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: 13JQ65
# Created Sun Nov 24 02:09:24 2024
# Orbit generated from Bernstein formalism
# Fitting 20 observations of 20
# Arc: 1.95y
# First observation: 2013/04/10
# Last observation: 2015/03/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000129 0.025414 0.000006 -0.001165 0.024805 0.000000
# Chi-squared of fit: 4.94 DOF: 34 RMS: 0.09
# Min/Max residuals: -0.20 0.22
# Exact a, adot, b, bdot, g, gdot:
1.627283E-05 2.547303E-02 -8.681509E-07 -1.170916E-03 2.504370E-02 2.757838E-03
# Covariance matrix:
3.0028E-13 -1.9194E-13 -5.8053E-15 3.6798E-15 2.8049E-13 5.8056E-13
-1.9194E-13 8.3545E-13 3.2064E-15 -3.1204E-14 1.9055E-13 1.8057E-11
-5.8053E-15 3.2064E-15 1.6071E-13 -1.4404E-13 -1.1049E-14 1.3851E-14
3.6798E-15 -3.1204E-14 -1.4404E-13 2.3919E-13 -7.4018E-15 -9.2490E-13
2.8049E-13 1.9055E-13 -1.1049E-14 -7.4018E-15 7.0444E-13 1.0180E-11
5.8056E-13 1.8057E-11 1.3851E-14 -9.2490E-13 1.0180E-11 5.7577E-10
# lat0 lon0 xBary yBary zBary JD0
8.197966 -120.402443 0.629612 0.111453 -0.773490 2456393.024908
# Heliocentric elements and errors
Epoch: 2456390.5000 = 2013/04/08
Mean Anomaly: 44.90878 +/- 0.162
Argument of Peri: 51.30339 +/- 0.256
Long of Asc Node: 131.39109 +/- 0.007
Inclination: 8.41680 +/- 0.000
Eccentricity: 0.12123904 +/- 0.0009
Semi-Major Axis: 44.12649449 +/- 0.0122
Time of Perihelion: 2443034.5019 +/- 47.9
Perihelion: 38.77664066 +/- 0.0393
Aphelion: 49.47634832 +/- 0.0402
Period (y) 293.1280 +/- 0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -20.93829611 +/- 0.0007
Ecliptic Y -34.44073486 +/- 0.0011
Ecliptic Z 5.69379998 +/- 0.0002
Ecliptic XDOT 0.00223530 +/- 0.0000
Ecliptic YDOT -0.00168208 +/- 0.0000
Ecliptic ZDOT -0.00008357 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.70621353 +/- 0.0010
Geocenter to KBO 39.93019463 +/- 0.0013
# Hcoef: 8.13
The following table shows the complete astrometric record for 13JQ65. 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 (13JQ65) followed by the observatory code and reference code for the source of the astrometry.
2013 04 10.52413 15 56 45.762 -12 02 56.07 24.5r 13JQ65 568 C~1XRg 2013 04 10.56492 15 56 45.618 -12 02 55.35 24.0r 13JQ65 568 C~1XRg 2013 05 07.45588 15 54 52.416 -11 54 47.69 24.2r 13JQ65 568 C~1XRg 2013 05 07.50007 15 54 52.194 -11 54 46.98 24.2r 13JQ65 568 C~1XRg 2013 05 07.54026 15 54 51.995 -11 54 46.26 24.0r 13JQ65 568 C~1XRg 2013 05 09.50053 15 54 42.636 -11 54 13.05 24.3r 13JQ65 568 C~1XRg 2013 05 10.50767 15 54 37.808 -11 53 56.10 24.7r 13JQ65 568 C~1XRg 2013 06 04.38901 15 52 36.414 -11 48 01.64 24.5r 13JQ65 568 C~1XRg 2013 06 06.39243 15 52 26.936 -11 47 39.76 23.9r 13JQ65 568 C~1XRg 2013 07 02.34516 15 50 38.737 -11 44 51.08 24.6r 13JQ65 568 C~1XRg 2014 03 06.59120 16 03 39.526 -12 33 44.55 24.1r 13JQ65 568 C~1XRg 2014 03 07.56585 16 03 39.204 -12 33 32.14 24.0r 13JQ65 568 C~1XRg 2014 04 30.44035 16 01 13.693 -12 18 48.03 24.0r 13JQ65 568 C~1XRg 2014 04 30.49188 16 01 13.450 -12 18 47.04 24.0r 13JQ65 568 C~1XRg 2014 04 30.54366 16 01 13.224 -12 18 45.95 23.5r 13JQ65 568 C~1XRg 2014 05 05.50954 16 00 50.529 -12 17 21.23 24.0r 13JQ65 568 C~1XRg 2014 05 06.45103 16 00 46.137 -12 17 05.39 24.3r 13JQ65 568 C~1XRg 2014 05 06.50198 16 00 45.893 -12 17 04.46 24.1r 13JQ65 568 C~1XRg 2014 06 02.44941 15 58 34.731 -12 10 34.22 24.1r 13JQ65 568 C~1XRg 2015 03 22.58694 16 09 06.334 -12 50 57.16 24.1r 13JQ65 568 C~1XRg
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 0.0001 -2.22 -0.01 0.27 0.00
3 0.0737 -1728.22 0.08 134.10 0.09
4 0.0739 -1731.56 -0.03 134.12 0.02
5 0.0740 -1734.56 -0.10 134.22 0.03
6 0.0793 -1875.84 -0.04 138.19 -0.07
7 0.0821 -1948.68 0.21 140.06 0.03
8 0.1502 -3765.89 -0.03 114.95 -0.01
9 0.1557 -3906.60 0.08 107.17 -0.06
10 0.2268 -5496.20 -0.11 -62.31 -0.20
11 0.9037 6314.64 -0.09 -581.01 -0.06
12 0.9063 6307.54 -0.08 -569.79 0.22
13 1.0538 4040.56 0.12 -131.24 -0.10
14 1.0540 4036.87 -0.02 -130.99 -0.03
15 1.0541 4033.40 0.10 -130.59 0.19
16 1.0677 3690.41 0.06 -114.79 -0.05
17 1.0703 3624.15 0.03 -112.29 -0.04
18 1.0704 3620.46 -0.00 -112.11 0.03
19 1.1442 1658.16 -0.12 -120.76 0.05
20 1.9468 11215.51 -0.01 -651.60 -0.08
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.
13JQ65 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.967 44.005 43.931 ecceobj 0.117 0.119 0.115 incobj 8.415 8.414 8.415 qmin 38.303 38.235 38.390 qmax 50.605 50.762 50.561 amean 44.301 44.344 44.270 amin 43.943 43.974 43.910 amax 44.707 44.748 44.671 emean 0.117 0.119 0.115 emin 0.102 0.104 0.100 emax 0.132 0.135 0.132 imean 7.171 7.151 7.160 imin 6.490 6.432 6.460 imax 7.968 7.969 7.961 excite_mean 0.171 0.172 0.170 fracstop 1.000 1.000 1.000 cjmean 3.070 3.070 3.070 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 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 180.9 180.0 180.2 kozaiamp 180.0 180.0 179.9