Orbit Fit and Astrometric record for 99OJ4

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: 99OJ4     
# Created Tue Dec 12 02:37:03 2017
# Orbit generated from Bernstein formalism
# Fitting   63 observations of   63
# Arc:   9.21y
# First observation: 1999/07/18
#  Last observation: 2008/10/01
Preliminary a, adot, b, bdot, g, gdot:
  -0.000296   0.027639   0.000055  -0.001913   0.028357   0.000000
# Chi-squared of fit:   264.92 DOF:  120 RMS:  0.36
# Min/Max residuals:    -0.73    0.89
# Exact a, adot, b, bdot, g, gdot:
  1.825039E-05  2.710816E-02 -2.547368E-07 -1.877635E-03  2.681205E-02 -4.132066E-04
# Covariance matrix:
  1.4257E-13 -5.8935E-14 -3.8787E-15  3.3468E-15 -1.2225E-14 -1.9267E-13
 -5.8935E-14  5.2841E-14  4.1928E-15 -3.6141E-15  4.5768E-14  2.0702E-13
 -3.8787E-15  4.1928E-15  9.1142E-14 -1.2993E-14  3.6829E-15  1.7208E-14
  3.3468E-15 -3.6141E-15 -1.2993E-14  2.6240E-15 -3.1637E-15 -1.4834E-14
 -1.2225E-14  4.5768E-14  3.6829E-15 -3.1637E-15  1.3523E-13  1.7822E-13
 -1.9267E-13  2.0702E-13  1.7208E-14 -1.4834E-14  1.7822E-13  8.5005E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.524135  -44.651346    0.352121   -0.008937   -0.951180  2451378.020123
# Heliocentric elements and errors
Epoch:              2451370.5000  =  1999/07/11
Mean Anomaly:          267.83646 +/-     0.080
Argument of Peri:      282.60378 +/-     0.073
Long of Asc Node:      127.49616 +/-     0.000
Inclination:             3.99565 +/-     0.000
Eccentricity:         0.02727689 +/-    0.0000
Semi-Major Axis:     38.18691954 +/-    0.0018
Time of Perihelion: 2473436.6729 +/-      19.0
Perihelion:          37.14529917 +/-    0.0022
Aphelion:            39.22853992 +/-    0.0023
Period (y)              235.9827 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.96919491 +/-    0.0004
Ecliptic Y          -27.12772959 +/-    0.0004
Ecliptic Z           -0.34117294 +/-    0.0000
Ecliptic XDOT         0.00191070 +/-    0.0000
Ecliptic YDOT         0.00200861 +/-    0.0000
Ecliptic ZDOT        -0.00019129 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.25398784 +/-    0.0004
Geocenter to KBO     37.29666132 +/-    0.0005
# Hcoef:  7.20

The following table shows the complete astrometric record for 99OJ4. 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 (99OJ4) followed by the observatory code and reference code for the source of the astrometry.

