Orbit Fit and Astrometric record for 14TW115

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: 14TW115   
# Created Mon Dec  6 02:12:44 2021
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:   4.15y
# First observation: 2014/10/03
#  Last observation: 2018/11/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000142   0.024200  -0.000016   0.002458   0.024922   0.000000
# Chi-squared of fit:     2.96 DOF:     16 RMS:  0.09
# Min/Max residuals:    -0.23    0.13
# Exact a, adot, b, bdot, g, gdot:
  1.505758E-05  2.446083E-02  1.665692E-06  2.513427E-03  2.490981E-02  1.870064E-03
# Covariance matrix:
  3.8600E-13 -1.1287E-13 -1.7549E-14 -1.3378E-14  2.3768E-13 -7.2294E-13
 -1.1287E-13  9.8368E-13 -4.7361E-14  1.6528E-13  2.6949E-13  1.3556E-11
 -1.7549E-14 -4.7361E-14  2.5938E-13 -8.8022E-14 -4.9997E-14 -6.5412E-13
 -1.3378E-14  1.6528E-13 -8.8022E-14  8.4863E-14  3.3498E-14  2.4275E-12
  2.3768E-13  2.6949E-13 -4.9997E-14  3.3498E-14  5.4490E-13  3.4547E-12
 -7.2294E-13  1.3556E-11 -6.5412E-13  2.4275E-12  3.4547E-12  1.9837E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -22.412413   22.294454    0.218697   -0.373012   -0.904882  2456933.789668
# Heliocentric elements and errors
Epoch:              2456930.5000  =  2014/09/30
Mean Anomaly:           72.44978 +/-     0.059
Argument of Peri:      203.33214 +/-     0.073
Long of Asc Node:       97.07369 +/-     0.001
Inclination:            22.57811 +/-     0.000
Eccentricity:         0.07152966 +/-    0.0006
Semi-Major Axis:     41.75016044 +/-    0.0071
Time of Perihelion: 2437100.6135 +/-      15.3
Perihelion:          38.76378558 +/-    0.0252
Aphelion:            44.73653529 +/-    0.0255
Period (y)              269.7711 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.32402394 +/-    0.0010
Ecliptic Y           14.25003821 +/-    0.0004
Ecliptic Z          -15.30602242 +/-    0.0005
Ecliptic XDOT        -0.00075126 +/-    0.0000
Ecliptic YDOT         0.00259492 +/-    0.0000
Ecliptic ZDOT         0.00017713 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.05026892 +/-    0.0009
Geocenter to KBO     40.14482247 +/-    0.0012
# Hcoef:  7.53

The following table shows the complete astrometric record for 14TW115. 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 (14TW115) followed by the observatory code and reference code for the source of the astrometry.

2014 10  03.28889  01 55 51.383  -12 08 24.68  23.9i 14TW115   W84  C~55SO      
2014 10  03.29303  01 55 51.354  -12 08 24.75  24.3r 14TW115   W84  C~55SO      
2014 11  21.22856  01 52 03.748  -12 23 18.97  23.8r 14TW115   W84  C~55SO      
2014 11  21.22993  01 52 03.738  -12 23 19.13  23.4i 14TW115   W84  C~55SO      
2014 12  12.16843  01 50 50.271  -12 20 44.12  23.4i 14TW115   W84  C~55SO      
2014 12  20.14654  01 50 30.631  -12 18 14.80  23.3r 14TW115   W84  C~55SO      
2016 09  07.29378  02 07 30.109  -10 33 50.04  23.9r 14TW115   W84  C~55SO      
2017 10  16.24533  02 09 54.862  -10 15 30.08  23.8r 14TW115   W84  C~55SO      
2017 12  14.07040  02 05 42.201  -10 22 53.00  23.0i 14TW115   W84  C~55SO      
2018 01  09.08918  02 04 54.811  -10 12 38.40  22.6r 14TW115   W84  C~55SO      
2018 11  28.18958  02 11 34.202  -09 45 18.81  24.0r 14TW115   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     0.10       0.00    -0.01
     2   0.0000     -0.42    -0.02       0.10     0.10
     3   0.1340  -3428.86     0.06     421.63     0.11
     4   0.1340  -3429.05    -0.06     421.54    -0.02
     5   0.1913  -4370.53    -0.11     966.68    -0.02
     6   0.2132  -4582.25     0.04    1212.43    -0.16
     7   1.9302  11675.35     0.00    1330.57    -0.00
     8   3.0362  14079.55    -0.04    1520.30     0.09
     9   3.1972  10456.05    -0.12    2551.26    -0.23
    10   3.2684  10045.41     0.13    3388.32     0.08
    11   4.1530  16146.35     0.02    2624.16     0.05

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.

14TW115    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.109    42.133    42.086
ecceobj         0.076     0.078     0.075
incobj         22.587    22.587    22.587
qmin           37.958    37.963    38.014
qmax           45.935    46.008    45.836
amean          41.849    41.872    41.826
amin           41.530    41.551    41.506
amax           42.188    42.216    42.167
emean           0.076     0.077     0.075
emin            0.063     0.064     0.062
emax            0.089     0.091     0.088
imean          20.819    20.818    20.820
imin           20.382    20.378    20.384
imax           21.343    21.340    21.345
excite_mean     0.363     0.364     0.363
fracstop        1.000     1.000     1.000
cjmean          2.918     2.918     2.918

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       188.5     188.6     189.0
kozaiamp        179.9     180.0     179.9