Orbit Fit and Astrometric record for 00QN251

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: 00QN251   
# Created Mon Oct 23 01:37:09 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:  14.01y
# First observation: 2000/08/26
#  Last observation: 2014/08/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.002028   0.031972  -0.000011   0.000128   0.031671   0.000000
# Chi-squared of fit:    99.82 DOF:   36 RMS:  0.39
# Min/Max residuals:    -0.91    0.70
# Exact a, adot, b, bdot, g, gdot:
  1.576772E-05  3.039774E-02  1.529159E-06  1.228904E-04  2.774352E-02  1.284919E-05
# Covariance matrix:
  2.1489E-13 -5.7124E-14  2.4705E-16 -1.6921E-16  4.7025E-14 -9.8420E-14
 -5.7124E-14  4.1554E-14 -2.4963E-16  1.5318E-16  6.5939E-14  8.9332E-14
  2.4705E-16 -2.4963E-16  1.3476E-13 -1.5695E-14 -5.2422E-16 -5.8852E-16
 -1.6921E-16  1.5318E-16 -1.5695E-14  3.6954E-15  2.6137E-16  3.6148E-16
  4.7025E-14  6.5939E-14 -5.2422E-16  2.6137E-16  5.2299E-13  1.5332E-13
 -9.8420E-14  8.9332E-14 -5.8852E-16  3.6148E-16  1.5332E-13  2.1080E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.261066   -4.620764    0.383515   -0.004398   -0.931619  2451782.815213
# Heliocentric elements and errors
Epoch:              2451780.5000  =  2000/08/24
Mean Anomaly:          355.23180 +/-     0.006
Argument of Peri:      318.44871 +/-     0.014
Long of Asc Node:       42.56056 +/-     0.013
Inclination:             0.34357 +/-     0.000
Eccentricity:         0.12880469 +/-    0.0001
Semi-Major Axis:     42.42268788 +/-    0.0050
Time of Perihelion: 2453117.2416 +/-       1.5
Perihelion:          36.95844679 +/-    0.0056
Aphelion:            47.88692897 +/-    0.0067
Period (y)              276.3156 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.83029903 +/-    0.0009
Ecliptic Y           -3.35614595 +/-    0.0001
Ecliptic Z           -0.16420279 +/-    0.0000
Ecliptic XDOT         0.00023569 +/-    0.0000
Ecliptic YDOT         0.00299524 +/-    0.0000
Ecliptic ZDOT         0.00001227 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.98326114 +/-    0.0009
Geocenter to KBO     36.04445592 +/-    0.0009
# Hcoef:  7.33

The following table shows the complete astrometric record for 00QN251. 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 (00QN251) followed by the observatory code and reference code for the source of the astrometry.

2000 08  26.31447  23 43 27.05   -02 04 33.6   22.3R 00QN251   807  Cd1703      
2000 08  26.38655  23 43 26.72   -02 04 35.8         00QN251   807  Cd1703      
2000 08  28.30428  23 43 18.01   -02 05 32.5   22.6R 00QN251   807  Cd1703      
2000 08  28.38010  23 43 17.65   -02 05 34.8         00QN251   807  Cd1703      
2001 09  25.40268  23 47 26.84   -01 38 09.9         00QN251   568  Cd5768      
2001 09  25.42990  23 47 26.70   -01 38 10.6         00QN251   568  Cd5768      
2001 09  26.42502  23 47 21.79   -01 38 42.5         00QN251   568  Cd5768      
2002 08  11.37667  23 57 14.33   -00 34 00.6   21.9R 00QN251   807  Ch1309      
2002 08  12.31638  23 57 11.05   -00 34 22.5         00QN251   807  Ch1309      
2002 09  09.39391  23 55 10.69   -00 47 28.2   22.7R 00QN251   662  Cg3073      
2002 09  09.46550  23 55 10.34   -00 47 30.2         00QN251   662  Cg3073      
2003 11  21.11699  23 56 35.16   -00 37 31.4   23.5R 00QN251   695  Cj3636      
2003 11  22.09707  23 56 33.27   -00 37 43.5         00QN251   695  Cj3636      
2005 08  31.41750  00 14 58.75   +01 22 46.1   22.3R 00QN251   250  S~06AN      
2005 08  31.42421  00 14 58.72   +01 22 45.8         00QN251   250  S~06AN      
2005 08  31.43093  00 14 58.69   +01 22 45.7         00QN251   250  S~06AN      
2008 10  02.234651 00 31 35.35   +03 11 37.6   23.0V 00QN251   645  C~2FZD      
2008 10  02.235481 00 31 35.38   +03 11 37.7   22.2V 00QN251   645  C~2FZD      
2008 10  02.237968 00 31 35.35   +03 11 37.6   24.3V 00QN251   645  C~2FZD      
2014 08  29.60016  01 12 32.936  +07 31 53.87  23.0r 00QN251   568  C~18AT      
2014 08  29.63054  01 12 32.850  +07 31 53.52  23.0r 00QN251   568  C~18AT      

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     0.32       0.00    -0.30
  2   0.0002     -5.41     0.29      -0.06    -0.38
  3   0.0054   -147.76     0.28      -0.30    -0.44
  4   0.0057   -153.62     0.17      -0.28    -0.44
  5   1.0817   3928.72    -0.64      26.30    -0.05
  6   1.0818   3926.51    -0.62      26.49     0.12
  7   1.0845   3846.25    -0.91      26.46    -0.04
  8   1.9577  13562.46     0.20      54.17     0.45
  9   1.9603  13508.38     0.32      53.66     0.13
 10   2.0372  11532.27    -0.02      51.28     0.32
 11   2.0374  11526.65     0.09      51.54     0.54
 12   3.2356  12937.01     0.41      94.69    -0.13
 13   3.2383  12906.07     0.54      94.87    -0.36
 14   5.0133  31212.84    -0.11     129.42     0.70
 15   5.0133  31212.30    -0.16     129.32     0.60
 16   5.0133  31211.83    -0.14     129.41     0.69
 17   8.1011  48125.57    -0.28     208.47    -0.44
 18   8.1011  48126.05     0.27     208.38    -0.53
 19   8.1011  48125.57     0.01     208.47    -0.44
 20  14.0076  92744.05    -0.21     374.50    -0.07
 21  14.0077  92742.47     0.22     374.67     0.09

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.

00QN251    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.504    42.519    42.489
ecceobj         0.130     0.131     0.130
incobj          0.343     0.343     0.343
qmin           36.059    36.197    36.363
qmax           49.148    48.981    48.897
amean          42.329    42.329    42.328
amin           41.874    41.896    41.865
amax           42.818    42.814    42.862
emean           0.127     0.126     0.121
emin            0.104     0.109     0.096
emax            0.149     0.144     0.142
imean           2.372     1.951     2.033
imin            0.949     0.858     0.578
imax            3.733     2.906     4.733
excite_mean     0.135     0.131     0.127
fracstop        1.000     1.000     1.000
cjmean          3.060     3.062     3.063

libcent 0       180.2     180.4     181.9
libamp  0       109.8      97.8     126.2
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       189.3     174.9     129.1
kozaiamp        179.9     179.9     179.6