Orbit Fit and Astrometric record for 14XT40

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: 14XT40    
# Created Thu Dec 14 02:38:08 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   4.28y
# First observation: 2010/10/08
#  Last observation: 2015/01/17
Preliminary a, adot, b, bdot, g, gdot:
   0.000466   0.039119  -0.000012  -0.004948   0.034270   0.000000
# Chi-squared of fit:    12.09 DOF:   60 RMS:  0.11
# Min/Max residuals:    -0.31    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.869571E-05  3.889088E-02 -2.310617E-06 -5.003046E-03  3.227288E-02  8.798083E-04
# Covariance matrix:
  2.1068E-13 -1.1928E-13 -7.1508E-15  1.3890E-14  3.1825E-14 -6.4087E-13
 -1.1928E-13  2.7534E-13  1.7651E-14 -3.4201E-14  2.1729E-13  1.5578E-12
 -7.1508E-15  1.7651E-14  1.6469E-13 -4.9692E-14  7.4399E-15  1.2344E-13
  1.3890E-14 -3.4201E-14 -4.9692E-14  2.3894E-14 -1.4297E-14 -2.3944E-13
  3.1825E-14  2.1729E-13  7.4399E-15 -1.4297E-14  5.0408E-13  6.2299E-13
 -6.4087E-13  1.5578E-12  1.2344E-13 -2.3944E-13  6.2299E-13  1.0968E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.405698   41.561569    0.445350    0.006283   -0.890321  2455477.899706
# Heliocentric elements and errors
Epoch:              2455470.5000  =  2010/10/01
Mean Anomaly:            2.21837 +/-     0.019
Argument of Peri:      173.49433 +/-     0.029
Long of Asc Node:      223.82391 +/-     0.000
Inclination:             7.32396 +/-     0.000
Eccentricity:         0.19641435 +/-    0.0001
Semi-Major Axis:     39.66259270 +/-    0.0040
Time of Perihelion: 2454908.2857 +/-       4.8
Perihelion:          31.87229037 +/-    0.0042
Aphelion:            47.45289503 +/-    0.0055
Period (y)              249.7928 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.14978216 +/-    0.0005
Ecliptic Y           20.81284069 +/-    0.0005
Ecliptic Z            0.21933436 +/-    0.0000
Ecliptic XDOT        -0.00213059 +/-    0.0000
Ecliptic YDOT         0.00252654 +/-    0.0000
Ecliptic ZDOT        -0.00042390 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.88156871 +/-    0.0005
Geocenter to KBO     30.98577106 +/-    0.0007
# Hcoef:  7.10

The following table shows the complete astrometric record for 14XT40. 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 (14XT40) followed by the observatory code and reference code for the source of the astrometry.

