Orbit Fit and Astrometric record for 07TV431

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: 07TV431   
# Created Tue Feb 19 02:09:18 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   30 observations of   30
# Arc:  10.17y
# First observation: 2007/10/14
#  Last observation: 2017/12/13
# Chi-squared of fit:    22.13 DOF:   54 RMS:  0.15
# Min/Max residuals:    -0.44    0.64
# Exact a, adot, b, bdot, g, gdot:
  2.033327E-05  4.270595E-02  1.119666E-06  1.312729E-03  3.389659E-02 -1.930930E-03
# Covariance matrix:
  2.6786E-13 -6.0906E-14  2.5656E-16 -1.0236E-15  4.8983E-14 -8.1541E-14
 -6.0906E-14  1.5957E-13 -1.4901E-15  4.9322E-15  1.1303E-14  3.8877E-13
  2.5656E-16 -1.4901E-15  2.4461E-13 -2.7966E-14 -2.9543E-16 -3.7255E-15
 -1.0236E-15  4.9322E-15 -2.7966E-14  4.1025E-15  4.2740E-16  1.2322E-14
  4.8983E-14  1.1303E-14 -2.9543E-16  4.2740E-16  1.6305E-13  3.0968E-14
 -8.1541E-14  3.8877E-13 -3.7255E-15  1.2322E-14  3.0968E-14  9.7124E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.420147   31.725431    0.188502   -0.007121   -0.981956  2454387.953084
# Heliocentric elements and errors
Epoch:              2454388.5000  =  2007/10/15
Mean Anomaly:          350.60849 +/-     0.005
Argument of Peri:        2.38562 +/-     0.008
Long of Asc Node:       44.36641 +/-     0.000
Inclination:             1.80669 +/-     0.000
Eccentricity:         0.23121106 +/-    0.0000
Semi-Major Axis:     39.38089071 +/-    0.0028
Time of Perihelion: 2456743.3306 +/-       9.4
Perihelion:          30.27559325 +/-    0.0028
Aphelion:            48.48618818 +/-    0.0038
Period (y)              247.1363 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.02604799 +/-    0.0003
Ecliptic Y           15.86459376 +/-    0.0002
Ecliptic Z           -0.21629851 +/-    0.0000
Ecliptic XDOT        -0.00193956 +/-    0.0000
Ecliptic YDOT         0.00285110 +/-    0.0000
Ecliptic ZDOT         0.00010707 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.48096262 +/-    0.0003
Geocenter to KBO     29.50155952 +/-    0.0004
# Hcoef:  9.36

The following table shows the complete astrometric record for 07TV431. 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 (07TV431) followed by the observatory code and reference code for the source of the astrometry.

2007 10  14.45233  01 58 50.60   +11 40 46.3   23.8R 07TV431   568  Cz3609      
2007 10  14.51370  01 58 50.22   +11 40 44.3   23.9R 07TV431   568  Cz3609      
2007 10  14.57541  01 58 49.84   +11 40 42.3         07TV431   568  Cz3609      
2007 11  04.08403  01 56 43.56   +11 29 34.3         07TV431   304  Cz3609      
2007 11  04.09514  01 56 43.48   +11 29 34.0         07TV431   304  Cz3609      
2007 12  06.14097  01 53 54.21   +11 14 46.0         07TV431   I11  Cz4080      
2007 12  07.05000  01 53 50.54   +11 14 27.3         07TV431   I11  Cz4080      
2007 12  07.08055  01 53 50.41   +11 14 26.7         07TV431   I11  Cz4080      
2015 09  07.62902  03 18 14.808  +18 27 21.89  24.4w 07TV431   568  C~2lSI      
2015 09  12.49264  03 18 05.759  +18 26 52.97  24.5w 07TV431   568  C~2lSI      
2015 10  07.53854  03 16 35.350  +18 21 35.30  24.3w 07TV431   568  C~2lSI      
2015 10  07.59790  03 16 35.050  +18 21 34.22  24.2w 07TV431   568  C~2lSI      
2015 10  09.57780  03 16 25.173  +18 20 58.40  24.3w 07TV431   568  C~2lSI      
2015 11  07.33264  03 13 32.611  +18 10 17.35  23.8r 07TV431   568  C~2lSI      
2015 11  07.37479  03 13 32.332  +18 10 16.35  23.9r 07TV431   568  C~2lSI      
2015 11  07.41697  03 13 32.048  +18 10 15.35  24.0r 07TV431   568  C~2lSI      
2015 11  10.49950  03 13 11.644  +18 08 58.21  24.1w 07TV431   568  C~2lSI      
2016 09  07.59677  03 28 03.776  +19 08 17.28  24.4w 07TV431   568  C~2lSI      
2016 09  27.52706  03 27 12.150  +19 05 37.12  24.4w 07TV431   568  C~2lSI      
2016 10  05.51115  03 26 38.681  +19 03 45.97  24.2w 07TV431   568  C~2lSI      
2016 10  07.51560  03 26 29.295  +19 03 14.35  24.5w 07TV431   568  C~2lSI      
2016 10  07.61130  03 26 28.816  +19 03 13.04  24.5w 07TV431   568  C~2lSI      
2016 10  09.51605  03 26 19.519  +19 02 41.48  24.3w 07TV431   568  C~2lSI      
2016 10  09.58836  03 26 19.155  +19 02 40.17  24.1w 07TV431   568  C~2lSI      
2016 11  02.50259  03 23 59.536  +18 54 36.31  24.1w 07TV431   568  C~2lSI      
2016 11  04.47870  03 23 46.662  +18 53 50.82  24.0w 07TV431   568  C~2lSI      
2016 12  28.43500  03 18 22.553  +18 34 13.05  24.4w 07TV431   568  C~2lSI      
2017 01  27.27995  03 17 09.805  +18 29 42.85  24.2w 07TV431   568  C~2lSI      
2017 12  13.36234  03 29 38.625  +19 20 11.67  24.2w 07TV431   568  C~2lSJ      
2017 12  13.40466  03 29 38.382  +19 20 10.60        07TV431   568  C~2lSJ      