1999 07  18.51938  21 11 53.44   -16 44 03.8   22.7R 99OJ4     568  Ca7327      
1999 07  18.54662  21 11 53.31   -16 44 04.4         99OJ4     568  Ca7327      
1999 08  11.41086  21 09 51.77   -16 53 31.6   22.5R 99OJ4     675  Ca7327      
1999 08  11.42851  21 09 51.67   -16 53 31.9   22.4R 99OJ4     675  Ca7327      
1999 08  11.43598  21 09 51.63   -16 53 32.1         99OJ4     675  Ca7327      
2000 07  29.23195  21 17 16.55   -16 26 51.3   22.0R 99OJ4     807  Cc0831      
2000 07  29.34515  21 17 15.97   -16 26 54.2         99OJ4     807  Cc0831      
2000 07  31.11506  21 17 06.94   -16 27 37.3         99OJ4     809  Cb7609      
2000 07  31.18342  21 17 06.58   -16 27 39.2   22.6R 99OJ4     809  Cb7609      
2000 07  31.26985  21 17 06.13   -16 27 41.2   22.8R 99OJ4     809  Cb7609      
2000 08  02.27861  21 16 55.81   -16 28 30.9   22.9R 99OJ4     809  Cb7609      
2000 08  02.28501  21 16 55.78   -16 28 31.0         99OJ4     809  Cb7609      
2000 08  02.32265  21 16 55.58   -16 28 31.9   22.9R 99OJ4     809  Cb7609      
2000 08  25.06470  21 14 58.83   -16 37 43.3   22.1R 99OJ4     807  Ch1162      
2000 08  25.12736  21 14 58.49   -16 37 44.6         99OJ4     807  Ch1162      
2001 07  25.52826  21 23 55.01   -16 02 51.4   22.5R 99OJ4     568  Cd2765      
2001 07  25.56191  21 23 54.84   -16 02 52.0   22.4R 99OJ4     568  Cd2765      
2001 07  25.59893  21 23 54.66   -16 02 52.8   22.3R 99OJ4     568  Cd2765      
2002 08  11.15657  21 28 49.48   -15 46 43.3   21.2R 99OJ4     807  Cg2699      
2002 08  12.09591  21 28 44.54   -15 47 07.7         99OJ4     807  Cg2699      
2002 08  12.19185  21 28 44.05   -15 47 10.6         99OJ4     807  Cg2699      
2004 08  19.37071  21 40 37.34   -15 02 37.3   23.3g 99OJ4     568  C74769      
2004 08  19.39699  21 40 37.20   -15 02 38.1   23.1g 99OJ4     568  C74769      
2004 08  19.42797  21 40 37.04   -15 02 38.9   23.2g 99OJ4     568  C74769      
2004 08  20.40532  21 40 32.05   -15 03 04.7   22.8g 99OJ4     568  C74769      
2004 10  13.26274  21 36 56.10   -15 21 03.9   22.9i 99OJ4     568  C~0V7v      
2004 10  13.32421  21 36 55.95   -15 21 04.4   23.1i 99OJ4     568  C~0V7v      
2004 10  13.38309  21 36 55.83   -15 21 04.8   22.8i 99OJ4     568  C~0V7v      
2005 07  24.70111  21 49 01.02   -14 26 02.4   22.9R 99OJ4     250  S~06AK      
2005 07  24.70782  21 49 00.99   -14 26 02.6         99OJ4     250  S~06AK      
2005 07  24.71454  21 49 00.95   -14 26 02.7         99OJ4     250  S~06AK      
2005 10  04.14180  21 43 32.73   -14 54 46.7   22.5R 99OJ4     675  C~0V7v      
2005 10  04.19667  21 43 32.55   -14 54 47.5   22.8R 99OJ4     675  C~0V7v      
2006 06  19.21409  21 57 15.71   -13 48 03.5   22.6R 99OJ4     304  Cr4803      
2006 06  19.29103  21 57 15.55   -13 48 04.4         99OJ4     304  Cr4803      
2006 10  21.92825  21 49 01.75   -14 33 10.7         99OJ4     950  C~0V7v      
2006 10  22.93219  21 49 00.14   -14 33 18.2         99OJ4     950  C~0V7v      
2007 07  05.94834  22 02 41.47   -13 26 18.9   23.5R 99OJ4     250  S~06AK      
2007 07  05.95598  22 02 41.45   -13 26 19.0         99OJ4     250  S~06AK      
2007 07  05.96362  22 02 41.43   -13 26 19.2         99OJ4     250  S~06AK      
2007 07  06.01640  22 02 41.26   -13 26 20.2         99OJ4     250  S~06AK      
2007 07  07.40529  22 02 36.70   -13 26 48.7         99OJ4     250  S~06AK      
2007 07  07.41293  22 02 36.67   -13 26 48.8         99OJ4     250  S~06AK      
2007 07  07.47751  22 02 36.46   -13 26 50.2         99OJ4     250  S~06AK      
2007 07  12.86779  22 02 17.35   -13 28 47.5         99OJ4     250  S~06AK      
2007 07  12.87543  22 02 17.32   -13 28 47.7         99OJ4     250  S~06AK      
2007 07  12.88307  22 02 17.30   -13 28 47.8         99OJ4     250  S~06AK      
2007 07  12.89070  22 02 17.27   -13 28 48.0         99OJ4     250  S~06AK      
2007 08  01.91362  22 00 51.65   -13 37 13.1         99OJ4     250  S~06AK      
2007 08  01.92126  22 00 51.61   -13 37 13.2         99OJ4     250  S~06AK      
2007 08  01.92890  22 00 51.58   -13 37 13.5         99OJ4     250  S~06AK      
2007 08  01.93654  22 00 51.54   -13 37 13.7         99OJ4     250  S~06AL      
2007 08  24.36003  21 58 59.85   -13 47 41.0         99OJ4     250  S~06AL      
2007 08  24.36628  21 58 59.81   -13 47 41.2         99OJ4     250  S~06AL      
2007 08  24.37392  21 58 59.77   -13 47 41.4         99OJ4     250  S~06AL      
2007 08  24.42670  21 58 59.50   -13 47 42.9         99OJ4     250  S~06AL      
2007 08  24.43573  21 58 59.46   -13 47 43.2         99OJ4     250  S~06AL      
2007 09  12.24685  21 57 27.29   -13 56 03.2   22.0r 99OJ4     695  C~0V7v      
2007 09  12.30346  21 57 27.01   -13 56 04.6   22.3r 99OJ4     695  C~0V7v      
2008 09  30.03514  22 02 22.11   -13 36 17.7         99OJ4     807  C~06AL      
2008 09  30.10784  22 02 21.79   -13 36 18.5         99OJ4     807  C~06AL      
2008 09  30.20345  22 02 21.44   -13 36 20.8         99OJ4     807  C~06AL      
2008 10  01.16553  22 02 17.93   -13 36 38.8         99OJ4     807  C~06AL      