2010 10  08.39894  02 35 59.423  +15 41 13.82  22.5w 14XT40    F51  C~1vXw      
2010 10  08.41709  02 35 59.310  +15 41 13.42  22.4w 14XT40    F51  C~1vXw      
2010 10  08.43533  02 35 59.224  +15 41 12.83  22.2w 14XT40    F51  C~1vXw      
2010 10  08.45440  02 35 59.108  +15 41 12.36  22.3w 14XT40    F51  C~1vXw      
2010 11  03.44841  02 33 27.557  +15 28 04.29  21.9w 14XT40    F51  C~1vXw      
2010 11  03.47391  02 33 27.400  +15 28 03.40  22.0w 14XT40    F51  C~1vXw      
2010 11  03.48655  02 33 27.327  +15 28 03.03  22.1w 14XT40    F51  C~1vXw      
2012 10  18.39620  02 53 28.025  +16 23 42.86  22.1w 14XT40    F51  C~1vXw      
2012 10  18.41134  02 53 27.948  +16 23 42.50  22.2w 14XT40    F51  C~1vXw      
2012 10  18.42651  02 53 27.853  +16 23 41.87  22.2w 14XT40    F51  C~1vXw      
2012 10  18.44177  02 53 27.757  +16 23 41.55  21.9w 14XT40    F51  C~1vXw      
2012 12  07.23645  02 48 34.982  +15 59 48.95  22.3w 14XT40    F51  C~1vXw      
2012 12  07.25146  02 48 34.920  +15 59 48.72  22.1w 14XT40    F51  C~1vXw      
2012 12  07.26642  02 48 34.849  +15 59 48.26  22.2w 14XT40    F51  C~1vXw      
2012 12  07.28150  02 48 34.769  +15 59 47.63  22.2w 14XT40    F51  C~1vXw      
2013 03  03.23994  02 48 02.689  +15 53 54.68  22.0w 14XT40    F51  C~1vXw      
2013 03  03.24390  02 48 02.708  +15 53 54.76  22.2w 14XT40    F51  C~1vXw      
2013 03  03.24786  02 48 02.731  +15 53 54.82  22.3w 14XT40    F51  C~1vXw      
2013 11  24.29476  02 59 01.419  +16 27 50.62  22.0w 14XT40    F51  C~1vXw      
2013 11  24.30805  02 59 01.338  +16 27 50.26  22.0w 14XT40    F51  C~1vXw      
2013 11  24.32135  02 59 01.265  +16 27 49.98  22.1w 14XT40    F51  C~1vXw      
2013 11  24.33469  02 59 01.185  +16 27 49.57  22.0w 14XT40    F51  C~1vXw      
2014 12  10.44324  03 06 45.683  +16 41 35.49  21.4i 14XT40    F51  C~1vXw      
2014 12  10.45542  03 06 45.613  +16 41 35.39  21.5i 14XT40    F51  C~1vXw      
2014 12  10.46754  03 06 45.536  +16 41 34.87  21.6i 14XT40    F51  C~1vXw      
2015 01  12.29333  03 04 41.830  +16 32 12.10  22.5w 14XT40    F51  C~1vXw      
2015 01  12.30572  03 04 41.811  +16 32 11.57  22.5w 14XT40    F51  C~1vXw      
2015 01  12.31826  03 04 41.778  +16 32 11.67  22.6w 14XT40    F51  C~1vXw      
2015 01  12.33090  03 04 41.754  +16 32 11.37  22.4w 14XT40    F51  C~1vXw      
2015 01  17.29735  03 04 33.294  +16 31 30.05  22.2w 14XT40    F51  C~1vXw      
2015 01  17.31112  03 04 33.273  +16 31 29.70  22.1w 14XT40    F51  C~1vXw      
2015 01  17.32491  03 04 33.251  +16 31 29.67  22.1w 14XT40    F51  C~1vXw      
2015 01  17.33876  03 04 33.230  +16 31 29.54  22.2w 14XT40    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    -0.03
  2   0.0000     -1.68    -0.10       0.12     0.13
  3   0.0001     -3.04     0.04      -0.05    -0.02
  4   0.0002     -4.78    -0.12       0.02     0.09
  5   0.0713  -2331.11     0.03     -69.02    -0.04
  6   0.0714  -2333.54     0.02     -69.16    -0.12
  7   0.0714  -2334.66     0.11     -69.18    -0.11
  8   2.0287  15214.45    -0.03   -2094.17     0.08
  9   2.0288  15213.27     0.13   -2094.20     0.09
 10   2.0288  15211.78    -0.03   -2094.40    -0.09
 11   2.0289  15210.35    -0.10   -2094.31     0.04
 12   2.1652  10740.53    -0.28   -2232.04     0.03
 13   2.1652  10739.61    -0.02   -2232.00     0.10
 14   2.1653  10738.49     0.04   -2232.14    -0.01
 15   2.1653  10737.20    -0.07   -2232.40    -0.24
 16   2.4007  10189.57    -0.03   -2433.18     0.12
 17   2.4007  10189.85    -0.02   -2433.18     0.13
 18   2.4007  10190.19     0.03   -2433.22     0.10
 19   3.1291  19916.96     0.07   -3234.52    -0.08
 20   3.1291  19915.73     0.07   -3234.54    -0.07
 21   3.1292  19914.64     0.19   -3234.51    -0.02
 22   3.1292  19913.40     0.19   -3234.58    -0.06
 23   4.1726  26645.06    -0.06   -4311.26    -0.04
 24   4.1726  26644.05    -0.07   -4311.08     0.17
 25   4.1727  26642.83    -0.31   -4311.27    -0.01
 26   4.2625  24749.24     0.10   -4362.15     0.22
 27   4.2626  24748.83     0.09   -4362.59    -0.20
 28   4.2626  24748.39     0.06   -4362.36     0.04
 29   4.2626  24747.97     0.05   -4362.56    -0.14
 30   4.2762  24617.78     0.05   -4368.58     0.14
 31   4.2763  24617.39    -0.03   -4368.84    -0.10
 32   4.2763  24617.07    -0.03   -4368.78    -0.03
 33   4.2764  24616.74    -0.04   -4368.82    -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.

14XT40    quality flag:3

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

axisobj        39.820    39.832    39.808
ecceobj         0.199     0.200     0.199
incobj          7.314     7.314     7.313
qmin           31.334    31.327    31.326
qmax           48.029    47.864    47.980
amean          39.456    39.456    39.456
amin           39.104    39.106    39.100
amax           39.863    39.857    39.860
emean           0.183     0.183     0.183
emin            0.162     0.162     0.162
emax            0.206     0.204     0.205
imean           8.671     8.671     8.670
imin            8.007     8.005     8.002
imax            9.422     9.420     9.421
excite_mean     0.237     0.237     0.237
fracstop        1.000     1.000     1.000
cjmean          2.988     2.988     2.988

libcent 0       180.4     180.4     180.5
libamp  0        39.8      40.3      39.8
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       170.4     170.4     170.7
kozaiamp        179.9     180.0     179.9