Orbit Fit and Astrometric record for 13CJ118

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: 13CJ118   
# Created Thu Dec  9 02:11:28 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     30 observations of     30
# Arc:   2.37y
# First observation: 2011/12/16
#  Last observation: 2014/04/28
# Chi-squared of fit:    39.22 DOF:     54 RMS:  0.20
# Min/Max residuals:    -0.58    0.47
# Exact a, adot, b, bdot, g, gdot:
  5.195737E-05  7.485352E-01 -5.353293E-06 -8.059915E-02  2.269593E-01 -3.199449E-02
# Covariance matrix:
  6.1802E-09  3.3948E-07 -1.7559E-11 -6.6981E-07 -2.4863E-08  3.5264E-06
  3.3948E-07  6.1403E-05  3.8235E-09 -1.1519E-04 -1.3800E-06  6.0635E-04
 -1.7559E-11  3.8235E-09  1.0798E-12 -7.1817E-09  6.9042E-11  3.7447E-08
 -6.6981E-07 -1.1519E-04 -7.1817E-09  2.2137E-04  2.7211E-06 -1.1593E-03
 -2.4863E-08 -1.3800E-06  6.9042E-11  2.7211E-06  1.0004E-07 -1.4326E-05
  3.5264E-06  6.0635E-04  3.7447E-08 -1.1593E-03 -1.4326E-05  6.1023E-03
#      lat0       lon0       xBary       yBary       zBary        JD0
   10.469569  105.834330    0.362043    0.166017   -0.898271  2455912.027616
# Heliocentric elements and errors
Epoch:              2455912.5000  =  2011/12/17
Mean Anomaly:          354.50888 +/-     0.001
Argument of Peri:      141.45214 +/-     0.008
Long of Asc Node:      338.51998 +/-     0.008
Inclination:            10.32579 +/-     0.000
Eccentricity:         0.49515732 +/-    0.0000
Semi-Major Axis:     10.35627008 +/-    0.0000
Time of Perihelion: 2456098.1787 +/-       0.0
Perihelion:           5.22828715 +/-    0.0002
Aphelion:            15.48425301 +/-    0.0002
Period (y)               33.3283 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -1.08007135 +/-    0.0000
Ecliptic Y            5.14712363 +/-    0.0000
Ecliptic Z            0.80059328 +/-    0.0000
Ecliptic XDOT        -0.00863586 +/-    0.0000
Ecliptic YDOT        -0.00265421 +/-    0.0000
Ecliptic ZDOT        -0.00102615 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO    5.31983458 +/-    0.0000
Geocenter to KBO      4.40612222 +/-    0.0000
# Hcoef: 14.85

The following table shows the complete astrometric record for 13CJ118. 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 (13CJ118) followed by the observatory code and reference code for the source of the astrometry.

