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: 13JE65
# Created Sun Dec 22 02:09:28 2024
# Orbit generated from Bernstein formalism
# Fitting 27 observations of 27
# Arc: 3.07y
# First observation: 2013/04/09
# Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
-0.000185 0.038006 -0.000002 -0.003147 0.031891 0.000000
# Chi-squared of fit: 11.11 DOF: 48 RMS: 0.11
# Min/Max residuals: -0.28 0.30
# Exact a, adot, b, bdot, g, gdot:
1.873375E-05 3.844652E-02 -1.222966E-06 -3.196462E-03 3.237782E-02 8.760137E-03
# Covariance matrix:
1.9515E-13 -6.8039E-14 -1.6656E-15 2.9040E-16 1.2925E-13 7.1032E-14
-6.8039E-14 4.1017E-13 5.0539E-15 -2.8170E-14 2.1694E-13 4.2147E-12
-1.6656E-15 5.0539E-15 1.1724E-13 -7.7772E-14 6.2197E-16 6.9021E-14
2.9040E-16 -2.8170E-14 -7.7772E-14 9.8462E-14 -1.7677E-14 -3.7858E-13
1.2925E-13 2.1694E-13 6.2197E-16 -1.7677E-14 3.4388E-13 2.8257E-12
7.1032E-14 4.2147E-12 6.9021E-14 -3.7858E-13 2.8257E-12 5.6563E-11
# lat0 lon0 xBary yBary zBary JD0
6.805659 -120.380139 0.642638 0.091312 -0.764966 2456392.051928
# Heliocentric elements and errors
Epoch: 2456390.5000 = 2013/04/08
Mean Anomaly: 34.38717 +/- 0.010
Argument of Peri: 65.72038 +/- 0.025
Long of Asc Node: 113.78870 +/- 0.003
Inclination: 8.05481 +/- 0.000
Eccentricity: 0.27785536 +/- 0.0002
Semi-Major Axis: 39.25806949 +/- 0.0051
Time of Perihelion: 2447808.5535 +/- 1.9
Perihelion: 28.35000463 +/- 0.0083
Aphelion: 50.16613435 +/- 0.0099
Period (y) 245.9810 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -16.45257432 +/- 0.0003
Ecliptic Y -26.79406884 +/- 0.0005
Ecliptic Z 3.65997529 +/- 0.0001
Ecliptic XDOT 0.00241013 +/- 0.0000
Ecliptic YDOT -0.00230597 +/- 0.0000
Ecliptic ZDOT -0.00018046 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 31.65445855 +/- 0.0004
Geocenter to KBO 30.88534043 +/- 0.0006
# Hcoef: 9.23
The following table shows the complete astrometric record for 13JE65. 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 (13JE65) followed by the observatory code and reference code for the source of the astrometry.
2013 04 09.55115 15 55 40.405 -13 24 56.96 24.3r 13JE65 568 C~1XRf 2013 04 10.56094 15 55 36.052 -13 24 36.06 24.4r 13JE65 568 C~1XRf 2013 04 19.57379 15 54 53.488 -13 21 28.64 24.2r 13JE65 568 C~1XRf 2013 05 07.45193 15 53 13.602 -13 15 16.90 24.2r 13JE65 568 C~1XRf 2013 05 07.49610 15 53 13.327 -13 15 16.07 24.4r 13JE65 568 C~1XRf 2013 05 07.53630 15 53 13.083 -13 15 15.21 24.0r 13JE65 568 C~1XRf 2013 05 09.49657 15 53 01.276 -13 14 36.09 23.9r 13JE65 568 C~1XRf 2013 05 10.50367 15 52 55.157 -13 14 15.86 24.8r 13JE65 568 C~1XRf 2013 06 04.38499 15 50 22.342 -13 07 10.16 13JE65 568 C~1XRf 2013 06 06.38838 15 50 10.455 -13 06 43.45 13JE65 568 C~1XRf 2013 07 02.32839 15 47 56.236 -13 03 09.97 24.6r 13JE65 568 