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 Mon Feb 19 02:38:07 2018
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:   0.98y
# First observation: 2014/03/02
#  Last observation: 2015/02/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000053   0.050039   0.000023  -0.002163   0.031979   0.000000
# Chi-squared of fit:    12.33 DOF:   44 RMS:  0.12
# Min/Max residuals:    -0.33    0.24
# Exact a, adot, b, bdot, g, gdot:
  2.274568E-05  4.877615E-02  3.375326E-07 -2.228360E-03  3.401233E-02 -1.327466E-02
# Covariance matrix:
  1.3357E-13  7.6732E-14  8.8641E-16 -5.1754E-15  4.5370E-14  4.1611E-12
  7.6732E-14  9.4235E-11  2.7211E-13 -2.7485E-12  2.8978E-11  1.8237E-09
  8.8641E-16  2.7211E-13  1.3309E-13 -1.5576E-13  7.6840E-14  5.2219E-12
 -5.1754E-15 -2.7485E-12 -1.5576E-13  3.8178E-13 -8.9043E-13 -5.3726E-11
  4.5370E-14  2.8978E-11  7.6840E-14 -8.9043E-13  9.6663E-12  5.6884E-10
  4.1611E-12  1.8237E-09  5.2219E-12 -5.3726E-11  5.6884E-10  3.5460E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
  -11.628519  156.104963   -0.088692   -0.198422   -0.964920  2456718.534218
# Heliocentric elements and errors
Epoch:              2456710.5000  =  2014/02/22
Mean Anomaly:          355.93642 +/-     0.074
Argument of Peri:      293.57972 +/-     0.407
Long of Asc Node:      258.70064 +/-     0.007
Inclination:            11.51593 +/-     0.000
Eccentricity:         0.72913339 +/-    0.0035
Semi-Major Axis:    103.20247416 +/-    1.1084
Time of Perihelion: 2461033.0442 +/-      37.3
Perihelion:          27.95410447 +/-    0.4663
Aphelion:           178.45084386 +/-    1.9495
Period (y)             1048.4395 +/-     16.89
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.26758575 +/-    0.0024
Ecliptic Y           11.98429045 +/-    0.0011
Ecliptic Z           -5.92628011 +/-    0.0005
Ecliptic XDOT        -0.00060616 +/-    0.0000
Ecliptic YDOT        -0.00403132 +/-    0.0000
Ecliptic ZDOT         0.00003982 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.36882030 +/-    0.0022
Geocenter to KBO     29.40109894 +/-    0.0027
# 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 03  02.03344  10 14 28.36   -01 33 13.6   23.0g 14XP40    W84  C~2TKm      
2014 03  02.12401  10 14 27.84   -01 33 10.1   22.5g 14XP40    W84  C~2TKm      
2014 03  02.21625  10 14 27.28   -01 33 07.2   22.7g 14XP40    W84  C~2TKm      
2014 03  02.30957  10 14 26.74   -01 33 03.8   22.4g 14XP40    W84  C~2TKm      
2014 03  03.02306  10 14 22.61   -01 32 38.8   21.4g 14XP40    W84  C~2TKm      
2014 03  03.11495  10 14 22.07   -01 32 35.6   21.3g 14XP40    W84  C~2TKm      
2014 03  03.20626  10 14 21.55   -01 32 32.5   20.0g 14XP40    W84  C~2TKm      
2014 03  04.02396  10 14 16.83   -01 32 03.5   23.2g 14XP40    W84  C~2TKm      
2014 03  04.11633  10 14 16.29   -01 32 00.4   21.2g 14XP40    W84  C~2TKm      
2014 03  04.20876  10 14 15.75   -01 31 56.9   21.1g 14XP40    W84  C~2TKm      
2014 03  04.30071  10 14 15.22   -01 31 53.8   21.3g 14XP40    W84  C~2TKm      
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    -0.01       0.00    -0.28
  2   0.0002     -8.54     0.06       0.42     0.13
  3   0.0005    -17.41    -0.02       0.07    -0.22
  4   0.0008    -26.19     0.09       0.29    -0.02
  5   0.0027    -92.97    -0.16       1.05    -0.00
  6   0.0030   -101.68    -0.15       1.08    -0.02
  7   0.0032   -110.07     0.15       1.13    -0.01
  8   0.0054   -186.54    -0.07       2.39     0.15
  9   0.0057   -195.21     0.00       2.34     0.00
 10   0.0060   -204.03    -0.04       2.65     0.24
 11   0.0062   -212.56     0.14       2.65     0.14
 12   0.7517  14785.28    -0.08     959.08     0.18
 13   0.7517  14785.78     0.09     958.46    -0.14
 14   0.7518  14785.90    -0.18     957.90    -0.33
 15   0.7518  14786.35    -0.05     958.00     0.07
 16   0.7518  14786.91     0.16     957.37    -0.23
 17   0.9046  13302.61     0.10    -224.50     0.10
 18   0.9047  13301.80     0.14    -224.77    -0.01
 19   0.9047  13300.85     0.06    -224.95    -0.02
 20   0.9730  11152.06     0.06    -449.78    -0.01
 21   0.9731  11150.73    -0.05    -449.76     0.07
 22   0.9731  11149.59     0.02    -449.85     0.02
 23   0.9784  10966.78    -0.05    -456.16     0.08
 24   0.9784  10965.49    -0.09    -456.35    -0.06
 25   0.9785  10964.20    -0.11    -456.17     0.17

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:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj       100.815   102.808    99.010
ecceobj         0.722     0.729     0.716
incobj         11.505    11.504    11.506
qmin           27.287    27.090    27.303
qmax          179.927   189.642   178.190
amean          99.969   103.234    99.082
amin           97.027    99.502    95.055
amax          104.072   109.056   103.398
emean           0.717     0.727     0.714
emin            0.705     0.714     0.697
emax            0.733     0.740     0.725
imean          14.352    14.172    13.768
imin           12.907    12.854    12.832
imax           14.877    15.045    15.540
excite_mean     0.759     0.767     0.753
fracstop        0.117     0.097     0.092
cjmean          2.758     2.753     2.767

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       317.6     314.3     312.8
kozaiamp         21.2      17.8      21.3