Orbit Fit and Astrometric record for 13JX67

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: 13JX67    
# Created Wed Feb 19 02:11:00 2020
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   33 observations of   33
# Arc:   6.15y
# First observation: 2013/04/10
#  Last observation: 2019/06/06
# Chi-squared of fit:     3.80 DOF:   60 RMS:  0.06
# Min/Max residuals:    -0.17    0.12
# Exact a, adot, b, bdot, g, gdot:
  1.594111E-05  2.457188E-02 -2.321657E-06 -3.229364E-03  2.439967E-02  2.376136E-03
# Covariance matrix:
  1.6008E-13 -1.0531E-13 -7.3708E-15  1.2607E-14  1.0315E-13 -6.4790E-13
 -1.0531E-13  2.1246E-13  1.2998E-14 -2.8181E-14  2.6736E-14  1.4354E-12
 -7.3708E-15  1.2998E-14  6.8599E-14 -1.7629E-14 -1.7801E-15  9.2828E-14
  1.2607E-14 -2.8181E-14 -1.7629E-14  1.4673E-14 -3.5078E-15 -2.0055E-13
  1.0315E-13  2.6736E-14 -1.7801E-15 -3.5078E-15  2.5470E-13  1.6610E-13
 -6.4790E-13  1.4354E-12  9.2828E-14 -2.0055E-13  1.6610E-13  1.0216E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.660234 -119.975403    0.635419    0.103560   -0.769829  2456393.024908
# Heliocentric elements and errors
Epoch:              2456392.5000  =  2013/04/10
Mean Anomaly:           35.33546 +/-     0.027
Argument of Peri:       89.24335 +/-     0.039
Long of Asc Node:      104.47911 +/-     0.001
Inclination:            10.51165 +/-     0.000
Eccentricity:         0.12683644 +/-    0.0001
Semi-Major Axis:     46.24955410 +/-    0.0053
Time of Perihelion: 2445116.1641 +/-       8.9
Perihelion:          40.38342537 +/-    0.0078
Aphelion:            52.11568284 +/-    0.0087
Period (y)              314.5354 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -21.23139721 +/-    0.0004
Ecliptic Y          -35.53848224 +/-    0.0007
Ecliptic Z            5.46306333 +/-    0.0001
Ecliptic XDOT         0.00222592 +/-    0.0000
Ecliptic YDOT        -0.00164796 +/-    0.0000
Ecliptic ZDOT        -0.00032345 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.75639481 +/-    0.0007
Geocenter to KBO     40.98412133 +/-    0.0008
# Hcoef:  6.72

The following table shows the complete astrometric record for 13JX67. 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 (13JX67) followed by the observatory code and reference code for the source of the astrometry.

2013 04  10.52413  15 58 00.424  -12 39 42.67  22.7r 13JX67    568  C~2lTW      
2013 04  10.56492  15 58 00.283  -12 39 42.04  22.6r 13JX67    568  C~2lTW      
2013 04  17.46844  15 57 35.263  -12 37 49.90  23.0r 13JX67    568  C~2lTW      
2013 04  17.47543  15 57 35.245  -12 37 49.83  22.6r 13JX67    568  C~2lTW      
2013 04  19.57778  15 57 27.052  -12 37 15.42  22.8r 13JX67    568  C~2lTW      
2013 05  08.43031  15 56 04.825  -12 32 15.07  22.7r 13JX67    568  C~2lTW      
2013 05  08.47938  15 56 04.596  -12 32 14.33  22.8r 13JX67    568  C~2lTW      
2013 05  08.52324  15 56 04.382  -12 32 13.65  22.8r 13JX67    568  C~2lTW      
2013 05  09.53023  15 55 59.645  -12 31 58.50  22.7r 13JX67    568  C~2lTW      
2013 05  10.53581  15 55 54.901  -12 31 43.45  22.7r 13JX67    568  C~2lTW      
2013 06  04.38901  15 53 55.784  -12 26 27.50  22.6r 13JX67    568  C~2lTW      
2013 06  06.39243  15 53 46.455  -12 26 08.11  22.8r 13JX67    568  C~2lTW      
2013 07  02.34127  15 51 59.675  -12 23 42.47  22.9r 13JX67    568  C~2lTW      
2013 07  03.37823  15 51 56.142  -12 23 41.13  22.7r 13JX67    568  C~2lTW      
2014 03  06.59120  16 04 35.832  -13 15 13.49  23.1r 13JX67    568  C~2lTW      
2014 04  30.44035  16 02 12.840  -13 02 24.17  22.7r 13JX67    568  C~2lTW      
2014 04  30.49188  16 02 12.603  -13 02 23.47  22.7r 13JX67    568  C~2lTW      
2014 04  30.54366  16 02 12.368  -13 02 22.54  22.6r 13JX67    568  C~2lTW      
2014 04  30.54871  16 02 12.350  -13 02 22.52  22.8r 13JX67    568  C~2lTW      
2014 05  05.50954  16 01 50.104  -13 01 07.44  22.9r 13JX67    568  C~2lTW      
2014 05  06.45103  16 01 45.796  -13 00 53.39  22.7r 13JX67    568  C~2lTW      
2014 05  06.50198  16 01 45.556  -13 00 52.64  22.8r 13JX67    568  C~2lTW      
2014 05  06.57809  16 01 45.199  -13 00 51.48  22.7r 13JX67    568  C~2lTW      
2014 06  21.43206  15 58 11.329  -12 52 36.75  22.8r 13JX67    568  C~2lTW      
2014 06  22.40477  15 58 07.323  -12 52 31.87  22.7r 13JX67    568  C~2lTW      
2014 06  30.42685  15 57 36.160  -12 52 02.82  22.8r 13JX67    568  C~2lTW      
2015 03  22.58694  16 09 46.707  -13 39 09.67  22.7r 13JX67    568  C~2lTW      
2015 04  18.50253  16 08 32.677  -13 32 53.52  22.9r 13JX67    568  C~2lTW      
2019 05  06.313270 16 29 22.65   -15 12 49.2   22.9G 13JX67    705  C~39ob      
2019 05  06.362740 16 29 22.41   -15 12 48.6   22.8G 13JX67    705  C~39ob      
2019 05  06.432900 16 29 22.11   -15 12 48.0   23.1G 13JX67    705  C~39ob      
2019 06  06.332720 16 26 55.625  -15 07 33.17  22.7G 13JX67    G37  C~36nx      
2019 06  06.384710 16 26 55.357  -15 07 32.59        13JX67    G37  C~36nx      

