Orbit Fit and Astrometric record for 03HF57

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: 03HF57    
# Created Fri Dec 15 02:37:13 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   21
# Arc:  13.09y
# First observation: 2003/04/26
#  Last observation: 2016/05/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.002556   0.038805   0.000052  -0.000841   0.030307   0.000000
# Chi-squared of fit:    17.88 DOF:   34 RMS:  0.17
# Min/Max residuals:    -0.39    0.41
# Exact a, adot, b, bdot, g, gdot:
  1.907147E-05  3.809473E-02 -9.721523E-07 -8.239692E-04  3.184584E-02  2.593049E-03
# Covariance matrix:
  3.4759E-13 -9.5355E-14 -2.1335E-15  1.8530E-15  3.8906E-13 -1.7730E-13
 -9.5355E-14  4.7225E-14  1.4133E-15 -9.6541E-16 -4.7000E-14  8.9827E-14
 -2.1335E-15  1.4133E-15  1.4746E-13 -1.9370E-14  4.1787E-16  2.9090E-15
  1.8530E-15 -9.6541E-16 -1.9370E-14  5.0689E-15  1.6207E-15 -2.0836E-15
  3.8906E-13 -4.7000E-14  4.1787E-16  1.6207E-15  1.5187E-12 -1.7434E-13
 -1.7730E-13  8.9827E-14  2.9090E-15 -2.0836E-15 -1.7434E-13  1.9506E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.709058 -161.314696   -0.298649    0.011897   -0.961659  2452755.856463
# Heliocentric elements and errors
Epoch:              2452750.5000  =  2003/04/21
Mean Anomaly:           18.74208 +/-     0.012
Argument of Peri:      122.83532 +/-     0.015
Long of Asc Node:       48.18370 +/-     0.002
Inclination:             1.41978 +/-     0.000
Eccentricity:         0.19743366 +/-    0.0001
Semi-Major Axis:     39.53864547 +/-    0.0082
Time of Perihelion: 2448022.8374 +/-       2.5
Perihelion:          31.73238609 +/-    0.0083
Aphelion:            47.34490485 +/-    0.0111
Period (y)              248.6228 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.56121220 +/-    0.0012
Ecliptic Y          -10.64657975 +/-    0.0004
Ecliptic Z            0.38858522 +/-    0.0000
Ecliptic XDOT         0.00083108 +/-    0.0000
Ecliptic YDOT        -0.00317908 +/-    0.0000
Ecliptic ZDOT        -0.00006789 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.36492468 +/-    0.0011
Geocenter to KBO     31.40127414 +/-    0.0012
# Hcoef:  8.61

The following table shows the complete astrometric record for 03HF57. 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 (03HF57) followed by the observatory code and reference code for the source of the astrometry.

2003 04  26.35572  13 10 02.33   -06 39 55.7   23.0R 03HF57    568  Cq9883      
2003 04  26.40073  13 10 02.07   -06 39 54.4   23.2R 03HF57    568  Cq9883      
2003 04  26.44299  13 10 01.85   -06 39 52.9   22.9R 03HF57    568  Cq9883      
2003 05  30.30761  13 07 32.45   -06 25 21.9         03HF57    568  Cq9883      
2003 05  30.36094  13 07 32.29   -06 25 21.0         03HF57    568  Cq9883      
2005 05  04.33366  13 25 23.65   -08 18 38.9   23.7r 03HF57    568  Cq9883      
2005 05  04.36160  13 25 23.51   -08 18 38.1   24.4r 03HF57    568  Cq9883      
2005 05  04.40626  13 25 23.26   -08 18 36.7   23.6r 03HF57    568  Cq9883      
2005 05  05.37872  13 25 18.22   -08 18 07.8   23.9r 03HF57    568  Cq9883      
2005 07  09.20326  13 22 28.98   -08 02 56.2         03HF57    675  Cq9883      
2005 07  10.21396  13 22 29.73   -08 03 02.1         03HF57    675  Cq9883      
2005 07  11.18583  13 22 30.60   -08 03 09.0         03HF57    675  Cq9883      
2008 05  03.28630  13 49 29.50   -10 46 38.0         03HF57    695  Cz0402      
2008 05  03.29371  13 49 29.46   -10 46 37.9         03HF57    695  Cz0402      
2008 05  03.29800  13 49 29.45   -10 46 37.3         03HF57    695  Cz0402      
2008 05  03.33270  13 49 29.24   -10 46 36.4         03HF57    695  Cz0402      
2008 05  04.30958  13 49 23.85   -10 46 07.4         03HF57    695  Cz0402      
2008 05  05.20672  13 49 18.98   -10 45 40.8         03HF57    695  Cz0402      
2008 05  05.21279  13 49 18.95   -10 45 40.5         03HF57    695  Cz0402      
2016 05  29.21675  14 50 11.242  -16 16 23.10  23.2R 03HF57    G37              
2016 05  29.28667  14 50 10.874  -16 16 21.39        03HF57    G37              

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    -0.03       0.00     0.12
  2   0.0001     -4.08    -0.15      -0.27    -0.08
  3   0.0002     -7.68    -0.04      -0.12     0.12
  4   0.0930  -2398.16    -0.29     -40.38     0.14
  5   0.0931  -2400.71    -0.10     -40.45     0.18
  6   2.0232  14949.03     0.21    -345.77    -0.06
  7   2.0233  14946.79     0.35    -345.80    -0.04
  8   2.0234  14942.80     0.16    -345.88    -0.05
  9   2.0261  14862.20     0.41    -346.82    -0.07
 10   2.2036  12179.12     0.01    -435.82    -0.35
 11   2.2063  12191.70     0.08    -437.14    -0.10
 12   2.2090  12206.31 (   0.88)   -438.73 (  -0.18)
 13   5.0210  38511.69    -0.10    -852.26    -0.08
 14   5.0210  38511.08    -0.03    -852.37    -0.19
 15   5.0211  38510.72    -0.00    -851.86     0.33
 16   5.0212  38507.39    -0.17    -852.12     0.12
 17   5.0238  38419.90    -0.39    -853.19    -0.14
 18   5.0263  38340.72     0.01    -853.79    -0.03
 19   5.0263  38340.18     0.01    -853.67     0.11
 20  13.0920 101977.10     0.04   -2298.41    -0.05
 21  13.0922 101970.17     0.03   -2298.32     0.11

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.

03HF57    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.126    39.150    39.101
ecceobj         0.189     0.190     0.189
incobj          1.424     1.424     1.424
qmin           31.103    31.100    31.079
qmax           48.375    48.280    48.348
amean          39.456    39.456    39.456
amin           39.071    39.057    39.048
amax           39.937    39.897    39.924
emean           0.195     0.195     0.195
emin            0.179     0.180     0.180
emax            0.211     0.210     0.212
imean           1.538     1.548     1.522
imin            1.167     1.180     1.134
imax            1.954     1.965     1.954
excite_mean     0.197     0.197     0.197
fracstop        1.000     1.000     1.000
cjmean          3.007     3.007     3.007

libcent 0       180.2     180.4     180.1
libamp  0        57.8      52.5      65.6
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       159.0     159.1     159.7
kozaiamp        179.9     180.0     180.0