Orbit Fit and Astrometric record for 13JC65

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: 13JC65    
# Created Thu Dec 14 02:37:55 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   3.07y
# First observation: 2013/04/09
#  Last observation: 2016/05/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000231   0.046966  -0.000003  -0.011995   0.035991   0.000000
# Chi-squared of fit:     8.41 DOF:   60 RMS:  0.09
# Min/Max residuals:    -0.19    0.22
# Exact a, adot, b, bdot, g, gdot:
  2.056801E-05  4.707610E-02 -5.597689E-06 -1.205649E-02  3.644529E-02  5.079155E-03
# Covariance matrix:
  1.6885E-13 -1.3651E-13 -7.9953E-15  1.9842E-14  8.3580E-14 -6.4193E-13
 -1.3651E-13  3.4340E-13  2.5680E-14 -7.6471E-14  8.6067E-14  2.4947E-12
 -7.9953E-15  2.5680E-14  1.0364E-13 -7.0898E-14  5.6622E-15  2.3510E-13
  1.9842E-14 -7.6471E-14 -7.0898E-14  9.3129E-14 -2.5643E-14 -7.0224E-13
  8.3580E-14  8.6067E-14  5.6622E-15 -2.5643E-14  2.6340E-13  8.4848E-13
 -6.4193E-13  2.4947E-12  2.3510E-13 -7.0224E-13  8.4848E-13  2.2912E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.684252 -121.802279    0.623371    0.118706   -0.777051  2456392.048058
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:           11.44201 +/-     0.011
Argument of Peri:      127.08174 +/-     0.022
Long of Asc Node:       87.13191 +/-     0.001
Inclination:            16.43148 +/-     0.000
Eccentricity:         0.29284782 +/-    0.0001
Semi-Major Axis:     39.26873994 +/-    0.0038
Time of Perihelion: 2453533.7725 +/-       2.7
Perihelion:          27.76897522 +/-    0.0041
Aphelion:            50.76850466 +/-    0.0058
Period (y)              246.0813 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.23686562 +/-    0.0002
Ecliptic Y          -23.38908957 +/-    0.0003
Ecliptic Z            4.14278265 +/-    0.0001
Ecliptic XDOT         0.00272840 +/-    0.0000
Ecliptic YDOT        -0.00230010 +/-    0.0000
Ecliptic ZDOT        -0.00083757 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   28.22010335 +/-    0.0003
Geocenter to KBO     27.43838708 +/-    0.0004
# Hcoef:  9.39

The following table shows the complete astrometric record for 13JC65. 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 (13JC65) followed by the observatory code and reference code for the source of the astrometry.

2013 04  09.54728  15 51 38.985  -11 16 58.56  23.8r 13JC65    568  C~1XRe      
2013 04  10.51637  15 51 34.309  -11 16 38.13  23.9r 13JC65    568  C~1XRe      
2013 04  10.55690  15 51 34.105  -11 16 37.23  23.7r 13JC65    568  C~1XRe      
2013 04  19.56975  15 50 46.501  -11 13 26.15  23.7r 13JC65    568  C~1XRe      
2013 05  07.44791  15 48 55.282  -11 07 23.67  23.6r 13JC65    568  C~1XRe      
2013 05  07.49211  15 48 54.983  -11 07 22.86  23.7r 13JC65    568  C~1XRe      
2013 05  07.53231  15 48 54.712  -11 07 22.03        13JC65    568  C~1XRe      
2013 05  09.49257  15 48 41.600  -11 06 45.58  23.8r 13JC65    568  C~1XRe      
2013 05  10.49969  15 48 34.814  -11 06 27.26  23.6r 13JC65    568  C~1XRe      
2013 06  02.40261  15 45 59.155  -11 00 53.62  24.1r 13JC65    568  C~1XRe      
2013 07  02.32030  15 43 07.191  -10 59 20.53  24.1r 13JC65    568  C~1XRe      
2013 07  03.35826  15 43 02.511  -10 59 25.61        13JC65    568  C~1XRe      
2014 03  06.59120  16 03 10.808  -12 39 49.95  24.1r 13JC65    568  C~1XRe      
2014 03  07.56585  16 03 10.588  -12 39 39.24  23.9r 13JC65    568  C~1XRf      
2014 04  05.59040  16 02 04.807  -12 32 16.37  24.2r 13JC65    568  C~1XRf      
2014 04  30.44035  15 59 53.833  -12 24 31.01  24.1r 13JC65    568  C~1XRf      
2014 04  30.49188  15 59 53.513  -12 24 29.80  23.8r 13JC65    568  C~1XRf      
2014 04  30.54366  15 59 53.183  -12 24 29.23  23.5r 13JC65    568  C~1XRf      
2014 04  30.54871  15 59 53.149  -12 24 28.72  23.9r 13JC65    568  C~1XRf      
2014 05  05.47492  15 59 21.750  -12 23 00.06  23.4r 13JC65    568  C~1XRf      
2014 05  05.47955  15 59 21.730  -12 23 00.13  23.5r 13JC65    568  C~1XRf      
2014 05  06.41163  15 59 15.653  -12 22 43.64  23.8r 13JC65    568  C~1XRf      
2014 05  06.47850  15 59 15.212  -12 22 42.53  23.4r 13JC65    568  C~1XRf      
2014 05  22.47401  15 57 27.011  -12 18 28.96  23.7r 13JC65    568  C~1XRf      
2014 05  22.49456  15 57 26.878  -12 18 28.45  23.5r 13JC65    568  C~1XRf      
2014 05  24.45091  15 57 13.417  -12 18 02.08  24.1r 13JC65    568  C~1XRf      
2014 06  02.44941  15 56 11.990  -12 16 16.47  23.7r 13JC65    568  C~1XRf      
2014 07  01.37151  15 53 18.939  -12 14 20.88  23.6r 13JC65    568  C~1XRf      
2014 07  18.35282  15 52 10.228  -12 16 22.30  24.1r 13JC65    568  C~1XRf      
2015 03  22.57876  16 12 53.448  -13 47 19.69  23.6r 13JC65    568  C~1XRf      
2015 04  18.50253  16 11 14.297  -13 40 28.78  23.5r 13JC65    568  C~2LSW      
2016 05  06.53851  16 19 36.454  -14 45 48.14  23.6r 13JC65    568  C~2LSW      
2016 05  06.60444  16 19 36.028  -14 45 47.28  23.5r 13JC65    568  C~2LSW      

