Orbit Fit and Astrometric record for 01QD298

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: 01QD298   
# Created Fri Oct 20 01:37:16 2017
# Orbit generated from Bernstein formalism
# Fitting   39 observations of   40
# Arc:  12.04y
# First observation: 2000/08/28
#  Last observation: 2012/09/11
Preliminary a, adot, b, bdot, g, gdot:
   0.000071   0.025176   0.000060  -0.000856   0.023331   0.000000
# Chi-squared of fit:    84.31 DOF:   72 RMS:  0.26
# Min/Max residuals:    -0.62    0.66
# Exact a, adot, b, bdot, g, gdot:
  1.690795E-05  2.495190E-02  4.815098E-07 -8.409737E-04  2.497205E-02  8.767292E-04
# Covariance matrix:
  1.9860E-13 -9.6663E-14 -3.8816E-15  2.7857E-15 -2.1001E-14 -2.8546E-13
 -9.6663E-14  9.6841E-14  5.7526E-15 -3.0814E-15 -6.2378E-14  3.1950E-13
 -3.8816E-15  5.7526E-15  7.4969E-14 -1.1313E-14 -6.1984E-15  1.9871E-14
  2.7857E-15 -3.0814E-15 -1.1313E-14  3.4655E-15  2.1143E-15 -1.0537E-14
 -2.1001E-14 -6.2378E-14 -6.1984E-15  2.1143E-15  1.7489E-13 -2.2499E-13
 -2.8546E-13  3.1950E-13  1.9871E-14 -1.0537E-14 -2.2499E-13  1.0931E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.763899  -41.996049   -0.288945   -0.080277   -0.961227  2451784.548163
# Heliocentric elements and errors
Epoch:              2451780.5000  =  2000/08/24
Mean Anomaly:           42.98939 +/-     0.030
Argument of Peri:      200.17024 +/-     0.033
Long of Asc Node:       70.81245 +/-     0.001
Inclination:             5.02918 +/-     0.000
Eccentricity:         0.05488545 +/-    0.0001
Semi-Major Axis:     42.65709532 +/-    0.0038
Time of Perihelion: 2439628.6019 +/-       8.5
Perihelion:          40.31584150 +/-    0.0048
Aphelion:            44.99834913 +/-    0.0051
Period (y)              278.6090 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.57434973 +/-    0.0005
Ecliptic Y          -27.12636914 +/-    0.0004
Ecliptic Z           -3.32570340 +/-    0.0001
Ecliptic XDOT         0.00188856 +/-    0.0000
Ecliptic YDOT         0.00197944 +/-    0.0000
Ecliptic ZDOT        -0.00009971 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.00842678 +/-    0.0005
Geocenter to KBO     40.04477169 +/-    0.0007
# Hcoef:  5.64

The following table shows the complete astrometric record for 01QD298. 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 (01QD298) followed by the observatory code and reference code for the source of the astrometry.

2000 08  28.04742  21 27 59.15   -19 57 48.7   21.8R 01QD298   807  Cd7926      
2000 08  28.10893  21 27 58.85   -19 57 49.7         01QD298   807  Cd7926      
2000 09  20.14277  21 26 21.13   -20 04 09.8   22.0R 01QD298   695  Cd7926      
2000 09  20.22846  21 26 20.83   -20 04 11.8         01QD298   695  Cd7926      
2001 08  19.13962  21 34 32.13   -19 29 55.7   20.6R 01QD298   807  Cd7926      
2001 08  19.21995  21 34 31.72   -19 29 57.6         01QD298   807  Cd7926      
2001 08  20.11019  21 34 27.38   -19 30 17.6   20.7R 01QD298   807  Cd7926      
2001 08  20.18834  21 34 27.00   -19 30 19.7         01QD298   807  Cd7926      
2001 09  12.24095  21 32 41.05   -19 37 57.6   21.8R 01QD298   695  Cd7926      
2001 09  12.28804  21 32 40.86   -19 37 58.1         01QD298   695  Cd7926      
2002 06  05.60426  21 44 46.76   -18 37 21.8         01QD298   568  Cf8914      
2002 06  05.60784  21 44 46.77   -18 37 21.9         01QD298   568  Cf8914      
2002 06  05.61452  21 44 46.75   -18 37 22.2         01QD298   568  Cf8914      
2002 06  06.57949  21 44 45.67   -18 37 34.5         01QD298   568  Cf8914      
2002 06  06.58313  21 44 45.67   -18 37 34.4         01QD298   568  Cf8914      
2002 06  06.59769  21 44 45.65   -18 37 34.6         01QD298   568  Cf8914      
2002 06  06.60282  21 44 45.65   -18 37 34.9         01QD298   568  Cf8914      
2002 06  07.58358  21 44 44.49   -18 37 48.4         01QD298   568  Cf8914      
2002 06  07.58716  21 44 44.48   -18 37 48.2         01QD298   568  Cf8914      
2002 06  07.59385  21 44 44.47   -18 37 48.3         01QD298   568  Cf8914      
2002 06  07.60172  21 44 44.46   -18 37 48.2         01QD298   568  Cf8914      
2002 07  11.18253  21 43 16.54   -18 48 32.8   21.7R 01QD298   304  Cf9826      
2002 07  11.35479  21 43 15.88   -18 48 36.9         01QD298   304  Cf9826      
2002 07  12.17316  21 43 12.75   -18 48 56.5         01QD298   304  Cf9826      
2002 07  12.19218  21 43 12.67   -18 48 56.6         01QD298   304  Cf9826      
2002 08  11.21584  21 40 58.03   -19 01 23.6   21.1R 01QD298   807  Cg3218      
2002 08  12.12272  21 40 53.62   -19 01 45.9         01QD298   807  Cg3218      
2002 08  12.21905  21 40 53.15   -19 01 48.3         01QD298   807  Cg3218      
2003 08  25.18565  21 45 34.67   -18 41 01.8   20.9R 01QD298   807  Ci3319      
2003 08  26.05208  21 45 30.53   -18 41 21.6         01QD298   807  Ci3319      
2003 08  26.14471  21 45 30.07   -18 41 23.8         01QD298   807  Ci3319      
2007 06  01.43295  22 12 23.93   -16 21 54.0   22.6R 01QD298   250  S~06AQ      
2007 06  01.43989  22 12 23.93   -16 21 54.0         01QD298   250  S~06AQ      
2007 06  01.44753  22 12 23.93   -16 21 54.1         01QD298   250  S~06AQ      
2007 06  01.45448  22 12 23.93   -16 21 54.2         01QD298   250  S~06AQ      
2008 07  31.39589  22 15 27.43   -16 12 44.3         01QD298   688  Cz3488      
2008 07  31.44119  22 15 27.23   -16 12 44.8         01QD298   688  Cz3488      
2012 09  11.53633  22 33 59.92   -14 32 30.4   21.5R 01QD298   E10  C~0iZ7      
2012 09  11.54234  22 33 59.89   -14 32 30.2   21.5R 01QD298   E10  C~0iZ7      
2012 09  11.54835  22 33 59.86   -14 32 30.4   21.1R 01QD298   E10  C~0iZ7      

