Orbit Fit and Astrometric record for 99CU153

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: 99CU153   
# Created Wed Dec 13 02:36:59 2017
# Orbit generated from Bernstein formalism
# Fitting   27 observations of   27
# Arc:  14.08y
# First observation: 1999/02/12
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000740   0.023915  -0.000048   0.001114   0.024407   0.000000
# Chi-squared of fit:   116.25 DOF:   48 RMS:  0.37
# Min/Max residuals:    -1.01    0.82
# Exact a, adot, b, bdot, g, gdot:
  1.529300E-05  2.369518E-02  3.242514E-06  1.102010E-03  2.412349E-02  1.094666E-03
# Covariance matrix:
  3.3261E-13 -6.8993E-14  3.4558E-15 -2.5000E-15  3.0202E-13 -1.7407E-13
 -6.8993E-14  2.9120E-14 -1.9342E-15  1.2458E-15 -3.0899E-14  8.4599E-14
  3.4558E-15 -1.9342E-15  1.1828E-13 -1.3448E-14  7.2350E-16 -6.2486E-15
 -2.5000E-15  1.2458E-15 -1.3448E-14  2.8612E-15 -1.1361E-15  4.0110E-15
  3.0202E-13 -3.0899E-14  7.2350E-16 -1.1361E-15  6.1470E-13 -8.7660E-14
 -1.7407E-13  8.4599E-14 -6.2486E-15  4.0110E-15 -8.7660E-14  2.7217E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.428142  130.057835   -0.229476   -0.007444   -0.966855  2451221.787503
# Heliocentric elements and errors
Epoch:              2451220.5000  =  1999/02/11
Mean Anomaly:           51.99093 +/-     0.063
Argument of Peri:      292.80848 +/-     0.072
Long of Asc Node:      139.25332 +/-     0.000
Inclination:             2.70352 +/-     0.000
Eccentricity:         0.06628347 +/-    0.0001
Semi-Major Axis:     44.08705969 +/-    0.0062
Time of Perihelion: 2435778.9732 +/-      18.3
Perihelion:          41.16481622 +/-    0.0065
Aphelion:            47.00930316 +/-    0.0073
Period (y)              292.7352 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.46709336 +/-    0.0009
Ecliptic Y           32.31936583 +/-    0.0010
Ecliptic Z           -0.30962521 +/-    0.0000
Ecliptic XDOT        -0.00214059 +/-    0.0000
Ecliptic YDOT        -0.00162588 +/-    0.0000
Ecliptic ZDOT         0.00012414 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.41554542 +/-    0.0010
Geocenter to KBO     41.45336588 +/-    0.0013
# Hcoef:  7.38

The following table shows the complete astrometric record for 99CU153. 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 (99CU153) followed by the observatory code and reference code for the source of the astrometry.