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    -0.03       0.00     0.08
  2   0.0027    -71.56    -0.11       5.25     0.03
  3   0.0028    -74.69    -0.14       5.49     0.07
  4   0.0274   -799.70     0.04      42.16    -0.09
  5   0.0764  -2476.14    -0.02      43.85     0.02
  6   0.0765  -2480.61    -0.00      43.69     0.00
  7   0.0766  -2484.68     0.01      43.64     0.07
  8   0.0820  -2681.02     0.00      37.52     0.03
  9   0.0847  -2782.52    -0.03      33.81    -0.05
 10   0.1474  -5092.63     0.19    -138.65    -0.13
 11   0.2294  -7585.71     0.04    -604.16    -0.13
 12   0.2322  -7651.90    -0.05    -624.35    -0.05
 13   0.9063  10976.39     0.15   -2745.47    -0.07
 14   0.9090  10971.04     0.03   -2735.62    -0.14
 15   0.9885   9935.16    -0.02   -2497.89     0.11
 16   1.0565   7958.35    -0.02   -2436.19    -0.10
 17   1.0567   7953.50     0.04   -2435.97     0.19
 18   1.0568   7948.65     0.11   -2436.41    -0.19
 19   1.0568   7948.05    -0.00   -2436.02     0.22
 20   1.0703   7478.97    -0.11   -2444.29     0.05
 21   1.0703   7478.70     0.08   -2444.42    -0.06
 22   1.0729   7388.06    -0.12   -2446.71    -0.03
 23   1.0730   7381.50    -0.04   -2446.96    -0.07
 24   1.1168   5776.18    -0.02   -2528.30    -0.07
 25   1.1169   5774.17     0.09   -2528.21     0.18
 26   1.1223   5575.57     0.12   -2543.59     0.06
 27   1.1469   4672.49     0.03   -2628.69    -0.06
 28   1.2261   2167.72    -0.03   -3050.92     0.20
 29   1.2726   1209.29    -0.10   -3383.93     0.00
 30   1.9494  20176.37    -0.00   -5036.63     0.03
 31   2.0231  18665.39    -0.08   -4912.81    -0.01
 32   3.0746  26685.97    -0.02   -7393.43    -0.02
 33   3.0748  26679.63     0.01   -7393.73    -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.

13JC65    quality flag:3

Type:           3:2E      3:2E      3:2E
Type:          6:4II     6:4II     6:4II

axisobj        39.106    39.119    39.092
ecceobj         0.290     0.290     0.289
incobj         16.421    16.421    16.421
qmin           27.220    27.212    27.197
qmax           52.084    52.232    52.256
amean          39.454    39.454    39.454
amin           39.089    39.108    39.091
amax           39.897    39.912    39.930
emean           0.255     0.255     0.255
emin            0.187     0.187     0.186
emax            0.309     0.310     0.310
imean          17.647    17.662    17.618
imin           14.907    14.905    14.920
imax           20.542    20.540    20.527
excite_mean     0.399     0.399     0.399
fracstop        1.000     1.000     1.000
cjmean          2.870     2.870     2.870

libcent 0       180.8     180.5     180.8
libamp  0        33.4      31.0      38.1
libcent 1       192.7     192.0     191.9
libamp  1       146.0     140.9     157.4
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        97.8      97.7      98.0
kozaiamp         52.8      52.6      53.1