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: 13JD65
# Created Sun Dec 22 02:09:28 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 27 observations of 27
# Arc: 6.16y
# First observation: 2013/04/09
# Last observation: 2019/06/06
# Chi-squared of fit: 5.01 DOF: 48 RMS: 0.08
# Min/Max residuals: -0.23 0.16
# Exact a, adot, b, bdot, g, gdot:
1.741386E-05 3.101219E-02 2.937040E-06 5.416065E-03 2.862588E-02 1.555588E-04
# Covariance matrix:
1.6240E-13 -1.2379E-13 1.0608E-14 -2.2211E-14 8.1556E-14 -6.4598E-13
-1.2379E-13 2.3920E-13 -2.2641E-14 4.4125E-14 4.2208E-14 1.2985E-12
1.0608E-14 -2.2641E-14 8.3737E-14 -2.9057E-14 -3.6678E-15 -1.3566E-13
-2.2211E-14 4.4125E-14 -2.9057E-14 3.0964E-14 2.7953E-15 2.6666E-13
8.1556E-14 4.2208E-14 -3.6678E-15 2.7953E-15 2.9378E-13 1.0386E-13
-6.4598E-13 1.2985E-12 -1.3566E-13 2.6666E-13 1.0386E-13 7.8357E-12
# lat0 lon0 xBary yBary zBary JD0
8.495465 -121.771454 0.623795 0.116096 -0.777107 2456392.048058
# Heliocentric elements and errors
Epoch: 2456392.5000 = 2013/04/10
Mean Anomaly: 353.24282 +/- 0.052
Argument of Peri: 48.01990 +/- 0.063
Long of Asc Node: 198.07111 +/- 0.001
Inclination: 13.02535 +/- 0.000
Eccentricity: 0.09097510 +/- 0.0001
Semi-Major Axis: 39.25490314 +/- 0.0035
Time of Perihelion: 2458078.6728 +/- 17.6
Perihelion: 35.68368440 +/- 0.0040
Aphelion: 42.82612189 +/- 0.0045
Period (y) 245.9513 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -19.13459374 +/- 0.0003
Ecliptic Y -29.71027843 +/- 0.0006
Ecliptic Z 5.16089278 +/- 0.0001
Ecliptic XDOT 0.00254788 +/- 0.0000
Ecliptic YDOT -0.00150884 +/- 0.0000
Ecliptic ZDOT 0.00051466 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 35.71370390 +/- 0.0005
Geocenter to KBO 34.93345260 +/- 0.0007
# Hcoef: 8.22
The following table shows the complete astrometric record for 13JD65. 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 (13JD65) followed by the observatory code and reference code for the source of the astrometry.
2013 04 09.54728 15 51 36.396 -11 28 25.94 23.5r 13JD65 568 C~1XRf 2013 04 10.51637 15 51 32.641 -11 28 01.61 24.1r 13JD65 568 C~1XRf 2013 04 10.55690 15 51 32.457 -11 28 00.35 23.9r 13JD65 568 C~1XRf 2013 04 19.56975 15 50 54.146 -11 24 11.19 23.8r 13JD65 568 C~1XRf 2013 05 07.44791 15 49 25.049 -11 16 48.50 23.5r 13JD65 568 C~1XRf 2013 05 07.49211 15 49 24.801 -11 16 47.42 23.3r 13JD65 568 C~1XRf 2013 05 07.53231 15 49 24.586 -11 16 46.46 23.6r 13JD65 568 C~1XRf 2013 05 09.49257 15 49 14.099 -11 16 00.40 23.7r 13JD65 568 C~1XRf 2013 05 10.49969 15 49 08.673 -11 15 36.87 23.4r 13JD65 568 C~1XRf 2013 06 04.38093 15 46 53.610 -11 07 16.95 23.5r 13JD65 568 C~1XRf 2013 06 06.38422 