Orbit Fit and Astrometric record for 14DD143

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: 14DD143   
# Created Sat Dec 16 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   25
# Arc:   2.82y
# First observation: 2012/03/27
#  Last observation: 2015/01/21
Preliminary a, adot, b, bdot, g, gdot:
   0.000222   0.022745   0.000001   0.000650   0.023828   0.000000
# Chi-squared of fit:    10.85 DOF:   42 RMS:  0.12
# Min/Max residuals:    -0.33    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.724930E-05  2.296467E-02 -2.387120E-06  6.555344E-04  2.375838E-02 -1.445925E-04
# Covariance matrix:
  6.7847E-13 -6.4956E-13  6.6640E-15 -1.3182E-14 -4.4273E-13 -6.4480E-12
 -6.4956E-13  8.5928E-13 -1.0538E-14  2.0829E-14  6.8914E-13  1.0178E-11
  6.6640E-15 -1.0538E-14  3.6906E-13 -1.5962E-13 -1.0086E-14 -1.4039E-13
 -1.3182E-14  2.0829E-14 -1.5962E-13  8.3149E-14  2.0510E-14  2.7929E-13
 -4.4273E-13  6.8914E-13 -1.0086E-14  2.0510E-14  1.0588E-12  1.0430E-11
 -6.4480E-12  1.0178E-11 -1.4039E-13  2.7929E-13  1.0430E-11  1.3774E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.032004  167.181268   -0.338878   -0.016967   -0.941771  2456013.839696
# Heliocentric elements and errors
Epoch:              2456010.5000  =  2012/03/24
Mean Anomaly:           11.79633 +/-     1.626
Argument of Peri:      316.28999 +/-     1.687
Long of Asc Node:      199.09661 +/-     0.010
Inclination:             1.93351 +/-     0.001
Eccentricity:         0.01759579 +/-    0.0001
Semi-Major Axis:     43.78465906 +/-    0.0058
Time of Perihelion: 2452542.9263 +/-     478.1
Perihelion:          43.01423351 +/-    0.0073
Aphelion:            44.55508461 +/-    0.0075
Period (y)              289.7285 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -42.02568504 +/-    0.0018
Ecliptic Y            9.21651335 +/-    0.0004
Ecliptic Z           -0.75817507 +/-    0.0000
Ecliptic XDOT        -0.00057710 +/-    0.0000
Ecliptic YDOT        -0.00257997 +/-    0.0000
Ecliptic ZDOT         0.00007593 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.03111840 +/-    0.0017
Geocenter to KBO     42.09041799 +/-    0.0018
# Hcoef:  6.05

The following table shows the complete astrometric record for 14DD143. 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 (14DD143) followed by the observatory code and reference code for the source of the astrometry.

