Orbit Fit and Astrometric record for 15TC361

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: 15TC361   
# Created Sat Nov 27 02:13:39 2021
# Orbit generated from Bernstein formalism
# Fitting     18 observations of     18
# Arc:   4.84y
# First observation: 2013/11/08
#  Last observation: 2018/09/11
Preliminary a, adot, b, bdot, g, gdot:
   0.000099   0.022080  -0.000004  -0.000938   0.023560   0.000000
# Chi-squared of fit:     8.62 DOF:     30 RMS:  0.12
# Min/Max residuals:    -0.31    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.335969E-05  2.208426E-02 -5.482530E-07 -9.392406E-04  2.398937E-02  1.405928E-03
# Covariance matrix:
  6.8411E-13 -4.2500E-13 -9.4810E-15  1.1115E-14 -9.9766E-14 -2.4230E-12
 -4.2500E-13  4.0676E-13  9.5198E-15 -1.1859E-14 -5.2014E-14  2.6015E-12
 -9.4810E-15  9.5198E-15  4.0810E-13 -1.2470E-13  7.3915E-15  8.3990E-14
  1.1115E-14 -1.1859E-14 -1.2470E-13  4.7847E-14 -5.1874E-15 -9.7714E-14
 -9.9766E-14 -5.2014E-14  7.3915E-15 -5.1874E-15  8.3668E-13  1.0485E-12
 -2.4230E-12  2.6015E-12  8.3990E-14 -9.7714E-14  1.0485E-12  2.1283E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.306427   15.601065   -0.495270   -0.079089   -0.853039  2456604.704858
# Heliocentric elements and errors
Epoch:              2456600.5000  =  2013/11/04
Mean Anomaly:          134.31181 +/-     0.104
Argument of Peri:      102.89102 +/-     0.094
Long of Asc Node:      131.03024 +/-     0.005
Inclination:             5.72228 +/-     0.000
Eccentricity:         0.10907155 +/-    0.0001
Semi-Major Axis:     39.32972729 +/-    0.0059
Time of Perihelion: 2422988.7182 +/-      24.8
Perihelion:          35.03997304 +/-    0.0075
Aphelion:            43.61948154 +/-    0.0084
Period (y)              246.6548 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           40.66841450 +/-    0.0015
Ecliptic Y           11.87300359 +/-    0.0004
Ecliptic Z           -3.85521528 +/-    0.0001
Ecliptic XDOT        -0.00053967 +/-    0.0000
Ecliptic YDOT         0.00246616 +/-    0.0000
Ecliptic ZDOT        -0.00012143 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.54116638 +/-    0.0015
Geocenter to KBO     41.68513322 +/-    0.0016
# Hcoef:  7.39

The following table shows the complete astrometric record for 15TC361. 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 (15TC361) followed by the observatory code and reference code for the source of the astrometry.

2013 11  08.20408  01 05 38.871  +01 14 29.69  23.4i 15TC361   W84  C~52Rq      
2013 11  22.16362  01 04 49.985  +01 10 30.68  22.7z 15TC361   W84  C~52Rq      
2015 10  10.323343 01 17 15.569  +02 18 39.51  23.9r 15TC361   568  C~2TuU      
2015 10  10.356680 01 17 15.415  +02 18 38.56  23.8r 15TC361   568  C~2TuU      
2015 10  10.391075 01 17 15.258  +02 18 37.62  23.9r 15TC361   568  C~2TuU      
2015 10  14.303346 01 16 57.670  +02 16 48.75  24.7g 15TC361   568  C~2TuU      
2015 10  14.336716 01 16 57.517  +02 16 47.80  24.8g 15TC361   568  C~2TuU      
2015 10  14.370923 01 16 57.363  +02 16 46.89  24.6g 15TC361   568  C~2TuU      
2016 08  16.38851  01 25 09.206  +03 07 34.95  22.8z 15TC361   W84  C~52Rq      
2016 08  26.32961  01 24 46.541  +03 04 08.57  24.4r 15TC361   W84  C~52Rq      
2016 10  29.15875  01 20 31.969  +02 35 47.67  22.8i 15TC361   W84  C~52Rq      
2016 10  29.16423  01 20 31.963  +02 35 47.59  23.7r 15TC361   W84  C~52Rq      
2016 11  05.14516  01 20 02.330  +02 33 06.35  23.2i 15TC361   W84  C~52Rq      
2017 08  28.33629  01 29 22.764  +03 28 48.61  23.0i 15TC361   W84  C~52Rq      
2017 08  28.33766  01 29 22.755  +03 28 48.74  23.6r 15TC361   W84  C~52Rq      
2017 09  14.32779  01 28 28.348  +03 21 47.48  23.2z 15TC361   W84  C~52Rq      
2018 09  11.35023  01 33 21.346  +03 48 30.90  23.2r 15TC361   W84  C~52Rq      
2018 09  11.35161  01 33 21.336  +03 48 30.70  23.5i 15TC361   W84  C~52Rq      

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     0.25       0.00    -0.01
     2   0.0382   -768.75    -0.26      60.21    -0.22
     3   1.9196  11134.33     0.04    -439.40     0.08
     4   1.9197  11131.83     0.01    -439.40     0.08
     5   1.9197  11129.28     0.02    -439.37     0.10
     6   1.9305  10843.27    -0.02    -439.34     0.12
     7   1.9305  10840.78    -0.04    -439.34     0.10
     8   1.9306  10838.29     0.01    -439.30     0.11
     9   2.7712  18855.46     0.06    -429.90    -0.03
    10   2.7984  18459.80    -0.07    -491.90     0.21
    11   2.9732  14259.14    -0.12    -612.40    -0.12
    12   2.9732  14259.03     0.16    -612.44    -0.17
    13   2.9923  13784.86    -0.01    -592.12     0.01
    14   3.8032  22892.84    -0.05    -695.47    -0.15
    15   3.8032  22892.76    -0.06    -695.30     0.03
    16   3.8498  21968.40     0.01    -776.30    -0.31
    17   4.8409  26700.46     0.09    -956.87     0.15
    18   4.8409  26700.25    -0.04    -957.00     0.03

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.

15TC361    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.539    39.557    39.520
ecceobj         0.106     0.106     0.107
incobj          5.715     5.715     5.715
qmin           33.910    33.866    33.833
qmax           45.464    45.504    45.514
amean          39.459    39.459    39.459
amin           39.045    39.063    39.038
amax           39.902    39.895    39.923
emean           0.122     0.121     0.122
emin            0.103     0.103     0.102
emax            0.141     0.141     0.141
imean           4.590     4.556     4.626
imin            3.882     3.873     3.883
imax            5.313     5.274     5.411
excite_mean     0.146     0.145     0.147
fracstop        1.000     1.000     1.000
cjmean          3.028     3.028     3.027

libcent 0       179.3     180.2     180.5
libamp  0        75.4      66.4      84.0
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       178.4     181.0     180.3
kozaiamp        180.0     180.0     180.0