15 46 43.139 -11 06 44.82 24.2r 13JD65 568 C~1XRf 2014 02 24.63659 16 00 06.525 -11 48 23.60 13JD65 568 C~1XRf 2014 02 28.61319 16 00 08.988 -11 47 18.44 13JD65 568 C~1XRf 2014 04 04.50472 15 59 15.763 -11 34 50.68 23.4r 13JD65 568 C~1XRf 2014 04 04.56390 15 59 15.571 -11 34 49.16 23.8r 13JD65 568 C~1XRf 2014 04 04.57011 15 59 15.543 -11 34 49.32 23.8r 13JD65 568 C~1XRf 2014 05 06.40386 15 56 55.020 -11 21 46.77 23.5r 13JD65 568 C~1XRf 2014 05 06.47074 15 56 54.664 -11 21 45.22 23.9r 13JD65 568 C~1XRf 2014 05 06.54679 15 56 54.254 -11 21 43.38 23.3r 13JD65 568 C~1XRf 2014 05 22.48569 15 55 27.881 -11 15 55.95 23.4r 13JD65 568 C~1XRf 2014 05 24.46712 15 55 16.975 -11 15 17.01 23.9r 13JD65 568 C~1XRf 2014 07 01.36763 15 52 09.601 -11 07 06.76 23.7r 13JD65 568 C~1XRf 2014 07 18.34104 15 51 14.191 -11 06 36.36 23.6r 13JD65 568 C~1XRf 2015 04 20.54525 16 05 36.676 -11 31 57.82 23.5r 13JD65 568 C~1XRf 2015 04 20.62472 16 05 36.319 -11 31 55.73 24.0r 13JD65 568 C~1XRf 2019 06 06.343940 16 31 14.267 -11 24 54.59 23.6G 13JD65 G37 C~36nw 2019 06 06.391810 16 31 14.005 -11 24 53.75 13JD65 G37 C~36nw
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 0.02
2 0.0027 0.00 0.16 0.00 -0.17
3 0.0028 0.00 -0.15 0.00 0.06
4 0.0274 0.00 -0.01 0.00 0.03
5 0.0764 0.00 0.10 0.00 0.03
6 0.0765 0.00 -0.02 0.00 0.06
7 0.0766 0.00 0.02 0.00 0.07
8 0.0820 0.00 0.04 0.00 0.04
9 0.0847 0.00 0.02 0.00 0.15
10 0.1529 0.00 0.00 0.00 -0.05
11 0.1583 0.00 -0.02 0.00 -0.08
12 0.8791 0.00 0.02 0.00 0.05
13 0.8900 0.00 -0.11 0.00 0.03
14 0.9855 0.00 0.02 0.00 0.01
15 0.9857 0.00 0.14 0.00 0.08
16 0.9857 0.00 0.04 0.00 -0.23
17 1.0728 0.00 -0.05 0.00 -0.03
18 1.0730 0.00 -0.02 0.00 -0.04
19 1.0732 0.00 -0.07 0.00 0.02
20 1.1169 0.00 0.06 0.00 0.02
21 1.1223 0.00 0.00 0.00 -0.06
22 1.2261 0.00 0.00 0.00 0.07
23 1.2725 0.00 -0.00 0.00 -0.02
24 2.0287 0.00 0.02 0.00 -0.12
25 2.0290 0.00 -0.01 0.00 0.02
26 6.1569 0.00 -0.06 0.00 -0.08
27 6.1570 0.00 0.04 0.00 0.13
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.
13JD65 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.139 39.139 39.139 ecceobj 0.089 0.089 0.089 incobj 13.053 13.053 13.053 qmin 34.424 34.423 34.426 qmax 44.845 44.845 44.847 amean 39.459 39.459 39.459 amin 39.117 39.117 39.117 amax 39.828 39.828 39.827 emean 0.101 0.101 0.101 emin 0.077 0.077 0.077 emax 0.128 0.128 0.128 imean 13.525 13.525 13.525 imin 12.846 12.846 12.846 imax 14.258 14.258 14.258 excite_mean 0.255 0.255 0.255 fracstop 1.000 1.000 1.000 cjmean 2.978 2.978 2.978 libcent 0 178.9 178.9 178.9 libamp 0 49.7 49.7 49.6 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 181.5 181.3 181.5 kozaiamp 180.0 180.0 180.0