Orbit Fit and Astrometric record for 01KY76

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: 01KY76    
# Created Wed Dec 13 02:37:08 2017
# Orbit generated from Bernstein formalism
# Fitting   33 observations of   33
# Arc:   2.03y
# First observation: 2001/05/22
#  Last observation: 2003/06/01
Preliminary a, adot, b, bdot, g, gdot:
  -0.000160   0.026039   0.000014  -0.001715   0.025971   0.000000
# Chi-squared of fit:   107.45 DOF:   60 RMS:  0.32
# Min/Max residuals:    -0.72    0.72
# Exact a, adot, b, bdot, g, gdot:
  1.622723E-05  2.578759E-02 -3.131448E-07 -1.691042E-03  2.629397E-02 -6.147499E-03
# Covariance matrix:
  2.4428E-13 -3.1468E-13 -3.5537E-15  1.1331E-14  7.7147E-15 -3.5321E-12
 -3.1468E-13  7.4514E-13  1.4760E-14 -4.3691E-14  1.6375E-13  1.3388E-11
 -3.5537E-15  1.4760E-14  1.8722E-13 -1.5705E-13  6.2540E-15  3.5040E-13
  1.1331E-14 -4.3691E-14 -1.5705E-13  1.7394E-13 -1.5345E-14 -1.0272E-12
  7.7147E-15  1.6375E-13  6.2540E-15 -1.5345E-14  2.5320E-13  4.4686E-12
 -3.5321E-12  1.3388E-11  3.5040E-13 -1.0272E-12  4.4686E-12  3.1401E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.311552 -108.416140    0.183863    0.022805   -1.001769  2452051.757123
# Heliocentric elements and errors
Epoch:              2452050.5000  =  2001/05/21
Mean Anomaly:          284.21866 +/-     0.078
Argument of Peri:      264.25976 +/-     0.031
Long of Asc Node:       90.03461 +/-     0.004
Inclination:             3.97697 +/-     0.001
Eccentricity:         0.23645857 +/-    0.0006
Semi-Major Axis:     39.13683168 +/-    0.0119
Time of Perihelion: 2470875.5734 +/-      17.5
Perihelion:          29.88259262 +/-    0.0267
Aphelion:            48.39107075 +/-    0.0291
Period (y)              244.8424 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -12.49859235 +/-    0.0002
Ecliptic Y          -36.96183634 +/-    0.0007
Ecliptic Z            0.87048985 +/-    0.0000
Ecliptic XDOT         0.00274010 +/-    0.0000
Ecliptic YDOT        -0.00024264 +/-    0.0000
Ecliptic ZDOT        -0.00019049 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.02755321 +/-    0.0007
Geocenter to KBO     38.03153248 +/-    0.0007
# Hcoef:  6.09

The following table shows the complete astrometric record for 01KY76. 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 (01KY76) followed by the observatory code and reference code for the source of the astrometry.

2001 05  22.25638  16 40 58.52   -20 52 24.8   21.6R 01KY76    807  Cd1817      
2001 05  22.34551  16 40 58.04   -20 52 23.9         01KY76    807  Cd1817      
2001 06  10.04604  16 39 16.00   -20 49 24.4   22.5R 01KY76    304  Cd1817      
2001 06  10.12100  16 39 15.59   -20 49 23.7         01KY76    304  Cd1817      
2001 08  19.07508  16 35 10.54   -20 43 53.6   21.1R 01KY76    807  Cd7687      
2001 08  20.08320  16 35 10.09   -20 43 55.7         01KY76    807  Cd7687      
2001 08  21.08681  16 35 09.74   -20 43 57.8         01KY76    807  Cd7687      
2002 04  06.29816  16 50 26.16   -21 15 21.4   20.9R 01KY76    807  Ch1324      
2002 04  07.30429  16 50 23.71   -21 15 17.1         01KY76    807  Ch1324      
2002 04  07.40001  16 50 23.44   -21 15 16.3         01KY76    807  Ch1324      
2002 04  11.43605  16 50 12.57   -21 14 56.0   20.0R 01KY76    695  Cg5781      
2002 04  11.48065  16 50 12.44   -21 14 55.3         01KY76    695  Cg5781      
2002 04  11.55345  16 50 12.25   -21 14 54.9   21.5R 01KY76    568  Cf8904      
2002 04  11.62587  16 50 12.05   -21 14 54.6         01KY76    568  Cf8904      
2002 06  04.30583  16 46 03.04   -21 07 50.9         01KY76    675  Cf8904      
2002 06  04.34488  16 46 02.80   -21 07 50.3         01KY76    675  Cf8904      
2002 06  06.42192  16 45 51.32   -21 07 31.2         01KY76    568  Cf8904      
2002 06  06.42550  16 45 51.30   -21 07 31.1         01KY76    568  Cf8904      
2002 06  06.43219  16 45 51.25   -21 07 31.0         01KY76    568  Cf8904      
2002 06  06.44006  16 45 51.21   -21 07 31.0         01KY76    568  Cf8904      
2002 06  06.44520  16 45 51.18   -21 07 30.8         01KY76    568  Cf8904      
2002 06  06.44893  16 45 51.15   -21 07 31.0         01KY76    568  Cf8904      
2002 06  06.45257  16 45 51.15   -21 07 30.8         01KY76    568  Cf8904      
2002 06  06.45925  16 45 51.10   -21 07 31.0         01KY76    568  Cf8904      
2002 06  06.46713  16 45 51.03   -21 07 30.7         01KY76    568  Cf8904      
2002 06  06.47226  16 45 51.02   -21 07 30.8         01KY76    568  Cf8904      
2002 06  15.29564  16 45 02.68   -21 06 15.4   22.6R 01KY76    695  Cf8904      
2002 06  15.32159  16 45 02.53   -21 06 15.3   22.5R 01KY76    695  Cf8904      
2002 07  13.17687  16 42 47.53   -21 02 57.9   21.7R 01KY76    304  Cf9823      
2002 07  13.19883  16 42 47.43   -21 02 57.8         01KY76    304  Cf9823      
2003 05  31.47406  16 52 46.53   -21 25 14.5   22.1R 01KY76    568  Ci1422      
2003 05  31.50678  16 52 46.33   -21 25 14.0         01KY76    568  Ci1422      
2003 06  01.50942  16 52 40.81   -21 25 05.9         01KY76    568  Ci1422      

