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: 13JH65
# Created Sun Dec 22 02:09:29 2024
# Orbit generated from Bernstein formalism
# Fitting 24 observations of 26
# Arc: 4.13y
# First observation: 2013/04/10
# Last observation: 2017/05/26
Preliminary a, adot, b, bdot, g, gdot:
-0.000952 0.046248 -0.000018 0.001118 0.034516 0.000000
# Chi-squared of fit: 15.87 DOF: 42 RMS: 0.14
# Min/Max residuals: -0.62 0.31
# Exact a, adot, b, bdot, g, gdot:
1.975462E-05 4.473990E-02 5.789713E-07 1.055798E-03 3.484376E-02 -5.590576E-03
# Covariance matrix:
2.1300E-13 -1.5946E-13 1.0624E-15 -4.5994E-15 1.1055E-13 -7.9536E-13
-1.5946E-13 3.5923E-13 -5.1854E-15 1.0996E-14 4.6325E-14 2.0819E-12
1.0624E-15 -5.1854E-15 1.0949E-13 -4.2923E-14 -2.4362E-15 -3.2935E-14
-4.5994E-15 1.0996E-14 -4.2923E-14 3.7247E-14 2.9677E-16 7.1436E-14
1.1055E-13 4.6325E-14 -2.4362E-15 2.9677E-16 2.7086E-13 2.1270E-13
-7.9536E-13 2.0819E-12 -3.2935E-14 7.1436E-14 2.1270E-13 1.3473E-11
# lat0 lon0 xBary yBary zBary JD0
7.605532 -119.560801 0.640323 0.102290 -0.765937 2456393.077738
# Heliocentric elements and errors
Epoch: 2456390.5000 = 2013/04/08
Mean Anomaly: 338.35345 +/- 0.010
Argument of Peri: 117.74547 +/- 0.020
Long of Asc Node: 160.60320 +/- 0.002
Inclination: 7.55351 +/- 0.000
Eccentricity: 0.28371435 +/- 0.0001
Semi-Major Axis: 39.10968076 +/- 0.0034
Time of Perihelion: 2461762.1901 +/- 2.4
Perihelion: 28.01370309 +/- 0.0034
Aphelion: 50.20565843 +/- 0.0050
Period (y) 244.5877 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -14.97131465 +/- 0.0002
Ecliptic Y -25.09817917 +/- 0.0004
Ecliptic Z 3.79850036 +/- 0.0001
Ecliptic XDOT 0.00327177 +/- 0.0000
Ecliptic YDOT -0.00134570 +/- 0.0000
Ecliptic ZDOT 0.00002423 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 29.47011139 +/- 0.0003
Geocenter to KBO 28.69954578 +/- 0.0004
# Hcoef: 9.36
The following table shows the complete astrometric record for 13JH65. 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 (13JH65) followed by the observatory code and reference code for the source of the astrometry.
2013 04 10.57696 15 59 36.713 -12 47 55.04 24.2r 13JH65 568 C~1XRf 2013 04 17.46844 15 59 04.051 -12 45 02.35 23.4r 13JH65 568 C~1XRf 2013 04 17.47543 15 59 04.058 -12 45 02.14 23.9r 13JH65 568 C~1XRf 2013 04 19.50094 15 58 53.618 -12 44 11.58 23.8r 13JH65 568 C~1XRf 2013 05 08.43031 15 57 03.498 -12 36 24.28 24.0r 13JH65 568 C~1XRf 2013 05 08.47938 15 57 03.174 -12 36 23.22 23.9r 13JH65 568 C~1XRf 2013 05 08.52324 15 57 02.905 -12 36 22.29 24.0r 13JH65 568 C~1XRf 2013 05 09.53023 15 56 56.539 -12 35 58.40 24.3r 13JH65 568 C~1XRf 2013 05 10.53581 15 56 50.153 -12 35 34.86 23.9r 13JH65 568 C~1XRf 2013 06 06.38838 15 53 57.015 -12 26 39.95 