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: 13JB65
# Created Sun Dec 22 02:09:28 2024
# Orbit generated from Bernstein formalism
# Fitting 32 observations of 32
# Arc: 4.13y
# First observation: 2013/04/09
# Last observation: 2017/05/26
Preliminary a, adot, b, bdot, g, gdot:
-0.000097 0.035870 0.000049 -0.016093 0.032210 0.000000
# Chi-squared of fit: 6.68 DOF: 58 RMS: 0.08
# Min/Max residuals: -0.21 0.18
# Exact a, adot, b, bdot, g, gdot:
1.766023E-05 3.546570E-02 -7.978613E-06 -1.591830E-02 3.206426E-02 3.915020E-04
# Covariance matrix:
1.9255E-13 -7.6106E-14 -1.1711E-14 2.5582E-14 1.6870E-13 -4.2923E-13
-7.6106E-14 2.3670E-13 3.5708E-14 -1.0512E-13 6.6474E-14 1.7761E-12
-1.1711E-14 3.5708E-14 8.1637E-14 -5.0892E-14 5.0519E-15 3.1568E-13
2.5582E-14 -1.0512E-13 -5.0892E-14 8.9587E-14 -2.9982E-14 -9.2578E-13
1.6870E-13 6.6474E-14 5.0519E-15 -2.9982E-14 3.3301E-13 5.1167E-13
-4.2923E-13 1.7761E-12 3.1568E-13 -9.2578E-13 5.1167E-13 1.5641E-11
# lat0 lon0 xBary yBary zBary JD0
6.861508 -121.039703 0.633884 0.092920 -0.772041 2456392.040188
# Heliocentric elements and errors
Epoch: 2456390.5000 = 2013/04/08
Mean Anomaly: 358.54039 +/- 0.025
Argument of Peri: 166.11033 +/- 0.037
Long of Asc Node: 72.43523 +/- 0.000
Inclination: 24.93812 +/- 0.000
Eccentricity: 0.18676729 +/- 0.0001
Semi-Major Axis: 39.29965773 +/- 0.0038
Time of Perihelion: 2456755.3526 +/- 6.3
Perihelion: 31.95976724 +/- 0.0040
Aphelion: 46.63954822 +/- 0.0051
Period (y) 246.3720 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -16.90897836 +/- 0.0003
Ecliptic Y -26.86745745 +/- 0.0005
Ecliptic Z 3.72573959 +/- 0.0001
Ecliptic XDOT 0.00248752 +/- 0.0000
Ecliptic YDOT -0.00172870 +/- 0.0000
Ecliptic ZDOT -0.00134534 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 31.96333766 +/- 0.0004
Geocenter to KBO 31.18736867 +/- 0.0006
# Hcoef: 8.36
The following table shows the complete astrometric record for 13JB65. 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 (13JB65) followed by the observatory code and reference code for the source of the astrometry.
2013 04 09.53941 15 53 05.323 -13 13 28.18 23.6r 13JB65 568 C~1XRe 2013 04 10.50850 15 53 00.957 -13 13 14.69 23.3r 13JB65 568 C~1XRe 2013 04 10.54891 15 53 00.767 -13 13 14.13 23.5r 13JB65 568 C~1XRe 2013 04 19.56175 15 52 16.395 -13 11 05.89 23.4r 13JB65 568 C~1XRe 2013 05 07.43997 15 50 33.324 -13 06 53.00 23.2r 13JB65 568 C~1XRe 2013 05 07.48420 15 50 33.048 -13 06 52.41 23.2r 13JB65 568 C~1XRe 2013 05 07.52439 15 50 32.789 -13 06 51.83 23.2r 13JB65 568 C~1XRe 2013 05 09.48456 15 50 20.661 -13 06 25.73 23.2r 13JB65 568 C~1XRe 2013 05 10.49178 15 50 14.385 -13 06 12.65 23.3r 13JB65 568 C~1XRe 2013 06 02.40662 15 47 49.979 -13 02 08.12 23.6r 13JB65 568 C~1XRe 2013 06 02.41172 15 47 49.963 -13 02 08.09 23.5r 13JB65 568 C~1XRe 2013 06 02.41674 15 47 49.914 -13 02 07.77 23.4r 13JB65 568 C~1XRe 2013 06 04.37273 15 47 37.925 -13 01 53.40 23.1r 13JB65 568 C~1XRe 2013 06 06.37603 15 47 25.773 -13 01 39.85 23.4r 13JB65 568 C~1XRe 2013 07 02.32839 15 45 08.296 -13 00 58.67 23.1r 13JB65 