Orbit Fit and Astrometric record for 14TZ115

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: 14TZ115   
# Created Sun Dec  5 02:12:41 2021
# Orbit generated from Bernstein formalism
# Fitting     19 observations of     19
# Arc:   3.95y
# First observation: 2014/10/03
#  Last observation: 2018/09/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000245   0.019187  -0.000052   0.008420   0.022854   0.000000
# Chi-squared of fit:    10.31 DOF:     32 RMS:  0.13
# Min/Max residuals:    -0.23    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.348783E-05  1.878208E-02  6.661581E-06  8.285046E-03  2.312048E-02 -5.065801E-03
# Covariance matrix:
  3.7053E-13 -2.3932E-13  1.8048E-15 -3.3316E-14  3.0586E-13 -1.1458E-12
 -2.3932E-13  3.7404E-13 -3.1301E-14  1.1465E-13 -1.4427E-13  3.8921E-12
  1.8048E-15 -3.1301E-14  1.8223E-13 -7.9198E-14 -1.9608E-14 -4.9589E-13
 -3.3316E-14  1.1465E-13 -7.9198E-14  8.8025E-14  1.1302E-14  1.5799E-12
  3.0586E-13 -1.4427E-13 -1.9608E-14  1.1302E-14  5.8395E-13  3.5003E-13
 -1.1458E-12  3.8921E-12 -4.9589E-13  1.5799E-12  3.5003E-13  5.3499E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -9.732127   16.114179    0.111666   -0.168306   -0.982324  2456933.812268
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:          269.00497 +/-     0.056
Argument of Peri:       95.94358 +/-     0.034
Long of Asc Node:       36.46582 +/-     0.001
Inclination:            25.57889 +/-     0.001
Eccentricity:         0.25058856 +/-    0.0003
Semi-Major Axis:     41.56146589 +/-    0.0072
Time of Perihelion: 2481667.6627 +/-      13.9
Perihelion:          31.14663808 +/-    0.0134
Aphelion:            51.97629371 +/-    0.0152
Period (y)              267.9443 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.94027682 +/-    0.0014
Ecliptic Y           12.00306800 +/-    0.0004
Ecliptic Z           -7.31111430 +/-    0.0002
Ecliptic XDOT        -0.00103058 +/-    0.0000
Ecliptic YDOT         0.00201401 +/-    0.0000
Ecliptic ZDOT         0.00106848 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.23248640 +/-    0.0013
Geocenter to KBO     43.25169912 +/-    0.0014
# Hcoef:  7.10

The following table shows the complete astrometric record for 14TZ115. 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 (14TZ115) followed by the observatory code and reference code for the source of the astrometry.

2014 10  03.31149  01 14 18.309  -02 39 08.91  23.4r 14TZ115   W84  C~55SP      
2014 10  28.24320  01 12 26.061  -02 47 53.34  23.2r 14TZ115   W84  C~55SP      
2014 10  28.24457  01 12 26.063  -02 47 53.30  22.9i 14TZ115   W84  C~55SP      
2014 11  16.06857  01 11 09.656  -02 51 57.06  23.8g 14TZ115   W84  C~55SP      
2014 11  16.15316  01 11 09.353  -02 51 57.69  23.4r 14TZ115   W84  C~55SP      
2014 11  18.16847  01 11 02.085  -02 52 13.36  23.6r 14TZ115   W84  C~55SP      
2014 11  18.17263  01 11 02.069  -02 52 13.43  23.8i 14TZ115   W84  C~55SP      
2014 11  28.12134  01 10 29.668  -02 52 58.98  22.1z 14TZ115   W84  C~55SP      
2016 08  25.40953  01 23 16.138  -00 40 57.44  23.1i 14TZ115   W84  C~55SP      
2016 08  26.37386  01 23 13.461  -00 41 18.11  22.9r 14TZ115   W84  C~55SP      
2016 08  30.36094  01 23 01.737  -00 42 44.95  24.7g 14TZ115   W84  C~55SP      
2016 10  10.18355  01 20 17.902  -00 59 02.59  23.1i 14TZ115   W84  C~55SP      
2016 10  23.23837  01 19 18.065  -01 03 40.76  24.5g 14TZ115   W84  C~55SP      
2016 11  05.18380  01 18 21.062  -01 07 24.64  23.7i 14TZ115   W84  C~55SP      
2017 08  22.41422  01 26 42.978  +00 12 07.16  23.5i 14TZ115   W84  C~55SP      
2017 08  27.37907  01 26 29.856  +00 10 27.70  23.2r 14TZ115   W84  C~55SP      
2017 08  27.38044  01 26 29.855  +00 10 27.71  23.7g 14TZ115   W84  C~55SP      
2018 09  14.35386  01 28 51.773  +00 56 35.37  24.0r 14TZ115   W84  C~55SP      
2018 09  14.35523  01 28 51.765  +00 56 35.53  23.8i 14TZ115   W84  C~55SP      

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    -0.13       0.00    -0.21
     2   0.0683  -1754.58     0.13     158.52     0.06
     3   0.0683  -1754.54     0.26     158.55     0.08
     4   0.1198  -2905.68    -0.19     370.67    -0.07
     5   0.1200  -2910.12     0.01     371.82    -0.07
     6   0.1255  -3016.76    -0.03     398.93     0.08
     7   0.1256  -3017.00    -0.06     398.95     0.05
     8   0.1528  -3483.13     0.01     542.24     0.10
     9   1.8949  10174.69     0.25    3463.43     0.04
    10   1.8975  10129.56     0.06    3459.72    -0.13
    11   1.9084   9933.36    -0.23    3446.88     0.05
    12   2.0202   7284.06    -0.20    3485.35    -0.04
    13   2.0559   6347.42    -0.08    3572.18     0.31
    14   2.0914   5471.17     0.22    3692.81    -0.22
    15   2.8860  14278.08     0.01    5220.57    -0.10
    16   2.8996  14057.03    -0.04    5203.99    -0.02
    17   2.8996  14057.02     0.02    5204.00    -0.00
    18   3.9481  17104.99    -0.02    6953.47    -0.06
    19   3.9481  17104.94     0.02    6953.66     0.14

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.

14TZ115    quality flag:2

Type:       CENTAURS  CENTAURR  CENTAURR

axisobj        41.828    41.847    41.808
ecceobj         0.246     0.246     0.246
incobj         25.490    25.490    25.491
qmin           28.744    29.001    28.730
qmax           60.585    53.733    54.426
amean          43.055    40.834    40.531
amin           41.029    38.812    38.748
amax           45.322    42.540    42.381
emean           0.293     0.247     0.241
emin            0.234     0.197     0.194
emax            0.345     0.274     0.303
imean          23.614    24.196    24.661
imin           21.435    23.172    22.623
imax           25.283    25.204    26.113
excite_mean     0.497     0.479     0.482
fracstop        1.000     0.332     0.723
cjmean          2.794     2.800     2.789

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       165.4     206.5     186.0
kozaiamp        180.0     179.7     180.0