13JH65 568 C~1XRf 2013 07 02.34516 15 51 34.590 -12 22 18.00 13JH65 568 C~1XRf 2013 07 03.37823 15 51 29.960 -12 22 13.91 24.3r 13JH65 568 C~1XRf 2014 03 06.61136 16 11 15.496 -13 26 40.25 23.9r 13JH65 568 C~1XRf 2014 03 07.58601 16 11 15.655 -13 26 24.76 24.3r 13JH65 568 C~1XRf 2014 05 01.43366 16 08 16.074 -13 06 29.14 13JH65 568 C~1XRf 2014 05 01.48482 16 08 15.747 -13 06 27.86 13JH65 568 C~1XRf 2014 05 01.54533 16 08 15.376 -13 06 26.51 24.2r 13JH65 568 C~1XRf 2014 05 04.48162 16 07 57.836 -13 05 17.80 23.5r 13JH65 568 C~1XRf 2014 05 04.53323 16 07 57.516 -13 05 16.71 24.2r 13JH65 568 C~1XRf 2014 07 01.39102 16 02 01.640 -12 50 13.38 13JH65 568 C~1XRf 2014 07 18.36507 16 00 52.709 -12 50 03.21 24.0r 13JH65 568 C~1XRf 2015 03 22.57019 16 21 31.316 -13 46 59.37 24.2r 13JH65 568 C~2LSW 2016 05 29.37647 16 26 41.944 -13 47 50.20 24.3w 13JH65 568 C~2LSW 2016 06 03.41661 16 26 08.189 -13 46 34.37 24.0w 13JH65 568 C~2LSW 2017 05 26.34407 16 38 03.14 -14 12 07.1 23.4R 13JH65 G37 C~2Gia 2017 05 26.40282 16 38 02.76 -14 12 05.3 13JH65 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 0.11 0.00 -0.02
2 0.0189 -502.80 ( -0.04) 72.87 ( 0.44)
3 0.0189 -502.74 ( 0.57) 73.10 ( 0.60)
4 0.0244 -662.55 -0.11 91.79 0.06
5 0.0763 -2335.49 -0.01 222.59 0.03
6 0.0764 -2340.35 -0.12 222.66 -0.09
7 0.0765 -2344.40 0.08 222.77 -0.17
8 0.0793 -2440.51 -0.03 227.18 -0.05
9 0.0820 -2536.84 -0.06 231.17 -0.06
10 0.1555 -5128.91 -0.09 234.50 0.06
11 0.2266 -7226.20 0.19 57.48 -0.02
12 0.2294 -7293.48 -0.09 47.32 0.02
13 0.9036 10474.59 0.09 -283.47 0.19
14 0.9063 10473.93 0.04 -267.80 0.09
15 1.0564 7666.33 0.20 404.44 -0.10
16 1.0566 7661.39 -0.09 404.77 -0.07
17 1.0567 7655.80 -0.17 405.05 -0.16
18 1.0648 7390.75 0.09 422.99 0.05
19 1.0649 7385.94 0.10 423.15 -0.06
20 1.2233 2104.62 -0.06 288.62 0.02
21 1.2698 1114.66 0.08 97.46 0.18
22 1.9466 19572.40 -0.08 178.82 0.07
23 3.1343 24085.27 -0.05 934.98 0.24
24 3.1481 23581.20 -0.13 923.48 0.10
25 4.1253 34306.15 -0.03 1176.71 -0.62
26 4.1255 34300.24 0.13 1177.59 0.31
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.
13JH65 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.000 39.010 38.991 ecceobj 0.284 0.284 0.284 incobj 7.563 7.563 7.563 qmin 27.454 27.405 27.416 qmax 52.108 52.117 52.155 amean 39.455 39.455 39.455 amin 38.990 38.997 38.978 amax 40.010 39.986 40.065 emean 0.288 0.288 0.288 emin 0.272 0.271 0.274 emax 0.304 0.304 0.304 imean 7.306 7.365 7.272 imin 6.601 6.686 6.640 imax 8.030 8.110 7.879 excite_mean 0.315 0.315 0.315 fracstop 1.000 1.000 1.000 cjmean 2.938 2.938 2.938 libcent 0 180.4 179.8 180.0 libamp 0 84.3 80.3 89.4 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 176.8 180.6 172.7 kozaiamp 180.0 180.0 179.9