Orbit Fit and Astrometric record for 14DC143

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: 14DC143   
# Created Tue Oct 23 01:09:24 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   80 observations of   80
# Arc:  10.01y
# First observation: 2008/02/09
#  Last observation: 2018/02/12
# Chi-squared of fit:    45.11 DOF:  154 RMS:  0.13
# Min/Max residuals:    -0.35    0.54
# Exact a, adot, b, bdot, g, gdot:
  2.517104E-05  1.265653E-01  1.034422E-05  4.643025E-02  7.342269E-02 -2.373277E-02
# Covariance matrix:
  4.6709E-13  8.6223E-15  1.8796E-14 -1.1512E-13  8.2983E-12 -2.4292E-13
  8.6223E-15  6.9506E-12  1.9198E-14  2.1150E-12  6.5682E-12 -3.8954E-12
  1.8796E-14  1.9198E-14  3.7089E-13 -1.0609E-13  1.5633E-12 -4.7038E-14
 -1.1512E-13  2.1150E-12 -1.0609E-13  3.6842E-12 -1.0197E-11 -1.5610E-12
  8.2983E-12  6.5682E-12  1.5633E-12 -1.0197E-11  6.9070E-10 -1.9187E-11
 -2.4292E-13 -3.8954E-12 -4.7038E-14 -1.5610E-12 -1.9187E-11  3.6287E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.498510  119.921472   -0.332416    0.121744   -0.924396  2454505.764014
# Heliocentric elements and errors
Epoch:              2454506.5000  =  2008/02/10
Mean Anomaly:          340.33660 +/-     0.001
Argument of Peri:       58.39926 +/-     0.000
Long of Asc Node:      102.55056 +/-     0.000
Inclination:            21.00903 +/-     0.000
Eccentricity:         0.31601003 +/-    0.0000
Semi-Major Axis:     20.15555693 +/-    0.0000
Time of Perihelion: 2456311.7888 +/-       0.1
Perihelion:          13.78619869 +/-    0.0000
Aphelion:            26.52491516 +/-    0.0000
Period (y)               90.4900 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -7.48899551 +/-    0.0000
Ecliptic Y           12.34056913 +/-    0.0000
Ecliptic Z            1.77752263 +/-    0.0000
Ecliptic XDOT        -0.00353361 +/-    0.0000
Ecliptic YDOT        -0.00331069 +/-    0.0000
Ecliptic ZDOT         0.00160092 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   14.54428019 +/-    0.0000
Geocenter to KBO     13.61988315 +/-    0.0000
# Hcoef: 10.30

The following table shows the complete astrometric record for 14DC143. 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 (14DC143) followed by the observatory code and reference code for the source of the astrometry.

2008 02  09.26326  08 15 31.53   +27 29 11.7   22.1V 14DC143   G96  C~1vXG      
2008 02  09.26988  08 15 31.39   +27 29 11.9   22.8V 14DC143   G96  C~1vXG      
2008 02  09.27662  08 15 31.32   +27 29 12.6   21.2V 14DC143   G96  C~1vXG      
2008 02  09.28330  08 15 31.24   +27 29 13.0   21.6V 14DC143   G96  C~1vXG      
2012 01  22.45138  10 47 40.888  +26 08 07.72  21.6w 14DC143   F51  C~1vXG      
2012 01  22.46554  10 47 40.754  +26 08 09.61  21.6w 14DC143   F51  C~1vXG      
2012 01  22.47961  10 47 40.632  +26 08 11.21  21.7w 14DC143   F51  C~1vXG      
2012 01  22.49362  10 47 40.501  +26 08 12.80  21.7w 14DC143   F51  C~1vXG      
2012 03  14.30753  10 37 23.462  +27 31 30.58  21.5r 14DC143   F51  C~1vXG      
2012 03  14.31873  10 37 23.317  +27 31 31.12  21.7r 14DC143   F51  C~1vXG      
2012 03  14.33023  10 37 23.178  +27 31 31.94  21.8g 14DC143   F51  C~1vXG      
2012 03  14.34200  10 37 23.024  +27 31 32.27  22.1g 14DC143   F51  C~1vXG      
2012 12  29.55014  11 25 42.882  +23 37 35.62  21.9G 14DC143   F51  C~2kPp      
2012 12  29.56064  11 25 42.882  +23 37 36.74  22.1G 14DC143   F51  C~2kPp      
2013 03  04.56950  11 17 22.870  +25 38 27.13  21.1G 14DC143   F51  C~2kPp      
