Orbit Fit and Astrometric record for 14XU40

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: 14XU40    
# Created Mon Mar 25 01:10:00 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   64 observations of   64
# Arc:   7.25y
# First observation: 2010/10/10
#  Last observation: 2018/01/10
# Chi-squared of fit:    59.27 DOF:  122 RMS:  0.17
# Min/Max residuals:    -0.66    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.897455E-05  3.134380E-02 -3.370251E-06 -2.509419E-03  2.868566E-02 -3.995364E-03
# Covariance matrix:
  3.3305E-13 -1.5274E-13 -1.8392E-14  1.1018E-14 -5.5776E-14 -5.0225E-13
 -1.5274E-13  1.0037E-13  1.3173E-14 -7.9284E-15  7.3496E-14  3.6176E-13
 -1.8392E-14  1.3173E-14  1.4053E-13 -2.7325E-14  8.9564E-15  5.0968E-14
  1.1018E-14 -7.9284E-15 -2.7325E-14  6.5360E-15 -5.4789E-15 -3.0639E-14
 -5.5776E-14  7.3496E-14  8.9564E-15 -5.4789E-15  1.2996E-13  2.5080E-13
 -5.0225E-13  3.6176E-13  5.0968E-14 -3.0639E-14  2.5080E-13  1.3976E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.374637   63.136138    0.717225    0.016530   -0.689453  2455479.942656
# Heliocentric elements and errors
Epoch:              2455480.5000  =  2010/10/11
Mean Anomaly:          313.45163 +/-     0.007
Argument of Peri:      227.00049 +/-     0.010
Long of Asc Node:      258.38648 +/-     0.000
Inclination:             4.75893 +/-     0.000
Eccentricity:         0.17547576 +/-    0.0000
Semi-Major Axis:     39.56378976 +/-    0.0020
Time of Perihelion: 2467233.4596 +/-       6.2
Perihelion:          32.62130386 +/-    0.0023
Aphelion:            46.50627567 +/-    0.0029
Period (y)              248.8600 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           16.70308551 +/-    0.0002
Ecliptic Y           31.37981307 +/-    0.0004
Ecliptic Z            0.83617524 +/-    0.0000
Ecliptic XDOT        -0.00283826 +/-    0.0000
Ecliptic YDOT         0.00102320 +/-    0.0000
Ecliptic ZDOT        -0.00024860 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.55827813 +/-    0.0004
Geocenter to KBO     34.86072370 +/-    0.0004
# Hcoef:  7.10

The following table shows the complete astrometric record for 14XU40. 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 (14XU40) followed by the observatory code and reference code for the source of the astrometry.

