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 Fri Dec  3 02:09:34 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     26 observations of     26
# Arc:  16.11y
# First observation: 2003/04/26
#  Last observation: 2019/06/06
# Chi-squared of fit:    55.89 DOF:     46 RMS:  0.26
# Min/Max residuals:    -0.56    0.68
# Exact a, adot, b, bdot, g, gdot:
  1.257817E-05  1.813211E-02  6.680855E-06  1.024608E-02  2.246217E-02  4.585339E-03
# Covariance matrix:
  1.3211E-13 -4.5316E-14  2.1548E-14 -2.0903E-14  2.3454E-14 -1.3391E-13
 -4.5316E-14  4.1281E-14 -2.2911E-14  2.2297E-14  2.2368E-14  1.4232E-13
  2.1548E-14 -2.2911E-14  1.0213E-13 -2.0457E-14 -1.5721E-14 -8.2812E-14
 -2.0903E-14  2.2297E-14 -2.0457E-14  1.4467E-14  1.5732E-14  8.0618E-14
  2.3454E-14  2.2368E-14 -1.5721E-14  1.5732E-14  2.9998E-13  9.7300E-14
 -1.3391E-13  1.4232E-13 -8.2812E-14  8.0618E-14  9.7300E-14  5.1439E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.621394 -163.961887   -0.342230   -0.010273   -0.947030  2452755.824823
# Heliocentric elements and errors
Epoch:              2452756.5000  =  2003/04/27
Mean Anomaly:           66.65414 +/-     0.014
Argument of Peri:      266.08869 +/-     0.018
Long of Asc Node:      197.53913 +/-     0.000
Inclination:            29.49657 +/-     0.000
Eccentricity:         0.22752463 +/-    0.0000
Semi-Major Axis:     47.44130953 +/-    0.0048
Time of Perihelion: 2430658.2396 +/-       5.6
Perihelion:          36.64724292 +/-    0.0041
Aphelion:            58.23537614 +/-    0.0061
Period (y)              326.7708 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -43.60165623 +/-    0.0010
Ecliptic Y          -12.88576607 +/-    0.0003
Ecliptic Z           -0.48250225 +/-    0.0000
Ecliptic XDOT         0.00005430 +/-    0.0000
Ecliptic YDOT        -0.00228712 +/-    0.0000
Ecliptic ZDOT         0.00124292 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.46830337 +/-    0.0010
Geocenter to KBO     44.51919435 +/-    0.0011
# Hcoef:  7.08

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      
2018 03  18.46707  14 07 15.160  -04 55 54.00  24.1r 03HX56    568              
2018 03  18.57216  14 07 14.840  -04 55 51.20  23.7r 03HX56    568              
2018 03  18.62133  14 07 14.680  -04 55 50.00  23.4r 03HX56    568              
2019 06  06.188550 14 06 35.400  -04 14 46.66  24.1G 03HX56    G37  C~36jC      
2019 06  06.274240 14 06 35.162  -04 14 45.65        03HX56    G37  C~36jC      

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     0.08       0.00     0.09
     2   0.0001      0.00    -0.13       0.00     0.10
     3   0.0002      0.00    -0.18       0.00     0.10
     4   0.0029      0.00    -0.45       0.00    -0.33
     5   0.0930      0.00     0.18       0.00    -0.07
     6   0.0931      0.00     0.16       0.00    -0.15
     7   0.0932      0.00     0.21       0.00    -0.10
     8   0.9014      0.00     0.06       0.00    -0.29
     9   0.9259      0.00    -0.39       0.00    -0.28
    10   0.9260      0.00    -0.15       0.00    -0.11
    11   0.9261      0.00     0.27       0.00     0.30
    12   1.0783      0.00     0.24       0.00    -0.07
    13   1.0785      0.00    -0.33       0.00     0.43
    14   1.0786      0.00     0.68       0.00     0.07
    15   2.2008      0.00    -0.56       0.00     0.56
    16   2.2688      0.00     0.20       0.00     0.14
    17   2.2715      0.00    -0.31       0.00     0.10
    18   2.2715      0.00     0.24       0.00     0.06
    19   5.0263      0.00     0.02       0.00    -0.44
    20   5.0265      0.00     0.06       0.00     0.22
    21   5.0268      0.00     0.02       0.00    -0.33
    22  14.8943      0.00    -0.24       0.00     0.37
    23  14.8946      0.00    -0.10       0.00     0.26
    24  14.8947      0.00    -0.19       0.00     0.10
    25  16.1119      0.00    -0.06       0.00     0.08
    26  16.1121      0.00     0.04       0.00    -0.02

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:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        47.008    47.008    47.008
ecceobj         0.225     0.225     0.225
incobj         29.622    29.622    29.622
qmin           36.122    36.120    36.123
qmax           58.911    58.883    58.969
amean          47.297    47.297    47.297
amin           46.875    46.868    46.881
amax           47.780    47.802    47.802
emean           0.215     0.215     0.215
emin            0.195     0.195     0.195
emax            0.234     0.233     0.234
imean          29.933    29.933    29.932
imin           29.454    29.455    29.457
imax           30.373    30.379    30.381
excite_mean     0.543     0.543     0.543
fracstop        1.000     1.000     1.000
cjmean          2.758     2.758     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     186.0     185.9
kozaiamp        180.0     179.9     180.0