Orbit Fit and Astrometric record for 14WL509

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: 14WL509   
# Created Wed Oct 24 01:09:49 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   24 observations of   24
# Arc:   6.21y
# First observation: 2012/01/24
#  Last observation: 2018/04/10
# Chi-squared of fit:    13.67 DOF:   42 RMS:  0.13
# Min/Max residuals:    -0.34    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.561271E-05  2.304980E-02  2.507089E-06  3.534916E-03  2.437929E-02 -2.990542E-03
# Covariance matrix:
  3.6280E-13 -1.8527E-13  2.0039E-14 -1.9472E-14 -8.2539E-14 -9.3074E-13
 -1.8527E-13  1.6171E-13 -2.5688E-14  2.5432E-14  6.2141E-14  1.1790E-12
  2.0039E-14 -2.5688E-14  2.7020E-13 -7.7913E-14 -2.2117E-15 -2.3850E-13
 -1.9472E-14  2.5432E-14 -7.7913E-14  3.1525E-14 -4.9652E-16  2.4038E-13
 -8.2539E-14  6.2141E-14 -2.2117E-15 -4.9652E-16  2.5433E-13  1.8211E-13
 -9.3074E-13  1.1790E-12 -2.3850E-13  2.4038E-13  1.8211E-13  1.0818E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -12.689740  130.012607    0.106993   -0.215055   -0.955211  2455950.855346
# Heliocentric elements and errors
Epoch:              2455950.5000  =  2012/01/24
Mean Anomaly:          272.19902 +/-     0.035
Argument of Peri:       46.99724 +/-     0.025
Long of Asc Node:      184.20326 +/-     0.001
Inclination:            15.13669 +/-     0.000
Eccentricity:         0.12716240 +/-    0.0001
Semi-Major Axis:     41.50815216 +/-    0.0031
Time of Perihelion: 2479773.4425 +/-      12.7
Perihelion:          36.22987593 +/-    0.0063
Aphelion:            46.78642839 +/-    0.0067
Period (y)              267.4289 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.27380657 +/-    0.0005
Ecliptic Y           31.46850525 +/-    0.0006
Ecliptic Z           -9.01050617 +/-    0.0002
Ecliptic XDOT        -0.00183245 +/-    0.0000
Ecliptic YDOT        -0.00184402 +/-    0.0000
Ecliptic ZDOT         0.00046115 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.97351052 +/-    0.0006
Geocenter to KBO     41.01853277 +/-    0.0008
# Hcoef:  5.94

The following table shows the complete astrometric record for 14WL509. 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 (14WL509) followed by the observatory code and reference code for the source of the astrometry.

