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 Thu Jul 19 01:38:10 2018
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   28
# Arc:   6.04y
# First observation: 2012/03/27
#  Last observation: 2018/04/10
Preliminary a, adot, b, bdot, g, gdot:
  -0.000071   0.022958  -0.000007   0.000656   0.023612   0.000000
# Chi-squared of fit:    11.00 DOF:   44 RMS:  0.12
# Min/Max residuals:    -0.32    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.710244E-05  2.296495E-02 -2.407252E-06  6.555519E-04  2.375873E-02 -1.404017E-04
# Covariance matrix:
  5.2898E-13 -3.7236E-13  8.1068E-15 -7.9457E-15 -8.6787E-14 -2.2218E-12
 -3.7236E-13  3.4505E-13 -8.5115E-15  8.4233E-15  2.8614E-14  2.3359E-12
  8.1068E-15 -8.5115E-15  2.4799E-13 -9.0265E-14 -1.3331E-15 -6.6152E-14
 -7.9457E-15  8.4233E-15 -9.0265E-14  4.3169E-14  1.0533E-15  6.5294E-14
 -8.6787E-14  2.8614E-14 -1.3331E-15  1.0533E-15  2.1009E-13  3.5520E-13
 -2.2218E-12  2.3359E-12 -6.6152E-14  6.5294E-14  3.5520E-13  1.8148E-11
#      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:           12.38184 +/-     0.554
Argument of Peri:      315.68379 +/-     0.575
Long of Asc Node:      199.09628 +/-     0.007
Inclination:             1.93353 +/-     0.000
Eccentricity:         0.01761318 +/-    0.0001
Semi-Major Axis:     43.78304292 +/-    0.0039
Time of Perihelion: 2452371.0138 +/-     162.8
Perihelion:          43.01188419 +/-    0.0058
Aphelion:            44.55420165 +/-    0.0059
Period (y)              289.7124 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -42.02507696 +/-    0.0008
Ecliptic Y            9.21638134 +/-    0.0002
Ecliptic Z           -0.75816471 +/-    0.0000
Ecliptic XDOT        -0.00057757 +/-    0.0000
Ecliptic YDOT        -0.00257986 +/-    0.0000
Ecliptic ZDOT         0.00007592 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.03049608 +/-    0.0008
Geocenter to KBO     42.08979570 +/-    0.0008
# 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      
2018 04  10.17142  11 39 48.063  +01 19 09.91  22.1R 14DD143   G37  C~2bH6      
2018 04  10.21699  11 39 47.836  +01 19 12.50        14DD143   G37  C~2bH6      
2018 04  10.26417  11 39 47.546  +01 19 17.26        14DD143   G37  C~2bH6      

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 (  -0.38)      0.00 (   0.59)
  2   0.0000     -0.68    -0.07      -0.57     0.01
  3   0.0001     -1.50     0.09      -0.60    -0.03
  4   0.9393   6307.64     0.04     122.48     0.00
  5   0.9393   6306.52     0.01     122.51     0.04
  6   0.9394   6305.46     0.04     122.40    -0.07
  7   0.9394   6304.29    -0.04     122.56     0.09
  8   1.9249  11437.20    -0.03     257.14    -0.11
  9   1.9249  11436.33    -0.01     257.23    -0.02
 10   1.9250  11435.49     0.05     257.23    -0.01
 11   1.9250  11434.49    -0.07     257.07    -0.17
 12   1.9904   9725.91    -0.06     268.16     0.04
 13   1.9905   9724.96    -0.16     268.13     0.01
 14   1.9905   9724.14    -0.11     268.29     0.16
 15   2.1463   7010.15     0.22     340.61    -0.03
 16   2.1464   7009.56     0.04     340.82     0.15
 17   2.1464   7009.25    -0.07     340.62    -0.06
 18   2.8150  18498.93    -0.32     404.07    -0.17
 19   2.8151  18498.50    -0.22     404.26     0.04
 20   2.8151  18498.49     0.29     404.22     0.01
 21   2.8151  18497.52    -0.15     404.10    -0.09
 22   2.8206  18420.07     0.17     403.00     0.09
 23   2.8206  18419.47     0.04     402.80    -0.10
 24   2.8207  18419.19     0.24     402.88    -0.01
 25   2.8207  18418.58     0.11     403.08     0.20
 26   6.0365  27741.41 (   1.20)    826.98 (  -1.01)
 27   6.0366  27737.18    -0.02     828.03     0.01
 28   6.0368  27731.20 (  -2.89)    830.71 (   2.66)

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        43.734    43.746    43.722
ecceobj         0.016     0.016     0.016
incobj          1.934     1.934     1.934
qmin           42.201    42.200    42.195
qmax           45.743    45.734    45.696
amean          43.885    43.897    43.873
amin           43.548    43.558    43.530
amax           44.225    44.236    44.212
emean           0.020     0.020     0.019
emin            0.004     0.004     0.003
emax            0.034     0.034     0.034
imean           3.039     3.037     3.041
imin            2.388     2.387     2.386
imax            3.678     3.675     3.681
excite_mean     0.057     0.057     0.057
fracstop        1.000     1.000     1.000
cjmean          3.096     3.096     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       179.5     180.4     179.6
kozaiamp        180.0     180.0     180.0