Orbit Fit and Astrometric record for 14DH143

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: 14DH143   
# Created Tue Dec 19 02:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   3.00y
# First observation: 2012/02/28
#  Last observation: 2015/02/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000013   0.024282  -0.000001   0.000792   0.025746   0.000000
# Chi-squared of fit:    12.78 DOF:   54 RMS:  0.12
# Min/Max residuals:    -0.22    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.465961E-05  2.416458E-02  2.089498E-07  7.869881E-04  2.566569E-02 -2.861508E-03
# Covariance matrix:
  4.2819E-13 -4.6135E-13  5.6758E-15 -1.1417E-14 -2.9327E-13 -4.3863E-12
 -4.6135E-13  1.1502E-12 -1.9961E-14  3.8742E-14  1.1679E-12  1.4207E-11
  5.6758E-15 -1.9961E-14  2.9303E-13 -1.1558E-13 -2.3115E-14 -2.6125E-13
 -1.1417E-14  3.8742E-14 -1.1558E-13  5.5439E-14  4.3695E-14  5.0545E-13
 -2.9327E-13  1.1679E-12 -2.3115E-14  4.3695E-14  1.4657E-12  1.5441E-11
 -4.3863E-12  1.4207E-11 -2.6125E-13  5.0545E-13  1.5441E-11  1.8455E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.206497 -174.859239    0.432885    0.065535   -0.891023  2455986.009956
# Heliocentric elements and errors
Epoch:              2455980.5000  =  2012/02/23
Mean Anomaly:          240.24619 +/-     0.154
Argument of Peri:      199.15669 +/-     0.136
Long of Asc Node:      119.34085 +/-     0.006
Inclination:             4.52942 +/-     0.000
Eccentricity:         0.15815725 +/-    0.0003
Semi-Major Axis:     36.39154904 +/-    0.0072
Time of Perihelion: 2482654.3732 +/-      33.3
Perihelion:          30.63596175 +/-    0.0141
Aphelion:            42.14713633 +/-    0.0152
Period (y)              219.5377 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -39.62686183 +/-    0.0018
Ecliptic Y           -3.12964022 +/-    0.0002
Ecliptic Z            2.85796553 +/-    0.0001
Ecliptic XDOT         0.00053558 +/-    0.0000
Ecliptic YDOT        -0.00253540 +/-    0.0000
Ecliptic ZDOT         0.00006143 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.85286430 +/-    0.0018
Geocenter to KBO     38.96252825 +/-    0.0018
# Hcoef:  6.56

The following table shows the complete astrometric record for 14DH143. 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 (14DH143) followed by the observatory code and reference code for the source of the astrometry.

2012 02  28.50919  12 25 32.571  +01 49 10.53  22.6w 14DH143   F51  C~1vXH      
2012 02  28.52356  12 25 32.509  +01 49 10.89  22.8w 14DH143   F51  C~1vXH      
2012 02  28.53794  12 25 32.437  +01 49 11.23  22.5w 14DH143   F51  C~1vXH      
2013 03  19.48615  12 29 15.325  +01 28 56.78  22.7w 14DH143   F51  C~1vXH      
2013 03  19.50147  12 29 15.215  +01 28 57.35  22.5w 14DH143   F51  C~1vXH      
2013 03  19.51689  12 29 15.156  +01 28 57.76  22.7w 14DH143   F51  C~1vXH      
2013 03  19.53232  12 29 15.076  +01 28 58.54  22.4w 14DH143   F51  C~1vXH      
2014 02  26.51444  12 36 00.683  +00 47 06.23  22.9w 14DH143   F51  C~1vXH      
2014 02  26.52680  12 36 00.638  +00 47 06.70  22.8w 14DH143   F51  C~1vXH      
2014 02  26.53917  12 36 00.593  +00 47 07.04  22.6w 14DH143   F51  C~1vXH      
2014 02  26.55154  12 36 00.526  +00 47 07.24  22.7w 14DH143   F51  C~1vXH      
2014 04  29.25692  12 31 22.726  +01 17 23.93  22.5w 14DH143   F51  C~1vXH      
2014 04  29.26880  12 31 22.665  +01 17 24.36  22.4w 14DH143   F51  C~1vXH      
2014 04  29.28070  12 31 22.618  +01 17 24.30  22.6w 14DH143   F51  C~1vXH      
2014 05  27.30732  12 29 54.394  +01 24 42.52  22.4w 14DH143   F51  C~1vXH      
2014 05  27.31982  12 29 54.369  +01 24 42.71  22.7w 14DH143   F51  C~1vXH      
2014 05  27.33234  12 29 54.346  +01 24 42.80  22.8w 14DH143   F51  C~1vXH      
2015 01  23.55921  12 42 44.330  +00 03 04.36  22.5w 14DH143   F51  C~1vXH      
2015 01  23.57460  12 42 44.304  +00 03 04.90  22.6w 14DH143   F51  C~1vXH      
2015 01  23.58999  12 42 44.284  +00 03 05.07  22.8w 14DH143   F51  C~1vXH      
2015 01  25.53614  12 42 41.818  +00 03 35.03  22.4w 14DH143   F51  C~1vXH      
2015 01  25.55148  12 42 41.794  +00 03 35.03  22.9w 14DH143   F51  C~1vXH      
2015 01  25.58211  12 42 41.747  +00 03 35.48  22.5w 14DH143   F51  C~1vXH      
2015 02  16.50772  12 41 51.104  +00 11 20.81  22.5w 14DH143   F51  C~1vXH      
2015 02  16.52041  12 41 51.082  +00 11 20.98  22.5w 14DH143   F51  C~1vXH      
2015 02  16.53309  12 41 51.024  +00 11 21.53  22.2w 14DH143   F51  C~1vXH      
2015 02  16.54578  12 41 51.002  +00 11 21.78  22.7w 14DH143   F51  C~1vXH      
2015 02  27.54764  12 41 12.004  +00 16 26.09  23.0w 14DH143   F51  C~1vXH      
2015 02  27.56017  12 41 11.951  +00 16 26.59  22.9w 14DH143   F51  C~1vXH      
2015 02  27.58524  12 41 11.861  +00 16 27.40  22.7w 14DH143   F51  C~1vXH      