2014 01  24.65398  11 59 45.016  +22 06 52.46  22.2G 14DC143   F51  C~2kPp      
2014 02  20.54253  11 56 18.807  +23 00 12.41  21.4i 14DC143   F51  C~1vXG      
2014 02  20.55601  11 56 18.661  +23 00 13.65  21.2i 14DC143   F51  C~1vXG      
2014 02  20.56959  11 56 18.531  +23 00 15.51  21.3i 14DC143   F51  C~1vXG      
2014 02  20.58325  11 56 18.372  +23 00 16.88  21.2i 14DC143   F51  C~1vXG      
2014 02  24.39927  11 55 37.603  +23 07 28.97  21.4w 14DC143   F51  C~1vXG      
2014 02  24.41181  11 55 37.466  +23 07 30.48  21.4w 14DC143   F51  C~1vXG      
2014 02  24.42433  11 55 37.321  +23 07 31.83  21.6w 14DC143   F51  C~1vXG      
2014 02  24.43690  11 55 37.187  +23 07 33.22  21.6w 14DC143   F51  C~1vXG      
2014 04  28.36701  11 43 50.207  +24 05 19.69  21.6w 14DC143   F51  C~1vXG      
2014 04  28.37978  11 43 50.114  +24 05 19.65  21.7w 14DC143   F51  C~1vXG      
2014 04  28.39260  11 43 50.023  +24 05 19.36  22.0w 14DC143   F51  C~1vXG      
2014 06  09.30032  11 42 13.573  +23 22 12.42  22.0G 14DC143   F51  C~2kPp      
2014 12  25.58548  12 32 10.056  +18 40 06.51  21.7G 14DC143   F51  C~2kPp      
2014 12  27.59320  12 32 22.849  +18 42 15.67  21.7G 14DC143   F51  C~2kPp      
2015 01  15.54479  12 33 27.109  +19 08 23.69  21.8r 14DC143   F51  C~1vXG      
2015 01  15.55600  12 33 27.099  +19 08 24.79  21.5r 14DC143   F51  C~1vXG      
2015 01  15.57852  12 33 27.113  +19 08 27.20  21.6r 14DC143   F51  C~1vXG      
2015 03  15.52149  12 26 53.141  +20 56 55.40  21.6r 14DC143   F51  C~1vXG      
2015 03  15.53307  12 26 52.992  +20 56 56.52  21.5r 14DC143   F51  C~1vXG      
2015 03  15.54468  12 26 52.859  +20 56 57.59  21.6r 14DC143   F51  C~1vXG      
2015 03  15.55631  12 26 52.715  +20 56 58.79  21.5r 14DC143   F51  C~1vXG      
2015 04  13.29306  12 21 05.877  +21 29 06.84  21.6w 14DC143   F51  C~1vXG      
2015 04  13.30486  12 21 05.748  +21 29 07.30  21.6w 14DC143   F51  C~1vXG      
2015 04  13.31658  12 21 05.603  +21 29 07.83  21.6w 14DC143   F51  C~1vXG      
2015 04  13.32826  12 21 05.469  +21 29 08.20  21.5w 14DC143   F51  C~1vXG      
2015 12  23.62593  13 02 15.033  +15 47 42.94  21.8G 14DC143   F51  C~2kPp      
2016 02  04.49164  13 04 37.363  +16 43 34.48  22.0G 14DC143   F51  C~2kPp      
2016 02  04.50545  13 04 37.317  +16 43 36.15  21.8G 14DC143   F51  C~2kPp      
2016 02  04.51924  13 04 37.270  +16 43 37.51  21.5G 14DC143   F51  C~2kPp      
2016 02  04.53311  13 04 37.242  +16 43 38.85  22.0G 14DC143   F51  C~2kPp      
2016 02  21.50724  13 03 14.511  +17 15 00.78  21.9G 14DC143   F51  C~2kPp      
2016 03  03.43009  13 01 46.277  +17 35 19.45  21.6G 14DC143   F51  C~2kPp      
2016 03  03.44454  13 01 46.137  +17 35 20.98  21.6G 14DC143   F51  C~2kPp      
2016 03  12.57538  13 00 15.672  +17 51 26.17  21.8G 14DC143   F51  C~2kPp      
2016 03  12.58785  13 00 15.544  +17 51 27.42  21.6G 14DC143   F51  C~2kPq      
2016 03  12.60026  13 00 15.420  +17 51 28.75  21.5G 14DC143   F51  C~2kPq      
2016 03  12.61268  13 00 15.271  +17 51 29.88  21.7G 14DC143   F51  C~2kPq      
2016 03  13.58277  13 00 04.957  +17 53 07.79  21.5G 14DC143   F51  C~2kPq      
2016 03  13.59540  13 00 04.809  +17 53 09.13  21.6G 14DC143   F51  C~2kPq      
2016 03  13.60725  13 00 04.683  +17 53 10.30  21.7G 14DC143   F51  C~2kPq      
2016 03  13.61915  13 00 04.551  +17 53 11.39  21.7G 14DC143   F51  C~2kPq      
2016 04  11.31152  12 54 27.662  +18 30 46.85  21.5G 14DC143   F51  C~2kPq      
