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: 13JG65
# Created Fri Nov 22 02:09:26 2024
# Orbit generated from Bernstein formalism
# Fitting 31 observations of 31
# Arc: 3.07y
# First observation: 2013/04/09
# Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
-0.000181 0.042858 0.000057 -0.010863 0.034481 0.000000
# Chi-squared of fit: 7.35 DOF: 56 RMS: 0.09
# Min/Max residuals: -0.17 0.20
# Exact a, adot, b, bdot, g, gdot:
1.912160E-05 4.223686E-02 -4.709854E-06 -1.072658E-02 3.419636E-02 -2.561270E-03
# Covariance matrix:
1.7093E-13 -9.4011E-14 -5.1206E-15 1.1527E-14 7.9216E-14 -3.6679E-13
-9.4011E-14 3.2919E-13 2.7065E-14 -7.8512E-14 1.5721E-13 2.5817E-12
-5.1206E-15 2.7065E-14 1.1009E-13 -6.5560E-14 1.2897E-14 2.5558E-13
1.1527E-14 -7.8512E-14 -6.5560E-14 7.7595E-14 -4.3076E-14 -7.3996E-13
7.9216E-14 1.5721E-13 1.2897E-14 -4.3076E-14 2.6035E-13 1.4373E-12
-3.6679E-13 2.5817E-12 2.5558E-13 -7.3996E-13 1.4373E-12 2.4327E-11
# lat0 lon0 xBary yBary zBary JD0
7.655298 -120.819142 0.636663 0.103304 -0.768430 2456392.055928
# Heliocentric elements and errors
Epoch: 2456390.5000 = 2013/04/08
Mean Anomaly: 346.52744 +/- 0.018
Argument of Peri: 174.60164 +/- 0.031
Long of Asc Node: 85.19561 +/- 0.000
Inclination: 15.95767 +/- 0.000
Eccentricity: 0.24689246 +/- 0.0001
Semi-Major Axis: 39.24087084 +/- 0.0031
Time of Perihelion: 2459750.6130 +/- 4.4
Perihelion: 29.55259566 +/- 0.0035
Aphelion: 48.92914601 +/- 0.0046
Period (y) 245.8194 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -15.79131790 +/- 0.0002
Ecliptic Y -25.22706890 +/- 0.0004
Ecliptic Z 3.89543153 +/- 0.0001
Ecliptic XDOT 0.00294328 +/- 0.0000
Ecliptic YDOT -0.00165585 +/- 0.0000
Ecliptic ZDOT -0.00087832 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 30.01574775 +/- 0.0003
Geocenter to KBO 29.24287911 +/- 0.0004
# Hcoef: 8.87
The following table shows the complete astrometric record for 13JG65. 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 (13JG65) followed by the observatory code and reference code for the source of the astrometry.
2013 04 09.55515 15 54 38.967 -12 29 39.26 23.9r 13JG65 568 C~1XRf 2013 04 10.52413 15 54 34.556 -12 29 21.14 23.8r 13JG65 568 C~1XRf 2013 04 10.56492 15 54 34.370 -12 29 20.33 24.1r 13JG65 568 C~1XRf 2013 04 19.57778 15 53 49.377 -12 26 30.07 23.9r 13JG65 568 C~1XRf 2013 05 07.45588 15 52 03.931 -12 20 59.50 23.6r 13JG65 568 C~1XRf 2013 05 07.50007 15 52 03.644 -12 20 58.73 23.6r 13JG65 568 C~1XRf 2013 05 07.54026 15 52 03.389 -12 20 57.98 23.7r 13JG65 568 C~1XRf 2013 06 04.37698 15 49 03.386 -12 14 22.34 23.4r 13JG65 568 C~1XRf 2013 06 06.37603 15 48 50.879 -12 14 03.09 23.6r 13JG65 568 C~1XRf 2013 07 02.32839 15 46 29.535 -12 12 27.38 23.7r 13JG65 568 C~1XRf 2013 07 03.36611 15 46 24.958 -12 12 29.96 23.7r 13JG65 568 C~1XRf 2014 03 06.58616 16 05 12.144 -13 43 06.56 23.5r 13JG65 568 C~1XRf 2014 05 01.40606 16 01 59.109 -13 29 27.92 23.3r 13JG65 568 C~1XRf 2014 05 01.45743 16 01 58.788 -13 29 27.01 23.7r 13JG65 568 C~1XRf 2014 