Orbit Fit and Astrometric record for 13TV187

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: 13TV187   
# Created Wed Dec  8 02:12:09 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     36 observations of     36
# Arc:   6.95y
# First observation: 2013/10/11
#  Last observation: 2020/09/21
# Chi-squared of fit:    12.82 DOF:     66 RMS:  0.11
# Min/Max residuals:    -0.21    0.36
# Exact a, adot, b, bdot, g, gdot:
  1.589001E-05  2.309372E-02 -6.412696E-07 -1.846830E-03  2.450462E-02 -1.177604E-04
# Covariance matrix:
  1.5600E-13 -7.2820E-14 -2.8124E-15  3.0197E-15  3.1008E-14 -2.9045E-13
 -7.2820E-14  6.6368E-14  3.3312E-15 -4.1396E-15  4.5541E-15  3.9994E-13
 -2.8124E-15  3.3312E-15  1.1657E-13 -2.9999E-14 -8.5847E-16  2.3568E-14
  3.0197E-15 -4.1396E-15 -2.9999E-14  1.2045E-14 -1.8168E-15 -3.1348E-14
  3.1008E-14  4.5541E-15 -8.5847E-16 -1.8168E-15  2.1031E-13  1.8335E-13
 -2.9045E-13  3.9994E-13  2.3568E-14 -3.1348E-14  1.8335E-13  3.0343E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.210553   10.685896   -0.122312   -0.072606   -0.987864  2456576.717488
# Heliocentric elements and errors
Epoch:              2456576.5000  =  2013/10/11
Mean Anomaly:          185.22686 +/-     0.077
Argument of Peri:       37.37259 +/-     0.075
Long of Asc Node:      148.94975 +/-     0.002
Inclination:             6.14156 +/-     0.000
Eccentricity:         0.05395300 +/-    0.0001
Semi-Major Axis:     39.66469945 +/-    0.0028
Time of Perihelion: 2500873.7602 +/-      20.1
Perihelion:          37.52466997 +/-    0.0035
Aphelion:            41.80472892 +/-    0.0037
Period (y)              249.8127 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.94277719 +/-    0.0007
Ecliptic Y            7.85343225 +/-    0.0001
Ecliptic Z           -2.99631138 +/-    0.0001
Ecliptic XDOT        -0.00051238 +/-    0.0000
Ecliptic YDOT         0.00252880 +/-    0.0000
Ecliptic ZDOT        -0.00020468 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.79671663 +/-    0.0007
Geocenter to KBO     40.80867104 +/-    0.0008
# Hcoef:  7.13

The following table shows the complete astrometric record for 13TV187. 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 (13TV187) followed by the observatory code and reference code for the source of the astrometry.

2013 10  11.21671  00 45 53.073  +00 21 17.87  23.8g 13TV187   W84  C~4yRE      
2013 10  11.21671  00 45 53.07   +00 21 17.9   24.2g 13TV187   W84  C~3clQ      
2013 10  13.21291  00 45 44.143  +00 20 21.11  22.9i 13TV187   W84  C~4yRE      
2013 10  13.21291  00 45 44.14   +00 20 21.1   23.1i 13TV187   W84  C~3clQ      
2013 10  13.21708  00 45 44.135  +00 20 20.87  22.7z 13TV187   W84  C~4yRE      
2013 10  13.21708  00 45 44.14   +00 20 20.8   22.8z 13TV187   W84  C~3clQ      
2013 10  29.04765  00 44 36.133  +00 13 23.81  23.7g 13TV187   W84  C~4yRE      
2013 11  23.14833  00 43 10.224  +00 05 35.28  22.9i 13TV187   W84  C~4yRE      
2013 11  23.14970  00 43 10.226  +00 05 35.57  22.9z 13TV187   W84  C~4yRE      
2014 11  14.13269  00 48 37.923  +00 32 54.38  23.4r 13TV187   W84  C~4yRE      
2014 11  14.13269  00 48 37.92   +00 32 54.4   23.6r 13TV187   W84  C~3clQ      
2014 11  15.07192  00 48 34.808  +00 32 37.92  22.6z 13TV187   W84  C~4yRE      
2016 08  16.39537  01 04 29.570  +02 02 04.31  23.2i 13TV187   W84  C~4yRE      
2016 08  16.39674  01 04 29.573  +02 02 04.36  23.8z 13TV187   W84  C~4yRE      
2016 08  30.35544  01 03 50.331  +01 56 35.21  23.3r 13TV187   W84  C~4yRE      
2016 08  30.35544  01 03 50.33   +01 56 35.2   23.6r 13TV187   W84  C~3clQ      
2016 08  30.35681  01 03 50.325  +01 56 35.34  23.6g 13TV187   W84  C~4yRE      
2016 08  30.35681  01 03 50.32   +01 56 35.3   24.0g 13TV187   W84  C~3clQ      
2016 10  29.21651  00 59 38.326  +01 28 23.55  23.2r 13TV187   W84  C~4yRE      
2016 10  29.21651  00 59 38.32   +01 28 23.5   23.1r 13TV187   W84  C~3clQ      
2016 10  29.21788  00 59 38.320  +01 28 23.56  23.0i 13TV187   W84  C~4yRE      
2016 10  29.21788  00 59 38.32   +01 28 23.6   23.2i 13TV187   W84  C~3clQ      
2016 10  29.21926  00 59 38.309  +01 28 23.31  23.9g 13TV187   W84  C~4yRE      
2016 10  29.21926  00 59 38.31   +01 28 23.3   24.3g 13TV187   W84  C~3clQ      
2016 11  07.19435  00 59 02.024  +01 24 57.04  23.2i 13TV187   W84  C~4yRE      
2016 11  18.09231  00 58 23.183  +01 21 30.38  23.9r 13TV187   W84  C~4yRE      
2016 11  18.09231  00 58 23.18   +01 21 30.4   23.6r 13TV187   W84  C~3clQ      
2016 11  18.09367  00 58 23.172  +01 21 30.67  24.4g 13TV187   W84  C~4yRE      
2017 08  22.34106  01 09 15.085  +02 24 45.01  22.6i 13TV187   W84  C~4yRE      
2017 08  22.34244  01 09 15.065  +02 24 45.11  23.3r 13TV187   W84  C~4yRE      
2017 09  14.31955  01 07 58.024  +02 14 46.97  22.7z 13TV187   W84  C~4yRE      
2017 09  27.23909  01 07 03.818  +02 08 28.72  22.2z 13TV187   W84  C~4yRE      
2018 09  11.33485  01 13 12.254  +02 41 11.19  23.3r 13TV187   W84  C~4yRE      
2018 10  18.20169  01 10 32.851  +02 23 24.72  23.0z 13TV187   W84  C~4yRE      
2020 09  21.339320 01 22 36.447  +03 25 55.69  23.0G 13TV187   G37  C~49wo      
2020 09  21.396270 01 22 36.214  +03 25 53.96        13TV187   G37  C~49wo      

