Orbit Fit and Astrometric record for 14XP40

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: 14XP40    
# Created Wed Dec 13 02:38:08 2017
# Orbit generated from Bernstein formalism
# Fitting   14 observations of   14
# Arc:  82.84d
# First observation: 2014/12/01
#  Last observation: 2015/02/22
Preliminary a, adot, b, bdot, g, gdot:
   0.000002   0.051264   0.000005  -0.001228   0.034688   0.000000
# Chi-squared of fit:     5.05 DOF:   22 RMS:  0.11
# Min/Max residuals:    -0.24    0.27
# Exact a, adot, b, bdot, g, gdot:
  2.346388E-05  4.854861E-02 -1.986742E-06 -1.415558E-03  3.323203E-02 -1.111831E-02
# Covariance matrix:
  2.9173E-13 -2.2543E-12  1.5465E-15 -3.7461E-13  8.3320E-15  5.4668E-11
 -2.2543E-12  1.4056E-09  4.3906E-12  1.9935E-10  5.9133E-10  4.9379E-08
  1.5465E-15  4.3906E-12  2.9339E-13 -8.0565E-13  1.9925E-12  1.8455E-10
 -3.7461E-13  1.9935E-10 -8.0565E-13  4.3363E-11  7.7115E-11  5.4237E-09
  8.3320E-15  5.9133E-10  1.9925E-12  7.7115E-11  2.6235E-10  2.3527E-08
  5.4668E-11  4.9379E-08  1.8455E-10  5.4237E-09  2.3527E-08  2.3233E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
  -11.332645  160.286599    0.985836    0.004768    0.022952  2456993.085958
# Heliocentric elements and errors
Epoch:              2456990.5000  =  2014/11/29
Mean Anomaly:          356.29076 +/-     0.545
Argument of Peri:      294.69664 +/-     3.323
Long of Asc Node:      258.70164 +/-     0.050
Inclination:            11.51610 +/-     0.002
Eccentricity:         0.73937416 +/-    0.0262
Semi-Major Axis:    106.65571287 +/-    8.9588
Time of Perihelion: 2461135.8132 +/-     313.9
Perihelion:          27.79723507 +/-    3.6432
Aphelion:           185.51419067 +/-   15.8318
Period (y)             1101.4997 +/-    138.79
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.42386533 +/-    0.0135
Ecliptic Y           10.87290131 +/-    0.0049
Ecliptic Z           -5.91320455 +/-    0.0029
Ecliptic XDOT        -0.00048627 +/-    0.0001
Ecliptic YDOT        -0.00408104 +/-    0.0000
Ecliptic ZDOT         0.00006575 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.08744523 +/-    0.0125
Geocenter to KBO     30.09144746 +/-    0.0147
# Hcoef:  7.00

The following table shows the complete astrometric record for 14XP40. 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 (14XP40) followed by the observatory code and reference code for the source of the astrometry.

2014 12  01.58518  10 30 09.190  -02 47 35.13  22.3w 14XP40    F51  C~1vXw      
2014 12  01.59707  10 30 09.206  -02 47 35.89  21.8w 14XP40    F51  C~1vXw      
2014 12  01.61151  10 30 09.200  -02 47 36.45  22.2w 14XP40    F51  C~1vXw      
2014 12  01.62341  10 30 09.230  -02 47 36.52  21.9w 14XP40    F51  C~1vXw      
2014 12  01.63637  10 30 09.250  -02 47 37.31  21.9w 14XP40    F51  C~1vXw      
2015 01  26.45342  10 28 08.853  -02 57 02.52  21.9w 14XP40    F51  C~1vXw      
2015 01  26.46481  10 28 08.796  -02 57 02.48  21.8w 14XP40    F51  C~1vXw      
2015 01  26.47617  10 28 08.733  -02 57 02.30  21.9w 14XP40    F51  C~1vXw      
2015 02  20.43644  10 25 50.065  -02 47 36.81  22.0w 14XP40    F51  C~1vXw      
2015 02  20.44914  10 25 49.983  -02 47 36.31  21.8w 14XP40    F51  C~1vXw      
2015 02  20.46183  10 25 49.910  -02 47 35.99  21.9w 14XP40    F51  C~1vXw      
2015 02  22.39787  10 25 38.416  -02 46 35.87  21.6w 14XP40    F51  C~1vXw      
2015 02  22.41079  10 25 38.332  -02 46 35.58  21.6w 14XP40    F51  C~1vXw      
2015 02  22.42404  10 25 38.256  -02 46 34.94  21.9w 14XP40    F51  C~1vXw      

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    -0.07       0.00     0.27
  2   0.0000      0.51     0.11      -0.61    -0.05
  3   0.0001      0.63    -0.16      -1.17    -0.24
  4   0.0001      1.08    -0.04      -1.06     0.16
  5   0.0001      1.65     0.18      -1.68    -0.14
  6   0.1530  -1458.35    -0.01   -1202.24     0.07
  7   0.1530  -1459.16     0.04   -1202.52    -0.03
  8   0.1530  -1460.10    -0.05   -1202.71    -0.04
  9   0.2214  -3598.22     0.09   -1458.88    -0.05
 10   0.2214  -3599.54    -0.02   -1458.88     0.02
 11   0.2214  -3600.68     0.05   -1458.99    -0.02
 12   0.2267  -3782.92    -0.00   -1468.00     0.03
 13   0.2268  -3784.19    -0.04   -1468.21    -0.11
 14   0.2268  -3785.49    -0.06   -1468.04     0.13

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.

14XP40    quality flag:1

Type:       CENTAURR  CENTAURR  CENTAURS

axisobj       103.510   124.174    95.523
ecceobj         0.731     0.786     0.699
incobj         11.504    11.509    11.500
qmin           27.057    25.705    27.861
qmax          217.114   229.151   169.142
amean         105.316   122.575    95.701
amin           98.985   114.126    93.765
amax          122.953   128.038    98.902
emean           0.732     0.782     0.700
emin            0.715     0.764     0.691
emax            0.769     0.793     0.710
imean          14.151    13.771    12.781
imin           12.859    12.851    12.422
imax           15.375    14.452    13.035
excite_mean     0.772     0.817     0.734
fracstop        0.093     0.052     1.000
cjmean          2.751     2.687     2.797

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       314.5     311.4     155.7
kozaiamp         19.6       7.8     180.0