Orbit Fit and Astrometric record for 14WL602

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: 14WL602   
# Created Wed Dec  8 02:12:59 2021
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   4.03y
# First observation: 2014/11/21
#  Last observation: 2018/12/03
Preliminary a, adot, b, bdot, g, gdot:
  -0.000053   0.024173  -0.000007   0.000909   0.025108   0.000000
# Chi-squared of fit:     5.89 DOF:     20 RMS:  0.12
# Min/Max residuals:    -0.25    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.538735E-05  2.407653E-02  5.755605E-07  9.114294E-04  2.469704E-02 -8.522190E-04
# Covariance matrix:
  6.4566E-13 -6.6648E-13  2.0850E-14 -2.5855E-14 -1.7362E-13 -5.3780E-12
 -6.6648E-13  1.2569E-12 -5.1636E-14  5.8730E-14  2.9256E-14  1.1782E-11
  2.0850E-14 -5.1636E-14  3.2832E-13 -1.1153E-13  6.9184E-15 -5.1104E-13
 -2.5855E-14  5.8730E-14 -1.1153E-13  5.8417E-14 -2.2482E-15  5.7808E-13
 -1.7362E-13  2.9256E-14  6.9184E-15 -2.2482E-15  4.2086E-13  5.0074E-14
 -5.3780E-12  1.1782E-11 -5.1104E-13  5.7808E-13  5.0074E-14  1.1569E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -23.252574   15.562422   -0.672595   -0.285799   -0.665630  2456982.721058
# Heliocentric elements and errors
Epoch:              2456980.5000  =  2014/11/19
Mean Anomaly:          247.46221 +/-     0.351
Argument of Peri:       30.88447 +/-     0.349
Long of Asc Node:      100.07423 +/-     0.001
Inclination:            22.98535 +/-     0.000
Eccentricity:         0.02254396 +/-    0.0004
Semi-Major Axis:     40.79086799 +/-    0.0047
Time of Perihelion: 2486727.1948 +/-      92.6
Perihelion:          39.87128029 +/-    0.0183
Aphelion:            41.71045569 +/-    0.0183
Period (y)              260.5269 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.35244946 +/-    0.0009
Ecliptic Y           10.82473710 +/-    0.0003
Ecliptic Z          -15.98515881 +/-    0.0004
Ecliptic XDOT        -0.00076552 +/-    0.0000
Ecliptic YDOT         0.00255363 +/-    0.0000
Ecliptic ZDOT         0.00013023 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.16067076 +/-    0.0008
Geocenter to KBO     40.49067533 +/-    0.0011
# Hcoef:  7.62

The following table shows the complete astrometric record for 14WL602. 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 (14WL602) followed by the observatory code and reference code for the source of the astrometry.

2014 11  21.22028  01 33 38.348  -15 19 00.90  24.0r 14WL602   W84  C~55TE      
2014 12  20.13971  01 32 15.148  -15 12 04.79  24.1r 14WL602   W84  C~55TE      
2015 09  13.28647  01 43 57.467  -14 17 17.20  23.8r 14WL602   W84  C~55TE      
2015 10  07.20699  01 42 16.313  -14 31 21.30  23.0i 14WL602   W84  C~55TE      
2015 11  18.23319  01 39 00.145  -14 43 08.44  23.6i 14WL602   W84  C~55TE      
2015 12  01.09016  01 38 11.746  -14 42 12.94  23.7r 14WL602   W84  C~55TE      
2016 09  30.22961  01 47 52.838  -13 51 09.68  23.1r 14WL602   W84  C~55TE      
2016 09  30.23097  01 47 52.843  -13 51 09.71  24.0g 14WL602   W84  C~55TE      
2017 09  14.34516  01 54 04.098  -13 04 04.32  22.8i 14WL602   W84  C~55TE      
2017 12  14.13127  01 47 41.630  -13 26 20.50  24.3r 14WL602   W84  C~55TE      
2018 11  15.24383  01 54 30.643  -12 52 17.66  23.8i 14WL602   W84  C~55TE      
2018 12  02.13991  01 53 22.559  -12 51 59.72  24.0r 14WL602   W84  C~55TE      
2018 12  03.05592  01 53 19.358  -12 51 52.34  24.6g 14WL602   W84  C~55TE      

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     0.01       0.00     0.00
     2   0.0792   -940.27    -0.01     859.48    -0.07
     3   0.8106   9716.88    -0.08    -225.06    -0.20
     4   0.8761   8027.82     0.16    -398.03     0.09
     5   0.9911   5134.90    -0.25     107.36     0.14
     6   1.0263   4514.09     0.21     440.84     0.02
     7   1.8590  13495.13    -0.12    -198.45     0.10
     8   1.8590  13495.19     0.04    -198.51     0.05
     9   2.8149  19634.73     0.11     129.03     0.00
    10   3.0634  13961.10    -0.01    1229.27    -0.22
    11   3.9836  20288.41     0.01     611.51     0.04
    12   4.0299  19382.77    -0.13    1044.83     0.16
    13   4.0324  19342.94     0.08    1071.14    -0.12

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.

14WL602    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.132    41.148    41.116
ecceobj         0.018     0.017     0.019
incobj         22.993    22.993    22.992
qmin           39.430    39.433    39.373
qmax           42.555    42.527    42.588
amean          40.903    40.920    40.890
amin           40.604    40.620    40.590
amax           41.210    41.221    41.199
emean           0.022     0.021     0.023
emin            0.012     0.012     0.013
emax            0.033     0.032     0.034
imean          21.253    21.255    21.254
imin           20.803    20.803    20.798
imax           21.801    21.804    21.804
excite_mean     0.363     0.363     0.363
fracstop        1.000     1.000     1.000
cjmean          2.909     2.909     2.909

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       172.8     173.4     173.5
kozaiamp        180.0     180.0     179.9