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: 13JV64
# Created Wed Jul 2 01:09:27 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 27 observations of 27
# Arc: 12.13y
# First observation: 2013/04/10
# Last observation: 2025/05/27
# Chi-squared of fit: 161.36 DOF: 48 RMS: 0.43
# Min/Max residuals: -2.12 0.80
# Exact a, adot, b, bdot, g, gdot:
1.064816E-05 1.365302E-02 6.205735E-06 7.942813E-03 1.903369E-02 -9.565581E-03
# Covariance matrix:
1.7266E-13 -1.0043E-13 3.1951E-14 -6.1055E-14 1.0892E-13 -5.2459E-13
-1.0043E-13 2.0280E-13 -6.8101E-14 1.2593E-13 4.3222E-14 1.0910E-12
3.1951E-14 -6.8101E-14 9.4326E-14 -5.1303E-14 -1.4331E-14 -3.7467E-13
-6.1055E-14 1.2593E-13 -5.1303E-14 8.4531E-14 2.2167E-14 6.9340E-13
1.0892E-13 4.3222E-14 -1.4331E-14 2.2167E-14 2.9318E-13 2.0157E-13
-5.2459E-13 1.0910E-12 -3.7467E-13 6.9340E-13 2.0157E-13 6.0058E-12
# lat0 lon0 xBary yBary zBary JD0
8.230509 -121.103034 0.620010 0.112986 -0.780988 2456393.024908
# Heliocentric elements and errors
Epoch: 2456392.5000 = 2013/04/10
Mean Anomaly: 326.73053 +/- 0.013
Argument of Peri: 114.34621 +/- 0.009
Long of Asc Node: 224.75228 +/- 0.000
Inclination: 31.45137 +/- 0.000
Eccentricity: 0.57379021 +/- 0.0001
Semi-Major Axis: 72.62371130 +/- 0.0180
Time of Perihelion: 2477283.5130 +/- 76.8
Perihelion: 30.95293672 +/- 0.0128
Aphelion: 114.29448588 +/- 0.0302
Period (y) 618.9077 +/- 0.23
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -27.79804252 +/- 0.0008
Ecliptic Y -44.87524868 +/- 0.0013
Ecliptic Z 7.52154812 +/- 0.0002
Ecliptic XDOT 0.00246320 +/- 0.0000
Ecliptic YDOT 0.00029188 +/- 0.0000
Ecliptic ZDOT 0.00093391 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 53.32108329 +/- 0.0011
Geocenter to KBO 52.53887439 +/- 0.0015
# Hcoef: 7.33
The following table shows the complete astrometric record for 13JV64. 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 (13JV64) followed by the observatory code and reference code for the source of the astrometry.
2013 04 10.52413 15 54 01.029 -11 52 22.48 24.2r 13JV64 568 C~1XRe 2013 04 10.56492 15 54 00.903 -11 52 21.69 24.5r 13JV64 568 C~1XRe 2013 04 19.57778 15 53 33.558 -11 49 23.56 24.1r 13JV64 568 C~1XRe 2013 05 07.45588 15 52 30.505 -11 43 36.52 24.7r 13JV64 568 C~1XRe 2013 05 07.50007 15 52 30.337 -11 43 35.57 24.6r 13JV64 568 C~1XRe 2013 05 07.54026 15 52 30.189 -11 43 34.72 24.4r 13JV64 568 C~1XRe 2013 05 09.50053 15 52 22.782 -11 42 58.36 24.6r 13JV64 568 C~1XRe 2013 05 10.50767 15 52 18.946 -11 42 39.66 24.7r 13JV64 568 C~1XRe 2013 06 04.38901 15 50 43.143 -11 35 48.80 24.4r 13JV64 568 C~1XRe 2013 06 06.39243 15 50 35.660 -11 35 20.85 13JV64 