Orbit Fit and Astrometric record for 03HX56

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: 03HX56    
# Created Tue Oct 24 01:37:22 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:   5.03y
# First observation: 2003/04/26
#  Last observation: 2008/05/05
Preliminary a, adot, b, bdot, g, gdot:
   0.000138   0.017737   0.000020   0.010005   0.022650   0.000000
# Chi-squared of fit:    49.10 DOF:   36 RMS:  0.27
# Min/Max residuals:    -0.72    0.61
# Exact a, adot, b, bdot, g, gdot:
  1.254011E-05  1.813203E-02  6.774656E-06  1.024598E-02  2.246214E-02  4.584429E-03
# Covariance matrix:
  1.7362E-13 -1.2315E-13  2.4704E-14 -5.0103E-14  1.1661E-15 -1.0059E-12
 -1.2315E-13  2.1942E-13 -5.5168E-14  1.1219E-13  1.3409E-13  2.2481E-12
  2.4704E-14 -5.5168E-14  1.4524E-13 -7.1585E-14 -3.3115E-14 -6.4650E-13
 -5.0103E-14  1.1219E-13 -7.1585E-14  9.2427E-14  6.8378E-14  1.3142E-12
  1.1661E-15  1.3409E-13 -3.3115E-14  6.8378E-14  5.4960E-13  1.3559E-12
 -1.0059E-12  2.2481E-12 -6.4650E-13  1.3142E-12  1.3559E-12  2.6342E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.621394 -163.961887   -0.342230   -0.010273   -0.947029  2452755.824823
# Heliocentric elements and errors
Epoch:              2452750.5000  =  2003/04/21
Mean Anomaly:           66.64317 +/-     0.029
Argument of Peri:      266.08634 +/-     0.024
Long of Asc Node:      197.53912 +/-     0.000
Inclination:            29.49642 +/-     0.000
Eccentricity:         0.22748136 +/-    0.0002
Semi-Major Axis:     47.44004037 +/-    0.0082
Time of Perihelion: 2430656.7636 +/-       7.8
Perihelion:          36.64831535 +/-    0.0131
Aphelion:            58.23176539 +/-    0.0152
Period (y)              326.7577 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -43.60171907 +/-    0.0014
Ecliptic Y          -12.88578237 +/-    0.0004
Ecliptic Z           -0.48249877 +/-    0.0000
Ecliptic XDOT         0.00005441 +/-    0.0000
Ecliptic YDOT        -0.00228708 +/-    0.0000
Ecliptic ZDOT         0.00124291 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.46851766 +/-    0.0014
Geocenter to KBO     44.51936444 +/-    0.0015
# Hcoef:  7.10

The following table shows the complete astrometric record for 03HX56. 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 (03HX56) followed by the observatory code and reference code for the source of the astrometry.

2003 04  26.32408  12 58 08.22   -06 52 58.4   23.1R 03HX56    568  Cq9882      
2003 04  26.36628  12 58 08.04   -06 52 57.1   23.1R 03HX56    568  Cq9882      
2003 04  26.40867  12 58 07.87   -06 52 55.8   23.2R 03HX56    568  Cq9882      
2003 04  27.37556  12 58 04.14   -06 52 26.8   23.4R 03HX56    568  Cq9882      
2003 05  30.28314  12 56 22.53   -06 38 11.7   23.8R 03HX56    568  Cq9882      
2003 05  30.33633  12 56 22.41   -06 38 10.7   23.8R 03HX56    568  Cq9882      
2003 05  30.38312  12 56 22.31   -06 38 09.7   23.1R 03HX56    568  Cq9882      
2004 03  20.56947  13 05 19.98   -07 03 12.9         03HX56    568  Cq9882      
2004 03  29.52117  13 04 44.00   -06 58 36.4         03HX56    568  Cq9882      
2004 03  29.54418  13 04 43.92   -06 58 35.5         03HX56    568  Cq9882      
2004 03  29.57266  13 04 43.83   -06 58 34.2         03HX56    568  Cq9882      
2004 05  24.18365  13 01 19.10   -06 31 45.6         03HX56    695  Cq9882      
2004 05  24.23346  13 01 18.93   -06 31 44.0         03HX56    695  Cq9882      
2004 05  24.28582  13 01 18.86   -06 31 43.2         03HX56    695  Cq9882      
2005 07  08.17266  13 05 12.14   -06 14 26.1         03HX56    568  Cq9882      
2005 08  01.99056  13 05 51.65   -06 16 23.7         03HX56    309  Cq9882      
2005 08  02.98817  13 05 54.17   -06 16 34.4         03HX56    309  Cq9882      
2005 08  02.99335  13 05 54.22   -06 16 34.5         03HX56    309  Cq9882      
2008 05  05.18310  13 20 51.73   -06 05 07.9         03HX56    695  Cz0402      
2008 05  05.25555  13 20 51.46   -06 05 05.3         03HX56    695  Cz0402      
2008 05  05.35060  13 20 51.10   -06 05 03.3         03HX56    695  Cz0402      

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     0.09
  2   0.0001     -2.97    -0.15       0.17     0.02
  3   0.0002     -5.81    -0.20       0.39     0.01
  4   0.0029    -68.24    -0.28       5.77    -0.50
  5   0.0930  -1794.51     0.19     211.29    -0.01
  6   0.0931  -1796.55     0.21     211.52    -0.10
  7   0.0932  -1798.31     0.24     211.87    -0.03
  8   0.9014   6175.09     0.18    1897.24    -0.25
  9   0.9259   5573.93    -0.24    1948.29    -0.41
 10   0.9260   5572.49    -0.09    1948.67    -0.16
 11   0.9261   5570.75     0.15    1949.36     0.38
 12   1.0783   2136.23     0.26    2268.06     0.03
 13   1.0785   2133.27    -0.46    2268.57     0.27
 14   1.0786   2132.00     0.61    2268.91     0.33
 15   2.2008   4949.51    -0.72    4559.29     0.33
 16   2.2688   5539.48     0.14    4675.69     0.23
 17   2.2715   5578.33    -0.32    4680.15    -0.01
 18   2.2715   5579.06     0.21    4680.35     0.16
 19   5.0263  17767.44     0.15   10407.61    -0.36
 20   5.0265  17762.70    -0.06   10408.50     0.26
 21   5.0268  17756.92     0.11   10408.33    -0.27

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.

03HX56    quality flag:2

Type:       SCATNEAR  SCATEXTD  SCATEXTD

axisobj        47.008    47.032    46.984
ecceobj         0.225     0.226     0.225
incobj         29.621    29.622    29.621
qmin           36.124    36.130    36.169
qmax           58.898    59.017    58.863
amean          47.297    47.323    47.270
amin           46.879    46.900    46.856
amax           47.834    47.834    47.771
emean           0.215     0.215     0.215
emin            0.195     0.195     0.195
emax            0.234     0.235     0.233
imean          29.932    29.946    29.919
imin           29.452    29.452    29.450
imax           30.373    30.398    30.366
excite_mean     0.543     0.544     0.543
fracstop        1.000     1.000     1.000
cjmean          2.758     2.757     2.758

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       185.9     188.0     184.4
kozaiamp        180.0     180.0     180.0