Orbit Fit and Astrometric record for 14WA602

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: 14WA602   
# Created Fri Dec  3 02:12:55 2021
# Orbit generated from Bernstein formalism
# Fitting     18 observations of     18
# Arc:   3.94y
# First observation: 2014/11/18
#  Last observation: 2018/10/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000325   0.025601   0.000052  -0.003975   0.025698   0.000000
# Chi-squared of fit:     4.31 DOF:     30 RMS:  0.09
# Min/Max residuals:    -0.21    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.606863E-05  2.533061E-02 -2.689542E-06 -3.949839E-03  2.470843E-02  1.512343E-04
# Covariance matrix:
  4.6926E-13 -3.3613E-13 -3.3741E-14  3.8664E-14 -1.6202E-13 -2.1296E-12
 -3.3613E-13  4.0712E-13  4.5380E-14 -6.5637E-14  8.8471E-14  3.1144E-12
 -3.3741E-14  4.5380E-14  3.0067E-13 -1.1241E-13  2.9230E-14  4.1510E-13
  3.8664E-14 -6.5637E-14 -1.1241E-13  6.4073E-14  7.4222E-16 -5.5748E-13
 -1.6202E-13  8.8471E-14  2.9230E-14  7.4222E-16  4.6532E-13  1.2166E-12
 -2.1296E-12  3.1144E-12  4.1510E-13 -5.5748E-13  1.2166E-12  2.7700E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -29.955113  -13.219991   -0.920586   -0.180673   -0.313875  2456979.615518
# Heliocentric elements and errors
Epoch:              2456970.5000  =  2014/11/09
Mean Anomaly:           12.19647 +/-     0.088
Argument of Peri:      240.65007 +/-     0.112
Long of Asc Node:       94.44232 +/-     0.001
Inclination:            30.70048 +/-     0.000
Eccentricity:         0.11136308 +/-    0.0001
Semi-Major Axis:     45.74239731 +/-    0.0061
Time of Perihelion: 2453142.1774 +/-      27.7
Perihelion:          40.64838291 +/-    0.0076
Aphelion:            50.83641170 +/-    0.0086
Period (y)              309.3760 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.69690068 +/-    0.0009
Ecliptic Y           -7.20408870 +/-    0.0002
Ecliptic Z          -20.20869328 +/-    0.0006
Ecliptic XDOT         0.00043901 +/-    0.0000
Ecliptic YDOT         0.00277410 +/-    0.0000
Ecliptic ZDOT        -0.00038747 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.79417967 +/-    0.0009
Geocenter to KBO     40.47202117 +/-    0.0011
# Hcoef:  7.33

The following table shows the complete astrometric record for 14WA602. 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 (14WA602) followed by the observatory code and reference code for the source of the astrometry.

2014 11  18.11474  00 04 34.305  -32 28 30.72  23.4i 14WA602   W84  C~55TD      
2014 11  18.17750  00 04 34.135  -32 28 29.07  23.7r 14WA602   W84  C~55TD      
2014 11  25.10876  00 04 18.361  -32 25 00.03  24.2g 14WA602   W84  C~55TD      
2015 09  03.26995  00 17 01.744  -31 47 33.09  22.8z 14WA602   W84  C~55TD      
2016 09  07.38021  00 23 09.359  -31 19 39.94  22.8i 14WA602   W84  C~55TD      
2016 09  07.38159  00 23 09.352  -31 19 39.96  23.5r 14WA602   W84  C~55TD      
2016 09  07.38295  00 23 09.351  -31 19 39.80  23.8g 14WA602   W84  C~55TD      
2016 11  05.10673  00 18 19.416  -31 34 21.68  23.7r 14WA602   W84  C~55TD      
2016 11  05.10811  00 18 19.412  -31 34 21.61  23.2i 14WA602   W84  C~55TD      
2016 11  05.10949  00 18 19.407  -31 34 21.42  24.4g 14WA602   W84  C~55TD      
2016 11  23.02749  00 17 22.041  -31 27 58.49  22.7i 14WA602   W84  C~55TD      
2016 11  28.13980  00 17 10.891  -31 25 15.43  23.4r 14WA602   W84  C~55TD      
2016 11  28.14117  00 17 10.891  -31 25 15.44  23.7g 14WA602   W84  C~55TD      
2017 10  20.17137  00 25 57.832  -31 04 08.78  24.1g 14WA602   W84  C~55TD      
2018 09  17.36413  00 35 10.620  -30 19 51.78  23.6r 14WA602   W84  C~55TD      
2018 09  17.36549  00 35 10.614  -30 19 51.73  23.6i 14WA602   W84  C~55TD      
2018 09  17.36687  00 35 10.596  -30 19 51.99  23.7g 14WA602   W84  C~55TD      
2018 10  28.23291  00 31 43.065  -30 31 42.53  23.1i 14WA602   W84  C~55TD      

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     0.03       0.00     0.03
     2   0.0002     -1.15    -0.02       2.45    -0.02
     3   0.0191    -82.69     0.03     279.80     0.06
     4   0.7917   9537.06    -0.13   -2314.74    -0.01
     5   1.8050  14469.78    -0.00   -3165.55    -0.09
     6   1.8050  14469.69     0.01   -3165.52    -0.06
     7   1.8050  14469.76     0.18   -3165.37     0.09
     8   1.9658  10791.18     0.02   -2104.66    -0.07
     9   1.9658  10791.17     0.06   -2104.58    -0.04
    10   1.9658  10791.20     0.15   -2104.38     0.11
    11   2.0148  10334.92    -0.13   -1412.13    -0.10
    12   2.0288  10289.04    -0.03   -1200.05     0.05
    13   2.0288  10289.04    -0.03   -1200.06    -0.01
    14   2.9214  16821.50    -0.21   -3440.63    -0.00
    15   3.8309  24385.98     0.01   -4815.00    -0.02
    16   3.8309  24385.94     0.07   -4814.92     0.06
    17   3.8309  24385.60    -0.16   -4815.02    -0.05
    18   3.9428  21685.33     0.15   -4028.83     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.

14WA602    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.147    46.166    46.128
ecceobj         0.119     0.120     0.119
incobj         30.712    30.712    30.712
qmin           40.076    40.035    40.097
qmax           52.121    52.170    52.114
amean          45.962    45.980    45.943
amin           45.588    45.619    45.574
amax           46.354    46.378    46.342
emean           0.111     0.112     0.111
emin            0.098     0.099     0.099
emax            0.125     0.125     0.125
imean          29.148    29.148    29.147
imin           28.877    28.877    28.883
imax           29.384    29.394    29.380
excite_mean     0.500     0.500     0.500
fracstop        1.000     1.000     1.000
cjmean          2.800     2.800     2.800

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       181.8     181.8     181.9
kozaiamp        180.0     180.0     179.9