Orbit Fit and Astrometric record for 14XS40

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: 14XS40    
# Created Tue Oct 24 01:38:31 2017
# Orbit generated from Bernstein formalism
# Fitting   32 observations of   32
# Arc:   4.25y
# First observation: 2012/11/29
#  Last observation: 2017/02/27
Preliminary a, adot, b, bdot, g, gdot:
   0.000036   0.030129  -0.000002   0.007459   0.027853   0.000000
# Chi-squared of fit:     7.71 DOF:   58 RMS:  0.09
# Min/Max residuals:    -0.23    0.26
# Exact a, adot, b, bdot, g, gdot:
  1.657323E-05  3.008380E-02  4.265328E-06  7.453665E-03  2.790184E-02  3.246833E-03
# Covariance matrix:
  4.3724E-13 -2.9877E-13  4.1849E-14 -5.0053E-14 -3.0026E-14 -2.0210E-12
 -2.9877E-13  4.1173E-13 -7.1386E-14  9.8037E-14  2.4016E-13  3.4985E-12
  4.1849E-14 -7.1386E-14  2.9753E-13 -1.3908E-13 -4.0788E-14 -7.3011E-13
 -5.0053E-14  9.8037E-14 -1.3908E-13  8.7263E-14  6.6921E-14  9.7499E-13
 -3.0026E-14  2.4016E-13 -4.0788E-14  6.6921E-14  3.0000E-13  2.0429E-12
 -2.0210E-12  3.4985E-12 -7.3011E-13  9.7499E-13  2.0429E-12  3.5669E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -24.715531  127.745117    0.853163   -0.204507   -0.444472  2456261.051548
# Heliocentric elements and errors
Epoch:              2456260.5000  =  2012/11/29
Mean Anomaly:           24.16171 +/-     0.037
Argument of Peri:      262.72808 +/-     0.058
Long of Asc Node:      186.54139 +/-     0.001
Inclination:            27.56266 +/-     0.000
Eccentricity:         0.17186976 +/-    0.0001
Semi-Major Axis:     42.72258143 +/-    0.0036
Time of Perihelion: 2449414.9273 +/-      10.6
Perihelion:          35.37986162 +/-    0.0066
Aphelion:            50.06530125 +/-    0.0073
Period (y)              279.2508 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.55354506 +/-    0.0004
Ecliptic Y           26.65526748 +/-    0.0005
Ecliptic Z          -14.98504242 +/-    0.0003
Ecliptic XDOT        -0.00270469 +/-    0.0000
Ecliptic YDOT        -0.00133473 +/-    0.0000
Ecliptic ZDOT         0.00053131 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.29594888 +/-    0.0004
Geocenter to KBO     35.83993194 +/-    0.0007
# Hcoef:  5.31

The following table shows the complete astrometric record for 14XS40. 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 (14XS40) followed by the observatory code and reference code for the source of the astrometry.

2012 11  29.55077  08 15 52.774  -05 37 02.79  20.5i 14XS40    F51  C~1vXw      
2012 11  29.56292  08 15 52.740  -05 37 03.00  20.6r 14XS40    F51  C~1vXw      
2012 11  29.57401  08 15 52.688  -05 37 03.47  20.3r 14XS40    F51  C~1vXw      
2014 04  05.24500  08 14 29.990  -04 52 04.64  20.8i 14XS40    F51  C~1vXw      
2014 04  05.25731  08 14 29.972  -04 52 04.14  20.7i 14XS40    F51  C~1vXw      
2014 04  05.26953  08 14 29.967  -04 52 03.46  20.9i 14XS40    F51  C~1vXw      
2014 04  05.28177  08 14 29.959  -04 52 02.85  20.8i 14XS40    F51  C~1vXw      
2014 12  07.49651  08 29 45.552  -05 39 54.96  20.9r 14XS40    F51  C~1vXw      
2014 12  07.50820  08 29 45.505  -05 39 55.20  20.9r 14XS40    F51  C~1vXw      
2014 12  07.51952  08 29 45.492  -05 39 55.55  20.7r 14XS40    F51  C~1vXw      
2015 01  23.39040  08 26 11.126  -05 38 47.25  20.7w 14XS40    F51  C~1vXw      
2015 01  23.39106  08 26 11.122  -05 38 47.43  20.9w 14XS40    F51  C~1vXw      
2015 01  23.40368  08 26 11.053  -05 38 46.95  20.7w 14XS40    F51  C~1vXw      
2015 01  23.40435  08 26 11.048  -05 38 47.11  20.8w 14XS40    F51  C~1vXw      
2015 01  23.41712  08 26 10.979  -05 38 46.71  20.8w 14XS40    F51  C~1vXw      
2015 01  23.41778  08 26 10.975  -05 38 46.88  20.9w 14XS40    F51  C~1vXw      
2015 01  23.43044  08 26 10.908  -05 38 46.42  20.7w 14XS40    F51  C~1vXw      
2015 01  23.43111  08 26 10.901  -05 38 46.56  20.8w 14XS40    F51  C~1vXw      
2015 01  25.37528  08 26 00.388  -05 38 05.28  20.9w 14XS40    F51  C~1vXw      
2015 01  25.38834  08 26 00.316  -05 38 04.96  20.9w 14XS40    F51  C~1vXw      
2015 01  25.40139  08 26 00.248  -05 38 04.77  20.8w 14XS40    F51  C~1vXw      
2015 01  25.41447  08 26 00.168  -05 38 04.45  20.9w 14XS40    F51  C~1vXw      
2015 02  19.35418  08 23 51.161  -05 25 28.78  20.9w 14XS40    F51  C~1vXw      
2015 02  19.36703  08 23 51.098  -05 25 28.31  20.9w 14XS40    F51  C~1vXw      
2015 02  19.37986  08 23 51.037  -05 25 27.83  20.9w 14XS40    F51  C~1vXw      
2015 02  19.39268  08 23 50.975  -05 25 27.31  20.8w 14XS40    F51  C~1vXw      
2015 02  20.37632  08 23 46.356  -05 24 50.21  20.8w 14XS40    F51  C~1vXw      
2015 02  20.38917  08 23 46.294  -05 24 49.68  20.8w 14XS40    F51  C~1vXw      
2015 02  20.40208  08 23 46.235  -05 24 49.23  20.9w 14XS40    F51  C~1vXw      
2015 02  20.41502  08 23 46.172  -05 24 48.70  20.9w 14XS40    F51  C~1vXw      
2017 02  27.03504  08 37 27.84   -05 20 13.9         14XS40    I17  C~29EW      
2017 02  27.09502  08 37 27.54   -05 20 11.5         14XS40    I17  C~29EW      