568 C~1XRe 2013 07 02.34516 15 49 09.868 -11 30 48.19 13JV64 568 C~1XRe 2013 07 03.38213 15 49 07.036 -11 30 41.75 24.5r 13JV64 568 C~1XRe 2014 02 24.63659 15 58 33.603 -11 48 34.82 13JV64 568 C~1XRe 2014 02 28.61319 15 58 34.281 -11 47 38.06 13JV64 568 C~1XRe 2014 04 04.50472 15 57 49.863 -11 37 21.50 25.1r 13JV64 568 C~1XRe 2014 04 30.40923 15 56 29.967 -11 28 45.52 24.1r 13JV64 568 C~1XRe 2014 04 30.46055 15 56 29.764 -11 28 44.39 24.5r 13JV64 568 C~1XRe 2014 05 05.46203 15 56 11.446 -11 27 07.83 24.6r 13JV64 568 C~1XRe 2014 05 06.40386 15 56 07.901 -11 26 49.72 24.0r 13JV64 568 C~1XRe 2014 05 06.47074 15 56 07.647 -11 26 48.63 24.3r 13JV64 568 C~1XRe 2014 05 06.54679 15 56 07.345 -11 26 47.01 24.5r 13JV64 568 C~1XRe 2014 05 22.48569 15 55 05.775 -11 22 00.86 13JV64 568 C~1XRe 2014 05 24.46712 15 54 57.995 -11 21 28.07 24.2r 13JV64 568 C~1XRe 2014 07 01.36763 15 52 43.358 -11 13 50.48 24.7r 13JV64 568 C~1XRe 2014 07 18.34104 15 52 01.946 -11 12 31.94 24.7r 13JV64 568 C~1XRe 2025 05 27.37298 16 38 23.000 -07 34 00.23 24.2G 13JV64 G37 2025 05 27.41188 16 38 22.819 -07 33 59.29 13JV64 G37
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 0.16 0.00 0.05
2 0.0001 0.00 0.04 0.00 0.04
3 0.0248 0.00 -0.25 0.00 -0.15
4 0.0737 0.00 -0.05 0.00 -0.12
5 0.0739 0.00 -0.03 0.00 -0.00
6 0.0740 0.00 0.06 0.00 0.09
7 0.0793 0.00 0.10 0.00 -0.11
8 0.0821 0.00 0.05 0.00 -0.02
9 0.1502 0.00 -0.00 0.00 0.04
10 0.1557 0.00 0.03 0.00 0.03
11 0.2268 0.00 -0.15 0.00 0.43
12 0.2296 0.00 0.14 0.00 -0.24
13 0.8764 0.00 -0.09 0.00 0.05
14 0.8873 0.00 -0.07 0.00 0.07
15 0.9828 0.00 0.04 0.00 -0.08
16 1.0538 0.00 0.15 0.00 -0.08
17 1.0539 0.00 -0.07 0.00 0.05
18 1.0676 0.00 0.39 0.00 -0.08
19 1.0702 0.00 -0.00 0.00 0.08
20 1.0704 0.00 0.02 0.00 -0.10
21 1.0706 0.00 -0.16 0.00 0.07
22 1.1142 0.00 0.01 0.00 -0.05
23 1.1196 0.00 -0.21 0.00 -0.09
24 1.2234 0.00 -0.07 0.00 0.05
25 1.2699 0.00 0.09 0.00 0.08
26 12.1283 0.00 -1.96 0.00 0.49
27 12.1284 0.00 -2.12 0.00 0.80
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.
13JV64 quality flag:2 Type: CENTAURS CENTAURS SCATNEAR axisobj 72.694 72.693 72.695 ecceobj 0.576 0.576 0.576 incobj 31.523 31.523 31.523 qmin 29.478 29.973 30.468 qmax 123.515 123.479 119.499 amean 74.045 73.858 73.597 amin 71.234 72.086 72.132 amax 76.917 77.646 76.295 emean 0.573 0.570 0.564 emin 0.541 0.541 0.540 emax 0.608 0.593 0.586 imean 32.591 32.854 33.234 imin 30.767 31.559 31.995 imax 34.012 34.463 34.468 excite_mean 0.787 0.787 0.786 fracstop 1.000 1.000 1.000 cjmean 2.569 2.568 2.568 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 216.2 244.4 239.2 kozaiamp 180.0 179.8 121.9