Orbit Fit and Astrometric record for 13TE172

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: 13TE172   
# Created Fri Dec  3 02:12:04 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     54 observations of     54
# Arc:   5.04y
# First observation: 2013/10/04
#  Last observation: 2018/10/20
# Chi-squared of fit:    27.21 DOF:    102 RMS:  0.13
# Min/Max residuals:    -0.35    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.732947E-05  3.033754E-02  8.598300E-06  1.524002E-02  2.875646E-02  7.119085E-04
# Covariance matrix:
  1.9008E-13 -8.6834E-14  1.0464E-14 -2.0923E-14  3.7115E-14 -3.1269E-13
 -8.6834E-14  1.1824E-13 -4.3394E-14  5.6884E-14  6.5960E-14  8.0805E-13
  1.0464E-14 -4.3394E-14  1.4196E-13 -6.2626E-14 -4.3440E-14 -3.5612E-13
 -2.0923E-14  5.6884E-14 -6.2626E-14  4.7003E-14  4.5936E-14  4.5492E-13
  3.7115E-14  6.5960E-14 -4.3440E-14  4.5936E-14  1.4703E-13  6.2891E-13
 -3.1269E-13  8.0805E-13 -3.5612E-13  4.5492E-13  6.2891E-13  6.4367E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -14.515960   25.202062    0.247605   -0.242816   -0.938279  2456569.774008
# Heliocentric elements and errors
Epoch:              2456570.5000  =  2013/10/05
Mean Anomaly:            2.49655 +/-     0.012
Argument of Peri:      326.18036 +/-     0.020
Long of Asc Node:       50.84833 +/-     0.000
Inclination:            29.81333 +/-     0.000
Eccentricity:         0.26243344 +/-    0.0000
Semi-Major Axis:     48.39324066 +/-    0.0033
Time of Perihelion: 2455717.7653 +/-       3.9
Perihelion:          35.69323627 +/-    0.0031
Aphelion:            61.09324504 +/-    0.0046
Period (y)              336.6551 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.44196458 +/-    0.0004
Ecliptic Y           14.52650772 +/-    0.0002
Ecliptic Z           -8.71603707 +/-    0.0001
Ecliptic XDOT        -0.00084764 +/-    0.0000
Ecliptic YDOT         0.00279488 +/-    0.0000
Ecliptic ZDOT         0.00138781 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.71533458 +/-    0.0004
Geocenter to KBO     34.77482235 +/-    0.0005
# Hcoef:  7.13

The following table shows the complete astrometric record for 13TE172. 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 (13TE172) followed by the observatory code and reference code for the source of the astrometry.

