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: 13JF65
# Created Sun Dec 22 02:09:29 2024
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 30
# Arc: 3.07y
# First observation: 2013/04/09
# Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
-0.000283 0.037709 0.000014 -0.003307 0.031243 0.000000
# Chi-squared of fit: 14.31 DOF: 54 RMS: 0.12
# Min/Max residuals: -0.35 0.26
# Exact a, adot, b, bdot, g, gdot:
1.912548E-05 3.754448E-02 -1.274971E-06 -3.301265E-03 3.153348E-02 1.379535E-03
# Covariance matrix:
1.6161E-13 -1.2702E-13 -2.7234E-15 6.1657E-15 7.7648E-14 -7.3021E-13
-1.2702E-13 3.7318E-13 7.7470E-15 -2.8154E-14 1.1807E-13 3.4458E-12
-2.7234E-15 7.7470E-15 1.0285E-13 -6.2526E-14 6.1107E-16 8.8009E-14
6.1657E-15 -2.8154E-14 -6.2526E-14 7.3554E-14 -1.0789E-14 -3.2094E-13
7.7648E-14 1.1807E-13 6.1107E-16 -1.0789E-14 2.8294E-13 1.3766E-12
-7.3021E-13 3.4458E-12 8.8009E-14 -3.2094E-13 1.3766E-12 3.9287E-11
# lat0 lon0 xBary yBary zBary JD0
6.904082 -120.126315 0.646044 0.092283 -0.761974 2456392.051928
# Heliocentric elements and errors
Epoch: 2456390.5000 = 2013/04/08
Mean Anomaly: 4.81823 +/- 0.043
Argument of Peri: 118.86540 +/- 0.063
Long of Asc Node: 112.61656 +/- 0.002
Inclination: 8.32292 +/- 0.000
Eccentricity: 0.17382836 +/- 0.0001
Semi-Major Axis: 39.26902853 +/- 0.0034
Time of Perihelion: 2455187.5195 +/- 10.9
Perihelion: 32.44295777 +/- 0.0039
Aphelion: 46.09509930 +/- 0.0048
Period (y) 246.0840 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -16.74407683 +/- 0.0003
Ecliptic Y -27.56714683 +/- 0.0005
Ecliptic Z 3.81205860 +/- 0.0001
Ecliptic XDOT 0.00273615 +/- 0.0000
Ecliptic YDOT -0.00176839 +/- 0.0000
Ecliptic ZDOT -0.00027001 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 32.47835408 +/- 0.0004
Geocenter to KBO 31.71232954 +/- 0.0005
# Hcoef: 9.12
The following table shows the complete astrometric record for 13JF65. 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 (13JF65) followed by the observatory code and reference code for the source of the astrometry.
2013 04 09.55115 15 56 46.247 -13 22 17.14 24.1r 13JF65 568 C~1XRf 2013 04 10.52025 15 56 42.207 -13 21 57.93 24.3r 13JF65 568 C~1XRf 2013 04 10.56094 15 56 42.058 -13 21 57.10 24.4r 13JF65 568 C~1XRf 2013 04 19.57379 15 56 00.791 -13 18 55.65 13JF65 568 C~1XRf 2013 05 07.45193 15 54 23.717 -13 12 56.20 24.3r 13JF65 568 C~1XRf 2013 05 07.49610 15 54 23.451 -13 12 55.30 23.9r 13JF65 568 C~1XRf 2013 05 07.53630 15 54 23.217 -13 12 54.59 24.1r 13JF65 568 C~1XRf 2013 05 09.49657 15 54 11.723 -13 12 16.70 24.1r 13JF65 568 C~1XRf 2013 05 10.50367 15 54 05.763 -13 11 57.54 24.6r 13JF65 568 C~1XRf 2013 06 04.38499 15 51 36.679 -13 05 07.43 24.4r 13JF65 568 C~1XRf 2013 06 06.38838 15 51 25.080 -13 04 41.58 24.3r 13JF65 568 C~1XRf 2013 07 03.37823 15 49 09.187 -13 01 15.87 24.3r 13JF65 568 C~1XRf 2014 03 06.58616 16 06 28.536 -14 07 59.11 24.4r 13JF65 568 C~1XRf 2014 03 06.60128 