Orbit Fit and Astrometric record for 01QC298

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: 01QC298   
# Created Mon Oct 23 01:37:14 2017
# Orbit generated from Bernstein formalism
# Fitting   37 observations of   38
# Arc:  12.23y
# First observation: 2000/07/29
#  Last observation: 2012/10/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.001482   0.023191  -0.000855   0.013751   0.024633   0.000000
# Chi-squared of fit:   133.33 DOF:   68 RMS:  0.34
# Min/Max residuals:    -1.23    0.84
# Exact a, adot, b, bdot, g, gdot:
  1.354313E-05  2.270552E-02  7.912313E-06  1.340493E-02  2.520067E-02  1.741478E-04
# Covariance matrix:
  1.8003E-13 -4.5515E-14  4.2411E-14 -2.6097E-14  5.2170E-14 -1.4384E-13
 -4.5515E-14  2.6317E-14 -2.5552E-14  1.5853E-14  1.0705E-14  8.6597E-14
  4.2411E-14 -2.5552E-14  1.2548E-13 -2.7186E-14  1.0719E-15 -9.3461E-14
 -2.6097E-14  1.5853E-14 -2.7186E-14  1.2297E-14 -1.9848E-16  5.7852E-14
  5.2170E-14  1.0705E-14  1.0719E-15 -1.9848E-16  1.5123E-13 -3.8699E-15
 -1.4384E-13  8.6597E-14 -9.3461E-14  5.7852E-14 -3.8699E-15  3.1681E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.599501  -23.534455    0.513532    0.008998   -0.875768  2451754.813763
# Heliocentric elements and errors
Epoch:              2451750.5000  =  2000/07/25
Mean Anomaly:          357.11515 +/-     0.009
Argument of Peri:        4.88907 +/-     0.011
Long of Asc Node:      334.75520 +/-     0.000
Inclination:            30.55091 +/-     0.000
Eccentricity:         0.12674188 +/-    0.0001
Semi-Major Axis:     46.44033095 +/-    0.0035
Time of Perihelion: 2452676.8210 +/-       2.8
Perihelion:          40.55439625 +/-    0.0039
Aphelion:            52.32626565 +/-    0.0046
Period (y)              316.4836 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.98273126 +/-    0.0006
Ecliptic Y          -16.65982984 +/-    0.0002
Ecliptic Z            0.41548934 +/-    0.0000
Ecliptic XDOT         0.00098124 +/-    0.0000
Ecliptic YDOT         0.00226571 +/-    0.0000
Ecliptic ZDOT         0.00145661 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.56408477 +/-    0.0005
Geocenter to KBO     39.68148142 +/-    0.0006
# Hcoef:  6.26

The following table shows the complete astrometric record for 01QC298. 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 (01QC298) followed by the observatory code and reference code for the source of the astrometry.

2000 07  29.31302  22 31 58.79   -08 34 55.1   22.0R 01QC298   807  Ch1433      
2000 07  29.42109  22 31 58.31   -08 34 57.1         01QC298   807  Ch1433      
2000 09  19.18728  22 27 52.52   -08 51 51.9   22.0R 01QC298   695  Cf9826      
2000 09  19.28280  22 27 52.09   -08 51 53.7         01QC298   695  Cf9826      
2001 08  21.17631  22 33 59.60   -07 30 05.0   21.0R 01QC298   807  Cd7926      
2001 08  21.25156  22 33 59.23   -07 30 06.4         01QC298   807  Cd7926      
2001 09  12.26600  22 32 11.43   -07 37 47.0   21.8R 01QC298   695  Cd7926      
2001 09  12.31021  22 32 11.21   -07 37 47.7         01QC298   695  Cd7926      
2001 10  20.19015  22 29 40.66   -07 48 16.3   22.3R 01QC298   695  Ce0366      
2001 10  20.23392  22 29 40.54   -07 48 16.9         01QC298   695  Ce0366      
2002 07  11.23642  22 40 30.85   -06 08 07.7   21.8R 01QC298   304  Cf9826      
2002 07  11.33678  22 40 30.55   -06 08 08.5         01QC298   304  Cf9826      
2002 08  12.29280  22 38 26.43   -06 15 11.8   20.8R 01QC298   807  Cg3218      
2002 08  12.37104  22 38 26.06   -06 15 13.4         01QC298   807  Cg3218      
2003 09  03.04198  22 40 24.86   -05 10 28.6   22.1R 01QC298   304  Ci4512      
2003 09  03.08850  22 40 24.61   -05 10 29.5         01QC298   304  Ci4512      
2003 10  23.03104  22 36 57.10   -05 26 20.0         01QC298   304  Ci9379      
2003 10  23.16306  22 36 56.71   -05 26 21.1         01QC298   304  Ci9379      
2005 06  07.40326  22 52 11.17   -02 37 31.4   22.0R 01QC298   304  Cn6481      
2005 06  07.41249  22 52 11.17   -02 37 31.2         01QC298   304  Cn6481      
2005 07  09.27649  22 51 31.97   -02 33 48.9   22.7R 01QC298   304  Cn8840      
2005 07  09.28162  22 51 31.95   -02 33 48.9         01QC298   304  Cn8840      
2007 10  13.26926  22 52 06.85   -00 37 23.8   22.8V 01QC298   705  Cz2891      
2007 10  13.27009  22 52 06.85   -00 37 23.6   23.9  01QC298   705  Cz2891      
2007 11  04.18251  22 51 02.53   -00 43 51.6   22.6V 01QC298   705  Cz2891      
2007 11  04.18500  22 51 02.52   -00 43 51.5   23.3  01QC298   705  Cz2891      
2012 10  16.01010  23 10 12.46   +05 19 20.2   22.6R 01QC298   304  C~0p4t      
2012 10  16.13909  23 10 11.97   +05 19 16.7         01QC298   304  C~0p4t      
2012 10  16.24895  23 10 11.56   +05 19 14.0         01QC298   304  C~0p4t      
2012 10  17.01292  23 10 08.72   +05 18 54.5         01QC298   304  C~0p4t      
2012 10  17.13674  23 10 08.25   +05 18 51.3         01QC298   304  C~0p4t      
2012 10  17.19866  23 10 08.01   +05 18 49.7         01QC298   304  C~0p4t      
2012 10  17.99660  23 10 05.08   +05 18 30.0         01QC298   304  C~0p4t      
2012 10  18.06425  23 10 04.84   +05 18 28.0         01QC298   304  C~0p4t      
2012 10  18.19316  23 10 04.42   +05 18 25.2         01QC298   304  C~0p4t      
2012 10  20.01559  23 09 57.84   +05 17 39.3         01QC298   304  C~0p4t      
2012 10  20.08084  23 09 57.60   +05 17 37.7         01QC298   304  C~0p4t      
2012 10  20.21421  23 09 57.13   +05 17 34.5         01QC298   304  C~0p4t      