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    -0.23       0.00    -0.21
  2   0.0002     -4.33    -0.22       0.38     0.05
  3   0.0632  -1431.35 (  -0.08)     71.01 (   0.85)
  4   0.0635  -1435.99    -0.13      70.43    -0.12
  5   0.9749   5793.86    -0.17    -185.18     0.16
  6   0.9751   5787.76    -0.33    -185.10     0.15
  7   0.9776   5723.17    -0.24    -184.17     0.48
  8   0.9778   5717.41    -0.24    -184.42     0.15
  9   1.0409   4151.38     0.09    -135.17    -0.14
 10   1.0410   4148.67     0.31    -134.79     0.06
 11   1.7702  15085.65     0.20     -89.55    -0.03
 12   1.7702  15085.75     0.38     -89.70    -0.15
 13   1.7702  15085.38     0.14     -89.88    -0.29
 14   1.7728  15066.68     0.02     -96.30    -0.04
 15   1.7729  15066.71     0.13     -96.21     0.08
 16   1.7729  15066.37     0.10     -96.30     0.08
 17   1.7729  15066.27     0.11     -96.58    -0.17
 18   1.7756  15046.09     0.16    -103.74    -0.62
 19   1.7756  15046.02     0.18    -103.51    -0.36
 20   1.7756  15045.85     0.16    -103.55    -0.36
 21   1.7756  15045.75     0.24    -103.41    -0.16
 22   1.8676  13645.92    -0.26    -290.64     0.14
 23   1.8681  13635.68    -0.12    -291.36     0.06
 24   1.8703  13587.02    -0.21    -294.92    -0.18
 25   1.8703  13585.92    -0.16    -294.63     0.19
 26   1.9525  11528.03    -0.03    -360.86    -0.01
 27   1.9550  11461.44    -0.02    -361.10     0.04
 28   1.9553  11454.33     0.07    -361.15    -0.01
 29   2.9901  15655.29     0.19    -527.99    -0.02
 30   2.9925  15592.88     0.45    -526.69     0.07
 31   2.9927  15585.95     0.32    -526.55     0.05
 32   6.7581  40618.29    -0.28    -916.08     0.61
 33   6.7581  40618.29    -0.27    -916.08     0.66
 34   6.7581  40618.25    -0.29    -916.18     0.62
 35   6.7581  40618.21    -0.31    -916.27     0.58
 36   7.9243  43385.02    -0.15   -1403.66    -0.55
 37   7.9244  43382.04     0.08   -1403.02     0.14
 38  12.0397  61671.96     0.05   -2092.06    -0.52
 39  12.0397  61671.61     0.17   -2091.69    -0.18
 40  12.0397  61671.09     0.11   -2091.70    -0.21

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.

01QD298    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.752    42.763    42.741
ecceobj         0.056     0.057     0.056
incobj          5.029     5.029     5.029
qmin           39.605    39.749    39.762
qmax           46.033    45.889    45.857
amean          42.693    42.705    42.699
amin           42.353    42.376    42.365
amax           43.047    43.047    43.046
emean           0.049     0.044     0.045
emin            0.026     0.021     0.021
emax            0.070     0.066     0.066
imean           2.748     2.728     2.710
imin            1.569     1.617     1.591
imax            3.902     3.883     3.883
excite_mean     0.069     0.066     0.066
fracstop        1.000     1.000     1.000
cjmean          3.080     3.081     3.081

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       189.0     186.6     184.5
kozaiamp        179.9     179.9     180.0