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     0.01       0.00     0.05
  2   0.0001      0.00     0.03       0.00     0.02
  3   0.0190      0.00    -0.08       0.00     0.02
  4   0.0190      0.00     0.06       0.00    -0.02
  5   0.0248      0.00     0.00       0.00     0.06
  6   0.0764      0.00     0.04       0.00     0.06
  7   0.0765      0.00     0.12       0.00     0.05
  8   0.0767      0.00     0.05       0.00     0.06
  9   0.0794      0.00    -0.04       0.00     0.00
 10   0.0822      0.00     0.00       0.00    -0.01
 11   0.1502      0.00    -0.04       0.00     0.03
 12   0.1557      0.00     0.06       0.00    -0.07
 13   0.2267      0.00    -0.01       0.00    -0.07
 14   0.2296      0.00    -0.01       0.00    -0.05
 15   0.9037      0.00    -0.07       0.00    -0.03
 16   1.0538      0.00     0.11       0.00     0.02
 17   1.0540      0.00     0.01       0.00    -0.07
 18   1.0541      0.00    -0.03       0.00     0.06
 19   1.0541      0.00     0.04       0.00     0.01
 20   1.0677      0.00    -0.01       0.00    -0.02
 21   1.0703      0.00    -0.01       0.00     0.01
 22   1.0704      0.00    -0.03       0.00     0.00
 23   1.0706      0.00    -0.04       0.00     0.03
 24   1.1962      0.00    -0.03       0.00    -0.06
 25   1.1989      0.00    -0.05       0.00    -0.06
 26   1.2208      0.00     0.01       0.00     0.01
 27   1.9468      0.00     0.02       0.00    -0.00
 28   2.0205      0.00     0.01       0.00    -0.11
 29   6.0692      0.00     0.12       0.00     0.08
 30   6.0694      0.00    -0.17       0.00     0.10
 31   6.0696      0.00     0.01       0.00    -0.13
 32   6.1542      0.00     0.10       0.00    -0.07
 33   6.1543      0.00    -0.10       0.00     0.09

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.

13JX67    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.078    46.078    46.078
ecceobj         0.123     0.123     0.123
incobj         10.503    10.503    10.503
qmin           39.957    39.944    39.949
qmax           53.313    53.289    53.286
amean          46.459    46.458    46.458
amin           46.062    46.068    46.067
amax           46.887    46.891    46.887
emean           0.125     0.125     0.125
emin            0.114     0.114     0.114
emax            0.137     0.137     0.137
imean           8.916     8.915     8.913
imin            8.514     8.517     8.511
imax            9.344     9.343     9.345
excite_mean     0.199     0.199     0.199
fracstop        1.000     1.000     1.000
cjmean          3.083     3.083     3.083

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       180.7     180.7     180.6
kozaiamp        180.0     180.0     180.0