Orbit Fit and Astrometric record for 13TP229

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: 13TP229   
# Created Fri Dec  3 02:12:10 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     14 observations of     14
# Arc:  17.27y
# First observation: 2001/08/19
#  Last observation: 2018/11/26
# Chi-squared of fit:    12.38 DOF:     22 RMS:  0.17
# Min/Max residuals:    -0.43    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.542631E-05  2.452687E-02 -7.788423E-06 -1.049795E-02  2.592617E-02 -3.082906E-03
# Covariance matrix:
  7.2203E-13 -8.9362E-14 -2.4154E-14  1.8174E-14 -2.5457E-14 -1.0152E-13
 -8.9362E-14  4.7459E-14  2.2238E-14 -1.6404E-14  1.1266E-13  8.9204E-14
 -2.4154E-14  2.2238E-14  6.8114E-13 -5.7261E-14  3.9713E-14  4.9455E-14
  1.8174E-14 -1.6404E-14 -5.7261E-14  1.0705E-14 -2.7245E-14 -3.6914E-14
 -2.5457E-14  1.1266E-13  3.9713E-14 -2.7245E-14  7.5772E-13  1.3274E-13
 -1.0152E-13  8.9204E-14  4.9455E-14 -3.6914E-14  1.3274E-13  2.0400E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.275027  -11.371875    0.390260   -0.004582   -0.934682  2452140.744803
# Heliocentric elements and errors
Epoch:              2452140.5000  =  2001/08/19
Mean Anomaly:          307.72340 +/-     0.025
Argument of Peri:      247.75349 +/-     0.032
Long of Asc Node:      167.44418 +/-     0.000
Inclination:            23.20214 +/-     0.000
Eccentricity:         0.14666598 +/-    0.0001
Semi-Major Axis:     42.68491486 +/-    0.0060
Time of Perihelion: 2466932.0921 +/-      19.5
Perihelion:          36.42448990 +/-    0.0056
Aphelion:            48.94533983 +/-    0.0072
Period (y)              278.8816 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.65561307 +/-    0.0013
Ecliptic Y           -8.16599624 +/-    0.0003
Ecliptic Z           -0.18546004 +/-    0.0000
Ecliptic XDOT         0.00017769 +/-    0.0000
Ecliptic YDOT         0.00260582 +/-    0.0000
Ecliptic ZDOT        -0.00110682 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.50924727 +/-    0.0012
Geocenter to KBO     38.57116826 +/-    0.0013
# Hcoef:  7.68

The following table shows the complete astrometric record for 13TP229. 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 (13TP229) followed by the observatory code and reference code for the source of the astrometry.

2001 08  19.24406  23 18 36.69   -04 45 05.6   22.1R 13TP229   807  C~55Nw      
2001 08  19.32752  23 18 36.36   -04 45 08.7         13TP229   807  C~55Nw      
2013 10  11.22388  00 31 06.689  -05 04 44.89  24.8g 13TP229   W84  C~55Nw      
2013 10  13.22262  00 30 57.274  -05 05 51.69  22.6z 13TP229   W84  C~55Nw      
2013 10  13.22399  00 30 57.297  -05 05 51.92  22.9i 13TP229   W84  C~55Nw      
2013 11  08.15807  00 29 08.420  -05 17 34.93  23.1r 13TP229   W84  C~55Nw      
2013 11  23.13356  00 28 23.525  -05 21 25.34  23.5i 13TP229   W84  C~55Nw      
2014 11  13.12408  00 35 26.601  -05 16 47.32  23.6r 13TP229   W84  C~55Nw      
2014 11  15.07583  00 35 20.196  -05 17 20.27  23.2i 13TP229   W84  C~55Nw      
2015 11  03.09457  00 42 41.769  -05 10 43.42  23.6r 13TP229   W84  C~55Nw      
2015 11  03.09593  00 42 41.744  -05 10 43.74  23.5g 13TP229   W84  C~55Nw      
2016 09  01.38805  00 54 02.246  -04 31 25.63  23.7r 13TP229   W84  C~55Nw      
2016 11  07.20621  00 49 01.293  -05 09 47.99  24.2r 13TP229   W84  C~55Nw      
2018 11  26.09365  01 01 19.199  -05 08 19.77  23.9r 13TP229   W84  C~55Nw      

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    -0.20       0.00     0.23
     2   0.0002      0.00     0.20       0.00    -0.10
     3  12.1451      0.00     0.17       0.00    -0.03
     4  12.1505      0.00    -0.43       0.00     0.01
     5  12.1505      0.00     0.01       0.00    -0.17
     6  12.2215      0.00     0.14       0.00    -0.11
     7  12.2625      0.00     0.22       0.00    -0.04
     8  13.2344      0.00     0.08       0.00    -0.02
     9  13.2398      0.00     0.08       0.00    -0.10
    10  14.2063      0.00    -0.06       0.00     0.15
    11  14.2063      0.00    -0.35       0.00    -0.14
    12  15.0367      0.00     0.10       0.00     0.12
    13  15.2196      0.00     0.04       0.00    -0.02
    14  17.2700      0.00     0.05       0.00     0.25

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.

13TP229    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.890    42.890    42.890
ecceobj         0.148     0.148     0.148
incobj         23.151    23.151    23.151
qmin           35.786    35.803    35.787
qmax           49.806    49.834    49.817
amean          42.646    42.646    42.646
amin           42.292    42.299    42.294
amax           43.038    43.037    43.038
emean           0.140     0.140     0.140
emin            0.123     0.123     0.123
emax            0.158     0.158     0.158
imean          22.803    22.803    22.802
imin           22.230    22.219    22.211
imax           23.329    23.340    23.334
excite_mean     0.412     0.412     0.412
fracstop        1.000     1.000     1.000
cjmean          2.878     2.878     2.878

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       180.9     180.9     180.9
kozaiamp        180.0     179.9     179.9