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     0.05       0.00     0.06
  2   0.0000     -1.00     0.05      -0.04    -0.02
  3   0.0001     -2.12    -0.07      -0.15    -0.18
  4   1.0540   3547.74     0.32     210.41     0.08
  5   1.0541   3546.00    -0.22     210.28    -0.07
  6   1.0541   3545.03     0.02     210.31    -0.05
  7   1.0541   3543.61    -0.18     210.55     0.18
  8   1.9959  10131.76    -0.00     320.50    -0.01
  9   1.9959  10130.95     0.01     320.66     0.11
 10   1.9960  10130.20     0.08     320.70     0.12
 11   1.9960  10129.19    -0.09     320.49    -0.14
 12   2.1649   5577.28     0.19     332.82     0.10
 13   2.1650   5576.27    -0.05     332.85     0.17
 14   2.1650   5575.64     0.10     332.51    -0.12
 15   2.2417   4186.61    -0.10     209.52    -0.09
 16   2.2418   4186.19    -0.09     209.55     0.00
 17   2.2418   4185.84    -0.02     209.50     0.02
 18   2.9023  16766.18     0.07     302.86    -0.08
 19   2.9023  16765.60    -0.14     303.21     0.17
 20   2.9023  16765.26    -0.12     303.24     0.11
 21   2.9077  16719.11    -0.01     316.07     0.21
 22   2.9077  16718.77     0.07     315.93    -0.02
 23   2.9078  16717.94     0.05     316.06    -0.07
 24   2.9678  15830.44    -0.19     441.40    -0.10
 25   2.9679  15830.06     0.15     441.43    -0.13
 26   2.9679  15829.04    -0.17     441.58    -0.03
 27   2.9679  15828.64     0.13     441.68     0.01
 28   2.9981  15167.20     0.09     488.45    -0.18
 29   2.9981  15166.26    -0.01     488.60    -0.08
 30   2.9982  15164.69     0.09     488.80     0.05

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.

14DH143    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.349    36.368    36.330
ecceobj         0.160     0.160     0.159
incobj          4.530     4.530     4.530
qmin           29.980    29.928    30.023
qmax           43.273    43.254    43.231
amean          36.477    36.477    36.477
amin           36.145    36.129    36.149
amax           36.857    36.863    36.832
emean           0.157     0.158     0.157
emin            0.136     0.137     0.138
emax            0.176     0.176     0.174
imean           3.961     4.002     3.932
imin            2.097     2.013     2.145
imax            5.851     6.095     5.766
excite_mean     0.173     0.174     0.172
fracstop        1.000     1.000     1.000
cjmean          2.993     2.992     2.993

libcent 0       180.2     180.2     179.8
libamp  0        48.8      58.4      40.2
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       182.8     174.4     185.0
kozaiamp        180.0     180.0     179.9