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 Thu Dec  8 02:37:42 2016
# Orbit generated from Bernstein formalism
# Fitting   66 observations of   67
# Arc:   7.36y
# First observation: 2007/09/05
#  Last observation: 2015/01/13
Preliminary a, adot, b, bdot, g, gdot:
   0.000929   0.041589   0.000225   0.005110   0.030303   0.000000
# Chi-squared of fit:    43.92 DOF:  126 RMS:  0.14
# Min/Max residuals:    -0.53    0.32
# Exact a, adot, b, bdot, g, gdot:
  2.255525E-05  4.121601E-02  2.543899E-06  5.119194E-03  2.843747E-02  2.579202E-03
# Covariance matrix:
  8.0379E-14 -1.7519E-14  7.3500E-15 -2.2882E-15  4.8794E-14 -5.2709E-14
 -1.7519E-14  6.5888E-14  9.2718E-17  7.8660E-15  3.0313E-14  2.2596E-13
  7.3500E-15  9.2718E-17  4.9270E-14 -7.5046E-15  1.2709E-14 -3.5529E-15
 -2.2882E-15  7.8660E-15 -7.5046E-15  3.0588E-15  1.9714E-15  2.8386E-14
  4.8794E-14  3.0313E-14  1.2709E-14  1.9714E-15  1.0667E-13  7.9028E-14
 -5.2709E-14  2.2596E-13 -3.5529E-15  2.8386E-14  7.9028E-14  8.0856E-13
#      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:            0.06474 +/-     0.000
Argument of Peri:      285.62219 +/-     0.003
Long of Asc Node:      112.84667 +/-     0.000
Inclination:            18.60409 +/-     0.000
Eccentricity:         0.92655500 +/-    0.0001
Semi-Major Axis:    484.11704728 +/-    0.4159
Time of Perihelion: 2453640.8824 +/-       0.4
Perihelion:          35.55597697 +/-    0.0430
Aphelion:           932.67811759 +/-    0.8019
Period (y)            10652.0640 +/-     13.73
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.42025126 +/-    0.0003
Ecliptic Y           23.62304143 +/-    0.0003
Ecliptic Z          -10.66282113 +/-    0.0001
Ecliptic XDOT        -0.00255685 +/-    0.0000
Ecliptic YDOT         0.00305210 +/-    0.0000
Ecliptic ZDOT         0.00039426 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.61028661 +/-    0.0003
Geocenter to KBO     35.16487196 +/-    0.0004
# Hcoef:  6.23

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      
2010 11  10.45480  03 34 59.386  +01 53 24.54  21.8w 07TG422   F51  C~1vVm      
2010 11  10.46824  03 34 59.318  +01 53 24.36  21.8w 07TG422   F51  C~1vVm      
2010 11  10.48431  03 34 59.232  +01 53 24.09  21.9w 07TG422   F51  C~1vVm      
2010 11  10.49988  03 34 59.147  +01 53 23.78  21.7w 07TG422   F51  C~1vVm      
2012 10  20.53417  03 53 56.052  +03 50 57.69  22.1w 07TG422   F51  C~1vVm      
2012 10  20.54856  03 53 55.995  +03 50 57.16  21.9w 07TG422   F51  C~1vVm      
2012 10  20.57738  03 53 55.878  +03 50 56.37  22.0w 07TG422   F51  C~1vVm      
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      
2014 10  02.53912  04 11 52.118  +05 43 53.22  22.2w 07TG422   F51  C~1vVm      
2014 10  02.55387  04 11 52.079  +05 43 52.81  22.1w 07TG422   F51  C~1vVm      
2014 10  02.56860  04 11 52.048  +05 43 52.65  21.9w 07TG422   F51  C~1vVm      
2014 10  02.58345  04 11 52.000  +05 43 52.28  21.8w 07TG422   F51  C~1vVm      
2014 10  26.55376  04 10 31.365  +05 35 08.14  22.4w 07TG422   F51  C~1vVm      
