Orbit Fit and Astrometric record for 14DP143

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: 14DP143   
# Created Tue Oct 24 01:38:20 2017
# Orbit generated from Bernstein formalism
# Fitting   27 observations of   27
# Arc:   3.18y
# First observation: 2014/02/25
#  Last observation: 2017/05/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.000753   0.040427  -0.000236   0.017992   0.033486   0.000000
# Chi-squared of fit:    15.37 DOF:   48 RMS:  0.13
# Min/Max residuals:    -0.38    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.771922E-05  3.959034E-02  8.782178E-06  1.753065E-02  3.399911E-02 -3.275284E-03
# Covariance matrix:
  2.0840E-13 -2.9609E-13  4.6635E-14 -1.3832E-13  7.1062E-14 -2.4821E-12
 -2.9609E-13  7.5966E-13 -1.3324E-13  3.9672E-13 -3.0142E-14  7.1375E-12
  4.6635E-14 -1.3324E-13  1.2160E-13 -1.3578E-13  5.6331E-15 -1.4016E-12
 -1.3832E-13  3.9672E-13 -1.3578E-13  3.1308E-13 -1.5671E-14  4.1737E-12
  7.1062E-14 -3.0142E-14  5.6331E-15 -1.5671E-14  1.2598E-13 -2.6860E-13
 -2.4821E-12  7.1375E-12 -1.4016E-12  4.1737E-12 -2.6860E-13  7.5096E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.877534 -150.223217    0.789174    0.029929   -0.593576  2456714.072068
# Heliocentric elements and errors
Epoch:              2456710.5000  =  2014/02/22
Mean Anomaly:          343.77991 +/-     0.030
Argument of Peri:       34.86968 +/-     0.055
Long of Asc Node:      201.96066 +/-     0.000
Inclination:            24.16182 +/-     0.000
Eccentricity:         0.25781435 +/-    0.0001
Semi-Major Axis:     39.47555318 +/-    0.0028
Time of Perihelion: 2460792.2047 +/-       7.6
Perihelion:          29.29818894 +/-    0.0033
Aphelion:            49.65291742 +/-    0.0044
Period (y)              248.0279 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.40574036 +/-    0.0003
Ecliptic Y          -14.19699878 +/-    0.0001
Ecliptic Z            1.47681402 +/-    0.0000
Ecliptic XDOT         0.00186765 +/-    0.0000
Ecliptic YDOT        -0.00260409 +/-    0.0000
Ecliptic ZDOT         0.00139681 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.01664335 +/-    0.0002
Geocenter to KBO     29.41253455 +/-    0.0003
# Hcoef:  7.47

The following table shows the complete astrometric record for 14DP143. 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 (14DP143) followed by the observatory code and reference code for the source of the astrometry.

