Orbit Fit and Astrometric record for 07TG422

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: 07TG422   
# Created Mon May  2 01:37:38 2016
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   34
# Arc:   5.35y
# First observation: 2007/09/05
#  Last observation: 2013/01/12
Preliminary a, adot, b, bdot, g, gdot:
   0.000221   0.041200   0.000048   0.005077   0.028952   0.000000
# Chi-squared of fit:    25.43 DOF:   62 RMS:  0.15
# Min/Max residuals:    -0.37    0.34
# Exact a, adot, b, bdot, g, gdot:
  2.277083E-05  4.121448E-02  2.494557E-06  5.119168E-03  2.843726E-02  2.568885E-03
# Covariance matrix:
  1.8309E-13 -9.7953E-14  3.0606E-14 -2.3404E-14  1.9125E-13 -7.4967E-13
 -9.7953E-14  3.4229E-13 -1.4784E-14  5.0970E-14 -1.5807E-15  1.9977E-12
  3.0606E-14 -1.4784E-14  6.0749E-14 -2.1876E-14  4.7081E-14 -1.5200E-13
 -2.3404E-14  5.0970E-14 -2.1876E-14  3.5138E-14 -1.8398E-14  3.4451E-13
  1.9125E-13 -1.5807E-15  4.7081E-14 -1.8398E-14  3.3450E-13 -4.2729E-13
 -7.4967E-13  1.9977E-12 -1.5200E-13  3.4451E-13 -4.2729E-13  1.3136E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -17.651494   45.565424    0.896990   -0.139207   -0.437703  2454348.949614
# Heliocentric elements and errors
Epoch:              2454340.5000  =  2007/08/28
Mean Anomaly:            0.06453 +/-     0.000
Argument of Peri:      285.65190 +/-     0.010
Long of Asc Node:      112.84572 +/-     0.001
Inclination:            18.60421 +/-     0.000
Eccentricity:         0.92639554 +/-    0.0001
Semi-Major Axis:    483.08110986 +/-    0.9463
Time of Perihelion: 2453645.3008 +/-       1.5
Perihelion:          35.55692577 +/-    0.0982
Aphelion:           930.60529395 +/-    1.8242
Period (y)            10617.8916 +/-     31.20
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.42042028 +/-    0.0005
Ecliptic Y           23.62322466 +/-    0.0005
Ecliptic Z          -10.66290224 +/-    0.0002
Ecliptic XDOT        -0.00255743 +/-    0.0000
Ecliptic YDOT         0.00305134 +/-    0.0000
Ecliptic ZDOT         0.00039456 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.61054836 +/-    0.0005
Geocenter to KBO     35.16513398 +/-    0.0007
# Hcoef:  6.11

The following table shows the complete astrometric record for 07TG422. 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 (07TG422) followed by the observatory code and reference code for the source of the astrometry.

2007 09  05.44886  03 12 36.57   -00 25 56.2   22.7  07TG422   705  cx9533      
2007 09  05.44969  03 12 36.58   -00 25 56.2   24.1  07TG422   705  cx9533      
2007 09  15.40451  03 12 21.19   -00 30 59.1   22.1  07TG422   705  cx9533      
2007 09  15.40783  03 12 21.19   -00 30 59.3   22.9  07TG422   705  cx9533      
2007 09  22.43738  03 12 04.57   -00 34 40.4   22.3  07TG422   705  cx9533      
2007 09  22.44070  03 12 04.55   -00 34 40.4   23.0  07TG422   705  cx9533      
2007 10  03.45132  03 11 29.90   -00 40 26.9   22.2  07TG422   705  cx9533      
2007 10  03.45464  03 11 29.88   -00 40 27.1   23.0  07TG422   705  cx9533      
2007 10  09.43619  03 11 07.13   -00 43 30.4   22.2  07TG422   705  cx9533      
2007 10  09.43951  03 11 07.10   -00 43 30.5   23.1  07TG422   705  cx9533      
2007 10  12.45384  03 10 54.71   -00 45 00.6   21.2  07TG422   705  cx9533      
2007 10  12.45467  03 10 54.71   -00 45 00.6   21.0  07TG422   705  cx9533      
2007 10  14.45424  03 10 46.16   -00 45 59.0   21.8  07TG422   705  cx9533      
2007 10  14.45507  03 10 46.18   -00 45 59.1   22.2  07TG422   705  cx9533      
2007 11  02.35921  03 09 16.29   -00 54 07.9   22.2  07TG422   705  cx9533      
2007 11  02.36253  03 09 16.28   -00 54 08.1   23.1  07TG422   705  cx9533      
2007 11  05.36387  03 09 00.95   -00 55 11.9   22.2  07TG422   705  cx9533      
2007 11  05.36719  03 09 00.95   -00 55 12.3   23.1  07TG422   705  cx9533      
2007 11  08.38461  03 08 45.40   -00 56 11.3   22.3  07TG422   705  cx9533      
2007 11  08.38545  03 08 45.41   -00 56 11.8   22.9  07TG422   705  cx9533      
2007 11  12.35743  03 08 24.84   -00 57 22.6   22.1  07TG422   705  cx9533      
2007 11  12.36075  03 08 24.83   -00 57 22.9   23.2  07TG422   705  cx9533      
2007 11  17.36285  03 07 58.98   -00 58 39.0   22.0  07TG422   705  cx9533      
2007 11  17.36368  03 07 58.98   -00 58 39.2   22.5  07TG422   705  cx9533      
2007 11  19.33936  03 07 48.83   -00 59 05.1   22.2  07TG422   705  cx9533      
2007 11  19.34268  03 07 48.81   -00 59 05.1   23.0  07TG422   705  cx9533      
2008 10  26.45436  03 18 37.65   +00 05 20.5         07TG422   695  C~01NP      
2008 10  26.47831  03 18 37.54   +00 05 20.0         07TG422   695  C~01NP      
2008 10  27.38650  03 18 33.13   +00 04 58.0         07TG422   695  C~01NP      
2008 10  27.43178  03 18 32.89   +00 04 56.8         07TG422   695  C~01NP      
2009 09  28.38818  03 29 17.37   +01 15 01.1         07TG422   695  C~0C8N      
2009 09  28.43894  03 29 17.18   +01 14 59.8         07TG422   695  C~0C8N      
2013 01  12.16088  03 47 37.76   +03 43 52.8   22.0R 07TG422   688  C~0ngB      
2013 01  12.22521  03 47 37.62   +03 43 54.6         07TG422   688  C~0ngB      

