Orbit Fit and Astrometric record for 14DT112

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: 14DT112   
# Created Sun Dec 17 02:38:00 2017
# Orbit generated from Bernstein formalism
# Fitting   61 observations of   61
# Arc:   3.16y
# First observation: 2012/02/12
#  Last observation: 2015/04/10
Preliminary a, adot, b, bdot, g, gdot:
  -0.004363   0.147492  -0.002726   0.109315   0.076003   0.000000
# Chi-squared of fit:    50.70 DOF:  116 RMS:  0.16
# Min/Max residuals:    -0.72    0.37
# Exact a, adot, b, bdot, g, gdot:
  2.746187E-05  1.456320E-01  2.154569E-05  1.079293E-01  8.041957E-02  8.075982E-03
# Covariance matrix:
  1.5916E-13 -1.0243E-13  1.7109E-14 -3.9607E-14  9.2204E-15 -1.1150E-13
 -1.0243E-13  1.5381E-13 -4.6562E-14  1.0173E-13  3.5991E-14  2.8403E-13
  1.7109E-14 -4.6562E-14  1.5355E-13 -9.0118E-14 -1.6787E-14 -1.0231E-13
 -3.9607E-14  1.0173E-13 -9.0118E-14  1.0587E-13  2.3543E-14  2.2539E-13
  9.2204E-15  3.5991E-14 -1.6787E-14  2.3543E-14  1.4534E-13  6.0297E-14
 -1.1150E-13  2.8403E-13 -1.0231E-13  2.2539E-13  6.0297E-14  6.3004E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
  -19.865566  135.314644   -0.133858   -0.332844   -0.921247  2455969.920806
# Heliocentric elements and errors
Epoch:              2455960.5000  =  2012/02/03
Mean Anomaly:            0.99518 +/-     0.000
Argument of Peri:      321.55365 +/-     0.001
Long of Asc Node:      158.89406 +/-     0.000
Inclination:            40.48635 +/-     0.000
Eccentricity:         0.72527232 +/-    0.0000
Semi-Major Axis:     48.36074753 +/-    0.0043
Time of Perihelion: 2455620.9249 +/-       0.0
Perihelion:          13.28603575 +/-    0.0016
Aphelion:            83.43545932 +/-    0.0076
Period (y)              336.3161 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -9.10258302 +/-    0.0000
Ecliptic Y            8.81894124 +/-    0.0000
Ecliptic Z           -4.22527736 +/-    0.0000
Ecliptic XDOT        -0.00456272 +/-    0.0000
Ecliptic YDOT        -0.00246086 +/-    0.0000
Ecliptic ZDOT         0.00336242 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   13.35977960 +/-    0.0000
Geocenter to KBO     12.43478379 +/-    0.0001
# Hcoef: 10.54

The following table shows the complete astrometric record for 14DT112. 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 (14DT112) followed by the observatory code and reference code for the source of the astrometry.