16 06 28.524 -14 07 58.95 24.5r 13JF65 568 C~1XRf 2014 03 07.57593 16 06 28.377 -14 07 47.98 24.6r 13JF65 568 C~1XRf 2014 05 01.40606 16 03 32.204 -13 52 26.92 23.9r 13JF65 568 C~1XRf 2014 05 01.45743 16 03 31.905 -13 52 26.23 13JF65 568 C~1XRf 2014 05 04.40376 16 03 15.434 -13 51 30.73 24.1r 13JF65 568 C~1XRf 2014 05 04.45442 16 03 15.173 -13 51 29.77 24.1r 13JF65 568 C~1XRf 2014 05 04.50508 16 03 14.861 -13 51 28.56 13JF65 568 C~1XRf 2014 05 22.53356 16 01 28.031 -13 46 12.16 23.5r 13JF65 568 C~1XRf 2014 05 22.55345 16 01 27.893 -13 46 12.05 24.2r 13JF65 568 C~1XRf 2014 05 25.49675 16 01 10.014 -13 45 25.74 24.0r 13JF65 568 C~1XRf 2014 06 02.47294 16 00 21.857 -13 43 30.73 24.3r 13JF65 568 C~1XRf 2014 07 01.38714 15 57 47.175 -13 39 19.99 23.8r 13JF65 568 C~1XRf 2014 07 26.28881 15 56 24.662 -13 40 05.00 24.1r 13JF65 568 C~1XRf 2015 03 22.57427 16 14 39.613 -14 39 53.29 13JF65 568 C~1XRf 2015 04 18.56543 16 13 12.216 -14 32 34.97 24.0r 13JF65 568 C~1XRf 2016 05 06.53851 16 20 12.289 -15 02 09.91 24.0r 13JF65 568 C~2LSW 2016 05 06.60444 16 20 11.910 -15 02 08.84 24.2r 13JF65 568 C~2LSW
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 -0.06 0.00 -0.08
2 0.0027 -61.65 -0.14 6.70 -0.06
3 0.0028 -63.94 0.24 7.07 0.04
4 0.0274 -690.69 0.26 60.79 -0.04
5 0.0764 -2151.71 0.05 119.46 0.08
6 0.0765 -2155.70 -0.01 119.54 0.10
7 0.0766 -2159.19 0.08 119.52 0.05
8 0.0820 -2331.27 0.10 121.74 0.10
9 0.0847 -2420.40 -0.01 122.39 -0.01
10 0.1529 -4636.37 -0.35 68.21 -0.05
11 0.1583 -4807.58 -0.04 57.83 -0.01
12 0.2322 -6793.50 -0.03 -161.27 0.14
13 0.9063 8866.68 0.07 -987.44 0.09
14 0.9064 8866.47 -0.06 -987.31 0.06
15 0.9090 8862.23 -0.15 -976.96 0.16
16 1.0592 6163.34 0.10 -578.28 0.04
17 1.0593 6158.93 0.01 -578.47 -0.25
18 1.0674 5912.61 -0.23 -571.69 -0.19
19 1.0675 5908.69 0.20 -571.50 -0.08
20 1.0676 5903.99 -0.13 -571.22 0.12
21 1.1170 4315.06 0.13 -571.73 0.14
22 1.1170 4313.07 -0.04 -572.02 -0.11
23 1.1251 4048.48 0.03 -578.92 -0.08
24 1.1469 3337.78 -0.23 -607.43 -0.19
25 1.2261 1079.20 0.10 -819.30 -0.10
26 1.2943 -88.76 0.11 -1109.76 0.03
27 1.9494 16264.02 -0.11 -1505.78 -0.08
28 2.0233 14928.07 0.08 -1312.13 0.01
29 3.0746 21292.80 0.03 -1937.67 0.09
30 3.0748 21287.15 0.01 -1937.60 0.08
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.
13JF65 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.134 39.145 39.123 ecceobj 0.171 0.171 0.171 incobj 8.317 8.317 8.317 qmin 31.469 31.470 31.477 qmax 47.816 47.801 47.878 amean 39.456 39.456 39.456 amin 39.134 39.144 39.123 amax 39.832 39.817 39.853 emean 0.183 0.183 0.183 emin 0.164 0.164 0.165 emax 0.201 0.201 0.201 imean 6.535 6.534 6.536 imin 5.917 5.916 5.918 imax 7.300 7.300 7.304 excite_mean 0.215 0.215 0.215 fracstop 1.000 1.000 1.000 cjmean 2.999 2.999 2.999 libcent 0 179.3 179.9 179.6 libamp 0 17.0 14.4 21.7 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 175.5 175.6 175.5 kozaiamp 180.0 180.0 180.0