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     0.03       0.00     0.07
  2   0.0000      0.14     0.19      -0.04     0.05
  3   0.0273   -305.92    -0.15    -226.67     0.21
  4   0.0273   -305.98    -0.07    -226.87     0.09
  5   0.0465   -606.98    -0.01    -369.80    -0.06
  6   0.0465   -607.26    -0.14    -369.72     0.08
  7   0.0767  -1202.93     0.09    -557.80    -0.07
  8   0.0767  -1203.27    -0.05    -557.91    -0.13
  9   0.0931  -1582.06     0.20    -638.96    -0.03
 10   0.0931  -1582.52    -0.04    -638.93     0.03
 11   0.1013  -1786.11     0.00    -673.73    -0.08
 12   0.1013  -1786.11     0.06    -673.73    -0.07
 13   0.1068  -1925.55    -0.18    -694.12     0.15
 14   0.1068  -1925.29     0.14    -694.30    -0.02
 15   0.1585  -3356.52     0.04    -788.52    -0.01
 16   0.1586  -3356.72     0.11    -788.67    -0.16
 17   0.1668  -3595.38    -0.08    -785.97     0.02
 18   0.1668  -3595.50     0.07    -786.35    -0.37
 19   0.1750  -3836.00     0.03    -778.12     0.31
 20   0.1750  -3836.00     0.10    -778.64    -0.21
 21   0.1859  -4152.14    -0.12    -760.80     0.04
 22   0.1859  -4152.37    -0.08    -761.05    -0.23
 23   0.1996  -4546.10     0.03    -726.27     0.00
 24   0.1996  -4546.16     0.04    -726.46    -0.20
 25   0.2050  -4699.66    -0.04    -708.98    -0.13
 26   0.2050  -4699.95    -0.06    -708.90    -0.08
 27   1.1417   5726.02    -0.07     293.85     0.17
 28   1.1418   5724.30     0.06     293.83     0.22
 29   1.1443   5654.58     0.06     291.13     0.23
 30   1.1444   5650.79    -0.19     290.98     0.18
 31   2.0642  16137.13     0.23    1641.93    -0.04
 32   2.0643  16134.01    -0.27    1641.47     0.30
 33   5.3544  34750.72    -0.30    5722.88    -0.35
 34   5.3546  34749.16     0.34    5725.22     0.11

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.

07TG422    quality flag:2

Type:       SCATNEAR  CENTAURS  SCATNEAR

axisobj       600.913   605.397   596.511
ecceobj         0.941     0.941     0.940
incobj         18.592    18.592    18.591
qmin           31.148    30.178    31.281
qmax         1199.134  1663.564  1157.451
amean         507.639   572.870   489.234
amin          446.044   472.278   446.241
amax          617.394   849.633   596.510
emean           0.930     0.937     0.927
emin            0.916     0.921     0.915
emax            0.943     0.958     0.940
imean          17.156    17.163    17.175
imin           16.681    16.646    16.693
imax           17.845    18.043    17.957
excite_mean     0.975     0.982     0.973
fracstop        1.000     1.000     1.000
cjmean          2.949     2.948     2.949

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       292.0     292.0     292.5
kozaiamp          8.9       9.2       9.7