2012 02  12.42004  08 48 06.187  -02 47 28.47  21.4r 14DT112   F51  C~1vXF      
2012 02  12.43179  08 48 06.019  -02 47 26.79  21.1r 14DT112   F51  C~1vXG      
2012 02  12.47073  08 48 05.562  -02 47 21.95  21.3i 14DT112   F51  C~1vXG      
2012 02  12.48335  08 48 05.418  -02 47 20.28  21.3i 14DT112   F51  C~1vXG      
2012 03  17.118137 08 42 52.79   -01 26 54.7   22.9g 14DT112   309  C~2HP3      
2012 03  17.120695 08 42 52.77   -01 26 54.3   23.1g 14DT112   309  C~2HP3      
2012 03  17.123669 08 42 52.76   -01 26 53.9   23.1g 14DT112   309  C~2HP3      
2012 03  17.126227 08 42 52.74   -01 26 53.5   23.5g 14DT112   309  C~2HP3      
2012 03  17.128820 08 42 52.72   -01 26 53.1   23.8g 14DT112   309  C~2HP3      
2013 11  09.60350  10 08 12.200  +02 45 53.06  22.3w 14DT112   F51  C~1w3v      
2013 11  09.61279  10 08 12.289  +02 45 52.51  22.1w 14DT112   F51  C~1w3v      
2013 11  09.61741  10 08 12.322  +02 45 52.63  21.6w 14DT112   F51  C~1w3v      
2014 01  24.56002  10 06 42.436  +03 31 12.63  21.5r 14DT112   F51  C~1w3v      
2014 02  10.43586  10 03 42.987  +04 02 34.06  21.6i 14DT112   F51  C@0614      
2014 02  10.44821  10 03 42.854  +04 02 35.69  21.4i 14DT112   F51  C@0614      
2014 02  10.47304  10 03 42.566  +04 02 38.75  21.7i 14DT112   F51  C~1w3v      
2014 02  23.35975  10 01 15.924  +04 29 33.96  21.8w 14DT112   F51  C@0614      
2014 02  23.37101  10 01 15.800  +04 29 35.40  21.8w 14DT112   F51  C@0614      
2014 02  23.38227  10 01 15.678  +04 29 37.00  21.8w 14DT112   F51  C~1w3v      
2014 02  26.46120  10 00 40.950  +04 36 16.16  21.8w 14DT112   F51  C@0614      
2014 02  26.47280  10 00 40.813  +04 36 17.65  21.6w 14DT112   F51  C@0614      
2014 02  26.48435  10 00 40.686  +04 36 19.00  21.7w 14DT112   F51  C@0614      
2014 02  26.49587  10 00 40.553  +04 36 20.52  21.9w 14DT112   F51  C~1w3v      
2014 02  28.35213  10 00 19.90   +04 40 22.4   21.5  14DT112   568  C~11X2      
2014 02  28.35338  10 00 19.89   +04 40 22.6   21.4  14DT112   568  C~11X2      
2014 02  28.35463  10 00 19.87   +04 40 22.8   21.4  14DT112   568  C~11X2      
2014 02  28.35988  10 00 19.833  +04 40 23.60  21.8w 14DT112   F51  C~1w3v      
2014 02  28.39590  10 00 19.438  +04 40 28.18  22.0w 14DT112   F51  C~1w3v      
2014 03  04.165490 09 59 38.19   +04 48 41.4   21.5R 14DT112   H01  C~11X2      
2014 03  04.178343 09 59 38.05   +04 48 43.1   21.4R 14DT112   H01  C~11X2      
2014 03  04.190836 09 59 37.91   +04 48 44.9   21.7R 14DT112   H01  C~11X2      
2014 03  04.196868 09 59 37.84   +04 48 45.6   21.5R 14DT112   H01  C~11X2      
2014 03  04.25530  09 59 37.17   +04 48 53.5         14DT112   711  C~11X2      
2014 03  04.25968  09 59 37.15   +04 48 53.6         14DT112   711  C~11X2      
2014 03  04.26950  09 59 37.04   +04 48 55.2         14DT112   711  C~11X2      
2014 03  24.30675  09 56 25.945  +05 31 58.92  22.1w 14DT112   F51  C~1w3v      
2014 03  24.31919  09 56 25.852  +05 32 00.64  22.3w 14DT112   F51  C~1w3v      
2014 03  24.33164  09 56 25.744  +05 32 01.81  22.1w 14DT112   F51  C~1w3v      
2014 03  24.34412  09 56 25.642  +05 32 03.43  21.8w 14DT112   F51  C~1w3v      
2014 04  24.26925  09 54 03.971  +06 28 24.20  21.9w 14DT112   F51  C~1w3v      
2015 01  16.48328  10 42 03.180  +06 18 08.24  22.2w 14DT112   F51  C~1vXG      
2015 01  16.49475  10 42 03.097  +06 18 09.36  22.3w 14DT112   F51  C~1vXG      
2015 01  16.50614  10 42 03.016  +06 18 10.42  22.3w 14DT112   F51  C~1vXG      
2015 01  16.51755  10 42 02.939  +06 18 11.58  22.2w 14DT112   F51  C~1vXG      
2015 02  15.42078  10 37 34.983  +07 13 20.39  22.1w 14DT112   F51  C~1vXG      
2015 02  15.44545  10 37 34.696  +07 13 23.40  22.1w 14DT112   F51  C~1vXG      
2015 02  15.45777  10 37 34.583  +07 13 24.82  22.2w 14DT112   F51  C~1vXG      
2015 03  14.36603  10 32 42.805  +08 09 29.06  22.1w 14DT112   F51  C~1vXG      
2015 03  14.39027  10 32 42.536  +08 09 31.83  22.1w 14DT112   F51  C~1vXG      
2015 03  14.40238  10 32 42.425  +08 09 33.33  22.3w 14DT112   F51  C~1vXG      
2015 03  15.30909  10 32 33.136  +08 11 24.06  21.9w 14DT112   F51  C~1vXG      
2015 03  15.32187  10 32 33.010  +08 11 25.67  21.8w 14DT112   F51  C~1vXG      
2015 03  15.33444  10 32 32.880  +08 11 27.23  21.9w 14DT112   F51  C~1vXG      
2015 03  15.34718  10 32 32.740  +08 11 28.68  21.9w 14DT112   F51  C~1vXG      
2015 03  15.37761  10 32 32.416  +08 11 32.55  22.2w 14DT112   F51  C~1vXG      
2015 03  15.38994  10 32 32.284  +08 11 33.98  22.1w 14DT112   F51  C~1vXG      
2015 03  15.40227  10 32 32.169  +08 11 35.74  22.2w 14DT112   F51  C~1vXG      
2015 03  15.41459  10 32 32.025  +08 11 36.98  22.1w 14DT112   F51  C~1vXG      
2015 04  10.25892  10 28 53.843  +08 59 19.89  22.4w 14DT112   F51  C~1vXG      
2015 04  10.27092  10 28 53.777  +08 59 20.91  22.0w 14DT112   F51  C~1vXG      
2015 04  10.28306  10 28 53.698  +08 59 22.13  22.3w 14DT112   F51  C~1vXG      