2012 03  27.33893  11 11 13.271  +04 06 44.94  22.4w 14DD143   F51  C~1vXG      
2012 03  27.35338  11 11 13.214  +04 06 44.68  22.5w 14DD143   F51  C~1vXG      
2012 03  27.36783  11 11 13.163  +04 06 44.97  22.5w 14DD143   F51  C~1vXG      
2013 03  05.41882  11 17 44.443  +03 27 40.03  22.5w 14DD143   F51  C~1vXG      
2013 03  05.43376  11 17 44.375  +03 27 40.50  22.4w 14DD143   F51  C~1vXG      
2013 03  05.44869  11 17 44.307  +03 27 40.81  22.3w 14DD143   F51  C~1vXG      
2013 03  05.46368  11 17 44.239  +03 27 41.41  22.3w 14DD143   F51  C~1vXG      
2014 02  28.40363  11 23 02.565  +02 56 20.84  22.1w 14DD143   F51  C~1vXG      
2014 02  28.41599  11 23 02.514  +02 56 21.26  22.5w 14DD143   F51  C~1vXG      
2014 02  28.42850  11 23 02.463  +02 56 21.59  22.1w 14DD143   F51  C~1vXG      
2014 02  28.44089  11 23 02.397  +02 56 21.83  22.2w 14DD143   F51  C~1vXG      
2014 03  24.35050  11 21 18.009  +03 07 39.40  22.2w 14DD143   F51  C~1vXG      
2014 03  24.36260  11 21 17.950  +03 07 39.75  22.5w 14DD143   F51  C~1vXG      
2014 03  24.37474  11 21 17.904  +03 07 40.21  22.4w 14DD143   F51  C~1vXG      
2014 05  20.28134  11 18 33.276  +03 26 26.53  22.3w 14DD143   F51  C~1vXG      
2014 05  20.30470  11 18 33.245  +03 26 26.95  22.6w 14DD143   F51  C~1vXG      
2014 05  20.31638  11 18 33.221  +03 26 26.89  22.7w 14DD143   F51  C~1vXG      
2015 01  19.52663  11 30 17.529  +02 12 38.51  22.6w 14DD143   F51  C~1vXG      
2015 01  19.54014  11 30 17.508  +02 12 38.85  22.6w 14DD143   F51  C~1vXG      
2015 01  19.55368  11 30 17.506  +02 12 38.82  22.7w 14DD143   F51  C~1vXG      
2015 01  19.56726  11 30 17.444  +02 12 39.09  22.7w 14DD143   F51  C~1vXG      
2015 01  21.55962  11 30 12.702  +02 13 08.29  22.5w 14DD143   F51  C~1vXG      
2015 01  21.57118  11 30 12.660  +02 13 08.34  22.5w 14DD143   F51  C~1vXG      
2015 01  21.58273  11 30 12.645  +02 13 08.52  22.7w 14DD143   F51  C~1vXG      
2015 01  21.59433  11 30 12.613  +02 13 08.94  22.6w 14DD143   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 (  -0.41)      0.00 (   0.58)
  2   0.0000     -0.68    -0.11      -0.57     0.01
  3   0.0001     -1.50     0.06      -0.60    -0.03
  4   0.9393   6307.64     0.06     122.48     0.00
  5   0.9393   6306.52     0.03     122.51     0.04
  6   0.9394   6305.46     0.06     122.40    -0.07
  7   0.9394   6304.29    -0.02     122.56     0.09
  8   1.9249  11437.20    -0.01     257.14    -0.11
  9   1.9249  11436.33     0.01     257.23    -0.02
 10   1.9250  11435.49     0.07     257.23    -0.01
 11   1.9250  11434.49    -0.05     257.07    -0.17
 12   1.9904   9725.91    -0.06     268.16     0.04
 13   1.9905   9724.96    -0.15     268.13     0.01
 14   1.9905   9724.14    -0.11     268.29     0.16
 15   2.1463   7010.15     0.20     340.61    -0.03
 16   2.1464   7009.56     0.02     340.82     0.15
 17   2.1464   7009.25    -0.08     340.62    -0.06
 18   2.8150  18498.93    -0.33     404.07    -0.17
 19   2.8151  18498.50    -0.23     404.26     0.04
 20   2.8151  18498.49     0.28     404.22     0.01
 21   2.8151  18497.52    -0.16     404.10    -0.09
 22   2.8206  18420.07     0.15     403.00     0.09
 23   2.8206  18419.47     0.03     402.80    -0.10
 24   2.8207  18419.19     0.23     402.88    -0.01
 25   2.8207  18418.58     0.10     403.08     0.20

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.

14DD143    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.736    43.752    43.719
ecceobj         0.016     0.016     0.016
incobj          1.934     1.934     1.934
qmin           42.192    42.235    42.198
qmax           45.745    45.682    45.737
amean          43.886    43.903    43.870
amin           43.554    43.568    43.536
amax           44.224    44.241    44.211
emean           0.020     0.019     0.020
emin            0.004     0.003     0.003
emax            0.035     0.034     0.035
imean           3.039     3.037     3.040
imin            2.387     2.391     2.386
imax            3.676     3.670     3.686
excite_mean     0.057     0.057     0.057
fracstop        1.000     1.000     1.000
cjmean          3.096     3.097     3.096

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       179.4     179.5     179.8
kozaiamp        180.0     180.0     180.0