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     0.10
  2   0.0003     -7.36    -0.22       0.77    -0.05
  3   0.1420  -3769.88    -0.00     396.51    -0.01
  4   0.1423  -3776.47     0.18     397.17    -0.08
  5   1.0619   3104.85    -0.10    2952.55    -0.09
  6   1.0621   3099.22    -0.01    2953.29     0.01
  7   1.1224   1439.16     0.12    3117.39    -0.15
  8   1.1225   1435.86     0.13    3117.94     0.07
  9   1.2262   -876.48     0.46    3357.54     0.04
 10   1.2263   -878.36     0.50    3357.63    -0.13
 11   1.9491  10352.89    -0.02    5356.82     0.53
 12   1.9494  10348.43    -0.05    5357.75     0.42
 13   2.0369   8468.70    -0.06    5654.22    -0.02
 14   2.0371   8462.97    -0.15    5654.79    -0.16
 15   3.0958  11567.51    -1.00    8608.98    -0.71
 16   3.0959  11563.70    -1.23    8609.54    -0.51
 17   3.2326   8323.07    -0.09    8878.05    -0.51
 18   3.2330   8317.24    -0.08    8879.19     0.08
 19   4.8572  24944.97    -0.14   13215.58     0.33
 20   4.8572  24945.05    -0.13   13215.77     0.39
 21   4.9445  24478.75     0.84   13646.01     0.70
 22   4.9445  24478.46     0.76   13646.12     0.75
 23   7.2059  27682.37    -0.01   20030.48    -0.20
 24   7.2059  27682.44     0.11   20030.67    -0.01
 25   7.2659  26619.74     0.14   20026.39    -0.53
 26   7.2659  26619.64     0.13   20026.54    -0.38
 27  12.2155  52054.60    -0.15   34585.72     0.36
 28  12.2158  52045.87    -0.14   34585.00     0.09
 29  12.2161  52038.66     0.06   34584.62     0.12
 30  12.2182  51988.37     0.00   34581.23    -0.05
 31  12.2185  51980.06    -0.03   34580.69    -0.12
 32  12.2187  51975.84    -0.14   34580.45    -0.12
 33  12.2209  51924.14    -0.08   34577.36     0.29
 34  12.2211  51919.74    -0.02   34576.72    -0.08
 35  12.2214  51912.34 (   1.06)  34576.30 (   0.01)
 36  12.2264  51795.58     0.07   34567.73    -0.16
 37  12.2266  51791.35     0.01   34567.49    -0.12
 38  12.2270  51783.04     0.20   34566.95    -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.

01QC298    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.522    46.533    46.512
ecceobj         0.128     0.128     0.128
incobj         30.526    30.526    30.526
qmin           39.622    39.623    39.618
qmax           53.351    53.356    53.318
amean          46.317    46.325    46.307
amin           45.937    45.937    45.937
amax           46.742    46.740    46.711
emean           0.128     0.129     0.128
emin            0.116     0.115     0.115
emax            0.142     0.142     0.142
imean          31.540    31.539    31.541
imin           31.280    31.271    31.277
imax           31.823    31.816    31.816
excite_mean     0.539     0.539     0.539
fracstop        1.000     1.000     1.000
cjmean          2.747     2.747     2.747

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       166.3     166.5     166.2
kozaiamp        179.9     180.0     179.9