Orbit Fit and Astrometric record for 14TU115

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: 14TU115   
# Created Tue Nov 30 02:12:49 2021
# Orbit generated from Bernstein formalism
# Fitting     18 observations of     18
# Arc:   4.16y
# First observation: 2014/10/02
#  Last observation: 2018/11/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000731   0.036859   0.000481  -0.015284   0.028279   0.000000
# Chi-squared of fit:     6.91 DOF:     30 RMS:  0.11
# Min/Max residuals:    -0.25    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.972248E-05  3.565889E-02 -8.272882E-06 -1.471509E-02  2.776949E-02 -8.442524E-03
# Covariance matrix:
  4.7152E-13 -2.9159E-13 -5.9508E-14  8.3388E-14  6.9440E-14 -1.3579E-12
 -2.9159E-13  3.9633E-13  1.0369E-13 -1.5514E-13  1.4655E-13  2.5371E-12
 -5.9508E-14  1.0369E-13  3.3456E-13 -1.6169E-13  3.5207E-14  7.7974E-13
  8.3388E-14 -1.5514E-13 -1.6169E-13  1.2945E-13 -6.3588E-14 -1.1648E-12
  6.9440E-14  1.4655E-13  3.5207E-14 -6.3588E-14  3.4641E-13  1.0511E-12
 -1.3579E-12  2.5371E-12  7.7974E-13 -1.1648E-12  1.0511E-12  1.9047E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -7.258389   29.452695    0.354607   -0.118395   -0.930922  2456932.825218
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:          359.32456 +/-     0.001
Argument of Peri:      225.48776 +/-     0.012
Long of Asc Node:      192.35956 +/-     0.000
Inclination:            23.55109 +/-     0.000
Eccentricity:         0.89806073 +/-    0.0001
Semi-Major Axis:    342.97236991 +/-    0.4387
Time of Perihelion: 2461283.2949 +/-       1.7
Perihelion:          34.96235199 +/-    0.0635
Aphelion:           650.98238784 +/-    0.8340
Period (y)             6351.8013 +/-     12.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.09418032 +/-    0.0007
Ecliptic Y           17.71931781 +/-    0.0004
Ecliptic Z           -4.55008754 +/-    0.0001
Ecliptic XDOT        -0.00261187 +/-    0.0000
Ecliptic YDOT         0.00256055 +/-    0.0000
Ecliptic ZDOT        -0.00133389 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.94203474 +/-    0.0006
Geocenter to KBO     36.01074900 +/-    0.0008
# Hcoef:  7.74

The following table shows the complete astrometric record for 14TU115. 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 (14TU115) followed by the observatory code and reference code for the source of the astrometry.

2014 10  02.32444  01 59 48.844  +04 28 46.33  23.5i 14TU115   W84  C~55SO      
2014 10  21.28184  01 58 22.328  +04 17 13.28  23.4i 14TU115   W84  C~55SO      
2014 10  29.23879  01 57 44.393  +04 12 37.43  23.4r 14TU115   W84  C~55SO      
2015 12  18.09791  02 03 24.576  +03 48 24.53  22.9i 14TU115   W84  C~55SO      
2016 01  12.05160  02 02 56.230  +03 47 55.19  23.4r 14TU115   W84  C~55SO      
2016 01  12.05720  02 02 56.208  +03 47 55.20  24.9g 14TU115   W84  C~55SO      
2016 09  09.30325  02 19 05.187  +04 31 29.44  23.3r 14TU115   W84  C~55SO      
2016 09  09.30463  02 19 05.198  +04 31 29.35  23.4i 14TU115   W84  C~55SO      
2016 10  29.20198  02 15 42.018  +04 01 26.93  23.0i 14TU115   W84  C~55SO      
2016 10  29.20336  02 15 42.005  +04 01 26.96  23.0r 14TU115   W84  C~55SO      
2016 11  03.18726  02 15 17.756  +03 58 42.67  23.5g 14TU115   W84  C~55SO      
2016 11  27.12189  02 13 29.113  +03 47 53.85  22.7i 14TU115   W84  C~55SO      
2016 11  27.12326  02 13 29.100  +03 47 53.89  22.3z 14TU115   W84  C~55SO      
2016 11  28.12171  02 13 25.087  +03 47 32.82  24.2g 14TU115   W84  C~55SO      
2017 09  25.30855  02 27 25.932  +04 16 00.97  23.6r 14TU115   W84  C~55SO      
2017 09  26.33480  02 27 22.167  +04 15 22.80  23.1i 14TU115   W84  C~55SO      
2018 11  16.14400  02 32 47.778  +03 39 40.70  22.4i 14TU115   W84  C~55SO      
2018 11  29.17895  02 31 48.200  +03 34 31.90  23.1r 14TU115   W84  C~55SO      

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     0.12       0.00    -0.02
     2   0.0519  -1454.20    -0.04    -199.97     0.07
     3   0.0737  -2082.23    -0.07    -261.12    -0.07
     4   1.2095   2187.30    -0.02   -3391.43    -0.14
     5   1.2778   1779.05     0.18   -3271.91     0.04
     6   1.2778   1778.74    -0.14   -3271.78     0.13
     7   1.9383  16328.58    -0.22   -5814.63     0.18
     8   1.9383  16328.71    -0.03   -5814.77     0.07
     9   2.0750  12838.09     0.02   -6467.93    -0.14
    10   2.0750  12837.92    -0.04   -6467.84    -0.04
    11   2.0886  12439.08     0.16   -6497.54    -0.25
    12   2.1541  10682.94     0.07   -6547.77     0.01
    13   2.1541  10682.77    -0.01   -6547.66     0.11
    14   2.1569  10618.92    -0.11   -6546.77     0.05
    15   2.9815  23128.58     0.21   -9266.38     0.05
    16   2.9843  23061.81    -0.02   -9283.19    -0.02
    17   4.1227  26997.06    -0.10  -12997.80    -0.12
    18   4.1584  26035.78     0.02  -12982.98     0.11

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.

14TU115    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       368.419   369.649   367.201
ecceobj         0.905     0.905     0.905
incobj         23.472    23.472    23.472
qmin           31.791    31.891    31.786
qmax          739.071   726.089   725.147
amean         337.601   337.458   336.908
amin          308.651   316.904   310.870
amax          386.950   380.486   379.944
emean           0.897     0.897     0.896
emin            0.883     0.886     0.884
emax            0.910     0.910     0.909
imean          23.014    23.065    23.152
imin           22.258    22.327    22.323
imax           24.139    24.142    24.183
excite_mean     0.978     0.979     0.979
fracstop        1.000     1.000     1.000
cjmean          2.815     2.814     2.815

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       236.1     235.4     234.4
kozaiamp         12.7      10.0      11.0