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    -0.04       0.00    -0.13
  2   0.0002      0.00    -0.06       0.00    -0.15
  3   0.0003      0.00    -0.05       0.00    -0.15
  4   0.0565      0.00    -0.00       0.00     0.58
  5   0.0565      0.00    -0.17       0.00     0.64
  6   0.1443      0.00     0.02       0.00    -0.44
  7   0.1467      0.00     0.19       0.00    -0.16
  8   0.1468      0.00     0.13       0.00    -0.13
  9   7.8992      0.00    -0.03       0.00    -0.07
 10   7.9125      0.00     0.15       0.00    -0.05
 11   7.9811      0.00    -0.02       0.00    -0.04
 12   7.9812      0.00    -0.05       0.00    -0.06
 13   7.9867      0.00     0.06       0.00    -0.01
 14   8.0654      0.00    -0.01       0.00    -0.05
 15   8.0655      0.00     0.04       0.00    -0.02
 16   8.0656      0.00     0.03       0.00     0.03
 17   8.0741      0.00     0.07       0.00     0.02
 18   8.9011      0.00     0.03       0.00     0.01
 19   8.9557      0.00    -0.03       0.00     0.01
 20   8.9776      0.00    -0.14       0.00    -0.10
 21   8.9831      0.00     0.19       0.00    -0.08
 22   8.9833      0.00     0.05       0.00     0.17
 23   8.9885      0.00    -0.04       0.00     0.05
 24   8.9887      0.00     0.03       0.00    -0.03
 25   9.0542      0.00    -0.02       0.00     0.03
 26   9.0596      0.00    -0.03       0.00     0.02
 27   9.2073      0.00    -0.09       0.00     0.01
 28   9.2891      0.00    -0.04       0.00     0.02
 29  10.1654      0.00    -0.06       0.00     0.16
 30  10.1655      0.00     0.08       0.00    -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.

07TV431    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.896    39.896    39.897
ecceobj         0.241     0.241     0.241
incobj          1.803     1.803     1.803
qmin           29.819    29.819    29.819
qmax           49.719    49.709    49.727
amean          39.455    39.455    39.455
amin           39.048    39.049    39.047
amax           39.947    39.943    39.950
emean           0.227     0.227     0.227
emin            0.210     0.210     0.211
emax            0.245     0.244     0.245
imean           1.357     1.357     1.358
imin            0.629     0.630     0.629
imax            2.366     2.366     2.367
excite_mean     0.229     0.229     0.229
fracstop        1.000     1.000     1.000
cjmean          2.992     2.992     2.992

libcent 0       180.6     180.7     180.5
libamp  0        56.0      56.0      56.0
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       196.6     196.5     196.6
kozaiamp        180.0     180.0     179.9