Orbit Fit and Astrometric record for 15TL361

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: 15TL361   
# Created Mon Dec  6 02:13:32 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     36 observations of     36
# Arc:   5.15y
# First observation: 2013/10/04
#  Last observation: 2018/11/28
# Chi-squared of fit:     7.83 DOF:     66 RMS:  0.08
# Min/Max residuals:    -0.29    0.16
# Exact a, adot, b, bdot, g, gdot:
  1.751282E-05  3.108965E-02  1.333566E-06  3.116252E-03  2.799188E-02 -1.239562E-03
# Covariance matrix:
  4.1042E-13 -3.0442E-13  2.5045E-14 -2.9878E-14  1.0208E-13 -1.6866E-12
 -3.0442E-13  2.8816E-13 -2.7836E-14  3.1170E-14 -4.5538E-14  1.7490E-12
  2.5045E-14 -2.7836E-14  1.4541E-13 -4.8803E-14 -1.3692E-15 -1.8230E-13
 -2.9878E-14  3.1170E-14 -4.8803E-14  2.4037E-14 -4.4503E-15  2.0367E-13
  1.0208E-13 -4.5538E-14 -1.3692E-15 -4.4503E-15  1.9731E-13 -2.8276E-13
 -1.6866E-12  1.7490E-12 -1.8230E-13  2.0367E-13 -2.8276E-13  1.1426E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -9.223749   15.668326    0.085211   -0.159658   -0.983845  2456569.684758
# Heliocentric elements and errors
Epoch:              2456570.5000  =  2013/10/05
Mean Anomaly:          347.52526 +/-     0.032
Argument of Peri:      319.78356 +/-     0.046
Long of Asc Node:       72.93609 +/-     0.001
Inclination:            10.61760 +/-     0.000
Eccentricity:         0.16645714 +/-    0.0001
Semi-Major Axis:     43.74478488 +/-    0.0041
Time of Perihelion: 2460232.4887 +/-      17.2
Perihelion:          36.46315319 +/-    0.0042
Aphelion:            51.02641657 +/-    0.0054
Period (y)              289.3328 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.93449661 +/-    0.0005
Ecliptic Y            9.71352284 +/-    0.0001
Ecliptic Z           -5.72629627 +/-    0.0001
Ecliptic XDOT        -0.00089559 +/-    0.0000
Ecliptic YDOT         0.00290736 +/-    0.0000
Ecliptic ZDOT         0.00032043 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.70918216 +/-    0.0005
Geocenter to KBO     35.72471381 +/-    0.0006
# Hcoef:  7.43

The following table shows the complete astrometric record for 15TL361. 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 (15TL361) followed by the observatory code and reference code for the source of the astrometry.

2013 10  04.18398  01 11 53.950  -02 21 04.51  24.4g 15TL361   W84  C~4yYX      
2013 12  21.09990  01 06 58.431  -02 37 29.60  22.8i 15TL361   W84  C~4yYX      
2013 12  21.09990  01 06 58.43   -02 37 29.6   23.2i 15TL361   W84  C~3cu2      
2013 12  21.10128  01 06 58.432  -02 37 29.75  22.7z 15TL361   W84  C~4yYX      
2014 10  23.23867  01 16 37.040  -01 39 00.72  22.3i 15TL361   W84  C~4yYX      
2014 10  23.23867  01 16 37.04   -01 39 00.6   22.5i 15TL361   W84  C~3cu2      
2014 10  23.24004  01 16 37.03   -01 39 00.9   22.9r 15TL361   W84  C~3cu2      
2014 10  28.24596  01 16 12.003  -01 41 01.81  23.0r 15TL361   W84  C~4yYX      
2014 10  28.24596  01 16 12.00   -01 41 01.8   23.0r 15TL361   W84  C~3cu2      
2014 11  15.09832  01 14 49.997  -01 46 34.76  23.3r 15TL361   W84  C~4yYX      
2014 11  15.09832  01 14 50.00   -01 46 34.8   23.4r 15TL361   W84  C~3cu2      
2014 11  17.11347  01 14 41.740  -01 47 01.14  23.3z 15TL361   W84  C~4yYX      
2015 09  04.30689  01 26 45.524  -00 23 30.32  21.7z 15TL361   W84  C~4yYX      
2015 09  04.30689  01 26 45.53   -00 23 30.3   21.8z 15TL361   W84  C~3cu2      
2015 09  04.30826  01 26 45.512  -00 23 30.31  22.4i 15TL361   W84  C~4yYX      
2015 09  04.30826  01 26 45.51   -00 23 30.3   22.4i 15TL361   W84  C~3cu2      
2015 10  10.297506 01 24 03.585  -00 41 53.76  23.0r 15TL361   568  C~2TuU      
2015 10  10.371897 01 24 03.202  -00 41 55.97  22.8r 15TL361   568  C~2TuU      
2015 10  10.401858 01 24 03.046  -00 41 56.86  22.9r 15TL361   568  C~2TuU      
2015 10  14.277557 01 23 43.176  -00 43 49.33  24.0g 15TL361   568  C~2TuU      
2015 10  14.280405 01 23 43.164  -00 43 49.43  24.0g 15TL361   568  C~2TuU      
2015 10  14.381660 01 23 42.634  -00 43 52.29  23.7g 15TL361   568  C~2TuU      
2015 11  07.13160  01 21 43.924  -00 53 29.82  23.6r 15TL361   W84  C~4yYX      
2015 11  07.13160  01 21 43.92   -00 53 29.8   23.5r 15TL361   W84  C~3cu2      
2016 08  30.34715  01 33 16.649  +00 29 20.12  23.9g 15TL361   W84  C~4yYX      
2016 10  23.18451  01 29 13.011  +00 02 58.10  22.6r 15TL361   W84  C~4yYX      
2016 10  23.18451  01 29 13.01   +00 02 58.1   22.9r 15TL361   W84  C~3cu2      
2016 10  23.18588  01 29 13.003  +00 02 58.26  23.5g 15TL361   W84  C~4yYX      
2016 10  28.15912  01 28 47.687  +00 00 54.33  22.8i 15TL361   W84  C~4yYX      
2016 10  28.15912  01 28 47.69   +00 00 54.3   22.9i 15TL361   W84  C~3cu2      
2017 08  22.40576  01 39 55.515  +01 23 33.95  22.3z 15TL361   W84  C~4yYX      
2017 09  14.30539  01 38 42.073  +01 13 18.85  22.7z 15TL361   W84  C~4yYX      
2018 11  15.08698  01 40 02.713  +01 37 17.93  22.9i 15TL361   W84  C~4yYX      
2018 11  15.08835  01 40 02.714  +01 37 17.98  22.6i 15TL361   W84  C~4yYX      
2018 11  28.03494  01 39 08.244  +01 34 24.04  23.1r 15TL361   W84  C~4yYX      
2018 11  28.03770  01 39 08.228  +01 34 23.98  24.0g 15TL361   W84  C~4yYX      