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    -0.47       0.00    -0.18
  2   0.0001     -1.96    -0.41      -0.02    -0.17
  3   0.0654  -1836.81     0.73     -28.56    -0.48
  4   0.0655  -1838.27     0.67     -28.43    -0.33
  5   0.0655  -1838.88     0.66     -28.45    -0.35
  6   1.0314   4742.05    -0.16    -402.15     0.17
  7   1.0317   4733.22    -0.13    -402.40     0.00
  8   1.0365   4596.29    -0.15    -404.28     0.32
  9   1.0367   4590.78    -0.28    -404.53     0.14
 10   1.0370   4584.00    -0.23    -404.48     0.26
 11   1.0425   4427.40    -0.17    -407.10    -0.03
 12   1.0425   4426.96    -0.11    -407.06     0.01
 13   1.0426   4423.94    -0.14    -407.05     0.04
 14   1.1048   2656.62     0.19    -428.80    -0.13
 15   1.1050   2651.57    -0.10    -428.58     0.13
 16   2.0206  10654.34    -0.32    -786.39    -0.11
 17   2.0207  10651.81    -0.26    -786.21     0.11
 18   2.0208  10649.09    -0.16    -786.16     0.18
 19   3.0654  15009.00     0.89   -1195.27     0.39
 20   3.0680  14933.24    -0.43   -1195.94     0.65
 21   3.0682  14925.57    -0.38   -1196.46     0.19
 22   5.0893  25657.34     0.06   -1991.26    -0.13
 23   5.0893  25655.13    -0.02   -1991.35    -0.21
 24   5.0894  25652.64     0.01   -1991.34    -0.19
 25   5.0921  25574.71     0.15   -1991.96    -0.11
 26   5.2395  22223.13    -0.05   -1990.78     0.06
 27   5.2397  22220.89    -0.18   -1990.55     0.22
 28   5.2399  22219.10     0.03   -1990.36     0.34
 29   6.0183  33435.84     0.45   -2360.54     0.06
 30   6.0183  33435.35     0.45   -2360.58     0.03
 31   6.0183  33434.76     0.35   -2360.47     0.15
 32   6.2139  28255.92     0.26   -2390.15    -0.38
 33   6.2140  28253.15     0.19   -2390.04    -0.32
 34   6.9205  41226.54    -0.22   -2685.58    -0.22
 35   6.9207  41223.95    -0.15   -2685.61    -0.06
 36   7.2619  33298.39     0.09   -2772.58     0.01
 37   7.2646  33273.22     0.22   -2771.72    -0.14
 38   7.9656  46355.31     0.48   -3130.60     0.39
 39   7.9656  46354.99     0.57   -3130.60     0.42
 40   7.9656  46354.63     0.62   -3130.68     0.35
 41   7.9658  46351.82     0.65   -3130.75     0.41
 42   7.9696  46275.88     0.64   -3134.10     0.28
 43   7.9696  46275.41     0.60   -3134.04     0.36
 44   7.9698  46271.88     0.66   -3134.28     0.27
 45   7.9845  45954.57    -0.56   -3146.34     0.10
 46   7.9845  45954.06    -0.60   -3146.37     0.08
 47   7.9846  45953.74    -0.45   -3146.37     0.11
 48   7.9846  45953.23    -0.48   -3146.40     0.09
 49   8.0394  44542.01    -0.28   -3182.16    -0.73
 50   8.0394  44541.40    -0.29   -3182.05    -0.61
 51   8.0395  44540.86    -0.24   -3182.18    -0.73
 52   8.0395  44540.22    -0.29   -3182.16    -0.70
 53   8.1009  42717.81    -0.50   -3201.85    -0.02
 54   8.1009  42717.17    -0.63   -3201.83     0.00
 55   8.1009  42716.53    -0.64   -3201.81     0.02
 56   8.1010  42712.14    -0.69   -3201.85     0.01
 57   8.1011  42711.46    -0.63   -3201.93    -0.07
 58   8.1526  41219.64     0.74   -3204.15    -0.24
 59   8.1527  41215.16     0.56   -3204.05    -0.18
 60   9.2033  45858.19     0.27   -3603.21    -0.32
 61   9.2035  45853.31    -0.16   -3602.29     0.50
 62   9.2038  45847.45    -0.18   -3602.66    -0.01
 63   9.2064  45790.53    -0.02   -3601.47     0.29

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.

99OJ4    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        38.126    38.131    38.121
ecceobj         0.028     0.028     0.028
incobj          3.998     3.998     3.998
qmin           36.588    36.586    36.578
qmax           39.681    39.721    39.728
amean          38.089    38.094    38.083
amin           37.812    37.807    37.788
amax           38.366    38.375    38.367
emean           0.018     0.018     0.018
emin            0.000     0.000     0.000
emax            0.035     0.036     0.036
imean           2.584     2.588     2.579
imin            0.943     0.942     0.946
imax            3.804     3.803     3.804
excite_mean     0.049     0.049     0.049
fracstop        1.000     1.000     1.000
cjmean          3.037     3.037     3.037

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       181.6     182.2     181.8
kozaiamp        179.9     180.0     180.0