Orbit Fit and Astrometric record for 07TU431

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: 07TU431   
# Created Fri Nov  1 01:08:49 2024
# Orbit generated from Bernstein formalism
# Fitting      9 observations of      9
# Arc:  53.83d
# First observation: 2007/10/14
#  Last observation: 2007/12/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000001   0.077257  -0.000003  -0.007421   0.043649   0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit:     6.83 DOF:     13 RMS:  0.15
# Min/Max residuals:    -0.26    0.19
# Exact a, adot, b, bdot, g, gdot:
  2.383147E-05  6.509057E-02 -3.059064E-06 -7.627550E-03  4.171252E-02 -2.228803E-02
# Covariance matrix:
  4.1219E-13  1.1065E-10 -2.1318E-14  2.0934E-12  1.7364E-11 -1.4087E-09
  1.1065E-10  4.1201E-07 -9.1506E-11  8.8397E-09  5.8711E-08 -6.2020E-06
 -2.1318E-14 -9.1506E-11  3.2652E-13 -4.6794E-12 -1.2979E-11  1.3929E-09
  2.0934E-12  8.8397E-09 -4.6794E-12  2.4287E-10  1.2543E-09 -1.3443E-07
  1.7364E-11  5.8711E-08 -1.2979E-11  1.2543E-09  8.3869E-09 -8.7909E-07
 -1.4087E-09 -6.2020E-06  1.3929E-09 -1.3443E-07 -8.7909E-07  9.4553E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.418287   11.946476   -0.151581    0.007277   -0.988351  2454387.759564
# Heliocentric elements and errors
Epoch:              2454380.5000  =  2007/10/07
Mean Anomaly:          356.10028 +/-     3.959
Argument of Peri:      219.18113 +/-    11.644
Long of Asc Node:      195.70793 +/-     0.042
Inclination:             6.69625 +/-     0.081
Eccentricity:         0.76809159 +/-    0.1752
Semi-Major Axis:     95.27743912 +/-   63.7397
Time of Perihelion: 2458060.2173 +/-     565.3
Perihelion:          22.09563904 +/-   22.2984
Aphelion:           168.45923921 +/-  113.9275
Period (y)              930.0222 +/-    933.26
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.38858215 +/-    0.0515
Ecliptic Y            5.31092824 +/-    0.0109
Ecliptic Z            0.17496183 +/-    0.0004
Ecliptic XDOT        -0.00230567 +/-    0.0006
Ecliptic YDOT         0.00387644 +/-    0.0001
Ecliptic ZDOT        -0.00051141 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   24.96075940 +/-    0.0504
Geocenter to KBO     23.97361956 +/-    0.0526
# Hcoef: 10.36

The following table shows the complete astrometric record for 07TU431. 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 (07TU431) followed by the observatory code and reference code for the source of the astrometry.

2007 10  14.25881  00 43 17.21   +05 06 29.1   24.1R 07TU431   568  Cz3609      
2007 10  14.32228  00 43 16.77   +05 06 26.0   23.7R 07TU431   568  Cz3609      
2007 10  14.38418  00 43 16.34   +05 06 22.9   24.0R 07TU431   568  Cz3609      
2007 10  15.41055  00 43 09.55   +05 05 35.2         07TU431   568  Cz3609      
2007 11  03.03576  00 41 14.52   +04 51 50.6         07TU431   304  Cz3609      
2007 11  03.06250  00 41 14.37   +04 51 49.6         07TU431   304  Cz3609      
2007 11  10.308416 00 40 36.12   +04 47 07.6   24.1i 07TU431   568  C~5i1e      
2007 12  07.05555  00 39 05.56   +04 35 06.9         07TU431   I11  Cz4080      
2007 12  07.08472  00 39 05.50   +04 35 06.4         07TU431   I11  Cz4080      

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     0.17       0.00     0.03
     2   0.0002     -7.26    -0.03      -0.29    -0.01
     3   0.0003    -14.39    -0.26      -0.63    -0.13
     4   0.0032   -126.41     0.07      -4.90     0.19
     5   0.0541  -2031.00     0.08     -91.55     0.01
     6   0.0542  -2033.45     0.15     -91.59     0.07
     7   0.0741  -2670.02    -0.21    -127.24    -0.25
     8   0.1473  -4198.46     0.08    -259.75     0.04
     9   0.1474  -4199.48    -0.06    -259.86     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.

07TU431    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0