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    -0.14       0.00    -0.18
     2   0.0000      0.00    -0.10       0.00    -0.21
     3   0.0055      0.00    -0.01       0.00     0.00
     4   0.0055      0.00    -0.06       0.00    -0.01
     5   0.0055      0.00     0.15       0.00    -0.12
     6   0.0055      0.00     0.23       0.00    -0.19
     7   0.0488      0.00    -0.06       0.00     0.12
     8   0.1175      0.00    -0.03       0.00     0.05
     9   0.1175      0.00     0.06       0.00     0.36
    10   1.0922      0.00    -0.04       0.00    -0.04
    11   1.0922      0.00     0.01       0.00    -0.06
    12   1.0947      0.00     0.04       0.00    -0.05
    13   2.8479      0.00    -0.02       0.00     0.09
    14   2.8479      0.00     0.08       0.00     0.17
    15   2.8861      0.00     0.05       0.00    -0.02
    16   2.8861      0.00     0.03       0.00    -0.03
    17   2.8861      0.00    -0.05       0.00     0.10
    18   2.8861      0.00     0.03       0.00     0.14
    19   3.0500      0.00    -0.05       0.00     0.01
    20   3.0500      0.00     0.04       0.00     0.06
    21   3.0500      0.00     0.04       0.00     0.14
    22   3.0500      0.00     0.04       0.00     0.10
    23   3.0500      0.00    -0.02       0.00    -0.12
    24   3.0500      0.00    -0.03       0.00    -0.11
    25   3.0745      0.00    -0.04       0.00     0.14
    26   3.1044      0.00     0.03       0.00    -0.06
    27   3.1044      0.00     0.07       0.00    -0.08
    28   3.1044      0.00    -0.02       0.00     0.24
    29   3.8634      0.00     0.11       0.00    -0.12
    30   3.8635      0.00    -0.14       0.00     0.02
    31   3.9264      0.00     0.13       0.00    -0.02
    32   3.9617      0.00    -0.21       0.00    -0.05
    33   4.9175      0.00    -0.02       0.00     0.04
    34   5.0184      0.00    -0.05       0.00    -0.05
    35   6.9463      0.00     0.01       0.00    -0.04
    36   6.9464      0.00     0.09       0.00    -0.14

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.

13TV187    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        39.867    39.867    39.867
ecceobj         0.048     0.048     0.048
incobj          6.127     6.127     6.127
qmin           35.666    34.119    35.548
qmax           43.796    45.542    44.367
amean          39.583    39.575    39.620
amin           38.956    38.927    39.040
amax           40.005    40.024    40.040
emean           0.054     0.055     0.052
emin            0.015     0.001     0.003
emax            0.096     0.138     0.108
imean           3.921     6.641     5.223
imin            1.631     1.609     1.636
imax            7.369    11.508     7.280
excite_mean     0.089     0.132     0.108
fracstop        1.000     1.000     1.000
cjmean          3.045     3.033     3.042

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       179.3     194.3     178.9
kozaiamp        179.9     180.0     180.0