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     0.10       0.00    -0.01
  2   0.0000     -0.44     0.08      -0.33     0.06
  3   0.0001     -1.08    -0.17      -0.97    -0.23
  4   1.3462  -1859.92     0.07    2313.22    -0.01
  5   1.3462  -1860.30    -0.03    2313.64    -0.09
  6   1.3463  -1860.54     0.01    2314.28     0.06
  7   1.3463  -1860.81     0.03    2314.85     0.12
  8   2.0204  12118.61     0.04    2842.11     0.02
  9   2.0204  12117.98    -0.10    2841.71    -0.05
 10   2.0204  12117.88     0.26    2841.32    -0.12
 11   2.1488   8986.23    -0.05    2138.81     0.12
 12   2.1488   8986.22    -0.01    2138.62    -0.07
 13   2.1488   8985.10    -0.06    2138.84     0.15
 14   2.1488   8985.07    -0.04    2138.67    -0.02
 15   2.1488   8983.97    -0.05    2138.81     0.12
 16   2.1488   8983.95    -0.01    2138.63    -0.06
 17   2.1489   8982.87    -0.02    2138.84     0.14
 18   2.1489   8982.80    -0.03    2138.67    -0.02
 19   2.1542   8820.24    -0.01    2140.98    -0.02
 20   2.1542   8819.12    -0.02    2141.03     0.01
 21   2.1543   8818.08     0.06    2140.97    -0.07
 22   2.1543   8816.84    -0.07    2140.99    -0.07
 23   2.2226   6762.40    -0.00    2410.10     0.04
 24   2.2226   6761.38    -0.01    2410.33     0.03
 25   2.2227   6760.37    -0.00    2410.57     0.03
 26   2.2227   6759.35    -0.01    2410.86     0.07
 27   2.2254   6683.37     0.00    2430.20    -0.01
 28   2.2254   6682.35    -0.02    2430.49     0.03
 29   2.2255   6681.38     0.03    2430.72    -0.00
 30   2.2255   6680.34    -0.00    2431.00     0.03
 31   4.2450  18582.94     0.26    5642.12    -0.02
 32   4.2452  18577.98    -0.20    5643.40    -0.15

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.

14XS40    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.713    42.724    42.701
ecceobj         0.172     0.172     0.172
incobj         27.557    27.557    27.557
qmin           34.699    34.817    34.875
qmax           50.587    50.581    50.504
amean          42.507    42.524    42.508
amin           42.129    42.148    42.133
amax           42.925    42.940    42.923
emean           0.156     0.156     0.153
emin            0.131     0.132     0.127
emax            0.181     0.179     0.177
imean          27.739    27.742    27.782
imin           27.160    27.186    27.189
imax           28.345    28.303    28.351
excite_mean     0.491     0.491     0.491
fracstop        1.000     1.000     1.000
cjmean          2.786     2.786     2.786

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       180.0     179.3     178.6
kozaiamp        180.0     180.0     180.0