2016 04  11.32317  12 54 27.523  +18 30 47.53  21.6G 14DC143   F51  C~2kPq      
2016 04  11.33484  12 54 27.384  +18 30 48.15  21.6G 14DC143   F51  C~2kPq      
2016 04  11.34670  12 54 27.239  +18 30 48.72  21.5G 14DC143   F51  C~2kPq      
2016 04  24.46192  12 51 56.216  +18 38 54.43  22.0G 14DC143   F51  C~2kPq      
2016 05  03.28190  12 50 24.956  +18 40 35.75  21.9G 14DC143   F51  C~2kPq      
2016 05  23.36331  12 47 46.845  +18 32 54.29  21.9G 14DC143   F51  C~2kPq      
2016 06  04.31084  12 46 54.409  +18 21 07.80  21.8G 14DC143   F51  C~2kPq      
2016 06  04.32460  12 46 54.368  +18 21 06.84  21.9G 14DC143   F51  C~2kPq      
2016 06  04.33857  12 46 54.319  +18 21 05.84  22.0G 14DC143   F51  C~2kPq      
2016 06  04.35244  12 46 54.277  +18 21 04.85  21.8G 14DC143   F51  C~2kPq      
2017 02  02.55066  13 34 21.437  +13 32 04.90  21.8G 14DC143   F51  C~2kPq      
2017 02  02.56229  13 34 21.450  +13 32 05.97  21.9G 14DC143   F51  C~2kPq      
2017 02  02.57394  13 34 21.432  +13 32 07.09  22.1G 14DC143   F51  C~2kPq      
2017 02  02.58560  13 34 21.421  +13 32 08.25  21.9G 14DC143   F51  C~2kPq      
2017 03  19.59079  13 29 57.504  +14 48 37.42  21.9G 14DC143   F51  C~2kPq      
2017 03  27.56178  13 28 31.489  +15 00 40.42  21.6G 14DC143   F51  C~2kPq      
2017 03  27.57315  13 28 31.365  +15 00 41.39  21.3G 14DC143   F51  C~2kPq      
2017 03  27.58453  13 28 31.235  +15 00 42.42  21.5G 14DC143   F51  C~2kPq      
2018 02  12.56145  14 02 00.837  +10 33 28.79  21.8G 14DC143   F51  C~2kPq      
2018 02  12.57356  14 02 00.821  +10 33 29.74  22.1G 14DC143   F51  C~2kPq      
2018 02  12.58566  14 02 00.798  +10 33 30.86  21.8G 14DC143   F51  C~2kPq      
2018 02  12.59772  14 02 00.787  +10 33 32.05  22.5G 14DC143   F51  C~2kPq      

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     0.45       0.00    -0.17
  2   0.0000      0.00    -0.35       0.00    -0.32
  3   0.0000      0.00    -0.08       0.00     0.01
  4   0.0001      0.00     0.03       0.00     0.05
  5   3.9512      0.00     0.09       0.00    -0.14
  6   3.9513      0.00    -0.03       0.00     0.07
  7   3.9513      0.00     0.02       0.00     0.01
  8   3.9513      0.00    -0.07       0.00    -0.06
  9   4.0932      0.00     0.00       0.00     0.20
 10   4.0932      0.00    -0.07       0.00     0.10
 11   4.0933      0.00     0.01       0.00     0.25
 12   4.0933      0.00    -0.08       0.00    -0.09
 13   4.8878      0.00    -0.04       0.00     0.01
 14   4.8879      0.00    -0.06       0.00     0.10
 15   5.0659      0.00    -0.09       0.00    -0.08
 16   5.9586      0.00    -0.07       0.00    -0.02
 17   6.0322      0.00    -0.01       0.00     0.10
 18   6.0323      0.00    -0.04       0.00    -0.21
 19   6.0323      0.00     0.18       0.00     0.10
 20   6.0324      0.00    -0.01       0.00    -0.09
 21   6.0428      0.00     0.03       0.00    -0.05
 22   6.0428      0.00     0.08       0.00     0.05
 23   6.0429      0.00     0.02       0.00    -0.00
 24   6.0429      0.00     0.13       0.00    -0.02
 25   6.2152      0.00     0.28       0.00    -0.04
 26   6.2152      0.00     0.39       0.00     0.14
 27   6.2153      0.00     0.54       0.00     0.06
 28   6.3300      0.00    -0.09       0.00    -0.06
 29   6.8756      0.00    -0.08       0.00     0.02
 30   6.8811      0.00    -0.15       0.00    -0.10
 31   6.9330      0.00     0.08       0.00    -0.09