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     0.24       0.00    -0.07
  2   0.0000     -2.89    -0.20       0.90    -0.01
  3   0.0001    -10.83    -0.02       3.60    -0.11
  4   0.0002    -13.37     0.07       4.59    -0.03
  5   0.0923  -5877.69     0.04    3304.27    -0.01
  6   0.0923  -5878.09    -0.02    3304.57    -0.01
  7   0.0923  -5878.35     0.11    3304.91    -0.02
  8   0.0923  -5878.75     0.05    3305.21    -0.03
  9   0.0923  -5879.15    -0.01    3305.51    -0.03
 10   1.7418  66502.92     0.12   41227.35     0.26
 11   1.7418  66504.52     0.37   41227.24    -0.01
 12   1.7418  66505.02     0.20   41227.53     0.21
 13   1.9497  64266.68     0.20   43585.51     0.08
 14   1.9959  60834.54     0.04   44609.57    -0.11
 15   1.9960  60831.94     0.15   44610.58     0.08
 16   1.9960  60826.44     0.11   44612.26     0.14
 17   2.0313  58018.93     0.12   45526.93    -0.06
 18   2.0314  58016.54     0.22   45527.78    -0.04
 19   2.0314  58014.14     0.32   45528.81     0.15
 20   2.0398  57346.93    -0.09   45762.31     0.13
 21   2.0398  57344.33    -0.15   45763.14     0.09
 22   2.0399  57341.92    -0.03   45763.88    -0.04
 23   2.0399  57339.37    -0.06   45764.77    -0.02
 24   2.0450  56941.73    -0.25   45908.22    -0.21
 25   2.0450  56941.51    -0.19   45908.37    -0.15
 26   2.0450  56941.14    -0.29   45908.47    -0.14
 27   2.0450  56940.32     0.02   45909.11     0.10
 28   2.0451  56932.73     0.27   45911.80     0.04
 29   2.0554  56136.62    -0.17   46208.64    -0.04
 30   2.0555  56133.91    -0.15   46209.68    -0.02
 31   2.0555  56131.18    -0.24   46210.81     0.13
 32   2.0555  56129.87    -0.27   46211.18     0.02
 33   2.0557  56116.98    -0.72   46215.88     0.10
 34   2.0557  56116.63    -0.13   46215.88    -0.24
 35   2.0557  56114.43    -0.25   46216.97     0.08
 36   2.1106  52356.48    -0.09   47898.16     0.05
 37   2.1106  52354.52     0.01   47899.45     0.27
 38   2.1106  52352.49     0.03   47900.10    -0.15
 39   2.1107  52350.42     0.02   47901.24    -0.07
 40   2.1953  49158.08     0.10   50656.30     0.22
 41   2.9269  97894.61    -0.09   66642.35    -0.07
 42   2.9270  97892.73    -0.21   66643.07    -0.06
 43   2.9270  97890.92    -0.29   66643.74    -0.09
 44   2.9270  97889.14    -0.32   66644.54     0.02
 45   3.0089  91990.70     0.08   68622.19     0.15
 46   3.0090  91984.60    -0.22   68623.71     0.01
 47   3.0090  91982.12     0.21   68624.57     0.04
 48   3.0827  85746.30     0.14   70499.37     0.01
 49   3.0827  85740.70    -0.03   70500.72    -0.29
 50   3.0828  85738.28     0.26   70501.68    -0.16
 51   3.0853  85540.53     0.11   70565.33    -0.09
 52   3.0853  85537.82     0.23   70566.31     0.02
 53   3.0853  85535.05     0.25   70567.21     0.06
 54   3.0854  85532.13     0.16   70567.93    -0.10
 55   3.0854  85525.24     0.01   70570.16     0.04
 56   3.0855  85522.47    -0.01   70570.90    -0.05
 57   3.0855  85519.91     0.16   70572.12     0.33
 58   3.0855  85516.98    -0.03   70572.58    -0.06
 59   3.1563  80824.59    -0.10   72358.84    -0.02
 60   3.1563  80823.14     0.14   72359.55    -0.11
 61   3.1564  80821.39     0.12   72360.40    -0.06

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.

14DT112    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        48.620    48.631    48.608
ecceobj         0.726     0.726     0.726
incobj         40.445    40.445    40.445
qmin           12.734    12.462    12.694
qmax           87.545    87.982   102.796
amean          46.495    43.581    53.144
amin           44.411    40.836    46.749
amax           50.340    50.396    57.948
emean           0.655     0.634     0.711
emin            0.493     0.456     0.588
emax            0.739     0.746     0.776
imean          43.459    43.310    42.110
imin           38.299    38.107    37.505
imax           51.564    50.847    50.315
excite_mean     0.953     0.938     0.979
fracstop        0.287     0.261     0.322
cjmean          1.990     2.020     1.940

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       107.2     119.8     111.2
kozaiamp        179.8     179.9     180.0