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    -0.15       0.00    -0.15
  2   0.0002     -6.79    -0.06      -0.01    -0.11
  3   0.0514  -1448.32    -0.04     -16.44     0.02
  4   0.0516  -1454.11    -0.01     -16.54     0.05
  5   0.2432  -4904.03    -0.07    -171.78    -0.07
  6   0.2459  -4909.98     0.12    -174.76    -0.16
  7   0.2487  -4914.54     0.15    -177.55    -0.05
  8   0.8735   8060.17    -0.09    -355.24    -0.17
  9   0.8762   8025.60     0.13    -355.08    -0.67
 10   0.8765   8021.75    -0.22    -354.73    -0.38
 11   0.8876   7868.22    -0.06    -352.81    -0.72
 12   0.8877   7866.33    -0.08    -352.33    -0.27
 13   0.8879   7863.64     0.15    -352.25    -0.27
 14   0.8881   7860.83     0.40    -352.29    -0.34
 15   1.0350   4349.39     0.45    -361.45    -0.39
 16   1.0351   4345.98     0.14    -361.28    -0.18
 17   1.0408   4184.16     0.12    -362.69     0.55
 18   1.0408   4183.87     0.11    -362.63     0.62
 19   1.0409   4183.17    -0.07    -362.62     0.63
 20   1.0409   4182.61    -0.00    -362.69     0.57
 21   1.0409   4182.17    -0.03    -362.54     0.72
 22   1.0409   4181.78    -0.13    -362.79     0.48
 23   1.0409   4181.75     0.13    -362.60     0.68
 24   1.0409   4181.08    -0.01    -362.88     0.40
 25   1.0410   4180.07    -0.39    -362.71     0.58
 26   1.0410   4179.95    -0.11    -362.83     0.47
 27   1.0651   3499.20    -0.14    -374.32    -0.14
 28   1.0652   3497.11    -0.23    -374.49    -0.27
 29   1.1415   1597.65     0.11    -424.26    -0.31
 30   1.1415   1596.24    -0.02    -424.35    -0.35
 31   2.0239  10081.58    -0.11    -713.41    -0.41
 32   2.0240  10078.74    -0.35    -713.23    -0.20
 33   2.0267  10001.06     0.38    -714.14    -0.19

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.

01KY76    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.206    39.242    39.171
ecceobj         0.238     0.240     0.236
incobj          3.975     3.975     3.975
qmin           29.452    29.419    29.496
qmax           49.889    50.028    49.910
amean          39.455    39.455    39.455
amin           39.043    39.048    39.024
amax           39.941    39.942    39.970
emean           0.236     0.237     0.235
emin            0.220     0.224     0.220
emax            0.251     0.253     0.250
imean           1.637     1.464     1.643
imin            0.631     0.697     0.658
imax            2.526     2.527     2.523
excite_mean     0.238     0.239     0.237
fracstop        1.000     1.000     1.000
cjmean          2.987     2.986     2.988

libcent 0       180.1     180.6     180.1
libamp  0        63.7      55.8      75.4
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       195.1     211.6     198.5
kozaiamp        179.8     180.0     179.9