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 Sat Dec 15 02:11:03 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   23 observations of   23
# Arc:   7.13y
# First observation: 2011/04/03
#  Last observation: 2018/05/20
# Chi-squared of fit:     8.44 DOF:   40 RMS:  0.11
# Min/Max residuals:    -0.28    0.28
# Exact a, adot, b, bdot, g, gdot:
  2.040930E-05  3.361771E-02  8.770475E-06  1.577652E-02  2.806967E-02 -4.253266E-03
# Covariance matrix:
  5.0792E-13 -2.5632E-13  1.3912E-13 -9.9164E-14 -1.0960E-13 -7.6869E-13
 -2.5632E-13  1.7613E-13 -1.1636E-13  8.3664E-14 -4.0663E-15  6.5059E-13
  1.3912E-13 -1.1636E-13  3.0630E-13 -1.1464E-13  5.3556E-14 -5.0417E-13
 -9.9164E-14  8.3664E-14 -1.1464E-13  6.2949E-14 -4.2492E-14  3.6495E-13
 -1.0960E-13 -4.0663E-15  5.3556E-14 -4.2492E-14  5.3003E-13 -3.4159E-13
 -7.6869E-13  6.5059E-13 -5.0417E-13  3.6495E-13 -3.4159E-13  2.8448E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.063227 -153.133592    0.237219   -0.069154   -0.972866  2455655.024446
# Heliocentric elements and errors
Epoch:              2455654.5000  =  2011/04/03
Mean Anomaly:          357.08589 +/-     0.002
Argument of Peri:        8.26703 +/-     0.008
Long of Asc Node:      214.84247 +/-     0.000
Inclination:            25.47308 +/-     0.000
Eccentricity:         0.64554153 +/-    0.0001
Semi-Major Axis:    101.37069688 +/-    0.0382
Time of Perihelion: 2458672.1641 +/-     208.9
Perihelion:          35.93170178 +/-    0.0183
Aphelion:           166.80969198 +/-    0.0640
Period (y)             1020.6500 +/-      0.58
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.67330172 +/-    0.0008
Ecliptic Y          -16.28913190 +/-    0.0004
Ecliptic Z           -2.52399261 +/-    0.0001
Ecliptic XDOT         0.00175205 +/-    0.0000
Ecliptic YDOT        -0.00278135 +/-    0.0000
Ecliptic ZDOT         0.00156436 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.59586747 +/-    0.0008
Geocenter to KBO     35.62575433 +/-    0.0009
# Hcoef:  6.70

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      
2015 04  25.14742  14 07 20.33   -13 12 57.9         14DT143   W84  C~2fcA      
2015 04  25.21624  14 07 19.98   -13 12 55.4   22.4V 14DT143   W84  C~2fcA      
2015 04  26.17745  14 07 15.17   -13 12 20.7         14DT143   W84  C~2fcA      
2015 04  26.24659  14 07 14.82   -13 12 18.2         14DT143   W84  C~2fcA      
2018 05  20.153970 14 32 10.849  -12 14 51.31  22.4R 14DT143   705              
2018 05  20.189730 14 32 10.684  -12 14 50.08        14DT143   705              
2018 05  20.227770 14 32 10.505  -12 14 48.68        14DT143   705              

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    -0.28       0.00     0.13
  2   1.0373      0.00     0.14       0.00    -0.10
  3   1.0373      0.00     0.17       0.00    -0.13
  4   1.0374      0.00     0.10       0.00    -0.06
  5   1.0374      0.00    -0.02       0.00    -0.06
  6   1.8046      0.00     0.06       0.00     0.06
  7   1.8046      0.00    -0.01       0.00     0.04
  8   1.8046      0.00    -0.07       0.00     0.05
  9   1.8046      0.00     0.07       0.00     0.01
 10   2.8995      0.00     0.05       0.00     0.17
 11   2.8996      0.00     0.03       0.00    -0.10
 12   2.9815      0.00     0.00       0.00    -0.03
 13   2.9816      0.00     0.28       0.00     0.05
 14   2.9816      0.00    -0.19       0.00    -0.08
 15   3.0033      0.00     0.05       0.00     0.10
 16   3.0033      0.00     0.02       0.00    -0.01
 17   4.0592      0.00    -0.11       0.00    -0.04
 18   4.0594      0.00    -0.10       0.00    -0.02
 19   4.0620      0.00    -0.14       0.00     0.00
 20   4.0622      0.00    -0.10       0.00     0.01
 21   7.1284      0.00    -0.06       0.00    -0.15
 22   7.1284      0.00     0.04       0.00    -0.03
 23   7.1286      0.00     0.09       0.00     0.19

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       100.738   100.737   100.740
ecceobj         0.643     0.643     0.643
incobj         25.492    25.492    25.492
qmin           33.570    33.435    33.833
qmax          178.688   178.085   176.394
amean         102.914   102.813   102.507
amin          100.395   100.416   100.447
amax          106.928   106.874   105.698
emean           0.656     0.657     0.655
emin            0.636     0.640     0.636
emax            0.675     0.674     0.671
imean          25.116    24.940    25.183
imin           23.779    23.597    24.177
imax           26.710    26.369    26.765
excite_mean     0.782     0.781     0.781
fracstop        1.000     1.000     1.000
cjmean          2.818     2.818     2.818

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        93.4      93.2      87.1
kozaiamp         91.1      90.4      82.7