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: 13JA65
# Created Fri Nov 22 02:09:26 2024
# Orbit generated from Bernstein formalism
# Fitting 30 observations of 31
# Arc: 2.00y
# First observation: 2013/04/19
# Last observation: 2015/04/20
Preliminary a, adot, b, bdot, g, gdot:
-0.000246 0.035058 0.000004 0.003076 0.029983 0.000000
# Chi-squared of fit: 11.10 DOF: 54 RMS: 0.11
# Min/Max residuals: -0.22 0.29
# Exact a, adot, b, bdot, g, gdot:
1.906954E-05 3.503775E-02 1.504786E-06 3.083438E-03 3.040679E-02 1.615956E-03
# Covariance matrix:
1.6779E-13 -1.5060E-13 1.2562E-16 -1.0384E-15 1.1350E-13 -5.6381E-13
-1.5060E-13 6.2032E-13 -1.0088E-14 4.6853E-14 1.0895E-13 9.4495E-12
1.2562E-16 -1.0088E-14 1.0964E-13 -9.4818E-14 -4.9747E-15 -2.1282E-13
-1.0384E-15 4.6853E-14 -9.4818E-14 1.5080E-13 2.1988E-14 9.8341E-13
1.1350E-13 1.0895E-13 -4.9747E-15 2.1988E-14 3.3560E-13 3.5650E-12
-5.6381E-13 9.4495E-12 -2.1282E-13 9.8341E-13 3.5650E-12 1.9443E-10
# lat0 lon0 xBary yBary zBary JD0
9.074972 -122.519885 0.470975 0.140273 -0.878152 2456402.058538
# Heliocentric elements and errors
Epoch: 2456400.5000 = 2013/04/18
Mean Anomaly: 10.88889 +/- 0.122
Argument of Peri: 45.17134 +/- 0.169
Long of Asc Node: 177.13858 +/- 0.003
Inclination: 10.22477 +/- 0.000
Eccentricity: 0.14672101 +/- 0.0002
Semi-Major Axis: 39.40577332 +/- 0.0045
Time of Perihelion: 2453667.6283 +/- 30.7
Perihelion: 33.62411851 +/- 0.0074
Aphelion: 45.18742813 +/- 0.0081
Period (y) 247.3705 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -18.33276312 +/- 0.0003
Ecliptic Y -27.87814457 +/- 0.0005
Ecliptic Z 5.18731740 +/- 0.0001
Ecliptic XDOT 0.00260015 +/- 0.0000
Ecliptic YDOT -0.00177999 +/- 0.0000
Ecliptic ZDOT 0.00029725 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 33.76669083 +/- 0.0005
Geocenter to KBO 32.88739236 +/- 0.0006
# Hcoef: 8.95
The following table shows the complete astrometric record for 13JA65. 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 (13JA65) followed by the observatory code and reference code for the source of the astrometry.
2013 04 19.55776 15 49 10.318 -10 44 54.50 24.6r 13JA65 568 C~1XRe 2013 05 04.43329 15 47 53.496 -10 38 39.80 24.1r 13JA65 568 C~1XRe 2013 05 04.44379 15 47 53.461 -10 38 39.62 13JA65 568 C~1XRe 2013 05 07.43599 15 47 36.868 -10 37 27.77 24.2r 13JA65 568 C~1XRe 2013 05 07.48020 15 47 36.618 -10 37 26.69 23.9r 13JA65 568 C~1XRe 2013 05 07.52039 15 47 36.397 -10 37 25.73 24.3r 13JA65 568 C~1XRe 2013 05 09.48057 15 47 25.404 -10 36 39.69 24.1r 13JA65 568 C~1XRe 2013 05 10.48774 15 47 19.725 -10 36 16.30 24.1r 13JA65 568 C~1XRe 2013 06 01.40276 15 45 14.929 -10 28 57.00 24.2r 13JA65 568 C~1XRe 2013 06 01.40895 15 45 14.917 -10 28 56.61 13JA65 568 C~1XRe 2013 06 02.40261 15 45 09.391 -10 28 40.64 24.2r 13JA65 568 C~1XRe 2013 06 06.37184 15 44 47.649 -10 27 39.68 24.0r 13JA65 568 C~1XRe 2013 07 02.32424 15 42 45.336 -10 23 45.96 23.9r 13JA65 568 C~1XRe 2013 07 03.36215 15 42 41.403 -10 23 43.15 24.1r 13JA65 