Orbit Fit and Astrometric record for 14XY40

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: 14XY40    
# Created Tue Nov 30 02:13:00 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     71 observations of     71
# Arc:   6.88y
# First observation: 2014/12/15
#  Last observation: 2021/10/31
# Chi-squared of fit:    15.39 DOF:    136 RMS:  0.08
# Min/Max residuals:    -0.45    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.180582E-05  1.423553E-02 -3.278736E-06 -4.345329E-03  1.870978E-02 -1.122599E-03
# Covariance matrix:
  6.9865E-14 -4.0744E-14 -7.3321E-15  8.1948E-15 -1.9383E-14 -3.0989E-13
 -4.0744E-14  4.7633E-14  8.9466E-15 -1.3027E-14 -4.6512E-15  4.3937E-13
 -7.3321E-15  8.9466E-15  4.8334E-14 -1.7216E-14  3.8529E-15  1.0307E-13
  8.1948E-15 -1.3027E-14 -1.7216E-14  1.2388E-14  3.2673E-15 -1.4332E-13
 -1.9383E-14 -4.6512E-15  3.8529E-15  3.2673E-15  8.0989E-14  9.6364E-15
 -3.0989E-13  4.3937E-13  1.0307E-13 -1.4332E-13  9.6364E-15  4.9252E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -24.382087    5.915694   -0.957571   -0.092877   -0.205399  2457006.626048
# Heliocentric elements and errors
Epoch:              2457006.5000  =  2014/12/15
Mean Anomaly:          207.02748 +/-     0.045
Argument of Peri:       37.36264 +/-     0.043
Long of Asc Node:      132.92195 +/-     0.001
Inclination:            29.10718 +/-     0.000
Eccentricity:         0.15031709 +/-    0.0001
Semi-Major Axis:     47.16231757 +/-    0.0025
Time of Perihelion: 2507275.7100 +/-      15.7
Perihelion:          40.07301540 +/-    0.0041
Aphelion:            54.25161975 +/-    0.0045
Period (y)              323.8925 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           48.54448740 +/-    0.0007
Ecliptic Y            5.99458653 +/-    0.0001
Ecliptic Z          -22.06460577 +/-    0.0003
Ecliptic XDOT        -0.00062870 +/-    0.0000
Ecliptic YDOT         0.00202442 +/-    0.0000
Ecliptic ZDOT        -0.00051124 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   53.65960797 +/-    0.0007
Geocenter to KBO     53.44808730 +/-    0.0008
# Hcoef:  4.97

The following table shows the complete astrometric record for 14XY40. 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 (14XY40) followed by the observatory code and reference code for the source of the astrometry.

2014 12  15.12527  01 01 47.191  -19 57 47.01  22.0i 14XY40    W84  C~4yVR      
2014 12  15.12527  01 01 47.19   -19 57 47.0   22.1i 14XY40    W84  C~3cpX      
2014 12  20.12168  01 01 42.184  -19 56 02.52  22.7g 14XY40    W84  C~4yVR      
2014 12  20.12168  01 01 42.18   -19 56 02.5   22.8g 14XY40    W84  C~3cpX      
2014 12  20.12305  01 01 42.186  -19 56 02.43  22.1r 14XY40    W84  C~4yVR      
2014 12  20.12305  01 01 42.19   -19 56 02.4   22.2r 14XY40    W84  C~3cpX      
2014 12  22.05862  01 01 40.752  -19 55 18.36  22.1r 14XY40    W84  C~4yVR      
2014 12  22.05862  01 01 40.75   -19 55 18.3   21.9r 14XY40    W84  C~3cpX      
2014 12  24.10142  01 01 39.524  -19 54 29.49  23.1g 14XY40    W84  C~4yVR      
2014 12  24.10142  01 01 39.52   -19 54 29.5   23.2g 14XY40    W84  C~3cpX      
2014 12  24.10280  01 01 39.524  -19 54 29.44  22.0i 14XY40    W84  C~4yVR      