1999 02  12.28676  08 49 31.92   +17 18 47.0   23.2R 99CU153   568  Ca4208      
1999 02  12.37885  08 49 31.48   +17 18 48.8   23.2R 99CU153   568  Ca4208      
1999 03  15.25440  08 47 23.69   +17 27 44.6   23.2R 99CU153   568  Ca4208      
1999 03  15.33323  08 47 23.41   +17 27 45.7   23.2R 99CU153   568  Ca4208      
2000 03  29.16102  08 52 13.60   +17 12 38.6         99CU153   695  Cd7462      
2000 03  29.27899  08 52 13.36   +17 12 40.0         99CU153   695  Cd7462      
2000 03  30.16573  08 52 11.45   +17 12 48.5         99CU153   695  Cd7462      
2000 03  30.25084  08 52 11.28   +17 12 49.0         99CU153   695  Cd7462      
2000 04  06.36356  08 51 58.56   +17 13 47.3   23.3R 99CU153   568  Cb1943      
2000 04  07.31373  08 51 57.21   +17 13 54.2   23.3R 99CU153   568  Cb1943      
2001 02  25.27920  08 59 32.03   +16 45 55.4   22.8R 99CU153   568  Cd0744      
2001 02  25.34921  08 59 31.74   +16 45 57.2         99CU153   568  Cd0744      
2001 03  24.19501  08 57 54.53   +16 53 08.2   22.8R 99CU153   695  Cc7487      
2001 03  24.29064  08 57 54.26   +16 53 09.5         99CU153   695  Cc7487      
2005 02  10.31392  09 22 26.15   +15 19 57.5   23.5g 99CU153   568  C~0VDK      
2005 02  10.39693  09 22 25.74   +15 19 59.2   24.2g 99CU153   568  C~0VDK      
2005 02  10.43646  09 22 25.55   +15 20 00.1   23.8g 99CU153   568  C~0VDK      
2005 04  12.26433  09 18 48.38   +15 37 27.7   23.0i 99CU153   568  C~0VDK      
2005 04  12.34493  09 18 48.25   +15 37 28.3   23.2i 99CU153   568  C~0VDK      
2005 04  12.37258  09 18 48.21   +15 37 28.6   23.3i 99CU153   568  C~0VDK      
2007 02  14.48383  09 32 48.72   +14 38 22.6   23.5r 99CU153   568  C74769      
2007 02  14.51775  09 32 48.54   +14 38 23.0   23.4r 99CU153   568  C74769      
2007 02  14.55049  09 32 48.39   +14 38 24.0   23.6r 99CU153   568  C74769      
2007 02  15.49488  09 32 43.94   +14 38 45.3   23.3r 99CU153   568  C74769      
2013 03  13.24800  10 01 58.13   +12 32 10.7   23.2R 99CU153   695  C~0uco      
2013 03  14.20531  10 01 54.19   +12 32 32.2         99CU153   695  C~0uco      
2013 03  14.35578  10 01 53.57   +12 32 35.6         99CU153   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     0.05       0.00    -0.52
  2   0.0003     -6.55     0.17       0.04    -0.53
  3   0.0848  -1912.51    -0.30      28.38    -0.47
  4   0.0850  -1916.66    -0.55      28.38    -0.53
  5   1.1249   2329.57     0.01     270.18     0.49
  6   1.1252   2325.88     0.29     270.59     0.82
  7   1.1277   2297.23     0.02     271.34     0.59
  8   1.1279   2294.75     0.30     271.16     0.36
  9   1.1474   2103.50    -0.18     277.83    -0.64
 10   1.1500   2083.01    -0.34     279.23    -0.29
 11   2.0369   8822.49     0.43     465.36     0.03
 12   2.0371   8817.98     0.61     465.92     0.54
 13   2.1106   7355.16    -0.02     489.65     0.30
 14   2.1109   7351.08    -0.12     489.82     0.41
 15   5.9960  29463.86    -0.09    1365.17     0.63
 16   5.9962  29457.56    -0.12    1364.96     0.39
 17   5.9963  29454.61    -0.09    1364.97     0.39
 18   6.1628  26085.19     0.05    1404.45    -0.38
 19   6.1631  26083.18     0.05    1404.45    -0.39
 20   6.1631  26082.53     0.08    1404.56    -0.29
 21   8.0060  39072.68    -0.12    1826.21     0.19
 22   8.0061  39069.98    -0.24    1825.75    -0.27
 23   8.0062  39067.51    -0.21    1826.01    -0.02
 24   8.0088  38997.07     0.19    1825.61    -1.01
 25  14.0807  67450.50     0.15    3255.14     0.13
 26  14.0833  67382.35    -0.04    3255.19     0.00
 27  14.0837  67371.62     0.02    3255.21     0.07

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.

99CU153    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.225    44.243    44.206
ecceobj         0.068     0.068     0.068
incobj          2.702     2.702     2.702
qmin           40.166    40.187    40.178
qmax           48.589    48.597    48.525
amean          44.245    44.264    44.226
amin           43.890    43.919    43.880
amax           44.617    44.645    44.593
emean           0.073     0.073     0.073
emin            0.057     0.058     0.057
emax            0.089     0.089     0.089
imean           2.160     2.155     2.166
imin            1.510     1.511     1.511
imax            2.810     2.799     2.817
excite_mean     0.082     0.082     0.082
fracstop        1.000     1.000     1.000
cjmean          3.096     3.097     3.096

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       191.0     190.3     191.3
kozaiamp        180.0     180.0     179.9