 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 35 observations of 35 # Arc: 5.17y # First observation: 2013/09/08 # Last observation: 2018/11/09 # Chi-squared of fit: 8.31 DOF: 64 RMS: 0.09 # Min/Max residuals: -0.20 0.26 # Exact a, adot, b, bdot, g, gdot: 1.544345E-05 2.485120E-02 3.703294E-07 2.389762E-04 2.470672E-02 6.325245E-04 # Covariance matrix: 2.5857E-13 -2.4026E-14 -1.0842E-15 2.6422E-16 1.7710E-13 1.4564E-13 -2.4026E-14 1.6301E-13 -1.5889E-15 1.8039E-15 1.5022E-13 1.3998E-12 -1.0842E-15 -1.5889E-15 1.3336E-13 -3.3470E-14 -2.9088E-15 -1.5216E-14 2.6422E-16 1.8039E-15 -3.3470E-14 1.2304E-14 2.0016E-15 1.6824E-14 1.7710E-13 1.5022E-13 -2.9088E-15 2.0016E-15 3.7538E-13 1.4734E-12 1.4564E-13 1.3998E-12 -1.5216E-14 1.6824E-14 1.4734E-12 1.3028E-11 # lat0 lon0 xBary yBary zBary JD0 -1.400466 1.993067 0.288343 -0.023532 -0.966035 2456543.690868 # Heliocentric elements and errors Epoch: 2456544.5000 = 2013/09/09 Mean Anomaly: 13.78052 +/- 0.119 Argument of Peri: 275.88717 +/- 0.137 Long of Asc Node: 70.02986 +/- 0.009 Inclination: 1.47072 +/- 0.000 Eccentricity: 0.06413914 +/- 0.0001 Semi-Major Axis: 44.18258181 +/- 0.0039 Time of Perihelion: 2452438.3191 +/- 35.5 Perihelion: 41.34874888 +/- 0.0046 Aphelion: 47.01641474 +/- 0.0050 Period (y) 293.6871 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.41371263 +/- 0.0010 Ecliptic Y 1.15577179 +/- 0.0000 Ecliptic Z -0.98920996 +/- 0.0000 Ecliptic XDOT -0.00003128 +/- 0.0000 Ecliptic YDOT 0.00275351 +/- 0.0000 Ecliptic ZDOT 0.00002490 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.44163451 +/- 0.0010 Geocenter to KBO 40.47483417 +/- 0.0010 # Hcoef: 6.52
The following table shows the complete astrometric record for 13WG114. 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 (13WG114) followed by the observatory code and reference code for the source of the astrometry.
2013 09 08.19009 00 09 32.516 -00 29 32.57 23.6g 13WG114 W84 C~4yRf 2013 09 11.30866 00 09 19.100 -00 31 01.06 23.6g 13WG114 W84 C~4yRf 2013 09 24.26905 00 08 21.589 -00 37 15.99 22.1Y 13WG114 W84 C~4yRf 2013 10 13.09753 00 06 58.489 -00 46 05.93 21.9z 13WG114 W84 C~4yRf 2013 11 22.06844 00 04 48.704 -00 59 06.20 24.1g 13WG114 W84 C~4yRf 2013 11 22.06982 00 04 48.705 -00 59 06.21 22.9r 13WG114 W84 C~4yRf 2013 11 22.07119 00 04 48.694 -00 59 06.18 22.6i 13WG114 W84 C~4yRf 2013 11 23.09553 00 04 46.790 -00 59 16.51 22.4i 13WG114 W84 C~4yRf 2014 10 02.25127 00 12 58.964 -00 06 17.10 23.7g 13WG114 W84 C~4yRf 2014 10 02.25263 00 12 58.959 -00 06 17.10 22.5i 13WG114 W84 C~4yRf 2014 10 28.19540 00 11 10.644 -00 17 36.47 22.8r 13WG114 W84 C~4yRf 2014 11 15.101019 00 10 13.85 -00 23 15.4 21.9z 13WG114 W84 C~352E 2014 11 15.10154 00 10 13.853 -00 23 15.43 21.8z 13WG114 W84 C~4yRf 2015 11 02.096007 00 16 04.09 +00 15 11.3 23.1r 13WG114 W84 C~352E 2015 11 02.09653 00 16 04.101 +00 15 11.28 22.8r 13WG114 W84 C~4yRf 2016 11 30.10650 00 19 57.067 +00 42 13.40 22.4i 13WG114 W84 C~4yRf 2016 11 30.10788 00 19 57.071 +00 42 