Orbit Fit and Astrometric record for 14XZ40

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: 14XZ40    
# Created Wed Dec  8 02:12:59 2021
# Orbit generated from Bernstein formalism
# Fitting     35 observations of     35
# Arc:   4.02y
# First observation: 2013/12/14
#  Last observation: 2017/12/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000097   0.027461  -0.000044   0.007773   0.027150   0.000000
# Chi-squared of fit:     9.60 DOF:     64 RMS:  0.09
# Min/Max residuals:    -0.27    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.561880E-05  2.738984E-02  4.439470E-06  7.792396E-03  2.707254E-02  2.260467E-04
# Covariance matrix:
  8.4257E-13 -1.0042E-12  2.1919E-13 -2.6667E-13 -3.8697E-13 -7.3842E-12
 -1.0042E-12  1.2942E-12 -2.9496E-13  3.5419E-13  5.6105E-13  9.8308E-12
  2.1919E-13 -2.9496E-13  2.2532E-13 -1.7501E-13 -1.4618E-13 -2.3652E-12
 -2.6667E-13  3.5419E-13 -1.7501E-13  1.7592E-13  1.5178E-13  2.8594E-12
 -3.8697E-13  5.6105E-13 -1.4618E-13  1.5178E-13  4.8376E-13  4.3326E-12
 -7.3842E-12  9.8308E-12 -2.3652E-12  2.8594E-12  4.3326E-12  7.9269E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -43.199671   79.785799   -0.041426   -0.671625   -0.715438  2456640.808768
# Heliocentric elements and errors
Epoch:              2456640.5000  =  2013/12/14
Mean Anomaly:           11.68640 +/-     0.263
Argument of Peri:      273.58201 +/-     0.299
Long of Asc Node:      146.93721 +/-     0.001
Inclination:            44.53040 +/-     0.000
Eccentricity:         0.06056601 +/-    0.0001
Semi-Major Axis:     40.02825328 +/-    0.0032
Time of Perihelion: 2453637.6995 +/-      67.5
Perihelion:          37.60390166 +/-    0.0055
Aphelion:            42.45260490 +/-    0.0057
Period (y)              253.2551 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            4.90668079 +/-    0.0001
Ecliptic Y           27.47551872 +/-    0.0007
Ecliptic Z          -25.28545408 +/-    0.0006
Ecliptic XDOT        -0.00263354 +/-    0.0000
Ecliptic YDOT         0.00103637 +/-    0.0000
Ecliptic ZDOT         0.00055896 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.66077314 +/-    0.0007
Geocenter to KBO     36.93780347 +/-    0.0009
# Hcoef:  7.41

The following table shows the complete astrometric record for 14XZ40. 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 (14XZ40) followed by the observatory code and reference code for the source of the astrometry.

2013 12  14.30799  05 28 21.853  -20 02 25.46  22.7z 14XZ40    W84  C~4yVR      
2014 12  01.298044 05 36 08.31   -19 26 46.8   23.2g 14XZ40    W84  C~352S      
2014 12  01.298565 05 36 08.31   -19 26 46.7   23.6g 14XZ40    W84  C~1zPw      
2014 12  01.29857  05 36 08.308  -19 26 46.85  23.8g 14XZ40    W84  C~4yVR      
2014 12  01.299410 05 36 08.30   -19 26 46.8   23.1r 14XZ40    W84  C~352S      
2014 12  01.299931 05 36 08.30   -19 26 46.9   23.7r 14XZ40    W84  C~1zPw      
2014 12  01.29994  05 36 08.299  -19 26 46.80  23.5r 14XZ40    W84  C~4yVR      
2014 12  01.300787 05 36 08.29   -19 26 46.9   22.8i 14XZ40    W84  C~352S      
2014 12  01.301308 05 36 08.28   -19 26 46.8   22.8i 14XZ40    W84  C~1zPw      
2014 12  01.30131  05 36 08.284  -19 26 46.85  22.8i 14XZ40    W84  C~4yVR      
2014 12  12.33555  05 35 05.264  -19 28 18.03  23.1z 14XZ40    W84  C~4yVR      
2014 12  14.325104 05 34 53.69   -19 28 19.5   22.8i 14XZ40    W84  C~352S      
2014 12  14.325625 05 34 53.69   -19 28 19.2   22.9i 14XZ40    W84  C~1zPw      
2014 12  14.32563  05 34 53.691  -19 28 19.45  23.0i 14XZ40    W84  C~4yVR      
2014 12  17.316539 05 34 36.26   -19 28 13.1   22.8r 14XZ40    W84  C~352S      
2014 12  17.317060 05 34 36.26   -19 28 13.0   23.2r 14XZ40    W84  C~1zPw      
2014 12  21.309907 05 34 13.02   -19 27 48.5   23.1r 14XZ40    W84  C~352S      
2014 12  21.310428 05 34 13.02   -19 27 48.5   23.5r 14XZ40    W84  C~1zPw      
2014 12  21.31044  05 34 13.007  -19 27 48.66  22.9r 14XZ40    W84  C~4yVR      
2014 12  27.291389 05 33 38.60   -19 26 36.2   23.4g 14XZ40    W84  C~352S      
2014 12  27.291910 05 33 38.60   -19 26 36.3   23.6g 14XZ40    W84  C~1zPw      
2014 12  27.29192  05 33 38.602  -19 26 36.24  23.6g 14XZ40    W84  C~4yVR      
2014 12  27.292755 05 33 38.59   -19 26 36.2   22.9i 14XZ40    W84  C~352S      
2014 12  27.293275 05 33 38.59   -19 26 36.4   23.4i 14XZ40    W84  C~1zPw      
2014 12  27.29328  05 33 38.587  -19 26 36.17  23.4i 14XZ40    W84  C~4yVR      
2015 02  15.11944  05 30 06.985  -18 52 43.97  24.0g 14XZ40    W84  C~4yVR      
2015 02  15.120266 05 30 06.98   -18 52 43.8   22.9r 14XZ40    W84  C~352S      
2015 02  15.120787 05 30 06.96   -18 52 43.6   22.9r 14XZ40    W84  C~2ICg      
2015 02  15.12079  05 30 06.978  -18 52 43.75  23.2r 14XZ40    W84  C~4yVR      
2015 02  16.121701 05 30 04.91   -18 51 42.7   23.1r 14XZ40    W84  C~352S      
2015 02  16.122222 05 30 04.91   -18 51 42.6   23.1r 14XZ40    W84  C~2ICg      
2016 02  08.16653  05 36 48.382  -18 25 49.04  23.5r 14XZ40    W84  C~4yVR      
2016 02  09.10812  05 36 45.617  -18 24 56.45  23.1i 14XZ40    W84  C~4yVR      
2017 12  20.29703  05 53 28.912  -17 41 21.36  23.1R 14XZ40    G37  C~4UFd      
2017 12  20.33267  05 53 28.708  -17 41 21.06        14XZ40    G37  C~4UFd      

