Orbit Fit and Astrometric record for 99OD4

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: 99OD4     
# Created Mon Dec 18 02:37:00 2017
# Orbit generated from Bernstein formalism
# Fitting   38 observations of   39
# Arc:  14.22y
# First observation: 1999/07/19
#  Last observation: 2013/10/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000521   0.020826  -0.000153   0.005361   0.022941   0.000000
# Chi-squared of fit:    54.17 DOF:   70 RMS:  0.21
# Min/Max residuals:    -0.42    0.52
# Exact a, adot, b, bdot, g, gdot:
  1.026460E-05  2.019733E-02  1.521164E-06  5.177953E-03  2.300991E-02 -1.165085E-03
# Covariance matrix:
  1.2253E-13 -8.4951E-14  1.6835E-14 -2.3021E-14  5.6828E-14 -2.9951E-13
 -8.4951E-14  1.1899E-13 -2.3188E-14  3.1900E-14  2.3458E-14  4.0973E-13
  1.6835E-14 -2.3188E-14  5.2963E-14 -1.2548E-14 -1.2780E-15 -8.3369E-14
 -2.3021E-14  3.1900E-14 -1.2548E-14  1.2692E-14  2.2572E-15  1.1456E-13
  5.6828E-14  2.3458E-14 -1.2780E-15  2.2572E-15  2.6696E-13  1.5250E-14
 -2.9951E-13  4.0973E-13 -8.3369E-14  1.1456E-13  1.5250E-14  1.4751E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.687526  -55.688409    0.148454    0.011797   -1.003145  2451378.919813
# Heliocentric elements and errors
Epoch:              2451370.5000  =  1999/07/11
Mean Anomaly:          225.05431 +/-     0.035
Argument of Peri:      144.64508 +/-     0.028
Long of Asc Node:      301.50993 +/-     0.000
Inclination:            14.39063 +/-     0.000
Eccentricity:         0.09400889 +/-    0.0001
Semi-Major Axis:     41.54191919 +/-    0.0033
Time of Perihelion: 2488029.8503 +/-       8.5
Perihelion:          37.63660935 +/-    0.0042
Aphelion:            45.44722903 +/-    0.0047
Period (y)              267.7553 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.94721055 +/-    0.0005
Ecliptic Y          -36.80491969 +/-    0.0008
Ecliptic Z            0.52157356 +/-    0.0000
Ecliptic XDOT         0.00189926 +/-    0.0000
Ecliptic YDOT         0.00148378 +/-    0.0000
Ecliptic ZDOT         0.00061444 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.46613843 +/-    0.0007
Geocenter to KBO     43.45953458 +/-    0.0010
# Hcoef:  7.20

The following table shows the complete astrometric record for 99OD4. 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 (99OD4) followed by the observatory code and reference code for the source of the astrometry.

1999 07  19.41907  20 25 53.00   -18 30 47.9   23.4R 99OD4     568  Ca6755      
1999 07  19.44678  20 25 52.85   -18 30 48.3         99OD4     568  Ca6755      
1999 07  19.47521  20 25 52.71   -18 30 48.9         99OD4     568  Ca6755      
1999 08  06.16666  20 24 28.84   -18 34 45.3         99OD4     807  Ca6755      
1999 08  06.17234  20 24 28.81   -18 34 44.7         99OD4     807  Ca6755      
1999 08  06.17802  20 24 28.79   -18 34 45.1         99OD4     807  Ca6755      
1999 08  06.26267  20 24 28.37   -18 34 46.5         99OD4     807  Ca6755      
1999 08  06.26823  20 24 28.33   -18 34 46.8         99OD4     807  Ca6755      
1999 08  06.27391  20 24 28.32   -18 34 46.5         99OD4     807  Ca6755      
1999 08  07.16469  20 24 24.16   -18 34 58.6         99OD4     807  Ca6755      
1999 08  07.23817  20 24 23.83   -18 34 59.2         99OD4     807  Ca6755      
1999 08  07.24393  20 24 23.78   -18 34 59.7         99OD4     807  Ca6755      
1999 08  07.24962  20 24 23.74   -18 34 59.4         99OD4     807  Ca6755      
2000 06  07.52960  20 33 01.44   -17 49 38.0         99OD4     568  Cb5150      
2000 06  07.56054  20 33 01.36   -17 49 38.3         99OD4     568  Cb5150      
2000 06  08.56817  20 32 58.47   -17 49 44.7         99OD4     568  Cb5150      
2000 07  24.08177  20 29 53.79   -17 58 04.8         99OD4     809  Cb7609      
2000 07  24.09600  20 29 53.72   -17 58 05.1   23.5R 99OD4     809  Cb7609      
2000 07  24.11602  20 29 53.62   -17 58 05.3   23.5R 99OD4     809  Cb7609      
2000 08  02.10854  20 29 10.95   -18 00 09.6         99OD4     809  Cb7609      
2000 08  02.15962  20 29 10.68   -18 00 10.6         99OD4     809  Cb7609      
2000 08  05.32778  20 28 55.78   -18 00 54.2   23.6R 99OD4     568  Cb7609      
2000 08  05.37175  20 28 55.57   -18 00 55.0         99OD4     568  Cb7609      
2000 08  05.41993  20 28 55.32   -18 00 55.6   23.6R 99OD4     568  Cb7609      
2000 08  06.31837  20 28 51.15   -18 01 08.0   23.1R 99OD4     568  Cb7609      
2000 08  06.36419  20 28 50.93   -18 01 08.5   23.2R 99OD4     568  Cb7609      
2000 08  06.40555  20 28 50.73   -18 01 09.2         99OD4     568  Cb7609      
2000 09  23.24918  20 25 52.66   -18 09 46.6   23.5R 99OD4     568  Cc0831      
2000 09  23.29902  20 25 52.54   -18 09 47.0   23.8R 99OD4     568  Cc0831      
2000 09  23.34696  20 25 52.43   -18 09 47.4   24.0R 99OD4     568  Cc0831      
2000 09  24.25098  20 25 50.44   -18 09 52.8   23.7R 99OD4     568  Cc0831      
2000 09  24.30045  20 25 50.32   -18 09 53.3   23.8R 99OD4     568  Cc0831      
2000 09  24.35897  20 25 50.18   -18 09 53.5   23.7R 99OD4     568  Cc0831      
2001 07  25.37212  20 34 13.78   -17 23 57.8   22.5R 99OD4     568  Cd2765      
2001 07  25.42968  20 34 13.50   -17 23 58.6   22.7R 99OD4     568  Cd2765      
2001 07  25.49457  20 34 13.18   -17 23 59.6   22.6R 99OD4     568  Cd2765      
2001 07  26.43385  20 34 08.74   -17 24 13.1         99OD4     568  Cd3195      
2013 10  07.13223  21 21 27.78   -10 21 16.0   22.3R 99OD4     695  C~0zdB      
2013 10  07.20671  21 21 27.58   -10 21 16.8         99OD4     695  C~0zdB      

