Orbit Fit and Astrometric record for 15TX363

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: 15TX363   
# Created Sat Nov 27 02:13:40 2021
# Orbit generated from Bernstein formalism
# Fitting     21 observations of     21
# Arc:   4.08y
# First observation: 2014/10/29
#  Last observation: 2018/11/29
Preliminary a, adot, b, bdot, g, gdot:
   0.000046   0.024363  -0.000003  -0.003467   0.025157   0.000000
# Chi-squared of fit:     1.98 DOF:     36 RMS:  0.05
# Min/Max residuals:    -0.15    0.13
# Exact a, adot, b, bdot, g, gdot:
  1.526198E-05  2.444012E-02 -1.890385E-06 -3.470319E-03  2.516842E-02  4.997711E-04
# Covariance matrix:
  5.8019E-13 -6.3873E-13 -5.0721E-14  7.4117E-14 -8.9599E-14 -5.8679E-12
 -6.3873E-13  9.0012E-13  8.0984E-14 -1.1717E-13  1.1603E-13  9.2723E-12
 -5.0721E-14  8.0984E-14  2.5768E-13 -1.2901E-13 -1.0187E-15  9.1604E-13
  7.4117E-14 -1.1717E-13 -1.2901E-13  9.3717E-14 -1.4499E-14 -1.3205E-12
 -8.9599E-14  1.1603E-13 -1.0187E-15 -1.4499E-14  3.6647E-13  1.2019E-12
 -5.8679E-12  9.2723E-12  9.1604E-13 -1.3205E-12  1.2019E-12  1.0449E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.358936   28.212475   -0.124607   -0.261241   -0.951795  2456959.764918
# Heliocentric elements and errors
Epoch:              2456950.5000  =  2014/10/20
Mean Anomaly:          114.50833 +/-     0.636
Argument of Peri:      125.45255 +/-     0.627
Long of Asc Node:      147.15482 +/-     0.002
Inclination:            16.98594 +/-     0.000
Eccentricity:         0.02244183 +/-    0.0003
Semi-Major Axis:     40.29132067 +/-    0.0047
Time of Perihelion: 2427237.2439 +/-     165.0
Perihelion:          39.38710975 +/-    0.0145
Aphelion:            41.19553159 +/-    0.0146
Period (y)              255.7558 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.56966610 +/-    0.0008
Ecliptic Y           18.69043591 +/-    0.0004
Ecliptic Z          -10.52383582 +/-    0.0003
Ecliptic XDOT        -0.00130317 +/-    0.0000
Ecliptic YDOT         0.00231546 +/-    0.0000
Ecliptic ZDOT        -0.00037832 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.68347735 +/-    0.0007
Geocenter to KBO     39.73233103 +/-    0.0010
# Hcoef:  7.77

The following table shows the complete astrometric record for 15TX363. 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 (15TX363) followed by the observatory code and reference code for the source of the astrometry.

2014 10  29.26414  02 06 33.891  -03 32 10.23  23.4r 15TX363   W84  C~55X7      
2014 12  24.13208  02 03 04.327  -03 40 22.86  24.3r 15TX363   W84  C~55X7      
2015 10  10.523797 02 13 33.651  -03 04 43.76  23.8r 15TX363   568  C~2TuW      
2015 10  10.541921 02 13 33.568  -03 04 44.34  23.8r 15TX363   568  C~2TuW      
2015 10  10.581358 02 13 33.390  -03 04 45.59  23.7r 15TX363   568  C~2TuW      
2015 10  10.605157 02 13 33.280  -03 04 46.32  23.8r 15TX363   568  C~2TuW      
2015 10  14.525580 02 13 15.614  -03 06 49.35  24.5g 15TX363   568  C~2TuW      
2015 10  14.543733 02 13 15.530  -03 06 49.90  24.5g 15TX363   568  C~2TuW      
2015 10  14.606931 02 13 15.238  -03 06 51.83  24.5g 15TX363   568  C~2TuW      
2015 12  04.06528  02 09 30.394  -03 23 06.55  23.7i 15TX363   W84  C~55X7      
2015 12  04.06665  02 09 30.391  -03 23 06.58  23.7r 15TX363   W84  C~55X7      
2015 12  05.17199  02 09 26.424  -03 23 11.39  23.6r 15TX363   W84  C~55X7      
2016 09  11.31942  02 20 49.520  -02 30 21.14  22.9r 15TX363   W84  C~55X7      
2016 09  27.42649  02 19 55.29   -02 39 32.4   24.7g 15TX363   568  C~2eAH      
2016 09  27.54623  02 19 54.81   -02 39 36.4   24.7g 15TX363   568  C~2eAH      
2016 09  29.44699  02 19 47.38   -02 40 40.7   24.6g 15TX363   568  C~2eAH      
2016 11  27.11136  02 15 23.155  -03 04 09.89  24.3g 15TX363   W84  C~55X7      
2016 11  29.12447  02 15 15.133  -03 04 27.12  23.4r 15TX363   W84  C~55X7      
2017 10  29.27175  02 23 04.641  -02 37 09.38  24.0r 15TX363   W84  C~55X7      
2017 10  29.27312  02 23 04.626  -02 37 09.23  23.3i 15TX363   W84  C~55X7      
2018 11  29.19983  02 26 13.554  -02 27 38.26  24.2g 15TX363   W84  C~55X7      

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    -0.06
     2   0.1530  -3110.97     0.02     639.09    -0.03
     3   0.9480   6465.27     0.01    -671.99    -0.01
     4   0.9481   6463.90    -0.00    -672.10    -0.01
     5   0.9482   6460.96     0.01    -672.33    -0.00
     6   0.9482   6459.16    -0.02    -672.43     0.04
     7   0.9590   6167.89    -0.02    -694.19     0.01
     8   0.9590   6166.52    -0.01    -694.26     0.02
     9   0.9592   6161.74     0.00    -694.52     0.03
    10   1.0973   2665.31    -0.01    -420.11     0.05
    11   1.0973   2665.26     0.01    -420.12     0.02
    12   1.1004   2607.95    -0.07    -403.72     0.05
    13   1.8701  13319.44    -0.15   -1052.69    -0.03
    14   1.9142  12360.57     0.09   -1280.66    -0.09
    15   1.9145  12352.39     0.01   -1281.86     0.01
    16   1.9197  12225.06     0.08   -1302.58     0.02
    17   2.0803   8013.77    -0.04   -1219.86     0.08
    18   2.0859   7895.10     0.06   -1193.50    -0.13
    19   3.0007  15076.62     0.05   -2155.42    -0.09
    20   3.0007  15076.46    -0.00   -2155.20     0.13
    21   4.0847  17944.55    -0.04   -2629.69    -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.

15TX363    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.607    40.623    40.592
ecceobj         0.024     0.024     0.023
incobj         16.950    16.951    16.950
qmin           38.876    38.827    38.892
qmax           41.964    41.910    41.939
amean          40.349    40.364    40.334
amin           40.054    40.073    40.041
amax           40.647    40.670    40.635
emean           0.016     0.017     0.016
emin            0.000     0.002     0.001
emax            0.033     0.032     0.033
imean          16.223    16.224    16.222
imin           15.338    15.352    15.336
imax           17.204    17.197    17.220
excite_mean     0.280     0.280     0.280
fracstop        1.000     1.000     1.000
cjmean          2.969     2.969     2.969

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       183.7     183.8     183.8
kozaiamp        180.0     179.9     179.9