Orbit Fit and Astrometric record for 13JS65

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: 13JS65    
# Created Sun Oct 22 01:38:17 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   24
# Arc:   3.13y
# First observation: 2013/04/10
#  Last observation: 2016/05/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000210   0.025584  -0.000003   0.004696   0.025422   0.000000
# Chi-squared of fit:     8.06 DOF:   42 RMS:  0.10
# Min/Max residuals:    -0.23    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.608732E-05  2.546688E-02  2.722551E-06  4.668549E-03  2.567498E-02  4.730567E-04
# Covariance matrix:
  2.2975E-13 -2.8256E-13  1.2697E-14 -5.3618E-14  1.2229E-13 -3.7198E-12
 -2.8256E-13  9.3991E-13 -5.3574E-14  2.0824E-13  1.3020E-14  1.4492E-11
  1.2697E-14 -5.3574E-14  9.9692E-14 -6.5018E-14 -3.6252E-15 -9.0284E-13
 -5.3618E-14  2.0824E-13 -6.5018E-14  1.2703E-13  6.6247E-15  3.5004E-12
  1.2229E-13  1.3020E-14 -3.6252E-15  6.6247E-15  2.2032E-13  4.8171E-13
 -3.7198E-12  1.4492E-11 -9.0284E-13  3.5004E-12  4.8171E-13  2.4363E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.021380 -117.840971    0.662860    0.118166   -0.744173  2456393.106028
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:            6.86447 +/-     1.748
Argument of Peri:       33.22817 +/-     1.817
Long of Asc Node:      201.64225 +/-     0.002
Inclination:            13.74162 +/-     0.000
Eccentricity:         0.01886559 +/-    0.0002
Semi-Major Axis:     40.45326787 +/-    0.0051
Time of Perihelion: 2454598.5204 +/-     456.4
Perihelion:          39.69009311 +/-    0.0088
Aphelion:            41.21644263 +/-    0.0089
Period (y)              257.2993 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -18.90145214 +/-    0.0003
Ecliptic Y          -34.36845912 +/-    0.0006
Ecliptic Z            6.10737433 +/-    0.0001
Ecliptic XDOT         0.00240820 +/-    0.0000
Ecliptic YDOT        -0.00124295 +/-    0.0000
Ecliptic ZDOT         0.00049972 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.69579193 +/-    0.0006
Geocenter to KBO     38.94842478 +/-    0.0007
# Hcoef:  8.52

The following table shows the complete astrometric record for 13JS65. 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 (13JS65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  10.60525  16 07 34.601  -11 44 34.02  24.5r 13JS65    568  C~1XRg      
2013 04  19.47613  16 07 01.988  -11 41 18.06  24.3r 13JS65    568  C~1XRg      
2013 04  19.52900  16 07 01.780  -11 41 16.96  24.4r 13JS65    568  C~1XRg      
2013 05  08.46327  16 05 37.646  -11 34 32.15  24.1r 13JS65    568  C~1XRg      
2013 05  08.50727  16 05 37.429  -11 34 31.13  23.9r 13JS65    568  C~1XRg      
2013 05  08.55109  16 05 37.220  -11 34 30.28  24.3r 13JS65    568  C~1XRg      
2013 05  09.55840  16 05 32.338  -11 34 10.02  24.7r 13JS65    568  C~1XRg      
2013 05  10.56374  16 05 27.445  -11 33 49.82  24.2r 13JS65    568  C~1XRg      
2013 06  06.34733  16 03 13.812  -11 26 11.79        13JS65    568  C~1XRg      
2013 06  06.43285  16 03 13.392  -11 26 10.67        13JS65    568  C~1XRg      
2013 06  13.45880  16 02 39.725  -11 24 43.12  24.1r 13JS65    568  C~1XRg      
2013 07  02.38481  16 01 19.512  -11 22 10.98  24.3r 13JS65    568  C~1XRg      
2013 07  04.37595  16 01 12.232  -11 22 02.69  24.3r 13JS65    568  C~1XRg      
2013 08  02.30664  16 00 01.056  -11 22 49.20        13JS65    568  C~1XRg      
2013 08  05.29659  15 59 57.880  -11 23 11.59  24.1r 13JS65    568  C~1XRg      
2014 03  06.61642  16 14 38.150  -11 56 53.83        13JS65    568  C~1XRg      
2014 03  07.59105  16 14 38.086  -11 56 37.39  24.4r 13JS65    568  C~1XRg      
2014 05  01.42971  16 12 16.428  -11 37 46.97  24.5r 13JS65    568  C~1XRg      
2014 05  01.48091  16 12 16.202  -11 37 45.99  24.6r 13JS65    568  C~1XRg      
2014 05  01.54140  16 12 15.913  -11 37 44.72  24.1r 13JS65    568  C~1XRg      
2014 05  04.52933  16 12 02.243  -11 36 42.76  24.2r 13JS65    568  C~1XRg      
2015 03  22.59933  16 20 26.168  -11 52 06.94  24.3r 13JS65    568  C~2LSX      
2016 05  29.33946  16 22 08.641  -11 29 26.77  25.2R 13JS65    G37              
2016 05  29.41787  16 22 08.259  -11 29 25.83        13JS65    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    -0.08       0.00     0.03
  2   0.0243   -507.51     0.09     101.39     0.06
  3   0.0244   -510.72     0.20     101.89     0.01
  4   0.0763  -1801.39    -0.05     263.39    -0.03
  5   0.0764  -1804.71    -0.08     263.78     0.09
  6   0.0765  -1807.89     0.01     264.03     0.07
  7   0.0793  -1882.19    -0.08     270.18    -0.08
  8   0.0820  -1956.64    -0.12     276.23    -0.06
  9   0.1554  -3972.76    -0.11     347.55     0.09
 10   0.1556  -3979.04    -0.02     347.45     0.06
 11   0.1748  -4481.84    -0.23     337.46     0.01
 12   0.2266  -5669.12     0.17     257.23     0.08
 13   0.2321  -5775.81     0.11     244.47    -0.09
 14   0.3113  -6794.09     0.03      -6.10    -0.13
 15   0.3195  -6835.53     0.13     -37.24     0.00
 16   0.9035   6248.66     0.12     433.87     0.20
 17   0.9062   6244.72     0.01     449.86     0.00
 18   1.0563   3990.33    -0.10    1177.00    -0.06
 19   1.0565   3986.89     0.05    1177.35    -0.12
 20   1.0566   3982.48    -0.10    1177.81    -0.14
 21   1.0648   3773.54     0.00    1201.37    -0.03
 22   1.9466  11229.67     0.12    1642.20    -0.11
 23   3.1341  12473.85    -0.21    3251.65     0.14
 24   3.1343  12468.13     0.13    3251.57    -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.

13JS65    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.348    40.365    40.331
ecceobj         0.017     0.017     0.016
incobj         13.771    13.772    13.771
qmin           39.277    39.246    39.288
qmax           42.162    42.117    42.083
amean          40.627    40.644    40.609
amin           40.329    40.344    40.313
amax           40.924    40.949    40.909
emean           0.014     0.015     0.013
emin            0.000     0.000     0.000
emax            0.030     0.030     0.029
imean          14.960    14.954    14.965
imin           13.883    13.886    13.888
imax           15.872    15.854    15.884
excite_mean     0.259     0.258     0.259
fracstop        1.000     1.000     1.000
cjmean          2.984     2.985     2.984

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       175.2     174.1     175.6
kozaiamp        180.0     179.9     180.0