2014 12  24.10280  01 01 39.52   -19 54 29.4   22.1i 14XY40    W84  C~3cpX      
2014 12  30.07018  01 01 37.767  -19 51 55.17  22.2z 14XY40    W84  C~4yVR      
2014 12  30.07018  01 01 37.77   -19 51 55.2   22.1z 14XY40    W84  C~3cpX      
2015 01  09.07192  01 01 40.895  -19 47 00.70  22.5r 14XY40    W84  C~4yVR      
2015 01  09.07192  01 01 40.89   -19 47 00.7   22.6r 14XY40    W84  C~3cpX      
2015 11  06.105046 01 06 58.58   -19 55 11.3   22.1i 14XY40    W84  C~1yT5      
2015 11  06.10505  01 06 58.588  -19 55 11.36  22.0i 14XY40    W84  C~4yVR      
2015 11  06.10505  01 06 58.59   -19 55 11.4   22.0i 14XY40    W84  C~3cpX      
2015 11  06.106424 01 06 58.58   -19 55 11.3   22.3r 14XY40    W84  C~1yT5      
2015 11  06.10643  01 06 58.582  -19 55 11.41  22.2r 14XY40    W84  C~4yVR      
2015 11  06.10643  01 06 58.58   -19 55 11.4   22.3r 14XY40    W84  C~3cpX      
2015 11  06.107789 01 06 58.58   -19 55 11.2   23.2g 14XY40    W84  C~1yT5      
2015 11  06.10780  01 06 58.581  -19 55 11.35  23.0g 14XY40    W84  C~4yVR      
2015 11  06.10780  01 06 58.58   -19 55 11.3   23.1g 14XY40    W84  C~3cpX      
2015 12  01.06457  01 05 47.312  -19 54 15.19  21.4z 14XY40    W84  C~4yVR      
2015 12  01.06457  01 05 47.31   -19 54 15.2   21.9z 14XY40    W84  C~3cpX      
2015 12  01.064572 01 05 47.28   -19 54 15.3   22.3z 14XY40    W84  C~1yT5      
2015 12  04.03499  01 05 41.055  -19 53 41.07  21.9z 14XY40    W84  C~4yVR      
2015 12  04.03499  01 05 41.05   -19 53 41.1   22.3z 14XY40    W84  C~3cpX      
2015 12  05.163426 01 05 38.78   -19 53 26.8   22.2z 14XY40    W84  C~1yT5      
2015 12  05.16343  01 05 38.809  -19 53 26.80  22.1z 14XY40    W84  C~4yVR      
2015 12  05.16343  01 05 38.81   -19 53 26.8   22.2z 14XY40    W84  C~3cpX      
2016 08  16.35934  01 15 03.036  -19 12 10.56  21.5z 14XY40    W84  C~4yVR      
2016 08  16.35934  01 15 03.03   -19 12 10.6   21.8z 14XY40    W84  C~3cpX      
2016 08  16.36071  01 15 03.031  -19 12 10.56  22.1i 14XY40    W84  C~4yVR      
2016 08  16.36071  01 15 03.03   -19 12 10.5   22.0i 14XY40    W84  C~3cpX      
2016 08  29.36656  01 14 34.236  -19 20 00.05  22.1r 14XY40    W84  C~4yVR      
2016 08  29.36656  01 14 34.23   -19 20 00.0   22.2r 14XY40    W84  C~3cpX      
2016 08  29.36794  01 14 34.230  -19 19 59.97  23.1g 14XY40    W84  C~4yVR      
2016 08  29.36794  01 14 34.23   -19 20 00.0   23.2g 14XY40    W84  C~3cpX      
2016 10  27.15054  01 11 08.853  -19 46 09.76  22.0r 14XY40    W84  C~4yVR      
2016 10  27.15054  01 11 08.85   -19 46 09.7   22.1r 14XY40    W84  C~3cpX      
2016 12  05.15324  01 09 13.254  -19 45 50.89  22.2r 14XY40    W84  C~4yVR      
2016 12  05.15324  01 09 13.25   -19 45 50.9   22.2r 14XY40    W84  C~3cpX      
2016 12  05.15462  01 09 13.247  -19 45 50.80  22.0i 14XY40    W84  C~4yVR      
2016 12  05.15462  01 09 13.25   -19 45 50.8   22.2i 14XY40    W84  C~3cpX      
2016 12  05.15597  01 09 13.249  -19 45 50.84  22.8g 14XY40    W84  C~4yVR      
2016 12  05.15597  01 09 13.25   -19 45 50.8   22.8g 14XY40    W84  C~3cpX      
2017 10  21.143930 01 15 10.050  -19 36 41.22        14XY40    W84  C~2g4M      
2017 10  21.14393  01 15 10.050  -19 36 41.20  22.2r 14XY40    W84  C~4yVR      