2013 10  04.27323  01 54 28.053  -03 47 02.35  23.5g 13TE172   W84  C~4yR9      
2013 10  04.27323  01 54 28.05   -03 47 02.4   23.4g 13TE172   W84  C~3clO      
2013 10  27.12974  01 52 23.437  -03 55 53.27  23.5g 13TE172   W84  C~4yR9      
2013 10  27.12974  01 52 23.44   -03 55 53.3   23.5g 13TE172   W84  C~3clO      
2013 11  13.12040  01 50 51.968  -03 59 42.66  22.3z 13TE172   W84  C~4yR9      
2013 11  13.12040  01 50 51.97   -03 59 42.7   22.4z 13TE172   W84  C~3clO      
2014 08  18.37542  02 02 31.057  -01 59 53.00  22.0z 13TE172   W84  C~4yR9      
2014 10  02.34232  01 59 52.729  -02 19 39.17  23.3g 13TE172   W84  C~4yR9      
2014 10  02.34232  01 59 52.73   -02 19 39.2   23.6g 13TE172   W84  C~3clO      
2014 12  25.09950  01 53 24.87   -02 30 02.6   21.9r 13TE172   W84  C~3clO      
2014 12  26.06520  01 53 22.918  -02 29 42.47  22.2z 13TE172   W84  C~4yR9      
2014 12  26.06520  01 53 22.92   -02 29 42.5   22.5z 13TE172   W84  C~3clO      
2014 12  26.06658  01 53 22.906  -02 29 42.65  22.3i 13TE172   W84  C~4yR9      
2014 12  26.06658  01 53 22.91   -02 29 42.7   22.6i 13TE172   W84  C~3clO      
2015 01  16.054294 01 53 04.54   -02 19 53.0   22.4z 13TE172   W84  C~35bZ      
2015 01  16.05482  01 53 04.558  -02 19 52.96  22.8z 13TE172   W84  C~4yR9      
2015 01  19.049792 01 53 05.80   -02 18 06.1   22.4z 13TE172   W84  C~35bZ      
2015 01  19.05031  01 53 05.815  -02 18 06.02  22.7z 13TE172   W84  C~4yR9      
2016 01  12.05868  01 58 09.441  -00 58 05.59  22.3r 13TE172   W84  C~4yR9      
2016 01  12.05868  01 58 09.44   -00 58 05.6   22.6r 13TE172   W84  C~3clO      
2016 01  12.059514 01 58 09.46   -00 58 05.7   23.0g 13TE172   W84  C~35bZ      
2016 01  12.06004  01 58 09.462  -00 58 05.74  22.7g 13TE172   W84  C~4yR9      
2016 09  10.296157 02 11 47.38   +00 41 44.8   22.8r 13TE172   W84  C~35bZ      
2016 09  10.29669  02 11 47.381  +00 41 44.80  23.0r 13TE172   W84  C~4yR9      
2016 09  10.29669  02 11 47.38   +00 41 44.8   22.9r 13TE172   W84  C~3clO      
2016 09  10.29806  02 11 47.372  +00 41 44.95  24.0g 13TE172   W84  C~4yR9      
2016 09  10.39463  02 11 47.033  +00 41 42.62  22.4z 13TE172   W84  C~4yR9      
2016 09  10.39463  02 11 47.03   +00 41 42.6   22.5z 13TE172   W84  C~3clO      
2016 10  27.16787  02 07 59.608  +00 22 56.84  22.3r 13TE172   W84  C~4yR9      
2016 10  27.16787  02 07 59.61   +00 22 56.9   22.4r 13TE172   W84  C~3clO      
2016 10  27.16927  02 07 59.605  +00 22 56.81  22.2i 13TE172   W84  C~4yR9      
2016 10  27.16927  02 07 59.60   +00 22 56.8   22.3i 13TE172   W84  C~3clO      
2016 10  27.170104 02 07 59.57   +00 22 56.6   23.4g 13TE172   W84  C~35bZ      
2016 11  07.17116  02 06 58.635  +00 19 49.11  22.4z 13TE172   W84  C~4yR9      
2016 11  07.17116  02 06 58.63   +00 19 49.1   22.5z 13TE172   W84  C~3clO      
2016 11  11.18165  02 06 36.969  +00 18 54.87  22.5z 13TE172   W84  C~4yR9      
2016 11  11.18165  02 06 36.97   +00 18 54.9   22.5z 13TE172   W84  C~3clO      
2016 11  27.126840 02 05 16.96   +00 16 48.9   22.7r 13TE172   W84  C~35bZ      
2016 11  27.12737  02 05 16.964  +00 16 48.85  22.8r 13TE172   W84  C~4yR9      
2016 11  28.11615  02 05 12.42   +00 16 46.1   22.2i 13TE172   W84  C~3clO      
2016 11  28.117002 02 05 12.41   +00 16 46.3   23.2g 13TE172   W84  C~35bZ      
2017 08  27.408981 02 17 34.56   +02 11 56.5   22.4i 13TE172   W84  C~35bZ      
2017 08  27.40951  02 17 34.563  +02 11 56.47  22.2i 13TE172   W84  C~4yR9      
2017 08  27.41993  02 17 34.534  +02 11 56.05  22.6z 13TE172   W84  C~4yR9      
2017 09  18.334687 02 16 26.60   +02 04 00.7   22.6r 13TE172   W84  C~35bZ      
2017 09  18.33522  02 16 26.598  +02 04 00.64  22.6r 13TE172   W84  C~4yR9      
2017 09  18.336088 02 16 26.58   +02 04 00.6   23.3g 13TE172   W84  C~35bZ      
2017 09  18.33661  02 16 26.587  +02 04 00.44  22.8g 13TE172   W84  C~4yR9      
2017 10  27.253773 02 13 10.96   +01 48 57.3   23.7g 13TE172   W84  C~35bZ      
2017 10  27.25430  02 13 10.962  +01 48 57.21  23.4g 13TE172   W84  C~4yR9      
2017 11  01.164572 02 12 43.54   +01 47 25.2   22.1z 13TE172   W84  C~35ba      
2017 11  01.16510  02 12 43.538  +01 47 25.28  22.3z 13TE172   W84  C~4yR9      
2018 09  09.28945  02 22 07.925  +03 32 27.70  22.5z 13TE172   W84  C~4yR9      
2018 10  20.21247  02 19 01.610  +03 17 06.92  22.5z 13TE172   W84  C~4yR9      

