Orbit Fit and Astrometric record for 99CK158

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: 99CK158   
# Created Thu Nov 15 02:07:35 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   17 observations of   17
# Arc:  14.09y
# First observation: 1999/02/10
#  Last observation: 2013/03/13
# Chi-squared of fit:    23.44 DOF:   28 RMS:  0.21
# Min/Max residuals:    -0.32    0.69
# Exact a, adot, b, bdot, g, gdot:
  1.562321E-05  2.626925E-02  4.830835E-06  8.073111E-03  2.652012E-02  1.211037E-03
# Covariance matrix:
  4.6058E-13  1.6761E-15 -4.3873E-16  3.9025E-15  6.8159E-13  2.1076E-14
  1.6761E-15  3.9965E-13 -6.2432E-14  1.2616E-13  4.4264E-13  1.0465E-12
 -4.3873E-16 -6.2432E-14  1.3667E-13 -3.0145E-14 -6.6787E-14 -1.6478E-13
  3.9025E-15  1.2616E-13 -3.0145E-14  4.3191E-14  1.4101E-13  3.3289E-13
  6.8159E-13  4.4264E-13 -6.6787E-14  1.4101E-13  1.8334E-12  1.1470E-12
  2.1076E-14  1.0465E-12 -1.6478E-13  3.3289E-13  1.1470E-12  2.7616E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.029190  127.280133   -0.242708   -0.000709   -0.963103  2451219.813693
# Heliocentric elements and errors
Epoch:              2451220.5000  =  1999/02/11
Mean Anomaly:           42.84203 +/-     0.077
Argument of Peri:      310.93769 +/-     0.092
Long of Asc Node:      127.72242 +/-     0.000
Inclination:            17.11323 +/-     0.000
Eccentricity:         0.07349586 +/-    0.0001
Semi-Major Axis:     40.75185475 +/-    0.0079
Time of Perihelion: 2439912.4684 +/-      20.7
Perihelion:          37.75676199 +/-    0.0083
Aphelion:            43.74694752 +/-    0.0094
Period (y)              260.1533 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -23.60839909 +/-    0.0012
Ecliptic Y           30.62204024 +/-    0.0015
Ecliptic Z           -0.01903156 +/-    0.0000
Ecliptic XDOT        -0.00223552 +/-    0.0000
Ecliptic YDOT        -0.00153383 +/-    0.0000
Ecliptic ZDOT         0.00083338 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.66605364 +/-    0.0014
Geocenter to KBO     37.70723675 +/-    0.0019
# Hcoef:  8.19

The following table shows the complete astrometric record for 99CK158. 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 (99CK158) followed by the observatory code and reference code for the source of the astrometry.

1999 02  10.31295  08 38 42.04   +18 25 24.4   23.8R 99CK158   568  Cb7527      
1999 02  10.36472  08 38 41.77   +18 25 25.7   23.8R 99CK158   568  Cb7527      
1999 02  10.40914  08 38 41.52   +18 25 26.9   23.8R 99CK158   568  Cb7527      
1999 03  15.42036  08 36 15.92   +18 37 01.9   23.8R 99CK158   568  Cb7527      
1999 03  15.47220  08 36 15.73   +18 37 02.7   23.8R 99CK158   568  Cb7527      
1999 05  06.28539  08 35 36.13   +18 43 24.0   23.8R 99CK158   568  Cb7527      
1999 05  06.33480  08 35 36.23   +18 43 24.2   23.8R 99CK158   568  Cb7527      
1999 05  07.33848  08 35 38.23   +18 43 21.1   23.8R 99CK158   568  Cb7527      
2000 04  04.35459  08 41 59.36   +18 45 26.6   24.1R 99CK158   568  Cb7527      
2000 04  05.37207  08 41 57.88   +18 45 36.2   23.9R 99CK158   568  Cb7527      
2000 04  06.31943  08 41 56.58   +18 45 44.7   24.1R 99CK158   568  Cb7527      
2000 04  06.41384  08 41 56.48   +18 45 45.6   24.0R 99CK158   568  Cb7527      
2001 03  24.17437  08 48 56.69   +18 46 08.3   23.2R 99CK158   695  Cc7487      
2001 03  24.26888  08 48 56.42   +18 46 10.0         99CK158   695  Cc7487      
2013 03  12.15589  10 07 10.82   +18 12 41.1   23.5R 99CK158   695  C~0uco      
2013 03  12.21765  10 07 10.52   +18 12 42.4         99CK158   695  C~0uco      
2013 03  13.14965  10 07 06.25   +18 13 05.8         99CK158   695  C~0uco      

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     0.01       0.00    -0.01
  2   0.0001      0.00     0.08       0.00     0.03
  3   0.0003      0.00    -0.13       0.00     0.15
  4   0.0906      0.00     0.31       0.00    -0.04
  5   0.0908      0.00     0.07       0.00    -0.10
  6   0.2326      0.00    -0.27       0.00    -0.15
  7   0.2328      0.00    -0.14       0.00     0.19
  8   0.2355      0.00     0.15       0.00    -0.11
  9   1.1473      0.00     0.05       0.00    -0.27
 10   1.1501      0.00     0.03       0.00    -0.22
 11   1.1527      0.00    -0.32       0.00    -0.26
 12   1.1529      0.00     0.12       0.00    -0.17
 13   2.1160      0.00     0.06       0.00     0.32
 14   2.1162      0.00     0.01       0.00     0.69
 15  14.0831      0.00    -0.06       0.00     0.06
 16  14.0832      0.00    -0.19       0.00    -0.19
 17  14.0858      0.00     0.24       0.00     0.06

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.

99CK158    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.872    40.872    40.872
ecceobj         0.076     0.076     0.076
incobj         17.092    17.092    17.092
qmin           36.861    36.847    36.856
qmax           45.176    45.165    45.180
amean          40.886    40.886    40.886
amin           40.569    40.562    40.566
amax           41.229    41.229    41.229
emean           0.079     0.079     0.079
emin            0.064     0.064     0.064
emax            0.096     0.096     0.096
imean          15.764    15.763    15.763
imin           14.850    14.847    14.850
imax           16.787    16.788    16.785
excite_mean     0.283     0.283     0.283
fracstop        1.000     1.000     1.000
cjmean          2.973     2.973     2.973

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       178.4     178.4     178.5
kozaiamp        180.0     179.9     179.9