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 (   0.75)      0.00 (   0.42)
  2   0.0001     -2.17     0.50       0.12     0.45
  3   0.0002     -4.24     0.39       0.00     0.24
  4   0.0486  -1219.10    -0.01      51.15    -0.22
  5   0.0486  -1219.37     0.11      51.84     0.44
  6   0.0486  -1219.74     0.13      51.51     0.11
  7   0.0489  -1225.88    -0.17      51.55    -0.12
  8   0.0489  -1226.50    -0.41      51.40    -0.29
  9   0.0489  -1226.57    -0.09      51.72     0.01
 10   0.0513  -1286.91    -0.16      53.83    -0.30
 11   0.0515  -1291.61     0.19      54.35    -0.00
 12   0.0515  -1292.42    -0.22      54.03    -0.34
 13   0.0516  -1292.90    -0.32      54.45     0.07
 14   0.8874   6523.75    -0.01     924.43     0.52
 15   0.8875   6522.57     0.10     924.42     0.38
 16   0.8902   6480.95     0.01     928.36     0.41
 17   1.0148   3800.72     0.05    1085.95    -0.19
 18   1.0149   3799.68     0.00    1085.90    -0.28
 19   1.0149   3798.25    -0.03    1086.05    -0.19
 20   1.0395   3177.28    -0.01    1112.31     0.06
 21   1.0397   3173.30    -0.42    1112.26    -0.13
 22   1.0483   2956.46    -0.02    1121.09     0.17
 23   1.0485   2953.35    -0.07    1121.04    -0.01
 24   1.0486   2949.75    -0.33    1121.31     0.12
 25   1.0511   2889.02     0.08    1123.58    -0.01
 26   1.0512   2885.85     0.09    1123.84     0.13
 27   1.0513   2882.91     0.01    1123.85     0.01
 28   1.1823    293.54     0.25    1226.69     0.08
 29   1.1824    291.79     0.17    1226.71    -0.00
 30   1.1826    290.17     0.17    1226.69    -0.12
 31   1.1850    261.33     0.13    1228.15    -0.16
 32   1.1852    259.55    -0.04    1228.07    -0.33
 33   1.1853    257.57    -0.13    1228.34    -0.18
 34   2.0177   7907.79     0.15    2163.00    -0.05
 35   2.0178   7903.70     0.11    2163.21    -0.02
 36   2.0180   7899.01    -0.03    2163.38    -0.07
 37   2.0206   7833.99    -0.14    2166.00    -0.22
 38  14.2196  55912.52     0.18   15675.45    -0.14
 39  14.2198  55909.23    -0.20   15675.53     0.20

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.

99OD4    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.478    41.488    41.468
ecceobj         0.095     0.095     0.096
incobj         14.405    14.405    14.405
qmin           36.558    36.547    36.486
qmax           46.654    46.640    46.593
amean          41.471    41.484    41.453
amin           41.146    41.162    41.117
amax           41.813    41.839    41.819
emean           0.099     0.099     0.099
emin            0.084     0.083     0.084
emax            0.116     0.116     0.116
imean          15.770    15.774    15.761
imin           14.894    14.902    14.870
imax           16.640    16.645    16.638
excite_mean     0.289     0.289     0.289
fracstop        1.000     1.000     1.000
cjmean          2.973     2.974     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       180.3     180.8     180.1
kozaiamp        179.9     179.9     180.0