2014 10  26.56620  04 10 31.305  +05 35 07.88  22.2w 07TG422   F51  C~1vVm      
2014 10  26.57860  04 10 31.257  +05 35 07.56  22.4w 07TG422   F51  C~1vVm      
2014 11  21.46463  04 08 26.178  +05 28 06.39  22.1w 07TG422   F51  C~1vVm      
2014 11  21.47682  04 08 26.102  +05 28 06.56  21.9w 07TG422   F51  C~1vVm      
2014 11  21.48899  04 08 26.041  +05 28 06.27  21.9w 07TG422   F51  C~1vVm      
2014 11  21.50109  04 08 25.984  +05 28 06.35  22.1w 07TG422   F51  C~1vVm      
2014 11  23.45578  04 08 15.794  +05 27 44.67  22.2w 07TG422   F51  C~1vVm      
2014 11  23.46794  04 08 15.731  +05 27 44.14  22.1w 07TG422   F51  C~1vVm      
2014 11  23.48012  04 08 15.653  +05 27 44.20  21.9w 07TG422   F51  C~1vVm      
2014 11  23.49229  04 08 15.597  +05 27 43.90  21.8w 07TG422   F51  C~1vVm      
2015 01  09.25499  04 04 40.927  +05 28 50.11  22.2w 07TG422   F51  C~1vVm      
2015 01  09.26803  04 04 40.882  +05 28 50.40  22.2w 07TG422   F51  C~1vVm      
2015 01  09.26869  04 04 40.875  +05 28 50.29  22.2w 07TG422   F51  C~1vVm      
2015 01  09.28116  04 04 40.838  +05 28 50.58  22.0w 07TG422   F51  C~1vVm      
2015 01  09.28181  04 04 40.842  +05 28 50.83  22.4w 07TG422   F51  C~1vVm      
2015 01  09.29428  04 04 40.799  +05 28 50.74  22.1w 07TG422   F51  C~1vVm      
2015 01  09.29493  04 04 40.773  +05 28 50.95  22.4w 07TG422   F51  C~1vVm      
2015 01  13.29777  04 04 28.464  +05 29 51.99  22.3w 07TG422   F51  C~1vVm      
2015 01  13.30998  04 04 28.420  +05 29 52.14  22.2w 07TG422   F51  C~1vVm      
2015 01  13.32220  04 04 28.386  +05 29 52.35  22.0w 07TG422   F51  C~1vVm      
2015 01  13.33457  04 04 28.356  +05 29 52.61  21.9w 07TG422   F51  C~1vVm      

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     0.07       0.00     0.06
  2   0.0000      0.14     0.24      -0.04     0.04
  3   0.0273   -305.92    -0.11    -226.67     0.20
  4   0.0273   -305.98    -0.03    -226.87     0.08
  5   0.0465   -606.98     0.03    -369.80    -0.07
  6   0.0465   -607.26    -0.10    -369.72     0.07
  7   0.0767  -1202.93     0.12    -557.80    -0.07
  8   0.0767  -1203.27    -0.02    -557.91    -0.13
  9   0.0931  -1582.06     0.23    -638.96    -0.04
 10   0.0931  -1582.52    -0.01    -638.93     0.03
 11   0.1013  -1786.11     0.03    -673.73    -0.09
 12   0.1013  -1786.11     0.09    -673.73    -0.08
 13   0.1068  -1925.55    -0.15    -694.12     0.14
 14   0.1068  -1925.29     0.17    -694.30    -0.03
 15   0.1585  -3356.52     0.07    -788.52    -0.02
 16   0.1586  -3356.72     0.13    -788.67    -0.17
 17   0.1668  -3595.38    -0.06    -785.97     0.01
 18   0.1668  -3595.50     0.10    -786.35    -0.38
 19   0.1750  -3836.00     0.05    -778.12     0.31
 20   0.1750  -3836.00     0.12    -778.64    -0.22
 21   0.1859  -4152.14    -0.10    -760.80     0.03
 22   0.1859  -4152.37    -0.06    -761.05    -0.24
 23   0.1996  -4546.10     0.05    -726.27    -0.01
 24   0.1996  -4546.16     0.06    -726.46    -0.21
 25   0.2050  -4699.66    -0.02    -708.98    -0.13
 26   0.2050  -4699.95    -0.05    -708.90    -0.08
