Orbit Fit and Astrometric record for 14DT143

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: 14DT143   
# Created Thu Dec 14 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:   3.00y
# First observation: 2011/04/03
#  Last observation: 2014/04/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.000993   0.034489  -0.000353   0.016047   0.025763   0.000000
# Chi-squared of fit:     4.21 DOF:   26 RMS:  0.09
# Min/Max residuals:    -0.19    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.938036E-05  3.361930E-02  8.219864E-06  1.577726E-02  2.806934E-02 -4.241978E-03
# Covariance matrix:
  1.1989E-12 -1.3294E-12  3.2643E-13 -5.0781E-13 -1.0408E-13 -8.7240E-12
 -1.3294E-12  1.9208E-12 -5.2549E-13  8.1827E-13  1.1806E-13  1.4058E-11
  3.2643E-13 -5.2549E-13  6.5368E-13 -4.4077E-13 -6.7030E-14 -4.0843E-12
 -5.0781E-13  8.1827E-13 -4.4077E-13  4.7027E-13  9.1241E-14  6.3497E-12
 -1.0408E-13  1.1806E-13 -6.7030E-14  9.1241E-14  8.3993E-13  1.5624E-12
 -8.7240E-12  1.4058E-11 -4.0843E-12  6.3497E-12  1.5624E-12  1.0908E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.063227 -153.133592    0.237219   -0.069154   -0.972866  2455655.024446
# Heliocentric elements and errors
Epoch:              2455650.5000  =  2011/03/30
Mean Anomaly:          357.09067 +/-     0.007
Argument of Peri:        8.22109 +/-     0.041
Long of Asc Node:      214.84252 +/-     0.000
Inclination:            25.47300 +/-     0.001
Eccentricity:         0.64560437 +/-    0.0002
Semi-Major Axis:    101.39947203 +/-    0.0500
Time of Perihelion: 2458664.4912 +/-       6.8
Perihelion:          35.93552953 +/-    0.0244
Aphelion:           166.86341453 +/-    0.0840
Period (y)             1021.0846 +/-      0.76
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.67369639 +/-    0.0010
Ecliptic Y          -16.28929075 +/-    0.0005
Ecliptic Z           -2.52404238 +/-    0.0001
Ecliptic XDOT         0.00175115 +/-    0.0000
Ecliptic YDOT        -0.00278202 +/-    0.0000
Ecliptic ZDOT         0.00156437 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.59620498 +/-    0.0010
Geocenter to KBO     35.62606603 +/-    0.0012
# Hcoef:  6.65

The following table shows the complete astrometric record for 14DT143. 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 (14DT143) followed by the observatory code and reference code for the source of the astrometry.

2011 04  03.52368  13 33 40.343  -14 08 29.65  22.4r 14DT143   F51  C~1w3v      
2012 04  16.40217  13 41 20.592  -13 51 25.84  22.1w 14DT143   F51  C~1w3v      
2012 04  16.41540  13 41 20.527  -13 51 25.38  22.1w 14DT143   F51  C~1w3v      
2012 04  16.42859  13 41 20.456  -13 51 24.82  22.3w 14DT143   F51  C~1w3v      
2012 04  16.44183  13 41 20.381  -13 51 24.33  22.1w 14DT143   F51  C~1w3v      
2013 01  21.63914  13 53 50.470  -14 11 00.15  22.3w 14DT143   F51  C~1w3v      
2013 01  21.64465  13 53 50.472  -14 11 00.19  22.7w 14DT143   F51  C~1w3v      
2013 01  21.65016  13 53 50.475  -14 11 00.19  22.4w 14DT143   F51  C~1w3v      
2013 01  21.65568  13 53 50.491  -14 11 00.24  22.5w 14DT143   F51  C~1w3v      
2014 02  25.57326  14 02 19.975  -13 54 41.10  22.2w 14DT143   F51  C~1w3v      
2014 02  25.61107  14 02 19.891  -13 54 40.66  22.4w 14DT143   F51  C~1w3v      
2014 03  27.52812  14 00 40.309  -13 41 50.01  22.5w 14DT143   F51  C~1w3v      
2014 03  27.55031  14 00 40.229  -13 41 49.22  22.3w 14DT143   F51  C~1w3v      
2014 03  27.56115  14 00 40.150  -13 41 49.00  22.4w 14DT143   F51  C~1w3v      
2014 04  04.47381  14 00 04.435  -13 37 28.15  22.2w 14DT143   F51  C~1w3v      
2014 04  04.48516  14 00 04.379  -13 37 27.88  22.3w 14DT143   F51  C~1w3v      

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    -0.09       0.00     0.14
  2   1.0373   5875.30     0.08    3381.43    -0.05
  3   1.0373   5874.25     0.12    3381.52    -0.07
  4   1.0374   5873.09     0.03    3381.67    -0.03
  5   1.0374   5871.89    -0.08    3381.74    -0.07
  6   1.8046  16541.27     0.03    6137.88     0.04
  7   1.8046  16541.32    -0.03    6137.85    -0.01
  8   1.8046  16541.36    -0.09    6137.87    -0.01
  9   1.8046  16541.59     0.05    6137.90    -0.00
 10   2.8995  23248.29     0.03    9624.70     0.15
 11   2.8996  23246.97     0.10    9624.70    -0.10
 12   2.9815  21600.73    -0.03    9856.62    -0.05
 13   2.9816  21599.35     0.19    9856.96     0.12
 14   2.9816  21598.18    -0.19    9856.77    -0.15
 15   3.0033  21013.29    -0.07    9924.35     0.10
 16   3.0033  21012.43    -0.05    9924.32    -0.02

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.

14DT143    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       100.764   100.907   100.621
ecceobj         0.643     0.644     0.643
incobj         25.492    25.492    25.492
qmin           33.598    33.437    35.143
qmax          174.229   179.489   173.704
amean         101.097   103.593   102.161
amin           98.621   100.907   100.409
amax          105.029   106.927   104.939
emean           0.651     0.660     0.643
emin            0.634     0.640     0.629
emax            0.667     0.679     0.656
imean          24.928    24.802    26.536
imin           23.781    23.504    25.668
imax           26.231    26.183    27.393
excite_mean     0.776     0.782     0.783
fracstop        1.000     1.000     1.000
cjmean          2.819     2.819     2.819

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        89.7      99.8      43.2
kozaiamp         84.3      92.1      34.7