Orbit Fit and Astrometric record for 07TZ417

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: 07TZ417   
# Created Thu Nov 15 02:08:56 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   24 observations of   24
# Arc:   8.07y
# First observation: 2006/09/25
#  Last observation: 2014/10/22
# Chi-squared of fit:    29.94 DOF:   42 RMS:  0.20
# Min/Max residuals:    -0.53    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.620535E-05  2.512477E-02  4.573969E-06  6.989134E-03  2.575210E-02 -3.036649E-03
# Covariance matrix:
  4.4581E-13 -2.0576E-13  5.5432E-14 -5.5445E-14  2.8285E-13 -9.1231E-13
 -2.0576E-13  3.7897E-13 -9.7552E-14  1.0832E-13  3.6303E-13  1.7728E-12
  5.5432E-14 -9.7552E-14  1.3892E-13 -4.9522E-14 -8.2397E-14 -4.6728E-13
 -5.5445E-14  1.0832E-13 -4.9522E-14  3.9890E-14  1.0326E-13  5.1814E-13
  2.8285E-13  3.6303E-13 -8.2397E-14  1.0326E-13  1.2493E-12  1.6805E-12
 -9.1231E-13  1.7728E-12 -4.6728E-13  5.1814E-13  1.6805E-12  8.4803E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -16.648830   27.756352    0.433377   -0.259954   -0.869787  2454003.834424
# Heliocentric elements and errors
Epoch:              2454004.5000  =  2006/09/26
Mean Anomaly:          295.29563 +/-     0.037
Argument of Peri:       31.48382 +/-     0.048
Long of Asc Node:       72.46009 +/-     0.000
Inclination:            22.30822 +/-     0.000
Eccentricity:         0.13035135 +/-    0.0001
Semi-Major Axis:     41.38547860 +/-    0.0071
Time of Perihelion: 2471482.8939 +/-      22.7
Perihelion:          35.99082573 +/-    0.0080
Aphelion:            46.78013147 +/-    0.0095
Period (y)              266.2442 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.92515891 +/-    0.0014
Ecliptic Y           17.36248720 +/-    0.0007
Ecliptic Z          -11.12536262 +/-    0.0005
Ecliptic XDOT        -0.00132455 +/-    0.0000
Ecliptic YDOT         0.00231422 +/-    0.0000
Ecliptic ZDOT         0.00080435 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.70078322 +/-    0.0013
Geocenter to KBO     38.83189243 +/-    0.0017
# Hcoef:  7.34

The following table shows the complete astrometric record for 07TZ417. 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 (07TZ417) followed by the observatory code and reference code for the source of the astrometry.

