Orbit Fit and Astrometric record for 14WG509

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: 14WG509   
# Created Fri Dec 15 02:38:05 2017
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   23
# Arc:   3.15y
# First observation: 2011/11/25
#  Last observation: 2015/01/19
Preliminary a, adot, b, bdot, g, gdot:
   0.000035   0.021931  -0.000024   0.002652   0.023935   0.000000
# Chi-squared of fit:     9.91 DOF:   40 RMS:  0.12
# Min/Max residuals:    -0.54    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.472270E-05  2.204316E-02  1.544577E-06  2.694761E-03  2.355519E-02  1.717146E-03
# Covariance matrix:
  3.6446E-13 -3.4477E-13  6.8862E-15 -2.9475E-14 -2.1950E-13 -3.4001E-12
 -3.4477E-13  2.8693E-12 -9.7445E-14  3.4537E-13  3.2194E-12  4.1176E-11
  6.8862E-15 -9.7445E-14  3.4432E-13 -1.2835E-13 -1.1898E-13 -1.4096E-12
 -2.9475E-14  3.4537E-13 -1.2835E-13  9.2104E-14  3.8230E-13  5.0636E-12
 -2.1950E-13  3.2194E-12 -1.1898E-13  3.8230E-13  3.9931E-12  4.6464E-11
 -3.4001E-12  4.1176E-11 -1.4096E-12  5.0636E-12  4.6464E-11  6.0218E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -20.742142   59.076019   -0.063647   -0.347972   -0.918907  2455890.944146
# Heliocentric elements and errors
Epoch:              2455890.5000  =  2011/11/25
Mean Anomaly:           94.56255 +/-     0.135
Argument of Peri:      184.45842 +/-     0.127
Long of Asc Node:      129.74164 +/-     0.002
Inclination:            21.39688 +/-     0.000
Eccentricity:         0.08110571 +/-    0.0011
Semi-Major Axis:     42.82397265 +/-    0.0043
Time of Perihelion: 2429003.3024 +/-      38.0
Perihelion:          39.35070375 +/-    0.0456
Aphelion:            46.29724155 +/-    0.0456
Period (y)              280.2455 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.85599816 +/-    0.0017
Ecliptic Y           34.93531937 +/-    0.0029
Ecliptic Z          -15.03541297 +/-    0.0013
Ecliptic XDOT        -0.00204891 +/-    0.0000
Ecliptic YDOT         0.00157687 +/-    0.0000
Ecliptic ZDOT         0.00022230 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.37640882 +/-    0.0025
Geocenter to KBO     42.45349458 +/-    0.0036
# Hcoef:  5.60

The following table shows the complete astrometric record for 14WG509. 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 (14WG509) followed by the observatory code and reference code for the source of the astrometry.