2010 10  10.44189  04 03 14.857  +22 07 58.85  22.9G 14XU40    F51  C~2r7Z      
2011 10  25.42137  04 09 58.313  +22 17 04.05  22.2G 14XU40    F51  C~2r7Z      
2011 10  25.43591  04 09 58.250  +22 17 04.05  22.8G 14XU40    F51  C~2r7Z      
2011 10  25.45040  04 09 58.168  +22 17 03.81  22.8G 14XU40    F51  C~2r7Z      
2011 10  25.46486  04 09 58.095  +22 17 03.39  22.3G 14XU40    F51  C~2r7Z      
2011 12  01.49406  04 06 25.286  +22 07 07.16  21.8G 14XU40    F51  C~2r7Z      
2012 02  05.30797  04 01 55.874  +21 51 49.37  22.2G 14XU40    F51  C~2r7Z      
2012 10  11.60220  04 18 48.375  +22 30 07.19  22.8G 14XU40    F51  C~2r7Z      
2012 10  22.55196  04 18 02.608  +22 28 15.59  22.4w 14XU40    F51  C~1vXw      
2012 10  22.56640  04 18 02.547  +22 28 15.47  22.4w 14XU40    F51  C~1vXw      
2012 10  22.58085  04 18 02.479  +22 28 15.13  22.4w 14XU40    F51  C~1vXw      
2012 11  06.57992  04 16 45.007  +22 24 58.64  21.5G 14XU40    F51  C~2r7Z      
2013 01  17.34278  04 10 19.426  +22 06 27.78  22.2G 14XU40    F51  C~2r7Z      
2013 10  28.63401  04 25 34.178  +22 36 32.99  23.6G 14XU40    F51  C~2r7Z      
2013 11  01.56503  04 25 14.071  +22 35 45.72  21.7G 14XU40    F51  C~2r7Z      
2013 12  03.30952  04 22 06.511  +22 28 01.66  22.4w 14XU40    F51  C~1vXw      
2013 12  03.32365  04 22 06.407  +22 28 01.15  22.4w 14XU40    F51  C~1vXw      
2013 12  03.33783  04 22 06.330  +22 28 00.99  22.4w 14XU40    F51  C~1vXw      
2014 02  26.26315  04 17 28.509  +22 13 22.22  22.3G 14XU40    F51  C~2r7Z      
2014 11  17.34907  04 31 51.911  +22 40 36.43  22.3G 14XU40    F51  C~2r7Z      
2014 11  17.36194  04 31 51.830  +22 40 36.12  22.2G 14XU40    F51  C~2r7Z      
2014 11  17.37482  04 31 51.750  +22 40 36.04  22.2G 14XU40    F51  C~2r7Z      
2014 11  17.38770  04 31 51.682  +22 40 35.92  22.2G 14XU40    F51  C~2r7Z      
2014 11  19.37490  04 31 39.717  +22 40 08.44  22.6G 14XU40    F51  C~2r7Z      
2014 11  27.53169  04 30 49.560  +22 38 12.34  22.5G 14XU40    F51  C~2r7Z      
2014 12  13.29011  04 29 12.059  +22 34 18.54  22.3w 14XU40    F51  C~1vXw      
2014 12  13.30273  04 29 11.974  +22 34 18.29  22.6w 14XU40    F51  C~1vXw      
2014 12  13.31539  04 29 11.876  +22 34 18.25  22.3w 14XU40    F51  C~1vXw      
2014 12  13.32811  04 29 11.825  +22 34 17.83  22.6w 14XU40    F51  C~1vXw      
2015 01  22.34239  04 25 56.481  +22 25 39.21  22.6G 14XU40    F51  C~2r7Z      
2015 01  22.35636  04 25 56.442  +22 25 39.12  22.2G 14XU40    F51  C~2r7Z      
2015 01  22.37031  04 25 56.395  +22 25 38.94  22.8G 14XU40    F51  C~2r7Z      
2015 01  24.32494  04 25 50.425  +22 25 20.33  22.2w 14XU40    F51  C~1vXw      
2015 01  24.35392  04 25 50.326  +22 25 20.11  22.3w 14XU40    F51  C~1vXw      
2015 01  24.36845  04 25 50.291  +22 25 19.75  22.1w 14XU40    F51  C~1vXw      
2015 09  19.54760  04 43 38.019  +22 54 54.84  23.0G 14XU40    F51  C~2r7Z      
2015 10  24.45033  04 42 09.304  +22 51 52.40  22.5G 14XU40    F51  C~2r7Z      
2015 10  26.44524  04 42 00.435  +22 51 34.84  22.1G 14XU40    F51  C~2r7Z      
2015 12  09.45573  04 37 46.980  +22 42 38.36  22.3G 14XU40    F51  C~2r7Z      
2015 12  09.46859  04 37 46.907  +22 42 38.13  22.6G 14XU40    F51  C~2r7Z      
2015 12  09.48123  04 37 46.809  +22 42 38.17  22.4G 14XU40    F51  C~2r7Z      
2015 12  09.49395  04 37 46.730  +22 42 37.85  22.2G 14XU40    F51  C~2r7Z      
2016 01  07.27406  04 35 02.882  +22 36 16.86  22.2G 14XU40    F51  C~2r7Z      
2016 01  08.23424  04 34 58.304  +22 36 05.49  22.2G 14XU40    F51  C~2r7Z      
2016 01  08.24779  04 34 58.240  +22 36 05.25  23.0G 14XU40    F51  C~2r7Z      
2016 01  08.26134  04 34 58.182  +22 36 04.90  22.9G 14XU40    F51  C~2r7Z      
2016 01  08.27487  04 34 58.109  +22 36 04.93  22.7G 14XU40    F51  C~2r7Z      
2016 04  02.25649  04 35 00.871  +22 32 42.83  21.7G 14XU40    F51  C~2r7Z      
2016 10  13.50754  04 50 59.817  +22 58 01.21  22.3G 14XU40    F51  C~2r7Z      
2016 10  26.61844  04 50 09.255  +22 56 25.38  22.6G 14XU40    F51  C~2r7Z      
2016 11  26.52573  04 47 18.341  +22 50 58.09  21.9G 14XU40    F51  C~2r7Z      
2016 12  25.42272  04 44 19.556  +22 44 55.03  22.6G 14XU40    F51  C~2r7Z      
2017 01  26.34403  04 41 52.263  +22 39 19.86  23.1G 14XU40    F51  C~2r7Z      
2017 11  21.37264  04 56 10.859  +22 55 54.94  22.3G 14XU40    F51  C~2r7Z      
2017 11  21.38561  04 56 10.787  +22 55 54.71  22.3G 14XU40    F51  C~2r7Z      
2017 11  21.39874  04 56 10.708  +22 55 54.79  21.8G 14XU40    F51  C~2r7Z      
2017 11  21.41199  04 56 10.617  +22 55 54.43  22.7G 14XU40    F51  C~2r7Z      
2017 12  10.29160  04 54 12.200  +22 52 22.78  22.0G 14XU40    F51  C~2r7Z      
2017 12  22.46362  04 52 56.284  +22 50 02.22  22.6G 14XU40    F51  C~2r7Z      
2017 12  22.47597  04 52 56.220  +22 50 02.17  23.3G 14XU40    F51  C~2r7Z      
2018 01  10.38033  04 51 11.417  +22 46 38.14  22.4G 14XU40    F51  C~2r7Z      
2018 01  10.39298  04 51 11.343  +22 46 38.69  22.1G 14XU40    F51  C~2r7Z      
2018 01  10.40562  04 51 11.286  +22 46 38.44  22.2G 14XU40    F51  C~2r7Z      
2018 01  10.41818  04 51 11.234  +22 46 38.14  22.8G 14XU40    F51  C~2r7Z      

