Orbit Fit and Astrometric record for 13JC64

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: 13JC64    
# Created Thu Dec 14 02:37:55 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   1.14y
# First observation: 2013/04/10
#  Last observation: 2014/06/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.001327   0.129317  -0.000017  -0.079043   0.074933   0.000000
# Chi-squared of fit:     5.11 DOF:   24 RMS:  0.10
# Min/Max residuals:    -0.25    0.27
# Exact a, adot, b, bdot, g, gdot:
  2.549447E-05  1.303585E-01 -1.677563E-05 -7.981962E-02  7.688371E-02  1.537786E-03
# Covariance matrix:
  3.3079E-13  9.7277E-13  6.4001E-14 -9.0098E-13  6.2973E-13  1.0456E-11
  9.7277E-13  3.0355E-11  1.7011E-12 -2.2129E-11  9.3377E-12  2.5407E-10
  6.4001E-14  1.7011E-12  2.4906E-13 -1.4720E-12  5.2967E-13  1.4585E-11
 -9.0098E-13 -2.2129E-11 -1.4720E-12  1.7283E-11 -7.0239E-12 -1.8993E-10
  6.2973E-13  9.3377E-12  5.2967E-13 -7.0239E-12  3.4507E-12  8.0861E-11
  1.0456E-11  2.5407E-10  1.4585E-11 -1.8993E-10  8.0861E-11  2.1810E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.518197 -118.769601    0.650721    0.113183   -0.755573  2456393.093828
# Heliocentric elements and errors
Epoch:              2456390.5000  =  2013/04/08
Mean Anomaly:          357.74926 +/-     0.027
Argument of Peri:      170.04154 +/-     0.064
Long of Asc Node:       71.53022 +/-     0.000
Inclination:            32.05264 +/-     0.000
Eccentricity:         0.37778802 +/-    0.0000
Semi-Major Axis:     22.11353446 +/-    0.0019
Time of Perihelion: 2456627.9694 +/-       2.8
Perihelion:          13.75930616 +/-    0.0015
Aphelion:            30.46776277 +/-    0.0028
Period (y)              103.9909 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -7.12806538 +/-    0.0002
Ecliptic Y          -11.62953566 +/-    0.0003
Ecliptic Z            1.92641512 +/-    0.0000
Ecliptic XDOT         0.00383409 +/-    0.0000
Ecliptic YDOT        -0.00265038 +/-    0.0000
Ecliptic ZDOT        -0.00280279 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.77557589 +/-    0.0002
Geocenter to KBO     13.00665597 +/-    0.0003
# Hcoef: 12.19

The following table shows the complete astrometric record for 13JC64. 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 (13JC64) followed by the observatory code and reference code for the source of the astrometry.

2013 04  10.59305  16 03 29.929  -12 03 34.64  23.6r 13JC64    568  C~1WkX      
2013 04  19.46408  16 02 01.991  -12 02 25.77  23.4r 13JC64    568  C~1WkX      
2013 04  19.51699  16 02 01.402  -12 02 25.32  23.4r 13JC64    568  C~1WkX      
2013 05  08.43031  15 58 09.672  -12 00 29.86  23.4r 13JC64    568  C~1WkX      
2013 05  08.47938  15 58 09.016  -12 00 29.69  23.4r 13JC64    568  C~1WkX      
2013 05  08.52324  15 58 08.412  -12 00 29.58  23.4r 13JC64    568  C~1WkX      
2013 05  09.53023  15 57 54.884  -12 00 26.29  23.4r 13JC64    568  C~1WkX      
2013 05  10.53581  15 57 41.270  -12 00 23.86  23.2r 13JC64    568  C~1WkX      
2013 06  04.38901  15 51 58.742  -12 02 20.91  23.6r 13JC64    568  C~1WkX      
2013 06  06.39243  15 51 32.054  -12 02 49.37  23.3r 13JC64    568  C~1WkX      
2013 07  02.32839  15 46 35.267  -12 14 30.22  23.7r 13JC64    568  C~1WkX      
2013 07  03.36611  15 46 25.900  -12 15 11.98  23.9r 13JC64    568  C~1WkX      
2014 03  06.63658  16 31 57.960  -17 40 23.01  23.3r 13JC64    568  C~1WkX      
2014 03  07.61121  16 32 00.438  -17 40 52.85  23.4r 13JC64    568  C~1WkX      
2014 06  02.46113  16 19 42.047  -18 03 59.08  23.3r 13JC64    568  C~1WkX      

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     0.27       0.00     0.07
  2   0.0243  -1278.42    -0.13    -185.86     0.01
  3   0.0244  -1286.98    -0.18    -187.12     0.04
  4   0.0762  -4642.54    -0.07    -749.97    -0.02
  5   0.0763  -4652.01     0.14    -751.73     0.03
  6   0.0765  -4660.72     0.08    -753.40    -0.03
  7   0.0792  -4855.93     0.12    -790.02     0.11
  8   0.0820  -5052.21    -0.16    -827.78    -0.25
  9   0.1500  -9955.42    -0.06   -1966.46    -0.11
 10   0.1555 -10333.60    -0.06   -2075.29     0.00
 11   0.2265 -14459.72    -0.02   -3674.00     0.08
 12   0.2294 -14585.81     0.07   -3744.08     0.07
 13   0.9036  28227.15    -0.05  -15515.05     0.01
 14   0.9063  28267.97     0.02  -15539.22     0.03
 15   1.1441  17969.30     0.03  -18702.05    -0.04

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.

13JC64    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        22.107    22.174    22.041
ecceobj         0.378     0.379     0.376
incobj         32.007    32.006    32.008
qmin           13.727    13.667    13.544
qmax           31.091    31.167    30.633
amean          22.268    22.250    22.032
amin           22.107    22.157    21.763
amax           22.526    22.417    22.301
emean           0.375     0.383     0.373
emin            0.368     0.379     0.365
emax            0.387     0.390     0.381
imean          30.809    30.707    30.749
imin           30.705    30.681    30.656
imax           30.942    30.744    30.845
excite_mean     0.635     0.638     0.633
fracstop        0.001     0.000     0.002
cjmean          2.715     2.713     2.724

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       173.6     171.2     178.3
kozaiamp          3.3       1.3       8.4