2011 11  25.44338  04 05 06.106  -00 20 00.95  22.0w 14WG509   F51  C~1vXr      
2011 11  25.46101  04 05 06.020  -00 20 01.24  22.1w 14WG509   F51  C~1vXr      
2011 11  25.47574  04 05 05.948  -00 20 01.35  21.9w 14WG509   F51  C~1vXr      
2011 11  25.49028  04 05 05.880  -00 20 01.53  21.9w 14WG509   F51  C~1vXr      
2014 01  21.24204  04 10 58.077  +00 33 27.28  22.3w 14WG509   F51  C~1vXr      
2014 01  21.25491  04 10 58.053  +00 33 27.27  22.1w 14WG509   F51  C~1vXr      
2014 01  21.26788  04 10 58.019  +00 33 27.64  22.2w 14WG509   F51  C~1vXr      
2014 01  21.28093  04 10 57.992  +00 33 27.87  22.0w 14WG509   F51  C~1vXr      
2014 11  21.46663  04 19 48.607  +00 53 58.43  22.0w 14WG509   F51  C~1vXr      
2014 11  21.47881  04 19 48.552  +00 53 58.40  21.9w 14WG509   F51  C~1vXr      
2014 11  21.49097  04 19 48.495  +00 53 58.18  21.9w 14WG509   F51  C~1vXr      
2014 11  21.50308  04 19 48.434  +00 53 58.05  21.8w 14WG509   F51  C~1vXr      
2014 11  23.45779  04 19 39.215  +00 53 33.76  22.1w 14WG509   F51  C~1vXr      
2014 11  23.46993  04 19 39.178  +00 53 33.59  22.0w 14WG509   F51  C~1vXr      
2014 11  23.48209  04 19 39.092  +00 53 33.64  22.2w 14WG509   F51  C~1vXr      
2014 11  23.49427  04 19 39.002  +00 53 33.24  22.2w 14WG509   F51  C~1vXr      
2015 01  09.27024  04 16 17.287  +00 54 03.42  22.3w 14WG509   F51  C~1vXr      
2015 01  09.28333  04 16 17.252  +00 54 03.50  22.0w 14WG509   F51  C~1vXr      
2015 01  09.29645  04 16 17.209  +00 54 03.74  21.9w 14WG509   F51  C~1vXr      
2015 01  19.22541  04 15 48.022  +00 56 44.22  22.2w 14WG509   F51  C~1vXr      
2015 01  19.23747  04 15 47.990  +00 56 44.21  22.3w 14WG509   F51  C~1vXr      
2015 01  19.24955  04 15 47.954  +00 56 44.52  22.3w 14WG509   F51  C~1vXr      
2015 01  19.26166  04 15 47.922  +00 56 44.84  22.2w 14WG509   F51  C~1vXr      

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     0.02       0.00     0.05
  2   0.0000     -1.32    -0.02      -0.02    -0.04
  3   0.0001     -2.40    -0.02       0.09     0.02
  4   0.0001     -3.44     0.01       0.13    -0.01
  5   2.1569   5825.60    -0.02    2061.81     0.15
  6   2.1569   5825.25     0.02    2061.87    -0.14
  7   2.1569   5824.83    -0.01    2062.34    -0.02
  8   2.1570   5824.48     0.04    2062.65    -0.07
  9   2.9898  13886.22    -0.00    1642.80    -0.13
 10   2.9898  13885.40     0.07    1642.94    -0.02
 11   2.9899  13884.51     0.07    1642.90    -0.08
 12   2.9899  13883.59     0.03    1642.96    -0.05
 13   2.9952  13742.64     0.03    1647.37     0.00
 14   2.9953  13742.06     0.34    1647.32    -0.09
 15   2.9953  13740.80    -0.03    1647.63     0.19
 16   2.9953  13739.39    -0.54    1647.52     0.03
 17   3.1234  10773.48    -0.06    2295.06     0.12
 18   3.1234  10772.98     0.06    2295.25    -0.00
 19   3.1235  10772.39     0.09    2295.62     0.06
 20   3.1507  10375.64     0.03    2542.33     0.11
 21   3.1507  10375.17    -0.02    2542.42    -0.12
 22   3.1507  10374.70    -0.06    2542.84    -0.03
 23   3.1508  10374.30    -0.04    2543.25     0.07

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.

14WG509    quality flag:2

Type:       SCATEXTD      3:2E  SCATEXTD

axisobj        42.939    42.952    42.926
ecceobj         0.082     0.083     0.082
incobj         21.395    21.395    21.395
qmin           38.155    38.179    38.200
qmax           47.333    47.360    47.340
amean          42.624    42.637    42.611
amin           42.299    42.309    42.273
amax           42.985    42.985    42.969
emean           0.086     0.086     0.086
emin            0.072     0.072     0.074
emax            0.102     0.102     0.102
imean          19.932    19.935    19.929
imin           19.443    19.454    19.437
imax           20.433    20.431    20.428
excite_mean     0.352     0.352     0.352
fracstop        1.000     1.000     1.000
cjmean          2.935     2.935     2.935

libcent 0      -180.0     167.1    -180.0
libamp  0      -180.0     153.1    -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       183.1     182.8     183.7
kozaiamp        180.0     180.0     179.9