Orbit Fit and Astrometric record for 14TU85

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: 14TU85    
# Created Tue Apr  1 01:10:06 2025
# Orbit generated from Bernstein formalism
# Fitting     17 observations of     17
# Arc:  37.75d
# First observation: 2014/09/22
#  Last observation: 2014/10/30
Preliminary a, adot, b, bdot, g, gdot:
   0.000001   0.034840   0.000000   0.000019   0.029196   0.000000
# Chi-squared of fit:     7.71 DOF:     28 RMS:  0.12
# Min/Max residuals:    -0.19    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.853688E-05  3.414537E-02 -4.089114E-07 -1.582620E-05  2.899889E-02  3.693206E-03
# Covariance matrix:
  2.8072E-13  2.3808E-11  3.3614E-14  1.4973E-12  5.8500E-12  6.4351E-10
  2.3808E-11  7.8178E-08  7.3652E-11  4.8539E-09  1.3740E-08  3.7127E-07
  3.3614E-14  7.3652E-11  2.7834E-13  2.0463E-12  1.3121E-11  4.2115E-10
  1.4973E-12  4.8539E-09  2.0463E-12  3.5368E-10  8.5104E-10  2.1953E-08
  5.8500E-12  1.3740E-08  1.3121E-11  8.5104E-10  2.4398E-09  7.5165E-08
  6.4351E-10  3.7127E-07  4.2115E-10  2.1953E-08  7.5165E-08  5.9540E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
  -16.763334   30.814652    0.529027   -0.246756   -0.819596  2456922.962148
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:           14.13239 +/-     8.665
Argument of Peri:      243.74430 +/-    16.427
Long of Asc Node:      121.16803 +/-     0.110
Inclination:            16.36510 +/-     0.001
Eccentricity:         0.26767487 +/-    0.0478
Semi-Major Axis:     47.25378769 +/-    1.7378
Time of Perihelion: 2452262.8526 +/-    2844.0
Perihelion:          34.60513627 +/-    2.5924
Aphelion:            59.90243911 +/-    3.1550
Period (y)              324.8352 +/-     17.92
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.36074381 +/-    0.0483
Ecliptic Y           16.90023703 +/-    0.0288
Ecliptic Z           -9.94587248 +/-    0.0169
Ecliptic XDOT        -0.00136970 +/-    0.0002
Ecliptic YDOT         0.00293488 +/-    0.0001
Ecliptic ZDOT        -0.00010188 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   35.30710507 +/-    0.0427
Geocenter to KBO     34.48408349 +/-    0.0587
# Hcoef:  8.51

The following table shows the complete astrometric record for 14TU85. 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 (14TU85) followed by the observatory code and reference code for the source of the astrometry.

2014 09  22.46137  02 17 55.14   -03 59 09.5   23.8i 14TU85    T09  C~8eQD      
2014 09  22.54196  02 17 54.80   -03 59 12.7   24.3i 14TU85    T09  C~8eQD      
2014 09  22.59771  02 17 54.58   -03 59 14.9   24.0i 14TU85    T09  C~8eQD      
2014 09  22.61204  02 17 54.53   -03 59 15.2   23.8i 14TU85    T09  C~8eQD      
2014 09  22.62294  02 17 54.49   -03 59 15.7   24.0i 14TU85    T09  C~8eQD      
2014 10  01.41911  02 17 16.90   -04 04 43.6   23.7z 14TU85    T09  C~8eQD      
2014 10  01.43543  02 17 16.81   -04 04 44.0   23.6z 14TU85    T09  C~8eQD      
2014 10  01.46614  02 17 16.66   -04 04 45.0   24.3z 14TU85    T09  C~8eQD      
2014 10  13.118119 02 16 20.49   -04 11 33.6   24.7g 14TU85    W84  C~1IXr      
2014 10  13.120336 02 16 20.49   -04 11 33.9   24.0r 14TU85    W84  C~1IXr      
2014 10  13.126481 02 16 20.45   -04 11 34.0   23.9z 14TU85    W84  C~1IXr      
2014 10  26.081267 02 15 12.79   -04 18 10.9   24.3g 14TU85    W84  C~1IXr      
2014 10  26.083461 02 15 12.77   -04 18 11.0   23.5r 14TU85    W84  C~1IXr      
2014 10  26.089618 02 15 12.76   -04 18 11.1   23.5z 14TU85    W84  C~1IXr      
2014 10  30.201273 02 14 50.78   -04 20 00.1   23.5r 14TU85    W84  C~1IXr      
2014 10  30.203634 02 14 50.76   -04 20 00.1   23.0i 14TU85    W84  C~1IXr      
2014 10  30.207431 02 14 50.74   -04 20 00.4   23.8z 14TU85    W84  C~1IXr      

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     0.08
     2   0.0002     -5.88    -0.19      -1.26    -0.00
     3   0.0004     -9.72    -0.12      -2.20    -0.13
     4   0.0004    -10.53     0.08      -2.23     0.05
     5   0.0004    -11.26     0.12      -2.49    -0.06
     6   0.0245   -651.99     0.20    -118.02    -0.19
     7   0.0246   -653.39     0.07    -117.93     0.07
     8   0.0247   -655.84     0.00    -118.11     0.22
     9   0.0566  -1585.31    -0.14    -214.54     0.13
    10   0.0566  -1585.41    -0.06    -214.82    -0.14
    11   0.0566  -1586.01    -0.14    -214.71     0.00
    12   0.0920  -2672.94     0.09    -241.75    -0.03
    13   0.0921  -2673.26    -0.04    -241.75    -0.03
    14   0.0921  -2673.43     0.31    -241.79    -0.08
    15   0.1033  -3019.72     0.01    -231.93     0.04
    16   0.1033  -3020.00    -0.07    -231.83     0.13
    17   0.1033  -3020.38    -0.14    -232.01    -0.06

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.

14TU85    quality flag:1

Type:       SCATNEAR  CENTAURS  SCATNEAR

axisobj        47.780    59.141    43.518
ecceobj         0.276     0.472     0.181
incobj         16.363    16.363    16.366
qmin           32.558    29.945    35.037
qmax           64.705    94.443    51.548
amean          48.007    60.229    43.128
amin           46.843    56.771    42.697
amax           49.088    62.968    43.603
emean           0.288     0.470     0.170
emin            0.245     0.431     0.152
emax            0.321     0.504     0.184
imean          15.459    15.698    15.101
imin           13.761    12.466    14.283
imax           17.309    17.902    15.829
excite_mean     0.393     0.543     0.311
fracstop        1.000     1.000     1.000
cjmean          2.958     2.903     2.976

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       187.2     173.4     177.5
kozaiamp        180.0     180.0     180.0