 27   1.1417   5726.02    -0.29     293.85     0.16
 28   1.1418   5724.30    -0.16     293.83     0.21
 29   1.1443   5654.58    -0.16     291.13     0.22
 30   1.1444   5650.79    -0.41     290.98     0.18
 31   2.0642  16137.13    -0.02    1641.93    -0.02
 32   2.0643  16134.01    -0.53    1641.47     0.32
 33   3.1814  21751.27     0.08    2436.83     0.02
 34   3.1814  21750.23     0.14    2436.94     0.06
 35   3.1815  21748.90     0.12    2437.04     0.08
 36   3.1815  21747.58     0.06    2437.09     0.06
 37   5.1255  40497.16     0.16    4574.55     0.19
 38   5.1255  40496.16     0.16    4574.26    -0.02
 39   5.1256  40494.18     0.21    4573.97    -0.15
 40   5.3544  34750.72     0.05    5722.88    -0.07
 41   5.3546  34749.16 (   0.69)   5725.22 (   0.39)
 42   7.0749  58840.84    -0.00    6873.80    -0.17
 43   7.0749  58840.11    -0.07    6873.54    -0.23
 44   7.0749  58839.58     0.06    6873.51    -0.08
 45   7.0750  58838.73    -0.13    6873.33    -0.06
 46   7.1406  57433.98    -0.05    6676.38    -0.08
 47   7.1406  57432.98    -0.14    6676.37    -0.06
 48   7.1407  57432.14    -0.07    6676.24    -0.16
 49   7.2115  55376.54     0.14    6765.47    -0.14
 50   7.2116  55375.42     0.06    6765.95     0.21
 51   7.2116  55374.40     0.06    6765.91     0.05
 52   7.2116  55373.54     0.24    6766.22     0.24
 53   7.2170  55210.20     0.08    6786.18     0.22
 54   7.2170  55209.08    -0.01    6785.91    -0.19
 55   7.2171  55207.89    -0.16    6786.29     0.06
 56   7.2171  55206.94    -0.08    6786.22    -0.15
 57   7.3451  51932.34    -0.05    7728.18    -0.09
 58   7.3452  51931.74    -0.04    7728.65     0.02
 59   7.3452  51931.60    -0.15    7728.57    -0.08
 60   7.3452  51931.12    -0.04    7729.01     0.01
 61   7.3452  51931.25     0.12    7729.24     0.22
 62   7.3452  51930.57     0.02    7729.33    -0.04
 63   7.3452  51930.23    -0.28    7729.64     0.26
 64   7.3562  51759.88     0.09    7840.58     0.00
 65   7.3562  51759.25    -0.03    7840.91    -0.02
 66   7.3563  51758.79     0.01    7841.26    -0.02
 67   7.3563  51758.41     0.13    7841.64     0.01

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:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       602.520   604.451   600.618
ecceobj         0.941     0.941     0.941
incobj         18.591    18.591    18.591
qmin           31.087    31.013    30.810
qmax         1233.041  1251.876  1249.151
amean         515.963   499.333   530.315
amin          462.403   436.841   472.751
amax          634.368   643.807   642.396
emean           0.931     0.928     0.933
emin            0.919     0.913     0.919
emax            0.944     0.944     0.945
imean          17.193    17.225    17.168
imin           16.683    16.705    16.678
imax           18.009    18.064    17.893
excite_mean     0.977     0.974     0.978
fracstop        1.000     1.000     1.000
cjmean          2.948     2.949     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       292.5     293.5     292.1
kozaiamp          9.5      10.2       9.0