2017 10  21.14529  01 15 10.046  -19 36 41.16  22.2i 14XY40    W84  C~4yVR      
2017 10  21.145295 01 15 10.049  -19 36 41.19        14XY40    W84  C~2g4M      
2017 11  22.19188  01 13 21.125  -19 40 02.26  22.7g 14XY40    W84  C~4yVR      
2017 11  22.193258 01 13 21.113  -19 40 02.17  22.1i 14XY40    W84  C~2g4M      
2017 11  22.19326  01 13 21.115  -19 40 02.16  22.1i 14XY40    W84  C~4yVR      
2017 11  23.063883 01 13 18.722  -19 39 58.00  21.9z 14XY40    W84  C~2g4M      
2017 11  23.06389  01 13 18.729  -19 39 58.01  21.7z 14XY40    W84  C~4yVR      
2017 11  27.177657 01 13 07.902  -19 39 31.86  22.0z 14XY40    W84  C~2g4M      
2017 11  27.17766  01 13 07.901  -19 39 31.92  21.8z 14XY40    W84  C~4yVR      
2017 12  08.05676  01 12 44.069  -19 37 29.23  22.4r 14XY40    W84  C~4yVR      
2017 12  11.09973  01 12 38.733  -19 36 41.50  22.9g 14XY40    W84  C~4yVR      
2017 12  20.10187  01 12 26.701  -19 33 47.81  22.2R 14XY40    G37  C~2Uxt      
2017 12  20.21751  01 12 26.575  -19 33 45.27        14XY40    G37  C~2Uxt      
2018 09  22.31880  01 20 36.980  -19 16 31.01  22.3Y 14XY40    W84  C~4yVR      
2018 10  01.32900  01 20 04.461  -19 20 53.62  22.0i 14XY40    W84  C~4yVR      
2018 11  30.17108  01 16 37.749  -19 31 02.67  22.2r 14XY40    W84  C~4yVR      
2018 11  30.17245  01 16 37.749  -19 31 02.63  22.9g 14XY40    W84  C~4yVR      
2021 10  31.378407 01 29 05.595  -19 04 00.08  22.2w 14XY40    F51  C~5BVW      
2021 10  31.390029 01 29 05.528  -19 04 00.09  22.2w 14XY40    F51  C~5BVW      
2021 10  31.413229 01 29 05.442  -19 04 00.54  22.4w 14XY40    F51  C~5BVW      

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    -0.05
     2   0.0000      0.00     0.10       0.00    -0.06
     3   0.0137      0.00    -0.03       0.00    -0.04
     4   0.0137      0.00    -0.09       0.00    -0.02
     5   0.0137      0.00     0.07       0.00     0.05
     6   0.0137      0.00     0.01       0.00     0.02
     7   0.0190      0.00     0.12       0.00    -0.06
     8   0.0190      0.00     0.09       0.00     0.00
     9   0.0246      0.00    -0.02       0.00     0.05
    10   0.0246      0.00     0.04       0.00     0.06
    11   0.0246      0.00    -0.01       0.00     0.11
    12   0.0246      0.00     0.05       0.00     0.07
    13   0.0409      0.00     0.09       0.00    -0.03
    14   0.0409      0.00     0.05       0.00    -0.00
    15   0.0683      0.00     0.08       0.00     0.05
    16   0.0683      0.00     0.01       0.00     0.05
    17   0.8925      0.00    -0.12       0.00     0.06
    18   0.8925      0.00     0.03       0.00    -0.04
    19   0.8925      0.00     0.00       0.00     0.00
    20   0.8925      0.00    -0.04       0.00     0.07
    21   0.8925      0.00    -0.04       0.00    -0.03
    22   0.8925      0.00    -0.01       0.00    -0.04
    23   0.8925      0.00     0.03       0.00     0.18
    24   0.8925      0.00     0.03       0.00     0.08
    25   0.8925      0.00     0.04       0.00     0.03
    26   0.9608      0.00     0.00       0.00    -0.06
    27   0.9608      0.00     0.03       0.00    -0.05
    28   0.9608      0.00    -0.45       0.00    -0.16
    29   0.9690      0.00    -0.00       0.00     0.03