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    -0.11       0.00    -0.09
     2   0.0000      0.00    -0.06       0.00    -0.04
     3   0.0626      0.00     0.15       0.00     0.01
     4   0.0626      0.00     0.11       0.00     0.04
     5   0.1091      0.00    -0.05       0.00     0.03
     6   0.1091      0.00    -0.02       0.00    -0.01
     7   0.8709      0.00    -0.21       0.00     0.26
     8   0.9940      0.00     0.02       0.00     0.04
     9   0.9940      0.00     0.00       0.00     0.07
    10   1.2233      0.00     0.08       0.00    -0.18
    11   1.2260      0.00     0.21       0.00     0.07
    12   1.2260      0.00     0.18       0.00     0.10
    13   1.2260      0.00     0.10       0.00    -0.16
    14   1.2260      0.00     0.04       0.00    -0.11
    15   1.2835      0.00    -0.17       0.00     0.05
    16   1.2835      0.00     0.10       0.00     0.08
    17   1.2917      0.00    -0.35       0.00    -0.21
    18   1.2917      0.00    -0.12       0.00    -0.15
    19   2.2718      0.00    -0.02       0.00     0.04
    20   2.2718      0.00    -0.01       0.00     0.05
    21   2.2718      0.00     0.29       0.00    -0.08
    22   2.2718      0.00     0.32       0.00    -0.14
    23   2.9350      0.00    -0.03       0.00    -0.09
    24   2.9350      0.00    -0.00       0.00    -0.08
    25   2.9350      0.00     0.01       0.00    -0.08
    26   2.9350      0.00    -0.05       0.00     0.10
    27   2.9353      0.00     0.02       0.00     0.11
    28   2.9353      0.00     0.06       0.00     0.13
    29   3.0634      0.00     0.09       0.00     0.13
    30   3.0634      0.00     0.06       0.00     0.07
    31   3.0634      0.00     0.14       0.00     0.06
    32   3.0634      0.00     0.06       0.00     0.05
    33   3.0634      0.00    -0.32       0.00    -0.13
    34   3.0935      0.00    -0.06       0.00     0.03
    35   3.0935      0.00     0.01       0.00     0.04
    36   3.1045      0.00     0.09       0.00    -0.04
    37   3.1045      0.00     0.08       0.00    -0.07
    38   3.1481      0.00    -0.06       0.00     0.15
    39   3.1481      0.00     0.04       0.00     0.10
    40   3.1508      0.00    -0.23       0.00     0.07
    41   3.1508      0.00    -0.32       0.00     0.28
    42   3.8963      0.00     0.06       0.00     0.06
    43   3.8963      0.00     0.12       0.00     0.04
    44   3.8964      0.00     0.03       0.00    -0.19
    45   3.9564      0.00     0.07       0.00     0.14
    46   3.9564      0.00     0.07       0.00     0.10
    47   3.9564      0.00    -0.14       0.00     0.08
    48   3.9564      0.00    -0.01       0.00    -0.07
    49   4.0629      0.00    -0.09       0.00     0.04
    50   4.0629      0.00    -0.02       0.00    -0.04
    51   4.0764      0.00    -0.01       0.00    -0.30
    52   4.0764      0.00     0.00       0.00    -0.21
    53   4.9309      0.00     0.16       0.00     0.05
    54   5.0430      0.00     0.00       0.00    -0.09

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.

13TE172    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        48.731    48.731    48.731
ecceobj         0.268     0.268     0.268
incobj         29.794    29.794    29.794
qmin           34.231    34.228    34.255
qmax           62.927    62.955    62.964
amean          48.264    48.264    48.263
amin           47.741    47.741    47.722
amax           48.833    48.849    48.861
emean           0.266     0.266     0.266
emin            0.244     0.243     0.243
emax            0.289     0.290     0.289
imean          28.701    28.708    28.707
imin           28.048    28.044    28.039
imax           29.274    29.280    29.270
excite_mean     0.549     0.549     0.549
fracstop        1.000     1.000     1.000
cjmean          2.765     2.765     2.765

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       168.7     168.4     168.6
kozaiamp        180.0     179.9     179.9