2012 01  24.35458  08 36 14.540  +05 29 24.08  22.0w 14WL509   F51  C~2dYx      
2012 01  24.36855  08 36 14.485  +05 29 24.21  22.1w 14WL509   F51  C~2dYx      
2012 01  24.38253  08 36 14.422  +05 29 24.58  22.1w 14WL509   F51  C~2dYx      
2012 01  24.39654  08 36 14.340  +05 29 24.80  22.1w 14WL509   F51  C~2dYx      
2014 11  23.55968  08 55 49.606  +04 57 38.42  22.4w 14WL509   F51  C~1vXr      
2014 11  23.58502  08 55 49.586  +04 57 38.34  22.5w 14WL509   F51  C~1vXr      
2014 11  23.59776  08 55 49.576  +04 57 37.80  22.2w 14WL509   F51  C~1vXr      
2015 01  19.43557  08 52 47.307  +05 01 00.75  22.4w 14WL509   F51  C~1vXr      
2015 01  19.44731  08 52 47.244  +05 01 00.62  22.2w 14WL509   F51  C~1vXr      
2015 01  19.45911  08 52 47.208  +05 01 00.87  22.2w 14WL509   F51  C~1vXr      
2015 01  19.47092  08 52 47.142  +05 01 00.98  22.2w 14WL509   F51  C~1vXr      
2015 01  21.38438  08 52 38.141  +05 01 35.05  22.2w 14WL509   F51  C~1vXr      
2015 01  21.39928  08 52 38.060  +05 01 35.19  22.2w 14WL509   F51  C~1vXr      
2015 01  21.41265  08 52 37.996  +05 01 35.70  22.1w 14WL509   F51  C~1vXr      
2015 01  21.42611  08 52 37.926  +05 01 35.88  22.0w 14WL509   F51  C~1vXr      
2015 02  22.35558  08 50 07.819  +05 14 02.71  22.3w 14WL509   F51  C~1vXr      
2015 02  22.37005  08 50 07.748  +05 14 03.45  22.4w 14WL509   F51  C~1vXr      
2015 02  22.38422  08 50 07.679  +05 14 03.62  22.4w 14WL509   F51  C~1vXr      
2015 03  22.25181  08 48 26.974  +05 26 59.53  22.1w 14WL509   F51  C~1vXr      
2015 03  22.26555  08 48 26.943  +05 26 59.92  22.0w 14WL509   F51  C~1vXr      
2015 03  22.27934  08 48 26.910  +05 27 00.33  22.2w 14WL509   F51  C~1vXr      
2015 03  22.29308  08 48 26.856  +05 27 00.72  22.2w 14WL509   F51  C~1vXr      
2018 04  10.13701  09 04 03.476  +05 07 02.39  21.9R 14WL509   G37  C~2dYx      
2018 04  10.23580  09 04 03.317  +05 07 04.62        14WL509   G37  C~2dYx      

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    -0.14       0.00    -0.01
  2   0.0000      0.00     0.05       0.00    -0.14
  3   0.0001      0.00     0.13       0.00    -0.04
  4   0.0001      0.00    -0.07       0.00    -0.08
  5   2.8315      0.00    -0.12       0.00     0.09
  6   2.8316      0.00     0.01       0.00     0.29
  7   2.8316      0.00     0.07       0.00    -0.11
  8   2.9872      0.00     0.00       0.00     0.43
  9   2.9872      0.00    -0.10       0.00     0.10
 10   2.9873      0.00     0.20       0.00     0.14
 11   2.9873      0.00     0.06       0.00     0.04
 12   2.9926      0.00     0.11       0.00    -0.03
 13   2.9926      0.00    -0.03       0.00    -0.16
 14   2.9926      0.00    -0.03       0.00     0.11
 15   2.9927      0.00    -0.11       0.00     0.04
 16   3.0801      0.00     0.15       0.00    -0.34
 17   3.0801      0.00     0.05       0.00     0.01
 18   3.0802      0.00    -0.04       0.00    -0.20
 19   3.1565      0.00    -0.14       0.00    -0.01
 20   3.1565      0.00    -0.04       0.00     0.01
 21   3.1565      0.00     0.04       0.00     0.04
 22   3.1566      0.00    -0.20       0.00     0.05
 23   6.2089      0.00     0.09       0.00    -0.01
 24   6.2091      0.00    -0.09       0.00    -0.20

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.

14WL509    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.534    41.534    41.535
ecceobj         0.126     0.126     0.126
incobj         15.136    15.136    15.136
qmin           35.465    35.465    35.464
qmax           47.797    47.798    47.796
amean          41.485    41.486    41.485
amin           41.151    41.153    41.160
amax           41.857    41.855    41.855
emean           0.123     0.123     0.122
emin            0.105     0.106     0.106
emax            0.142     0.142     0.142
imean          15.660    15.665    15.672
imin           14.535    14.535    14.535
imax           16.639    16.663    16.639
excite_mean     0.297     0.297     0.297
fracstop        1.000     1.000     1.000
cjmean          2.968     2.968     2.968

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       178.2     178.1     178.6
kozaiamp        180.0     180.0     179.9