Orbit Fit and Astrometric record for 14WH602

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: 14WH602   
# Created Tue Nov 30 02:13:00 2021
# Orbit generated from Bernstein formalism
# Fitting     16 observations of     16
# Arc:   3.91y
# First observation: 2014/11/21
#  Last observation: 2018/10/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000072   0.034893  -0.000068  -0.007629   0.032348   0.000000
# Chi-squared of fit:     4.88 DOF:     26 RMS:  0.10
# Min/Max residuals:    -0.19    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.786952E-05  3.481715E-02 -3.274674E-06 -7.616813E-03  3.071322E-02  4.793077E-04
# Covariance matrix:
  3.3121E-13 -2.9536E-13 -1.3754E-14  4.2926E-14 -1.1897E-13 -1.6383E-12
 -2.9536E-13  5.5343E-13  3.7013E-14 -1.0672E-13  2.0540E-13  3.9976E-12
 -1.3754E-14  3.7013E-14  2.5215E-13 -1.0095E-13 -3.3307E-14  2.8146E-13
  4.2926E-14 -1.0672E-13 -1.0095E-13  7.7726E-14 -2.4892E-14 -8.4932E-13
 -1.1897E-13  2.0540E-13 -3.3307E-14 -2.4892E-14  1.3931E-12  2.0548E-12
 -1.6383E-12  3.9976E-12  2.8146E-13 -8.4932E-13  2.0548E-12  3.2164E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -24.619813    6.927107   -0.773572   -0.256197   -0.559541  2456982.705988
# Heliocentric elements and errors
Epoch:              2456980.5000  =  2014/11/19
Mean Anomaly:           12.62998 +/-     0.057
Argument of Peri:      228.94518 +/-     0.077
Long of Asc Node:      125.42799 +/-     0.001
Inclination:            26.74146 +/-     0.000
Eccentricity:         0.13155978 +/-    0.0001
Semi-Major Axis:     37.96091205 +/-    0.0069
Time of Perihelion: 2453983.3846 +/-      13.6
Perihelion:          32.96678295 +/-    0.0078
Aphelion:            42.95504115 +/-    0.0093
Period (y)              233.8908 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.89813982 +/-    0.0011
Ecliptic Y            4.41366094 +/-    0.0001
Ecliptic Z          -13.56419523 +/-    0.0005
Ecliptic XDOT        -0.00062081 +/-    0.0000
Ecliptic YDOT         0.00304661 +/-    0.0000
Ecliptic ZDOT        -0.00063495 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.12652351 +/-    0.0010
Geocenter to KBO     32.55927107 +/-    0.0013
# Hcoef:  8.39

The following table shows the complete astrometric record for 14WH602. 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 (14WH602) followed by the observatory code and reference code for the source of the astrometry.

2014 11  21.20521  01 05 45.810  -19 47 30.94  23.9r 14WH602   W84  C~55TE      
2014 11  21.20657  01 05 45.792  -19 47 30.69  24.3g 14WH602   W84  C~55TE      
2014 12  20.12305  01 04 30.873  -19 35 57.81  23.6r 14WH602   W84  C~55TE      
2014 12  22.07536  01 04 29.152  -19 34 42.06  23.4r 14WH602   W84  C~55TE      
2015 10  07.22638  01 18 14.463  -19 08 21.34  23.4r 14WH602   W84  C~55TE      
2015 11  06.11888  01 15 24.972  -19 20 19.36  23.9r 14WH602   W84  C~55TE      
2015 11  06.12024  01 15 24.970  -19 20 19.41  23.3i 14WH602   W84  C~55TE      
2015 11  15.20258  01 14 39.726  -19 20 56.39  23.4i 14WH602   W84  C~55TE      
2016 12  05.16148  01 21 39.344  -18 48 42.50  23.7i 14WH602   W84  C~55TE      
2016 12  05.16285  01 21 39.344  -18 48 42.42  23.5r 14WH602   W84  C~55TE      
2017 10  30.27387  01 32 44.387  -18 19 55.68  22.5i 14WH602   W84  C~55TE      
2017 11  10.13877  01 31 44.986  -18 22 13.09  23.8r 14WH602   W84  C~55TE      
2017 11  10.14012  01 31 44.973  -18 22 13.33  24.3g 14WH602   W84  C~55TE      
2017 12  07.06682  01 29 49.188  -18 18 43.86  22.9r 14WH602   W84  C~55TE      
2017 12  07.06820  01 29 49.198  -18 18 43.67  23.6i 14WH602   W84  C~55TE      
2018 10  18.30122  01 42 11.433  -17 43 15.44  24.2r 14WH602   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    -0.13
     2   0.0000     -0.13    -0.05       0.33     0.16
     3   0.0792   -670.70     0.02    1072.66    -0.07
     4   0.0845   -661.14     0.02    1151.65     0.18
     5   0.8762  10584.49    -0.10   -2409.47    -0.00
     6   0.9580   8105.11     0.02   -2012.84    -0.03
     7   0.9580   8105.06     0.07   -2012.87    -0.09
     8   0.9829   7510.63     0.04   -1769.34     0.01
     9   2.0396  13724.61    -0.05   -2624.95    -0.03
    10   2.0396  13724.64     0.03   -2624.88    -0.01
    11   2.9406  23033.08     0.17   -5330.95     0.14
    12   2.9704  22206.64     0.03   -5066.88     0.07
    13   2.9704  22206.36    -0.15   -5067.01    -0.10
    14   3.0441  20813.89    -0.19   -4128.21    -0.15
    15   3.0441  20814.11     0.07   -4128.11    -0.10
    16   3.9072  31377.67     0.06   -7131.11     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.

14WH602    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        38.281    38.302    38.260
ecceobj         0.139     0.140     0.139
incobj         26.717    26.717    26.717
qmin           31.817    31.593    32.002
qmax           44.514    46.566    44.204
amean          38.013    38.502    37.962
amin           37.565    37.738    37.580
amax           38.386    39.337    38.353
emean           0.134     0.147     0.128
emin            0.108     0.113     0.105
emax            0.161     0.185     0.156
imean          25.133    25.090    25.241
imin           24.082    23.982    24.238
imax           26.240    26.081    26.351
excite_mean     0.446     0.449     0.445
fracstop        1.000     1.000     1.000
cjmean          2.810     2.808     2.809

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       179.6     182.6     180.3
kozaiamp        180.0     180.0     179.9