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     0.02
     2   0.9637   6739.32     0.04    1599.97    -0.02
     3   0.9637   6739.33     0.09    1600.07     0.08
     4   0.9637   6739.29     0.05    1599.92    -0.06
     5   0.9637   6739.18     0.01    1599.98     0.00
     6   0.9637   6739.17     0.04    1599.88    -0.09
     7   0.9637   6739.16     0.04    1599.98     0.01
     8   0.9637   6739.03    -0.03    1599.89    -0.08
     9   0.9637   6738.90    -0.12    1600.00     0.04
    10   0.9637   6738.95    -0.07    1599.95    -0.02
    11   0.9939   5842.24    -0.01    1585.41    -0.13
    12   0.9994   5678.90    -0.03    1597.82    -0.01
    13   0.9994   5678.92     0.04    1598.12     0.28
    14   0.9994   5678.92     0.03    1597.87     0.03
    15   1.0076   5433.64     0.01    1625.00     0.07
    16   1.0076   5433.65     0.06    1625.10     0.17
    17   1.0185   5107.98    -0.06    1677.10    -0.12
    18   1.0185   5107.98    -0.02    1677.10    -0.13
    19   1.0185   5107.78    -0.21    1676.96    -0.27
    20   1.0349   4628.59    -0.04    1789.68     0.03
    21   1.0349   4628.58    -0.01    1789.58    -0.08
    22   1.0349   4628.61     0.02    1789.64    -0.02
    23   1.0349   4628.45    -0.08    1789.69     0.01
    24   1.0349   4628.43    -0.05    1789.49    -0.20
    25   1.0349   4628.41    -0.07    1789.72     0.04
    26   1.1713   1802.13     0.13    4056.36    -0.07
    27   1.1713   1802.07     0.09    4056.53     0.05
    28   1.1713   1801.80    -0.16    4056.75     0.24
    29   1.1713   1802.05     0.08    4056.58     0.07
    30   1.1740   1777.52     0.05    4119.75     0.01
    31   1.1740   1777.53     0.07    4119.85     0.08
    32   2.1516   7625.62    -0.06    5198.03     0.05
    33   2.1541   7590.97     0.11    5253.91     0.07
    34   4.0164  22176.03    -0.05    6461.25    -0.08
    35   4.0165  22173.14     0.04    6461.87     0.02

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.

14XZ40    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.157    40.168    40.146
ecceobj         0.064     0.064     0.063
incobj         44.541    44.541    44.541
qmin           37.160    37.130    37.169
qmax           42.729    42.768    42.717
amean          39.861    39.873    39.849
amin           39.558    39.563    39.549
amax           40.167    40.202    40.159
emean           0.054     0.055     0.054
emin            0.045     0.046     0.045
emax            0.064     0.065     0.064
imean          43.399    43.399    43.398
imin           43.170    43.167    43.158
imax           43.637    43.643    43.640
excite_mean     0.689     0.689     0.689
fracstop        1.000     1.000     1.000
cjmean          2.425     2.425     2.425

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       177.8     177.0     179.5
kozaiamp        180.0     180.0     180.0