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    -0.46       0.00     0.33
  2   1.0403      0.00    -0.15       0.00    -0.02
  3   1.0404      0.00    -0.00       0.00     0.16
  4   1.0404      0.00    -0.15       0.00     0.11
  5   1.0404      0.00    -0.15       0.00    -0.13
  6   1.1418      0.00    -0.15       0.00    -0.04
  7   1.3220      0.00     0.13       0.00     0.16
  8   2.0045      0.00     0.31       0.00     0.06
  9   2.0345      0.00    -0.21       0.00     0.03
 10   2.0346      0.00    -0.09       0.00     0.07
 11   2.0346      0.00    -0.08       0.00    -0.10
 12   2.0757      0.00     0.11       0.00    -0.66
 13   2.2721      0.00     0.21       0.00     0.03
 14   3.0505      0.00     0.07       0.00    -0.30
 15   3.0613      0.00     0.13       0.00    -0.03
 16   3.1482      0.00    -0.07       0.00     0.14
 17   3.1482      0.00    -0.30       0.00    -0.15
 18   3.1482      0.00    -0.13       0.00    -0.09
 19   3.3808      0.00    -0.05       0.00    -0.02
 20   4.1038      0.00     0.09       0.00     0.04
 21   4.1038      0.00     0.04       0.00    -0.10
 22   4.1039      0.00     0.02       0.00    -0.01
 23   4.1039      0.00     0.17       0.00     0.05
 24   4.1093      0.00     0.03       0.00    -0.05
 25   4.1317      0.00    -0.04       0.00     0.15
 26   4.1748      0.00     0.22       0.00     0.19
 27   4.1748      0.00     0.11       0.00     0.13
 28   4.1749      0.00    -0.19       0.00     0.27
 29   4.1749      0.00     0.22       0.00     0.04
 30   4.2845      0.00     0.04       0.00    -0.04
 31   4.2845      0.00     0.14       0.00     0.01
 32   4.2845      0.00     0.12       0.00    -0.03
 33   4.2899      0.00     0.12       0.00    -0.18
 34   4.2900      0.00    -0.04       0.00    -0.13
 35   4.2900      0.00     0.09       0.00    -0.35
 36   4.9421      0.00    -0.03       0.00    -0.10
 37   5.0377      0.00    -0.08       0.00    -0.20
 38   5.0431      0.00    -0.02       0.00     0.27
 39   5.1636      0.00     0.00       0.00    -0.09
 40   5.1637      0.00     0.13       0.00    -0.13
 41   5.1637      0.00    -0.14       0.00     0.08
 42   5.1637      0.00    -0.11       0.00    -0.06
 43   5.2425      0.00    -0.32       0.00     0.12
 44   5.2452      0.00    -0.02       0.00     0.16
 45   5.2452      0.00     0.01       0.00     0.08
 46   5.2452      0.00     0.12       0.00    -0.12
 47   5.2453      0.00     0.01       0.00     0.07
 48   5.4779      0.00     0.25       0.00     0.19
 49   6.0098      0.00    -0.18       0.00     0.15
 50   6.0457      0.00     0.03       0.00    -0.06
 51   6.1303      0.00     0.13       0.00    -0.16
 52   6.2094      0.00    -0.04       0.00     0.18
 53   6.2968      0.00     0.10       0.00    -0.08
 54   7.1155      0.00    -0.41       0.00     0.05
 55   7.1155      0.00    -0.29       0.00    -0.05
 56   7.1156      0.00    -0.27       0.00     0.17
 57   7.1156      0.00    -0.41       0.00    -0.06
 58   7.1673      0.00    -0.12       0.00    -0.10
 59   7.2006      0.00    -0.14       0.00    -0.18
 60   7.2006      0.00     0.04       0.00    -0.09
 61   7.2524      0.00    -0.12       0.00    -0.33
 62   7.2524      0.00    -0.28       0.00     0.35
 63   7.2525      0.00    -0.19       0.00     0.23
 64   7.2525      0.00    -0.02       0.00     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.

14XU40    quality flag:3

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

axisobj        39.772    39.772    39.772
ecceobj         0.177     0.177     0.177
incobj          4.749     4.749     4.749
qmin           31.986    31.986    31.986
qmax           47.377    47.376    47.378
amean          39.456    39.456    39.456
amin           39.124    39.125    39.124
amax           39.857    39.856    39.857
emean           0.172     0.172     0.172
emin            0.155     0.155     0.155
emax            0.190     0.190     0.190
imean           6.387     6.387     6.387
imin            5.836     5.836     5.836
imax            6.975     6.974     6.975
excite_mean     0.205     0.205     0.205
fracstop        1.000     1.000     1.000
cjmean          3.004     3.004     3.004

libcent 0       180.6     180.8     180.5
libamp  0        26.1      26.1      25.9
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       174.1     174.3     174.2
kozaiamp        180.0     180.0     180.0