C~1XRf 2013 07 03.36611 15 47 51.884 -13 03 07.16 24.1r 13JE65 568 C~1XRf 2014 03 06.58616 16 05 34.257 -14 11 04.29 24.3r 13JE65 568 C~1XRf 2014 05 04.40376 16 02 15.459 -13 54 08.90 24.0r 13JE65 568 C~1XRf 2014 05 04.45442 16 02 15.165 -13 54 07.66 24.2r 13JE65 568 C~1XRf 2014 05 04.50508 16 02 14.849 -13 54 06.72 24.5r 13JE65 568 C~1XRf 2014 05 25.49675 16 00 07.406 -13 47 52.32 24.3r 13JE65 568 C~1XRf 2014 06 02.47294 15 59 18.343 -13 45 53.37 24.5r 13JE65 568 C~1XRf 2014 06 21.43206 15 57 29.867 -13 42 27.18 24.6r 13JE65 568 C~1XRf 2014 06 22.40477 15 57 24.790 -13 42 20.03 23.8r 13JE65 568 C~1XRf 2014 06 30.42685 15 56 45.503 -13 41 34.79 24.7r 13JE65 568 C~1XRf 2014 07 01.38714 15 56 41.142 -13 41 30.85 24.4r 13JE65 568 C~1XRf 2014 07 18.36111 15 55 37.515 -13 41 29.07 23.5r 13JE65 568 C~1XRf 2014 07 26.28881 15 55 17.802 -13 42 10.89 24.5r 13JE65 568 C~1XRf 2015 03 22.57427 16 13 45.475 -14 42 29.74 24.3r 13JE65 568 C~1XRf 2015 04 18.56543 16 12 15.795 -14 35 01.26 24.2r 13JE65 568 C~1XRf 2016 05 06.60444 16 19 08.425 -15 03 38.35 22.6r 13JE65 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 0.01 0.00 -0.07
2 0.0028 -66.46 -0.10 7.31 0.17
3 0.0274 -712.94 0.07 61.94 0.05
4 0.0764 -2216.55 0.04 121.66 0.06
5 0.0765 -2220.65 -0.02 121.63 -0.02
6 0.0766 -2224.31 -0.01 121.72 0.03
7 0.0820 -2401.10 0.08 123.89 -0.03
8 0.0847 -2492.71 -0.06 124.96 0.24
9 0.1529 -4764.88 0.01 70.70 0.23
10 0.1583 -4940.34 0.07 59.97 -0.02
11 0.2294 -6903.42 -0.09 -149.82 -0.15
12 0.2322 -6966.20 -0.01 -160.71 -0.09
13 0.9063 9036.87 -0.08 -965.16 -0.02
14 1.0674 5995.92 0.08 -543.56 -0.15
15 1.0675 5991.48 0.09 -543.20 0.13
16 1.0676 5986.78 -0.15 -543.20 0.05
17 1.1251 4092.19 0.24 -549.96 0.05
18 1.1469 3367.92 0.06 -578.39 -0.15
19 1.1989 1778.24 0.03 -699.08 -0.08
20 1.2015 1704.35 -0.10 -707.25 -0.16
21 1.2235 1134.70 0.02 -780.57 -0.28
22 1.2261 1071.69 0.11 -789.80 -0.01
23 1.2726 163.98 -0.17 -979.38 0.06
24 1.2943 -108.43 -0.05 -1079.77 -0.06
25 1.9494 16430.62 -0.12 -1444.90 -0.14
26 2.0233 15059.83 -0.03 -1249.33 0.03
27 3.0748 21307.19 0.07 -1828.58 0.30
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.
13JE65 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.091 39.107 39.075 ecceobj 0.274 0.275 0.274 incobj 8.050 8.050 8.050 qmin 27.816 27.794 27.832 qmax 51.521 51.616 51.402 amean 39.454 39.455 39.454 amin 39.073 39.107 39.075 amax 39.891 39.902 39.911 emean 0.257 0.259 0.255 emin 0.194 0.195 0.193 emax 0.294 0.295 0.293 imean 9.074 8.868 9.428 imin 6.127 6.126 6.131 imax 13.001 12.998 13.078 excite_mean 0.304 0.304 0.306 fracstop 1.000 1.000 1.000 cjmean 2.946 2.946 2.945 libcent 0 180.8 180.9 180.0 libamp 0 39.2 33.9 45.8 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 106.4 99.9 112.1 kozaiamp 72.4 75.3 67.8