2006 09  25.33367  02 06 44.48   -04 53 52.2   22.6I 07TZ417   807  Cx2653      
2006 10  17.28065  02 05 03.77   -05 04 14.6   23.0R 07TZ417   807  Cx2653      
2007 10  04.30992  02 10 57.22   -04 05 00.2   22.5I 07TZ417   807  Cx2653      
2007 10  08.26344  02 10 39.10   -04 06 53.0   23.2R 07TZ417   807  Cx2653      
2007 10  08.29975  02 10 38.92   -04 06 54.0   22.8I 07TZ417   807  Cx2653      
2007 10  10.33195  02 10 29.38   -04 07 50.4   22.9R 07TZ417   807  Cx2653      
2007 10  12.28312  02 10 20.07   -04 08 44.0   22.9R 07TZ417   807  Cx2653      
2007 10  14.26041  02 10 10.57   -04 09 36.0   22.8R 07TZ417   807  Cx2653      
2007 11  05.25304  02 08 21.09   -04 17 34.9   23.1R 07TZ417   807  Cx2653      
2007 11  05.27699  02 08 20.99   -04 17 35.3   22.5I 07TZ417   807  Cx2653      
2007 11  11.08585  02 07 52.48   -04 19 01.3   23.1R 07TZ417   807  Cx2653      
2007 11  13.07951  02 07 42.86   -04 19 26.2   23.1R 07TZ417   807  Cx2653      
2007 11  15.07854  02 07 33.34   -04 19 48.8   23.2R 07TZ417   807  Cx2653      
2007 11  15.11389  02 07 33.17   -04 19 49.4   22.9I 07TZ417   807  Cx2653      
2007 11  17.07493  02 07 23.98   -04 20 09.0   23.1R 07TZ417   807  Cx2653      
2007 11  17.17134  02 07 23.51   -04 20 09.9   22.8I 07TZ417   807  Cx2653      
2008 10  31.341567 02 13 34.12   -03 22 41.4         07TZ417   645  C~1RHp      
2008 10  31.342396 02 13 34.12   -03 22 41.4         07TZ417   645  C~1RHp      
2008 10  31.344884 02 13 34.10   -03 22 41.5         07TZ417   645  C~1RHp      
2013 11  05.11365  02 38 00.59   +01 10 34.8   23.4r 07TZ417   W84  C~2J94      
2013 11  05.20710  02 38 00.10   +01 10 33.0         07TZ417   W84  C~2J94      
2013 11  05.26284  02 37 59.81   +01 10 32.0         07TZ417   W84  C~2J94      
2014 10  22.34164  02 44 15.91   +02 11 20.2   23.0R 07TZ417   G37  C~1BxQ      
2014 10  22.43490  02 44 15.43   +02 11 17.9         07TZ417   G37  C~1BxQ      

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    -0.11
  2   0.0601      0.00     0.11       0.00     0.14
  3   1.0239      0.00     0.16       0.00     0.20
  4   1.0347      0.00     0.09       0.00     0.15
  5   1.0348      0.00    -0.03       0.00     0.17
  6   1.0404      0.00     0.06       0.00     0.18
  7   1.0457      0.00    -0.30       0.00    -0.36
  8   1.0511      0.00     0.09       0.00     0.21
  9   1.1113      0.00    -0.21       0.00    -0.03
 10   1.1114      0.00     0.10       0.00    -0.04
 11   1.1273      0.00     0.14       0.00     0.11
 12   1.1328      0.00    -0.05       0.00     0.20
 13   1.1382      0.00    -0.12       0.00     0.22
 14   1.1383      0.00    -0.12       0.00    -0.00
 15   1.1437      0.00     0.00       0.00     0.12
 16   1.1440      0.00    -0.20       0.00     0.13
 17   2.1000      0.00     0.17       0.00    -0.49
 18   2.1000      0.00     0.23       0.00    -0.48
 19   2.1000      0.00     0.12       0.00    -0.53
 20   7.1123      0.00     0.12       0.00     0.06
 21   7.1126      0.00     0.13       0.00    -0.03
 22   7.1127      0.00     0.17       0.00    -0.01
 23   8.0739      0.00    -0.18       0.00     0.19
 24   8.0742      0.00    -0.28       0.00     0.02

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.

07TZ417    quality flag:2

Type:       SCATEXTD  SCATEXTD  SCATNEAR

axisobj        41.884    41.884    41.884
ecceobj         0.134     0.134     0.134
incobj         22.244    22.244    22.244
qmin           34.897    34.877    34.945
qmax           48.515    48.828    48.755
amean          41.571    41.597    41.573
amin           41.224    41.232    41.215
amax           41.961    42.042    42.047
emean           0.138     0.139     0.137
emin            0.120     0.119     0.118
emax            0.157     0.162     0.160
imean          20.596    20.574    20.610
imin           19.817    19.826    19.834
imax           21.335    21.312    21.356
excite_mean     0.378     0.378     0.378
fracstop        1.000     1.000     1.000
cjmean          2.903     2.904     2.904

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       176.3     174.7     178.5
kozaiamp        179.9     179.9     179.9