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    -0.02       0.00     0.09
     2   0.2133      0.00    -0.06       0.00     0.11
     3   0.2133      0.00    -0.08       0.00     0.11
     4   0.2133      0.00    -0.03       0.00    -0.06
     5   1.0515      0.00     0.14       0.00    -0.03
     6   1.0515      0.00     0.14       0.00    -0.15
     7   1.0515      0.00     0.10       0.00    -0.29
     8   1.0652      0.00     0.02       0.00     0.02
     9   1.0652      0.00     0.06       0.00     0.01
    10   1.1141      0.00     0.02       0.00    -0.06
    11   1.1141      0.00    -0.02       0.00    -0.02
    12   1.1196      0.00    -0.01       0.00     0.03
    13   1.9168      0.00     0.16       0.00     0.02
    14   1.9168      0.00     0.07       0.00    -0.00
    15   1.9168      0.00    -0.04       0.00     0.05
    16   1.9168      0.00    -0.07       0.00     0.06
    17   2.0154      0.00    -0.09       0.00     0.08
    18   2.0156      0.00    -0.04       0.00     0.06
    19   2.0157      0.00    -0.05       0.00     0.05
    20   2.0263      0.00    -0.10       0.00     0.07
    21   2.0263      0.00    -0.06       0.00     0.05
    22   2.0266      0.00    -0.08       0.00     0.08
    23   2.0916      0.00     0.04       0.00    -0.05
    24   2.0916      0.00     0.10       0.00    -0.07
    25   2.9053      0.00    -0.15       0.00     0.08
    26   3.0527      0.00     0.06       0.00    -0.07
    27   3.0527      0.00     0.07       0.00    -0.07
    28   3.0527      0.00     0.06       0.00     0.12
    29   3.0663      0.00    -0.01       0.00    -0.03
    30   3.0663      0.00    -0.05       0.00    -0.00
    31   3.8829      0.00     0.02       0.00    -0.21
    32   3.9456      0.00     0.03       0.00     0.05
    33   5.1140      0.00     0.01       0.00     0.02
    34   5.1140      0.00     0.12       0.00     0.09
    35   5.1495      0.00    -0.01       0.00     0.01
    36   5.1495      0.00    -0.09       0.00    -0.02

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.

15TL361    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE

axisobj        44.018    44.017    44.018
ecceobj         0.171     0.171     0.171
incobj         10.621    10.621    10.621
qmin           34.735    34.735    34.735
qmax           53.276    53.276    53.276
amean          43.727    43.727    43.727
amin           43.325    43.325    43.325
amax           44.212    44.212    44.212
emean           0.146     0.146     0.147
emin            0.072     0.072     0.072
emax            0.205     0.205     0.205
imean           9.044     9.182     8.921
imin            6.060     6.057     6.062
imax           11.873    12.224    11.867
excite_mean     0.219     0.221     0.217
fracstop        1.000     1.000     1.000
cjmean          3.041     3.040     3.041

libcent 0       181.5     178.3     178.5
libamp  0       177.5     176.5     176.4
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       265.9     263.6     268.3
kozaiamp         53.2      53.2      53.2