05 01.51609 16 01 58.450 -13 29 25.82 23.9r 13JG65 568 C~1XRf 2014 05 04.40376 16 01 40.869 -13 28 37.99 23.5r 13JG65 568 C~1XRf 2014 05 04.50508 16 01 40.224 -13 28 36.18 13JG65 568 C~1XRf 2014 05 22.53753 15 59 43.926 -13 24 02.47 23.2r 13JG65 568 C~1XRf 2014 05 25.49675 15 59 24.382 -13 23 24.12 23.6r 13JG65 568 C~1XRf 2014 06 02.47294 15 58 32.094 -13 21 51.68 23.7r 13JG65 568 C~1XRf 2014 06 21.43206 15 56 36.541 -13 19 37.83 23.6r 13JG65 568 C~1XRf 2014 06 22.40477 15 56 31.148 -13 19 34.74 23.5r 13JG65 568 C~1XRf 2014 06 30.42685 15 55 49.326 -13 19 23.84 23.8r 13JG65 568 C~1XRf 2014 07 01.38714 15 55 44.681 -13 19 24.51 23.5r 13JG65 568 C~1XRf 2014 07 26.28881 15 54 16.323 -13 22 07.59 23.7r 13JG65 568 C~1XRf 2015 03 22.57427 16 14 11.050 -14 44 26.48 23.7r 13JG65 568 C~1XRf 2015 04 18.56543 16 12 35.595 -14 38 25.10 23.5r 13JG65 568 C~1XRf 2015 08 11.31763 16 03 05.998 -14 31 36.95 23.6r 13JG65 568 C~2LSW 2016 05 06.53851 16 20 24.093 -15 38 25.02 23.4r 13JG65 568 C~2LSW 2016 05 06.59080 16 20 23.743 -15 38 24.34 24.6u 13JG65 568 C~2LSW 2016 05 06.60444 16 20 23.674 -15 38 24.18 23.7r 13JG65 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 0.08 0.00 -0.05
2 0.0027 -66.96 -0.03 4.23 -0.00
3 0.0028 -69.79 0.05 4.46 0.07
4 0.0274 -749.82 -0.13 33.12 0.02
5 0.0764 -2329.70 0.01 31.42 0.03
6 0.0765 -2333.97 -0.02 31.29 0.01
7 0.0766 -2337.79 0.03 31.23 0.07
8 0.1528 -5000.61 0.17 -142.76 0.04
9 0.1583 -5183.94 0.06 -163.18 0.11
10 0.2294 -7230.01 -0.09 -515.65 -0.06
11 0.2322 -7295.05 -0.07 -532.69 -0.03
12 0.9063 9962.05 0.07 -2432.55 -0.06
13 1.0591 7035.63 -0.00 -2192.72 -0.10
14 1.0593 7030.86 -0.11 -2192.77 -0.07
15 1.0594 7025.78 0.17 -2192.60 0.20
16 1.0673 6764.66 0.05 -2197.47 -0.10
17 1.0676 6755.06 -0.11 -2197.60 0.01
18 1.1170 5036.62 -0.06 -2273.68 0.14
19 1.1251 4749.43 0.01 -2294.30 -0.15
20 1.1469 3983.24 -0.15 -2359.87 -0.03
21 1.1988 2304.84 0.03 -2576.12 -0.09
22 1.2015 2227.17 0.07 -2589.38 -0.14
23 1.2235 1627.63 -0.09 -2705.24 -0.01
24 1.2261 1561.44 -0.03 -2719.97 -0.06
25 1.2943 334.02 0.05 -3148.27 0.04
26 1.9494 18405.54 0.05 -4534.53 0.10
27 2.0233 16966.17 -0.15 -4441.01 0.08
28 2.3375 8742.90 0.10 -5654.46 0.05
29 3.0746 24381.97 0.14 -6736.89 0.04
30 3.0747 24376.80 -0.17 -6737.14 -0.03
31 3.0747 24375.78 0.07 -6737.16 -0.01
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.
13JG65 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.112 39.120 39.104 ecceobj 0.246 0.246 0.246 incobj 15.950 15.950 15.950 qmin 27.071 27.050 27.076 qmax 52.275 52.318 52.383 amean 39.454 39.454 39.454 amin 39.093 39.105 39.100 amax 39.885 39.877 39.900 emean 0.256 0.256 0.256 emin 0.177 0.176 0.178 emax 0.313 0.313 0.313 imean 14.365 14.342 14.393 imin 11.202 11.151 11.253 imax 18.047 18.059 18.034 excite_mean 0.360 0.360 0.360 fracstop 1.000 1.000 1.000 cjmean 2.904 2.904 2.904 libcent 0 179.6 179.5 179.9 libamp 0 29.4 25.4 34.2 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 88.8 88.5 89.1 kozaiamp 75.8 76.0 75.7