2011 12  16.52685  07 14 32.293  +32 53 24.75  21.6G 13CJ118   F51  C~36ne      
2011 12  16.55238  07 14 31.579  +32 53 25.87  22.8G 13CJ118   F51  C~36ne      
2011 12  16.56481  07 14 31.244  +32 53 26.52  22.4G 13CJ118   F51  C~36ne      
2013 01  21.53108  09 58 21.406  +16 15 32.24  22.5G 13CJ118   F51  C~36ne      
2013 01  21.54331  09 58 21.117  +16 15 33.56  23.1G 13CJ118   F51  C~36ne      
2013 02  09.37671  09 50 10.778  +16 37 30.98  21.6w 13CJ118   F51  C~0p7Z      
2013 02  09.39165  09 50 10.348  +16 37 32.09  21.6w 13CJ118   F51  C~0p7Z      
2013 02  09.40669  09 50 09.915  +16 37 33.08  21.7w 13CJ118   F51  C~0p7Z      
2013 02  09.42180  09 50 09.485  +16 37 34.20  21.6w 13CJ118   F51  C~0p7Z      
2013 02  11.96539  09 48 57.83   +16 40 27.8   21.0R 13CJ118   J04  C~0p7Z      
2013 02  11.97090  09 48 57.66   +16 40 28.2   21.1R 13CJ118   J04  C~0p7Z      
2013 02  11.97641  09 48 57.50   +16 40 28.7   21.1R 13CJ118   J04  C~0p7Z      
2013 02  12.97949  09 48 29.18   +16 41 35.4   20.9R 13CJ118   J04  C~0p7Z      
2013 02  12.98389  09 48 29.06   +16 41 36.3   20.9R 13CJ118   J04  C~0p7Z      
2013 02  12.98828  09 48 28.91   +16 41 36.4   20.8R 13CJ118   J04  C~0p7Z      
2013 02  13.274629 09 48 20.871  +16 41 55.30  21.3R 13CJ118   568  C~0p7Z      
2013 02  13.275909 09 48 20.835  +16 41 55.41  21.6R 13CJ118   568  C~0p7Z      
2013 02  13.277159 09 48 20.801  +16 41 55.59  21.3R 13CJ118   568  C~0p7Z      
2013 02  14.96884  09 47 32.98   +16 43 44.8   21.3R 13CJ118   J04  C~0p7Z      
2013 02  14.97325  09 47 32.85   +16 43 45.4   21.2R 13CJ118   J04  C~0p7Z      
2013 02  14.97765  09 47 32.74   +16 43 46.0   21.6R 13CJ118   J04  C~0p7Z      
2014 02  28.45783  11 49 24.566  -02 48 30.38  22.3G 13CJ118   F51  C~36ne      
2014 02  28.46989  11 49 24.295  -02 48 29.18  23.0G 13CJ118   F51  C~36ne      
2014 02  28.48197  11 49 24.003  -02 48 28.57  22.8G 13CJ118   F51  C~36ne      
2014 02  28.49406  11 49 23.710  -02 48 27.34  22.8G 13CJ118   F51  C~36ne      
2014 03  24.41500  11 39 39.607  -02 10 01.75  22.5G 13CJ118   F51  C~36ne      
2014 03  24.42728  11 39 39.326  -02 10 00.09  22.5G 13CJ118   F51  C~36ne      
2014 04  28.31429  11 28 47.841  -01 19 08.67  22.8G 13CJ118   F51  C~36ne      
2014 04  28.33886  11 28 47.523  -01 19 07.20  22.7G 13CJ118   F51  C~36ne      
2014 04  28.35115  11 28 47.372  -01 19 06.83  22.1G 13CJ118   F51  C~36ne      

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     0.04       0.00    -0.06
     2   0.0001      0.00    -0.16       0.00    -0.24
     3   0.0001      0.00    -0.07       0.00    -0.22
     4   1.1006      0.00    -0.19       0.00    -0.33
     5   1.1007      0.00    -0.20       0.00     0.21
     6   1.1522      0.00    -0.04       0.00     0.06
     7   1.1523      0.00    -0.02       0.00     0.11
     8   1.1523      0.00    -0.00       0.00     0.04
     9   1.1523      0.00     0.10       0.00     0.09
    10   1.1593      0.00     0.22       0.00    -0.09
    11   1.1593      0.00     0.06       0.00    -0.07
    12   1.1593      0.00     0.05       0.00     0.05
    13   1.1621      0.00     0.36       0.00    -0.24
    14   1.1621      0.00     0.47       0.00     0.36
    15   1.1621      0.00     0.12       0.00     0.17
    16   1.1629      0.00    -0.05       0.00     0.08
    17   1.1629      0.00    -0.04       0.00     0.11
    18   1.1629      0.00    -0.01       0.00     0.20
    19   1.1675      0.00    -0.17       0.00    -0.28
    20   1.1675      0.00    -0.21       0.00     0.03
    21   1.1676      0.00     0.04       0.00     0.34
    22   2.2038      0.00    -0.20       0.00    -0.17
    23   2.2038      0.00     0.03       0.00     0.09
    24   2.2038      0.00    -0.05       0.00    -0.23
    25   2.2039      0.00    -0.13       0.00     0.06
    26   2.2694      0.00    -0.07       0.00    -0.58
    27   2.2694      0.00     0.29       0.00    -0.22
    28   2.3649      0.00     0.27       0.00     0.15
    29   2.3650      0.00    -0.23       0.00     0.32
    30   2.3650      0.00    -0.36       0.00     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.

13CJ118    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        10.328    10.328    10.328
ecceobj         0.492     0.492     0.492
incobj         10.315    10.315    10.315
qmin            5.241     5.234     5.243
qmax           15.413    15.413    15.413
amean           9.626     9.736     9.746
amin            8.925     9.144     9.163
amax           10.328    10.328    10.328
emean           0.453     0.460     0.457
emin            0.413     0.428     0.422
emax            0.492     0.492     0.492
imean          11.622    11.603    11.693
imin           11.375    11.375    11.375
imax           11.870    11.832    12.011
excite_mean     0.496     0.502     0.501
fracstop        0.000     0.000     0.000
cjmean          4.122     4.084     4.082

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       147.5     147.7     152.3
kozaiamp          6.2       6.4      11.0