 32   6.9330      0.00    -0.14       0.00    -0.09
 33   6.9331      0.00    -0.07       0.00     0.12
 34   7.0945      0.00     0.08       0.00     0.12
 35   7.0945      0.00    -0.05       0.00     0.16
 36   7.0945      0.00     0.06       0.00     0.14
 37   7.0946      0.00     0.01       0.00     0.26
 38   7.1733      0.00    -0.06       0.00    -0.02
 39   7.1733      0.00     0.07       0.00    -0.00
 40   7.1733      0.00    -0.05       0.00     0.10
 41   7.1733      0.00    -0.01       0.00     0.04
 42   7.8696      0.00    -0.18       0.00    -0.09
 43   7.9869      0.00     0.04       0.00    -0.01
 44   7.9870      0.00    -0.06       0.00     0.18
 45   7.9870      0.00    -0.16       0.00     0.06
 46   7.9870      0.00     0.02       0.00    -0.08
 47   8.0335      0.00     0.18       0.00    -0.14
 48   8.0634      0.00    -0.27       0.00     0.45
 49   8.0635      0.00    -0.34       0.00     0.39
 50   8.0885      0.00    -0.15       0.00     0.00
 51   8.0885      0.00    -0.04       0.00    -0.01
 52   8.0885      0.00     0.11       0.00     0.07
 53   8.0886      0.00    -0.11       0.00    -0.05
 54   8.0912      0.00     0.11       0.00    -0.10
 55   8.0913      0.00    -0.04       0.00    -0.02
 56   8.0913      0.00     0.02       0.00    -0.03
 57   8.0913      0.00    -0.01       0.00    -0.13
 58   8.1699      0.00    -0.09       0.00    -0.03
 59   8.1699      0.00    -0.05       0.00     0.04
 60   8.1699      0.00     0.00       0.00     0.04
 61   8.1700      0.00    -0.00       0.00    -0.01
 62   8.2059      0.00     0.09       0.00    -0.04
 63   8.2300      0.00    -0.23       0.00     0.05
 64   8.2850      0.00    -0.28       0.00    -0.11
 65   8.3177      0.00     0.01       0.00    -0.09
 66   8.3178      0.00     0.05       0.00    -0.06
 67   8.3178      0.00    -0.02       0.00    -0.05
 68   8.3178      0.00     0.01       0.00    -0.04
 69   8.9837      0.00    -0.15       0.00    -0.03
 70   8.9837      0.00     0.14       0.00    -0.05
 71   8.9837      0.00    -0.03       0.00    -0.01
 72   8.9838      0.00    -0.09       0.00     0.06
 73   9.1070      0.00    -0.07       0.00    -0.05
 74   9.1288      0.00     0.01       0.00    -0.10
 75   9.1288      0.00     0.10       0.00    -0.10
 76   9.1289      0.00     0.10       0.00    -0.04
 77  10.0104      0.00     0.06       0.00    -0.04
 78  10.0104      0.00     0.07       0.00    -0.17
 79  10.0105      0.00    -0.02       0.00    -0.13
 80  10.0105      0.00     0.08       0.00    -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.

14DC143    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        20.273    20.273    20.273
ecceobj         0.316     0.316     0.316
incobj         20.972    20.972    20.972
qmin           13.736    13.736    13.736
qmax           27.013    27.043    26.784
amean          20.256    20.309    20.228
amin           20.032    20.032    20.032
amax           20.706    20.687    20.480
emean           0.311     0.310     0.312
emin            0.300     0.299     0.302
emax            0.319     0.319     0.319
imean          19.511    19.547    19.489
imin           19.353    19.353    19.354
imax           19.823    19.936    19.680
excite_mean     0.456     0.456     0.456
fracstop        0.002     0.003     0.002
cjmean          2.955     2.952     2.955

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        70.8      73.4      70.2
kozaiamp         14.0      18.4      13.8