568 C~1XRe 2013 07 03.36611 15 45 03.808 -13 01 02.79 23.3r 13JB65 568 C~1XRe 2014 04 30.43644 15 58 42.974 -14 27 55.82 23.5r 13JB65 568 C~1XRe 2014 04 30.48774 15 58 42.676 -14 27 55.36 23.4r 13JB65 568 C~1XRe 2014 04 30.53949 15 58 42.369 -14 27 54.75 23.4r 13JB65 568 C~1XRe 2014 05 05.50559 15 58 12.787 -14 26 52.69 23.3r 13JB65 568 C~1XRe 2014 05 06.44715 15 58 07.072 -14 26 41.03 23.5r 13JB65 568 C~1XRe 2014 05 06.49809 15 58 06.758 -14 26 40.48 23.5r 13JB65 568 C~1XRe 2014 05 06.57421 15 58 06.282 -14 26 39.50 23.3r 13JB65 568 C~1XRe 2014 05 22.54166 15 56 25.710 -14 23 38.72 23.3r 13JB65 568 C~1XRe 2014 05 25.50065 15 56 06.790 -14 23 09.60 13JB65 568 C~1XRe 2014 06 02.47694 15 55 16.215 -14 22 00.94 23.2r 13JB65 568 C~1XRe 2014 07 01.38325 15 52 34.582 -14 20 30.69 13JB65 568 C~1XRe 2014 07 18.35698 15 51 29.012 -14 22 03.37 23.4r 13JB65 568 C~1XRe 2016 05 10.48176 16 12 49.101 -17 02 11.23 23.3r 13JB65 568 C~2LSW 2016 05 10.56060 16 12 48.595 -17 02 10.55 23.2r 13JB65 568 C~2LSW 2017 05 26.33878 16 18 53.44 -18 16 48.2 22.2R 13JB65 G37 C~2Gia 2017 05 26.39674 16 18 53.07 -18 16 47.8 13JB65 G37 C~2Gia
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 -0.04 0.00 0.03
2 0.0027 -65.16 0.00 -0.25 0.07
3 0.0028 -68.00 -0.01 -0.29 0.07
4 0.0274 -728.45 0.01 -11.74 0.07
5 0.0764 -2253.43 0.04 -84.28 0.04
6 0.0765 -2257.50 0.06 -84.56 0.04
7 0.0766 -2261.32 -0.04 -84.80 0.05
8 0.0820 -2440.01 0.02 -97.09 0.06
9 0.0847 -2532.39 0.06 -103.88 -0.06
10 0.1475 -4646.35 -0.05 -317.95 -0.15
11 0.1475 -4646.58 0.18 -317.97 -0.11
12 0.1475 -4647.35 -0.13 -317.82 0.11
13 0.1529 -4821.61 -0.08 -341.62 -0.00
14 0.1583 -4998.03 -0.06 -366.77 -0.01
15 0.2294 -6969.80 0.15 -763.37 0.09
16 0.2322 -7032.98 0.07 -781.73 0.04
17 1.0565 5740.74 -0.05 -3349.03 -0.02
18 1.0567 5736.41 0.09 -3349.46 -0.17
19 1.0568 5731.91 0.11 -3349.78 -0.21
20 1.0704 5298.28 -0.08 -3377.14 -0.10
21 1.0730 5214.58 -0.05 -3382.77 0.00
22 1.0731 5210.00 0.00 -3383.17 -0.06
23 1.0733 5203.03 -0.05 -3383.63 -0.04
24 1.1170 3735.24 -0.04 -3508.16 -0.04
25 1.1252 3460.16 0.06 -3536.67 0.07
26 1.1470 2726.83 -0.10 -3622.34 0.04
27 1.2261 410.85 -0.01 -4026.98 0.03
28 1.2726 -500.94 -0.10 -4319.46 0.13
29 3.0854 19611.30 0.06 -10052.68 -0.03
30 3.0856 19603.97 -0.03 -10053.37 -0.09
31 4.1281 25648.68 -0.09 -13541.63 0.07
32 4.1283 25643.33 0.12 -13542.17 0.10
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.
13JB65 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.164 39.176 39.153 ecceobj 0.185 0.185 0.184 incobj 24.937 24.937 24.937 qmin 31.408 31.459 31.454 qmax 47.736 47.765 47.760 amean 39.455 39.455 39.455 amin 39.151 39.154 39.153 amax 39.804 39.807 39.807 emean 0.160 0.160 0.160 emin 0.109 0.110 0.110 emax 0.200 0.200 0.201 imean 24.369 24.350 24.351 imin 23.365 23.368 23.358 imax 25.331 25.303 25.307 excite_mean 0.443 0.443 0.443 fracstop 1.000 1.000 1.000 cjmean 2.821 2.821 2.821 libcent 0 180.4 180.1 180.8 libamp 0 28.3 32.2 29.1 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 177.8 178.6 178.5 kozaiamp 180.0 180.0 180.0