Orbit Fit and Astrometric record for 14XO40

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: 14XO40    
# Created Mon May 21 01:38:22 2018
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   26
# Arc:   3.33y
# First observation: 2014/12/10
#  Last observation: 2018/04/10
Preliminary a, adot, b, bdot, g, gdot:
  -0.000541   0.075137  -0.000354   0.027827   0.048692   0.000000
# Chi-squared of fit:    12.23 DOF:   44 RMS:  0.12
# Min/Max residuals:    -0.35    0.36
# Exact a, adot, b, bdot, g, gdot:
  2.246327E-05  6.498818E-02  8.395085E-06  2.395069E-02  4.512870E-02 -3.328720E-02
# Covariance matrix:
  1.6568E-13 -1.0101E-13  2.4820E-14 -2.8257E-14  8.9677E-14 -4.3932E-13
 -1.0101E-13  9.1416E-13 -4.6387E-14  3.4996E-13  1.9570E-13  4.8093E-12
  2.4820E-14 -4.6387E-14  8.6802E-14 -5.2445E-14  1.6851E-14 -2.7324E-13
 -2.8257E-14  3.4996E-13 -5.2445E-14  1.8229E-13  7.6993E-14  1.9304E-12
  8.9677E-14  1.9570E-13  1.6851E-14  7.6993E-14  1.7847E-13  9.9261E-13
 -4.3932E-13  4.8093E-12 -2.7324E-13  1.9304E-12  9.9261E-13  2.6571E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -18.518039  173.243748    0.980462    0.028126    0.083475  2457002.139458
# Heliocentric elements and errors
Epoch:              2457000.5000  =  2014/12/09
Mean Anomaly:          350.63938 +/-     0.003
Argument of Peri:       23.59222 +/-     0.005
Long of Asc Node:      212.08187 +/-     0.000
Inclination:            26.87436 +/-     0.000
Eccentricity:         0.72508477 +/-    0.0001
Semi-Major Axis:     59.04927045 +/-    0.0141
Time of Perihelion: 2461309.9546 +/-       0.1
Perihelion:          16.23354383 +/-    0.0061
Aphelion:           101.86499708 +/-    0.0247
Period (y)              453.7640 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.66568217 +/-    0.0002
Ecliptic Y            3.43568787 +/-    0.0000
Ecliptic Z           -7.03756751 +/-    0.0001
Ecliptic XDOT         0.00097536 +/-    0.0000
Ecliptic YDOT        -0.00409139 +/-    0.0000
Ecliptic ZDOT         0.00201928 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   22.09981283 +/-    0.0002
Geocenter to KBO     22.15884679 +/-    0.0002
# Hcoef:  8.03

The following table shows the complete astrometric record for 14XO40. 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 (14XO40) followed by the observatory code and reference code for the source of the astrometry.

