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 Sun Oct 22 01:38:32 2017
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   24
# Arc:   2.22y
# First observation: 2014/12/10
#  Last observation: 2017/02/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000034   0.073532  -0.000093   0.026949   0.048768   0.000000
# Chi-squared of fit:     4.37 DOF:   40 RMS:  0.08
# Min/Max residuals:    -0.20    0.20
# Exact a, adot, b, bdot, g, gdot:
  2.237431E-05  6.500709E-02  8.250511E-06  2.395684E-02  4.513431E-02 -3.315246E-02
# Covariance matrix:
  1.7226E-13  4.2849E-13  1.2677E-14  1.7828E-13  2.5661E-13  3.4295E-12
  4.2849E-13  1.5010E-10 -2.2688E-12  5.3470E-11  4.5754E-11  1.0785E-09
  1.2677E-14 -2.2688E-12  1.2376E-13 -8.6005E-13 -6.6655E-13 -1.6320E-11
  1.7828E-13  5.3470E-11 -8.6005E-13  1.9165E-11  1.6318E-11  3.8445E-10
  2.5661E-13  4.5754E-11 -6.6655E-13  1.6318E-11  1.4097E-11  3.2894E-10
  3.4295E-12  1.0785E-09 -1.6320E-11  3.8445E-10  3.2894E-10  7.7547E-09
#      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:          350.55040 +/-     0.058
Argument of Peri:       23.48128 +/-     0.072
Long of Asc Node:      212.08539 +/-     0.002
Inclination:            26.87262 +/-     0.001
Eccentricity:         0.72294530 +/-    0.0014
Semi-Major Axis:     58.68059492 +/-    0.2401
Time of Perihelion: 2461310.2426 +/-       0.2
Perihelion:          16.25773447 +/-    0.1058
Aphelion:           101.10345536 +/-    0.4219
Period (y)              449.5210 +/-      2.76
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.66308885 +/-    0.0017
Ecliptic Y            3.43538269 +/-    0.0002
Ecliptic Z           -7.03669630 +/-    0.0006
Ecliptic XDOT         0.00096729 +/-    0.0000
Ecliptic YDOT        -0.00409110 +/-    0.0000
Ecliptic ZDOT         0.00201679 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   22.09706292 +/-    0.0016
Geocenter to KBO     22.15609408 +/-    0.0018
# Hcoef:  8.04

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      

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     0.08       0.00     0.03
  2   0.0000     -0.04     0.01       0.02     0.07
  3   0.0000      0.02    -0.09      -0.25    -0.07
  4   0.0000      0.19     0.05      -0.25    -0.04
  5   0.0000      0.27    -0.03      -0.21     0.13
  6   0.0000      0.30    -0.04      -0.45    -0.08
  7   0.0000      0.58     0.09      -0.69    -0.20
  8   0.0000      0.55     0.03      -0.48     0.05
  9   0.2785  -7065.32     0.01   -1897.69    -0.01
 10   0.2785  -7066.71     0.01   -1897.44     0.02
 11   0.2785  -7068.15    -0.03   -1897.21     0.05
 12   0.2786  -7069.59    -0.07   -1897.02     0.03
 13   0.2813  -7198.89    -0.03   -1875.70    -0.02
 14   0.2813  -7200.30    -0.04   -1875.46     0.00
 15   0.2814  -7201.71    -0.06   -1875.21     0.03
 16   0.2814  -7203.11    -0.06   -1874.95     0.07
 17   0.3660 -10681.60    -0.07    -779.25    -0.11
 18   0.3660 -10682.67     0.04    -778.34     0.20
 19   0.3660 -10683.82     0.03    -778.01    -0.06
 20   0.3661 -10684.82     0.16    -777.45    -0.08
 21   2.2095  26640.25    -0.02    8974.75     0.14
 22   2.2096  26637.14 (   0.28)   8975.34 (   0.74)
 23   2.2177  26263.77     0.10    8980.32    -0.10
 24   2.2178  26261.03    -0.06    8980.41    -0.06

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        57.625    57.933    57.325
ecceobj         0.718     0.721     0.716
incobj         26.895    26.899    26.892
qmin           16.010    15.965    16.031
qmax          106.644   114.441   106.758
amean          59.991    61.941    59.625
amin           57.535    57.135    57.314
amax           62.683    66.956    61.800
emean           0.705     0.715     0.708
emin            0.668     0.695     0.681
emax            0.733     0.733     0.733
imean          30.930    30.828    30.132
imin           27.156    27.165    27.133
imax           35.031    34.353    33.603
excite_mean     0.873     0.880     0.868
fracstop        0.146     0.153     0.126
cjmean          2.214     2.203     2.220

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        57.6      57.8      55.8
kozaiamp         31.0      29.4      30.0