2014 02  25.57129  13 54 53.341  -08 41 55.05  22.2w 14DP143   F51  C~1vXI      
2014 02  25.59651  13 54 53.269  -08 41 54.38  22.3w 14DP143   F51  C~1vXI      
2014 02  25.60909  13 54 53.224  -08 41 53.67  22.5w 14DP143   F51  C~1vXI      
2014 04  04.44976  13 52 03.486  -08 17 06.93  22.1w 14DP143   F51  C~1vXI      
2014 04  04.46113  13 52 03.427  -08 17 06.35  22.3w 14DP143   F51  C~1vXI      
2014 04  04.47249  13 52 03.358  -08 17 05.72  22.2w 14DP143   F51  C~1vXI      
2014 04  04.48384  13 52 03.262  -08 17 05.13  22.5w 14DP143   F51  C~1vXI      
2014 04  28.44007  13 49 41.047  -07 59 21.80  22.1w 14DP143   F51  C~1vXI      
2014 04  28.45301  13 49 40.967  -07 59 21.59  22.2w 14DP143   F51  C~1vXI      
2014 04  28.46590  13 49 40.899  -07 59 20.97  22.2w 14DP143   F51  C~1vXI      
2014 06  29.27570  13 45 33.583  -07 29 25.70  22.5w 14DP143   F51  C~1vXI      
2014 06  29.28680  13 45 33.572  -07 29 25.80  22.9w 14DP143   F51  C~1vXI      
2014 06  29.29790  13 45 33.556  -07 29 25.58  22.3w 14DP143   F51  C~1vXI      
2014 06  29.30899  13 45 33.550  -07 29 25.58  22.7w 14DP143   F51  C~1vXI      
2015 01  26.60938  14 05 15.512  -08 43 30.46  22.4w 14DP143   F51  C~1vXI      
2015 01  26.62136  14 05 15.532  -08 43 30.33  22.6w 14DP143   F51  C~1vXI      
2015 01  26.63331  14 05 15.540  -08 43 29.96  22.4w 14DP143   F51  C~1vXI      
2015 01  26.64531  14 05 15.552  -08 43 30.06  22.7w 14DP143   F51  C~1vXI      
2015 01  30.58137  14 05 19.762  -08 42 39.07  22.5w 14DP143   F51  C~1vXI      
2015 01  30.59348  14 05 19.772  -08 42 39.01  22.6w 14DP143   F51  C~1vXI      
2015 01  30.60554  14 05 19.784  -08 42 38.73  22.2w 14DP143   F51  C~1vXI      
2015 02  24.58154  14 04 59.665  -08 33 09.22  22.1w 14DP143   F51  C~1vXI      
2015 02  24.59456  14 04 59.655  -08 33 08.69  22.3w 14DP143   F51  C~1vXI      
2015 02  24.60757  14 04 59.608  -08 33 08.49  22.4w 14DP143   F51  C~1vXI      
2015 02  24.62062  14 04 59.557  -08 33 07.89  22.4w 14DP143   F51  C~1vXI      
2017 05  02.32316  14 20 00.88   -07 26 00.3   21.7R 14DP143   G37  C~2Fa8      
2017 05  02.39060  14 20 00.47   -07 25 57.6         14DP143   G37  C~2Fa8      

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     0.14       0.00    -0.13
  2   0.0001     -1.23     0.20       0.25    -0.23
  3   0.0001     -2.11    -0.03       0.69     0.02
  4   0.1037  -2881.61     0.07     511.65    -0.12
  5   0.1037  -2882.64     0.15     511.89    -0.01
  6   0.1038  -2883.82     0.07     512.12     0.09
  7   0.1038  -2885.36    -0.38     512.17     0.02
  8   0.1694  -5237.11    -0.04     765.05     0.19
  9   0.1694  -5238.30     0.06     764.82    -0.14
 10   0.1695  -5239.47     0.17     765.05    -0.03
 11   0.3387  -9317.97    -0.12    1145.49     0.12
 12   0.3387  -9318.09    -0.02    1145.34    -0.06
 13   0.3387  -9318.39    -0.10    1145.46     0.02
 14   0.3388  -9318.47     0.04    1145.43    -0.05
 15   0.9173   8693.69    -0.07    3104.94     0.10
 16   0.9173   8693.93     0.00    3105.17     0.12
 17   0.9173   8693.91    -0.17    3105.56     0.30
 18   0.9174   8694.12    -0.12    3105.52     0.07
 19   0.9282   8735.37    -0.18    3174.92    -0.05
 20   0.9282   8735.49    -0.12    3175.02    -0.15
 21   0.9282   8735.56    -0.11    3175.35    -0.03
 22   0.9966   8259.26     0.07    3608.32    -0.05
 23   0.9966   8258.94     0.34    3608.77     0.19
 24   0.9967   8258.21     0.20    3608.72    -0.07
 25   0.9967   8257.29    -0.13    3609.02     0.02
 26   3.1807  19562.80    -0.02   11983.10    -0.06
 27   3.1809  19556.08     0.10   11983.59    -0.07

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.

14DP143    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.228    39.240    39.216
ecceobj         0.254     0.254     0.254
incobj         24.223    24.223    24.223
qmin           26.351    26.351    26.329
qmax           53.103    53.070    53.196
amean          39.454    39.454    39.454
amin           39.006    38.999    38.995
amax           39.979    39.961    39.977
emean           0.269     0.269     0.268
emin            0.179     0.179     0.177
emax            0.331     0.330     0.332
imean          23.984    23.986    24.030
imin           21.694    21.702    21.677
imax           26.855    26.846    26.892
excite_mean     0.490     0.490     0.490
fracstop        1.000     1.000     1.000
cjmean          2.774     2.775     2.774

libcent 0       180.5     180.3     181.2
libamp  0        83.4      83.5      85.2
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        87.1      87.1      87.0
kozaiamp         57.7      57.5      58.1