Orbit Fit and Astrometric record for 14WF602

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: 14WF602   
# Created Thu Dec  9 02:12:53 2021
# Orbit generated from Bernstein formalism
# Fitting     12 observations of     12
# Arc:   4.03y
# First observation: 2014/11/21
#  Last observation: 2018/12/01
Preliminary a, adot, b, bdot, g, gdot:
   0.000145   0.023712  -0.000199  -0.011901   0.024185   0.000000
# Chi-squared of fit:     6.23 DOF:     18 RMS:  0.13
# Min/Max residuals:    -0.24    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.663179E-05  2.436192E-02 -9.094660E-06 -1.223556E-02  2.332153E-02  7.345253E-03
# Covariance matrix:
  2.9106E-13 -2.7506E-13 -2.1094E-14  9.6272E-14 -4.2463E-14 -2.1809E-12
 -2.7506E-13  1.0188E-12  1.3492E-13 -4.8546E-13 -2.3312E-13  1.0683E-11
 -2.1094E-14  1.3492E-13  2.6313E-13 -1.4788E-13 -8.6677E-14  1.4894E-12
  9.6272E-14 -4.8546E-13 -1.4788E-13  2.9814E-13  1.3902E-13 -5.3705E-12
 -4.2463E-14 -2.3312E-13 -8.6677E-14  1.3902E-13  8.1942E-13 -2.5301E-12
 -2.1809E-12  1.0683E-11  1.4894E-12 -5.3705E-12 -2.5301E-12  1.1822E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -32.024467   -7.618873   -0.902848   -0.213294   -0.341378  2456982.635448
# Heliocentric elements and errors
Epoch:              2456980.5000  =  2014/11/19
Mean Anomaly:            7.52811 +/-     0.015
Argument of Peri:      192.95734 +/-     0.034
Long of Asc Node:      126.90097 +/-     0.001
Inclination:            40.27124 +/-     0.000
Eccentricity:         0.63945352 +/-    0.0005
Semi-Major Axis:    108.15198321 +/-    0.1437
Time of Perihelion: 2448389.7004 +/-       4.3
Perihelion:          38.99381701 +/-    0.0784
Aphelion:           177.31014940 +/-    0.2428
Period (y)             1124.7602 +/-      2.24
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.54857459 +/-    0.0014
Ecliptic Y           -3.97655919 +/-    0.0002
Ecliptic Z          -22.73823557 +/-    0.0009
Ecliptic XDOT         0.00034459 +/-    0.0000
Ecliptic YDOT         0.00283381 +/-    0.0000
Ecliptic ZDOT        -0.00167498 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.22775364 +/-    0.0013
Geocenter to KBO     42.87883472 +/-    0.0017
# Hcoef:  7.59

The following table shows the complete astrometric record for 14WF602. 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 (14WF602) followed by the observatory code and reference code for the source of the astrometry.

2014 11  21.13467  00 29 14.464  -32 05 20.52  24.0r 14WF602   W84  C~55TE      
2014 12  11.09693  00 28 40.861  -31 55 35.18  24.2r 14WF602   W84  C~55TE      
2014 12  12.11881  00 28 40.208  -31 54 56.90  23.3i 14WF602   W84  C~55TE      
2014 12  14.05246  00 28 39.155  -31 53 43.31  24.2r 14WF602   W84  C~55TE      
2014 12  16.06878  00 28 38.501  -31 52 23.06  24.1r 14WF602   W84  C~55TE      
2015 09  02.25817  00 42 13.897  -31 41 09.94  22.3Y 14WF602   W84  C~55TE      
2015 11  05.11889  00 37 26.970  -32 06 23.84  24.0r 14WF602   W84  C~55TE      
2016 12  19.11279  00 42 57.064  -31 44 13.32  24.4r 14WF602   W84  C~55TE      
2017 10  20.29298  00 52 51.787  -31 55 31.59  24.1r 14WF602   W84  C~55TE      
2017 10  20.29436  00 52 51.791  -31 55 31.58  24.7g 14WF602   W84  C~55TE      
2018 12  01.04670  00 57 15.707  -31 43 17.03  24.2r 14WF602   W84  C~55TE      
2018 12  01.04808  00 57 15.710  -31 43 16.77  24.9g 14WF602   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    -0.02       0.00     0.16
     2   0.0547   -106.39    -0.21     716.93     0.07
     3   0.0575    -95.98     0.35     754.70    -0.04
     4   0.0627    -73.70    -0.21     826.11    -0.24
     5   0.0683    -43.83     0.14     901.06     0.04
     6   0.7806   9417.61    -0.03   -3480.02     0.05
     7   0.9555   5483.02    -0.07   -3021.61    -0.08
     8   2.0780   9807.84    -0.01   -3911.62     0.06
     9   2.9135  16048.56     0.01   -8329.55    -0.00
    10   2.9135  16048.60     0.14   -8329.56    -0.05
    11   4.0271  19336.30    -0.13   -9453.24    -0.07
    12   4.0271  19336.46     0.05   -9453.04     0.08

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.

14WF602    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       110.648   111.107   110.193
ecceobj         0.647     0.649     0.646
incobj         40.224    40.224    40.223
qmin           36.307    36.098    36.108
qmax          186.762   188.063   186.086
amean         108.835   109.471   108.409
amin          106.839   107.466   106.358
amax          112.023   112.589   111.568
emean           0.650     0.653     0.650
emin            0.634     0.637     0.633
emax            0.667     0.670     0.668
imean          38.060    37.936    37.904
imin           37.256    37.118    37.060
imax           39.108    39.122    39.107
excite_mean     0.896     0.897     0.894
fracstop        1.000     1.000     1.000
cjmean          2.553     2.552     2.553

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       227.8     230.1     230.3
kozaiamp         34.8      36.8      36.8