568 C~1XRe 2014 02 24.63659 15 59 12.187 -11 20 27.39 13JA65 568 C~1XRe 2014 02 28.61319 15 59 14.891 -11 19 21.95 13JA65 568 C~1XRe 2014 03 06.54079 15 59 15.354 -11 17 34.76 13JA65 568 C~1XRe 2014 04 04.50472 15 58 19.740 -11 06 44.87 24.1r 13JA65 568 C~1XRe 2014 04 04.56390 15 58 19.549 -11 06 43.30 13JA65 568 C~1XRe 2014 04 04.57011 15 58 19.509 -11 06 42.70 24.3r 13JA65 568 C~1XRe 2014 04 30.40923 15 56 24.732 -10 55 58.65 24.1r 13JA65 568 C~1XRe 2014 04 30.46055 15 56 24.457 -10 55 57.21 24.3r 13JA65 568 C~1XRe 2014 04 30.51229 15 56 24.166 -10 55 56.04 23.9r 13JA65 568 C~1XRe 2014 05 05.46203 15 55 57.631 -10 53 57.89 24.5r 13JA65 568 C~1XRe 2014 05 06.40386 15 55 52.468 -10 53 36.23 24.1r 13JA65 568 C~1XRe 2014 05 06.47074 15 55 52.089 -10 53 34.58 24.0r 13JA65 568 C~1XRe 2014 05 06.54679 15 55 51.661 -10 53 32.89 24.1r 13JA65 568 C~1XRe 2014 06 02.45329 15 53 18.720 -10 44 37.30 24.3r 13JA65 568 C~1XRe 2014 07 18.34104 15 49 57.739 -10 39 57.91 24.1r 13JA65 568 C~1XRe 2015 04 20.54525 16 05 22.012 -11 14 44.88 24.1r 13JA65 568 C~1XRe 2015 04 20.62472 16 05 21.626 -11 14 42.85 24.3r 13JA65 568 C~1XRe
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 -0.18 0.00 0.02
2 0.0407 -1186.79 -0.06 118.64 -0.11
3 0.0408 -1187.33 0.29 118.71 -0.11
4 0.0489 -1441.76 -0.10 135.30 -0.08
5 0.0491 -1445.59 -0.09 135.54 -0.04
6 0.0492 -1448.98 0.02 135.77 -0.01
7 0.0545 -1617.21 -0.06 145.20 -0.01
8 0.0573 -1704.04 -0.01 149.68 0.06
9 0.1173 -3596.25 -0.15 173.50 -0.06
10 0.1173 -3596.51 0.12 173.84 0.29
11 0.1200 -3679.56 0.08 171.42 0.03
12 0.1309 -4005.92 0.12 160.01 -0.06
13 0.2020 -5818.22 0.02 -12.49 0.12
14 0.2048 -5875.46 -0.01 -22.68 0.01
15 0.8517 9117.77 0.22 -191.09 0.05
16 0.8626 9143.00 0.07 -118.71 0.06
17 0.8788 9127.18 0.08 -12.36 -0.10
18 0.9581 8189.06 -0.22 451.72 -0.10
19 0.9583 8185.98 0.02 452.67 0.06
20 0.9583 8185.28 ( -0.33) 453.13 ( 0.44)
21 1.0290 6395.28 0.05 726.08 -0.17
22 1.0292 6391.01 0.01 726.63 0.03
23 1.0293 6386.57 -0.16 726.87 -0.09
24 1.0429 5979.22 0.08 759.45 0.28
25 1.0454 5900.24 0.01 764.47 -0.06
26 1.0456 5894.43 -0.08 764.90 0.03
27 1.0458 5887.90 -0.09 765.21 -0.06
28 1.1195 3570.92 0.00 807.65 0.02
29 1.2451 617.76 0.04 441.41 0.05
30 2.0013 14386.53 0.12 1272.77 -0.03
31 2.0016 14380.52 -0.12 1273.59 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.
13JA65 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.271 39.287 39.255 ecceobj 0.144 0.144 0.143 incobj 10.244 10.244 10.244 qmin 32.752 32.779 32.794 qmax 46.615 46.659 46.561 amean 39.457 39.457 39.458 amin 39.053 39.029 39.058 amax 39.918 39.912 39.894 emean 0.147 0.150 0.145 emin 0.125 0.128 0.126 emax 0.168 0.170 0.168 imean 10.506 10.232 10.593 imin 9.572 9.478 9.542 imax 11.273 11.025 11.452 excite_mean 0.234 0.233 0.235 fracstop 1.000 1.000 1.000 cjmean 2.990 2.991 2.990 libcent 0 181.7 179.9 180.2 libamp 0 78.2 86.7 69.6 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 180.7 182.7 183.9 kozaiamp 179.9 180.0 180.0