Orbit Fit and Astrometric record for 13JV64

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 Tue Jul 15 01:09:29 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:    15.03 DOF:     48 RMS:  0.13
# Min/Max residuals:    -0.27    0.46
# Exact a, adot, b, bdot, g, gdot:
  1.081038E-05  1.365279E-02  5.961235E-06  7.943257E-03  1.903373E-02 -9.562575E-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:          326.71022 +/-     0.013
Argument of Peri:      114.34795 +/-     0.009
Long of Asc Node:      224.75323 +/-     0.000
Inclination:            31.45308 +/-     0.000
Eccentricity:         0.57361513 +/-    0.0001
Semi-Major Axis:     72.60190573 +/-    0.0180
Time of Perihelion: 2477286.8494 +/-      76.8
Perihelion:          30.95635391 +/-    0.0128
Aphelion:           114.24745754 +/-    0.0302
Period (y)              618.6289 +/-      0.23
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.79798101 +/-    0.0008
Ecliptic Y          -44.87516322 +/-    0.0013
Ecliptic Z            7.52151996 +/-    0.0002
Ecliptic XDOT         0.00246295 +/-    0.0000
Ecliptic YDOT         0.00029154 +/-    0.0000
Ecliptic ZDOT         0.00093404 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   53.32097519 +/-    0.0011
Geocenter to KBO     52.53876635 +/-    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  27.372980 16 38 23.000  -07 34 00.23  24.2G 13JV64    G37  C~8vD9      
2025 05  27.411880 16 38 22.819  -07 33 59.29        13JV64    G37  C~8vD9      

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     0.14       0.00     0.11
     2   0.0001      0.00     0.01       0.00     0.09
     3   0.0248      0.00    -0.27       0.00    -0.09
     4   0.0737      0.00    -0.07       0.00    -0.07
     5   0.0739      0.00    -0.05       0.00     0.05
     6   0.0740      0.00     0.04       0.00     0.14
     7   0.0793      0.00     0.08       0.00    -0.06
     8   0.0821      0.00     0.04       0.00     0.02
     9   0.1502      0.00    -0.01       0.00     0.08
    10   0.1557      0.00     0.01       0.00     0.07
    11   0.2268      0.00    -0.16       0.00     0.46
    12   0.2296      0.00     0.13       0.00    -0.21
    13   0.8764      0.00    -0.08       0.00     0.02
    14   0.8873      0.00    -0.05       0.00     0.04
    15   0.9828      0.00     0.06       0.00    -0.12
    16   1.0538      0.00     0.17       0.00    -0.13
    17   1.0539      0.00    -0.05       0.00     0.00
    18   1.0676      0.00     0.41       0.00    -0.13
    19   1.0702      0.00     0.01       0.00     0.03
    20   1.0704      0.00     0.03       0.00    -0.14
    21   1.0706      0.00    -0.14       0.00     0.03
    22   1.1142      0.00     0.03       0.00    -0.10
    23   1.1196      0.00    -0.19       0.00    -0.14
    24   1.2234      0.00    -0.06       0.00    -0.01
    25   1.2699      0.00     0.10       0.00     0.02
    26  12.1283      0.00     0.08       0.00    -0.14
    27  12.1284      0.00    -0.08       0.00     0.18

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  SCATNEAR  CENTAURS

axisobj        72.672    72.671    72.673
ecceobj         0.576     0.576     0.576
incobj         31.525    31.525    31.525
qmin           29.007    30.309    30.114
qmax          119.376   117.953   121.438
amean          72.618    72.554    74.117
amin           68.974    70.593    72.070
amax           74.974    75.216    76.797
emean           0.568     0.554     0.570
emin            0.533     0.527     0.545
emax            0.602     0.581     0.596
imean          32.397    33.419    32.960
imin           30.359    31.947    31.657
imax           33.944    34.804    34.229
excite_mean     0.781     0.782     0.788
fracstop        1.000     1.000     1.000
cjmean          2.570     2.570     2.569

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       203.7     207.5     227.0
kozaiamp        180.0     180.0     117.6