2014 12  10.63868  11 05 23.888  -14 18 04.77  21.1i 14XO40    F51  C~1vXv      
2014 12  10.63934  11 05 23.886  -14 18 04.74  21.1i 14XO40    F51  C~1vXv      
2014 12  10.64264  11 05 23.882  -14 18 05.01  21.2i 14XO40    F51  C~1vXv      
2014 12  10.64330  11 05 23.893  -14 18 05.08  21.0i 14XO40    F51  C~1vXv      
2014 12  10.64673  11 05 23.899  -14 18 05.07  21.0i 14XO40    F51  C~1vXv      
2014 12  10.64740  11 05 23.894  -14 18 05.30  21.0i 14XO40    F51  C~1vXv      
2014 12  10.65071  11 05 23.905  -14 18 05.64  21.2i 14XO40    F51  C~1vXv      
2014 12  10.65136  11 05 23.909  -14 18 05.43  21.0i 14XO40    F51  C~1vXv      
2015 03  22.35732  10 57 07.722  -13 58 25.99  21.2w 14XO40    F51  C~1vXv      
2015 03  22.36788  10 57 07.642  -13 58 25.19  21.2w 14XO40    F51  C~1vXv      
2015 03  22.37845  10 57 07.559  -13 58 24.38  21.3w 14XO40    F51  C~1vXv      
2015 03  22.38899  10 57 07.475  -13 58 23.61  21.3w 14XO40    F51  C~1vXv      
2015 03  23.38599  10 57 00.015  -13 57 10.53  21.1w 14XO40    F51  C~1vXv      
2015 03  23.39662  10 56 59.934  -13 57 09.72  21.2w 14XO40    F51  C~1vXv      
2015 03  23.40720  10 56 59.853  -13 57 08.91  21.2w 14XO40    F51  C~1vXv      
2015 03  23.41782  10 56 59.773  -13 57 08.09  21.3w 14XO40    F51  C~1vXv      
2015 04  23.30520  10 53 54.668  -13 16 24.43  21.4r 14XO40    F51  C~1vXv      
2015 04  23.31814  10 53 54.628  -13 16 23.16  21.6r 14XO40    F51  C~1vXv      
2015 04  23.33071  10 53 54.566  -13 16 22.38  21.2r 14XO40    F51  C~1vXv      
2015 04  23.34325  10 53 54.520  -13 16 21.45  21.3r 14XO40    F51  C~1vXv      
2017 02  24.66256  11 37 23.01   -14 54 06.3   19.7R 14XO40    Q62  C~29EW      
2017 02  24.68963  11 37 22.83   -14 54 04.6         14XO40    Q62  C~29EW      
2017 02  27.65428  11 36 59.52   -14 51 41.3   19.8R 14XO40    Q62  C~29EW      
2017 02  27.67413  11 36 59.35   -14 51 40.2         14XO40    Q62  C~29EW      
2018 04  10.17534  11 52 00.705  -14 10 30.62  20.5R 14XO40    G37  C~2bHH      
2018 04  10.22773  11 52 00.285  -14 10 26.35        14XO40    G37  C~2bHH      

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     0.06       0.00    -0.00
  2   0.0000     -0.04    -0.01       0.02     0.04
  3   0.0000      0.02    -0.11      -0.25    -0.10
  4   0.0000      0.19     0.04      -0.25    -0.07
  5   0.0000      0.27    -0.05      -0.21     0.10
  6   0.0000      0.30    -0.06      -0.45    -0.11
  7   0.0000      0.58     0.07      -0.69    -0.23
  8   0.0000      0.55     0.01      -0.48     0.02
  9   0.2785  -7065.32     0.01   -1897.69    -0.02
 10   0.2785  -7066.71     0.01   -1897.44     0.01
 11   0.2785  -7068.15    -0.03   -1897.21     0.04
 12   0.2786  -7069.59    -0.07   -1897.02     0.02
 13   0.2813  -7198.89    -0.04   -1875.70    -0.03
 14   0.2813  -7200.30    -0.05   -1875.46    -0.00
 15   0.2814  -7201.71    -0.07   -1875.21     0.02
 16   0.2814  -7203.11    -0.07   -1874.95     0.06
 17   0.3660 -10681.60    -0.05    -779.25     0.05
 18   0.3660 -10682.67     0.05    -778.34     0.36
 19   0.3660 -10683.82     0.04    -778.01     0.10
 20   0.3661 -10684.82     0.18    -777.45     0.08
 21   2.2095  26640.25     0.04    8974.75    -0.11
 22   2.2096  26637.14 (   0.35)   8975.34 (   0.49)
 23   2.2177  26263.77     0.23    8980.32    -0.35
 24   2.2178  26261.03     0.07    8980.41    -0.32
 25   3.3307  37849.30    -0.07   16266.88     0.33
 26   3.3308  37841.81    -0.14   16268.64     0.10

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.

14XO40    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        57.979    57.998    57.961
ecceobj         0.720     0.720     0.720
incobj         26.897    26.897    26.897
qmin           15.943    15.970    16.000
qmax          102.385   101.898   103.196
amean          57.646    56.217    58.104
amin           56.051    53.319    57.044
amax           59.458    59.452    60.225
emean           0.711     0.691     0.714
emin            0.696     0.645     0.703
emax            0.725     0.725     0.725
imean          28.623    30.435    28.400
imin           27.192    27.183    27.132
imax           30.306    34.218    29.765
excite_mean     0.858     0.857     0.858
fracstop        0.047     0.121     0.047
cjmean          2.237     2.236     2.237

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        34.3      59.3      35.4
kozaiamp         10.1      32.6      10.7