    30   0.9690      0.00     0.07       0.00     0.06
    31   0.9720      0.00    -0.43       0.00    -0.08
    32   0.9720      0.00     0.02       0.00    -0.08
    33   0.9720      0.00     0.00       0.00    -0.08
    34   1.6707      0.00    -0.05       0.00    -0.06
    35   1.6707      0.00     0.04       0.00    -0.02
    36   1.6707      0.00    -0.01       0.00     0.09
    37   1.6707      0.00     0.00       0.00     0.03
    38   1.7063      0.00    -0.04       0.00     0.05
    39   1.7063      0.00     0.05       0.00     0.00
    40   1.7063      0.00     0.01       0.00     0.10
    41   1.7063      0.00     0.01       0.00     0.13
    42   1.8673      0.00     0.02       0.00     0.00
    43   1.8673      0.00     0.07       0.00    -0.06
    44   1.9741      0.00    -0.02       0.00    -0.06
    45   1.9741      0.00     0.04       0.00    -0.05
    46   1.9741      0.00     0.03       0.00     0.02
    47   1.9741      0.00    -0.02       0.00     0.02
    48   1.9741      0.00     0.07       0.00     0.00
    49   1.9741      0.00     0.05       0.00    -0.04
    50   2.8502      0.00    -0.05       0.00    -0.04
    51   2.8502      0.00    -0.05       0.00    -0.06
    52   2.8502      0.00    -0.03       0.00     0.02
    53   2.8502      0.00     0.02       0.00    -0.01
    54   2.9379      0.00     0.12       0.00    -0.09
    55   2.9379      0.00     0.00       0.00    -0.00
    56   2.9379      0.00     0.03       0.00     0.01
    57   2.9403      0.00     0.08       0.00     0.09
    58   2.9403      0.00     0.19       0.00     0.08
    59   2.9515      0.00     0.04       0.00     0.03
    60   2.9515      0.00     0.02       0.00    -0.03
    61   2.9813      0.00     0.01       0.00    -0.01
    62   2.9897      0.00    -0.01       0.00    -0.03
    63   3.0143      0.00    -0.03       0.00    -0.00
    64   3.0146      0.00    -0.06       0.00    -0.01
    65   3.7706      0.00     0.13       0.00    -0.03
    66   3.7952      0.00    -0.06       0.00    -0.01
    67   3.9591      0.00     0.05       0.00    -0.05
    68   3.9591      0.00     0.10       0.00    -0.02
    69   6.8782      0.00     0.18       0.00    -0.00
    70   6.8782      0.00    -0.16       0.00     0.12
    71   6.8783      0.00    -0.14       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.

14XY40    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        47.532    47.532    47.532
ecceobj         0.141     0.141     0.141
incobj         29.050    29.050    29.050
qmin           39.376    39.377    39.376
qmax           55.601    55.601    55.598
amean          47.316    47.316    47.316
amin           46.924    46.920    46.924
amax           47.749    47.748    47.750
emean           0.150     0.150     0.150
emin            0.135     0.134     0.135
emax            0.165     0.165     0.165
imean          27.657    27.657    27.657
imin           27.330    27.332    27.328
imax           27.999    27.999    27.999
excite_mean     0.488     0.488     0.488
fracstop        1.000     1.000     1.000
cjmean          2.832     2.832     2.832

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       170.8     170.9     170.8
kozaiamp        179.9     179.9     179.9