13.40 23.2r 13WG114 W84 C~4yRf 2016 12 04.08842 00 19 51.464 +00 41 45.76 22.9z 13WG114 W84 C~4yRf 2016 12 05.09585 00 19 50.256 +00 41 40.14 22.4z 13WG114 W84 C~4yRf 2017 08 27.36996 00 31 01.90 +01 53 41.5 23.0r 13WG114 T09 C~7bIM 2017 08 27.39162 00 31 01.83 +01 53 40.8 23.0r 13WG114 T09 C~7bIM 2017 08 27.43568 00 31 01.66 +01 53 39.8 23.1r 13WG114 T09 C~7bIM 2017 10 22.18159 00 27 04.164 +01 28 10.15 22.0r 13WG114 W84 C~4yRf 2017 10 22.182431 00 27 04.15 +01 28 10.1 21.5i 13WG114 W84 C~352E 2017 10 22.18295 00 27 04.176 +01 28 09.85 21.1i 13WG114 W84 C~4yRf 2017 10 27.173773 00 26 44.01 +01 26 05.8 22.2z 13WG114 W84 C~352E 2017 10 27.17431 00 26 44.018 +01 26 05.73 22.1z 13WG114 W84 C~4yRf 2017 10 29.146169 00 26 36.35 +01 25 18.9 22.3z 13WG114 W84 C~352E 2017 10 29.14670 00 26 36.353 +01 25 18.76 22.2z 13WG114 W84 C~4yRf 2018 09 09.32306 00 35 23.269 +02 22 37.05 22.5i 13WG114 W84 C~4yRf 2018 09 09.32445 00 35 23.268 +02 22 37.02 22.8r 13WG114 W84 C~4yRf 2018 09 09.32583 00 35 23.263 +02 22 37.01 23.9g 13WG114 W84 C~4yRf 2018 10 18.15348 00 32 32.650 +02 04 26.35 21.8z 13WG114 W84 C~4yRf 2018 10 18.19053 00 32 32.493 +02 04 25.18 22.3i 13WG114 W84 C~4yRf 2018 11 09.14493 00 31 07.077 +01 55 43.14 23.1r 13WG114 W84 C~4yRf
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 0.11 0.00 -0.00
2 0.0085 0.00 0.10 0.00 -0.09
3 0.0440 0.00 -0.03 0.00 -0.04
4 0.0956 0.00 -0.08 0.00 -0.04
5 0.2050 0.00 -0.06 0.00 0.02
6 0.2050 0.00 -0.01 0.00 0.02
7 0.2050 0.00 -0.13 0.00 0.06
8 0.2078 0.00 0.14 0.00 0.03
9 1.0652 0.00 0.02 0.00 0.03
10 1.0652 0.00 0.04 0.00 0.07
11 1.1362 0.00 0.02 0.00 0.01
12 1.1852 0.00 -0.13 0.00 -0.06
13 1.1852 0.00 -0.06 0.00 -0.09
14 2.1490 0.00 0.05 0.00 0.13
15 2.1490 0.00 0.24 0.00 0.13
16 3.2277 0.00 -0.11 0.00 -0.00
17 3.2277 0.00 -0.01 0.00 0.01
18 3.2386 0.00 0.04 0.00 -0.00
19 3.2414 0.00 -0.03 0.00 -0.08
20 3.9676 0.00 -0.11 0.00 0.09
21 3.9677 0.00 0.02 0.00 -0.10
22 3.9678 0.00 -0.13 0.00 -0.04
23 4.1204 0.00 -0.00 0.00 0.07
24 4.1204 0.00 -0.16 0.00 0.04
25 4.1204 0.00 0.26 0.00 -0.20
26 4.1341 0.00 -0.14 0.00 0.00
27 4.1341 0.00 0.01 0.00 -0.05
28 4.1395 0.00 -0.00 0.00 0.12
29 4.1395 0.00 0.07 0.00 -0.01
30 5.0024 0.00 -0.03 0.00 -0.01
31 5.0024 0.00 0.04 0.00 -0.01
32 5.0024 0.00 0.05 0.00 0.02
33 5.1087 0.00 0.02 0.00 0.08
34 5.1088 0.00 0.10 0.00 -0.09
35 5.1689 0.00 0.04 0.00 0.06
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.
13WG114 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.441 44.441 44.441 ecceobj 0.070 0.070 0.070 incobj 1.471 1.471 1.471 qmin 40.474 40.475 40.473 qmax 48.171 48.170 48.179 amean 44.213 44.213 44.213 amin 43.860 43.860 43.860 amax 44.589 44.589 44.590 emean 0.065 0.065 0.065 emin 0.049 0.049 0.049 emax 0.080 0.080 0.080 imean 0.747 0.747 0.747 imin 0.101 0.099 0.101 imax 1.191 1.191 1.191 excite_mean 0.066 0.066 0.066 fracstop 1.000 1.000 1.000 cjmean 3.099 3.099 3.099 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 200.8 200.8 201.0 kozaiamp 180.0 180.0 179.9