Orbit Fit and Astrometric record for 04HE79

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: 04HE79    
# Created Fri Oct 20 01:37:32 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   19
# Arc:  10.97y
# First observation: 2004/04/24
#  Last observation: 2015/04/15
Preliminary a, adot, b, bdot, g, gdot:
  -0.000230   0.027329   0.000048  -0.001413   0.027361   0.000000
# Chi-squared of fit:    23.27 DOF:   32 RMS:  0.20
# Min/Max residuals:    -0.56    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.641575E-05  2.669369E-02 -1.092733E-06 -1.380118E-03  2.565074E-02  1.486582E-04
# Covariance matrix:
  2.3808E-13 -1.0853E-13 -4.5560E-15  4.6098E-15  4.0616E-14 -2.8422E-13
 -1.0853E-13  2.3217E-13  1.2613E-14 -1.2245E-14  4.1732E-13  7.5350E-13
 -4.5560E-15  1.2613E-14  1.2631E-13 -1.7080E-14  2.4817E-14  4.2092E-14
  4.6098E-15 -1.2245E-14 -1.7080E-14  6.1491E-15 -2.3572E-14 -4.0812E-14
  4.0616E-14  4.1732E-13  2.4817E-14 -2.3572E-14  1.3572E-12  1.4489E-12
 -2.8422E-13  7.5350E-13  4.2092E-14 -4.0812E-14  1.4489E-12  2.5111E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.921901 -133.802127    0.199502    0.015883   -0.983833  2453119.924843
# Heliocentric elements and errors
Epoch:              2453110.5000  =  2004/04/15
Mean Anomaly:            1.47434 +/-     0.031
Argument of Peri:      161.19493 +/-     0.038
Long of Asc Node:       62.83298 +/-     0.001
Inclination:             3.08562 +/-     0.000
Eccentricity:         0.10158246 +/-    0.0001
Semi-Major Axis:     44.48801130 +/-    0.0079
Time of Perihelion: 2452666.6274 +/-       9.2
Perihelion:          39.96880968 +/-    0.0089
Aphelion:            49.00721291 +/-    0.0103
Period (y)              296.7377 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.80934773 +/-    0.0012
Ecliptic Y          -28.70378066 +/-    0.0013
Ecliptic Z            0.62723570 +/-    0.0000
Ecliptic XDOT         0.00204071 +/-    0.0000
Ecliptic YDOT        -0.00199220 +/-    0.0000
Ecliptic ZDOT        -0.00014690 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.97074267 +/-    0.0013
Geocenter to KBO     38.98522914 +/-    0.0018
# Hcoef:  7.53

The following table shows the complete astrometric record for 04HE79. 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 (04HE79) followed by the observatory code and reference code for the source of the astrometry.

2004 04  24.42410  14 56 01.63   -15 48 02.2         04HE79    568  C~0VDp      
2004 04  24.45029  14 56 01.49   -15 48 01.4         04HE79    568  C~0VDp      
2004 04  25.42986  14 55 56.72   -15 47 41.4   23.7g 04HE79    568  C~0VDp      
2004 04  25.45256  14 55 56.61   -15 47 40.9   23.1g 04HE79    568  C~0VDp      
2004 04  25.47950  14 55 56.50   -15 47 40.4   23.4g 04HE79    568  C~0VDp      
2005 05  08.41692  15 00 54.69   -16 13 56.8         04HE79    568  C~0VDp      
2005 05  08.44886  15 00 54.51   -16 13 56.0         04HE79    568  C~0VDp      
2005 05  08.48061  15 00 54.36   -16 13 55.3         04HE79    568  C~0VDp      
2005 05  10.47358  15 00 44.35   -16 13 15.1         04HE79    568  C~0VDp      
2006 06  30.30384  15 03 11.89   -16 29 37.3   23.6r 04HE79    568  C~0VDp      
2006 06  30.31228  15 03 11.83   -16 29 38.1   24.1r 04HE79    568  C~0VDp      
2006 07  01.29940  15 03 09.10   -16 29 28.1   23.2r 04HE79    568  C~0VDp      
2006 07  01.31252  15 03 09.06   -16 29 28.2   23.1r 04HE79    568  C~0VDp      
2007 05  16.31166  15 12 25.70   -17 10 59.5         04HE79    675  C~0VDp      
2007 05  16.35636  15 12 25.47   -17 10 58.7         04HE79    675  C~0VDp      
2007 05  16.39674  15 12 25.27   -17 10 58.1         04HE79    675  C~0VDp      
2015 04  15.38954  16 04 21.10   -20 44 59.4   23.5R 04HE79    695  C~1RHU      
2015 04  15.42706  16 04 20.97   -20 44 58.8         04HE79    695  C~1RHU      
2015 04  15.46480  16 04 20.82   -20 44 58.4         04HE79    695  C~1RHU      

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     0.01       0.00     0.05
  2   0.0001     -2.17    -0.21       0.19     0.26
  3   0.0028    -73.86    -0.02      -0.35     0.18
  4   0.0028    -75.52     0.02      -0.33     0.22
  5   0.0029    -77.19     0.37      -0.30     0.27
  6   1.0376   4493.28     0.06    -293.77    -0.18
  7   1.0377   4490.57    -0.22    -293.73    -0.10
  8   1.0378   4488.30    -0.06    -293.67     0.00
  9   1.0433   4338.57    -0.04    -295.54    -0.23
 10   2.1817   6653.58     0.08    -645.86     0.43
 11   2.1818   6652.97    -0.16    -646.87    -0.56
 12   2.1845   6612.43     0.05    -648.17    -0.20
 13   2.1845   6611.91     0.08    -648.43    -0.43
 14   3.0579  15004.05    -0.04    -870.85     0.12
 15   3.0580  15000.65    -0.03    -870.96     0.06
 16   3.0581  14997.71     0.11    -871.14    -0.08
 17  10.9732  62766.59    -0.13   -3198.24    -0.15
 18  10.9733  62764.50     0.08   -3197.99     0.14
 19  10.9734  62762.16     0.05   -3198.01     0.17

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.

04HE79    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.026    44.049    44.003
ecceobj         0.092     0.093     0.092
incobj          3.095     3.095     3.095
qmin           39.462    39.474    39.485
qmax           49.564    49.590    49.465
amean          44.374    44.397    44.351
amin           44.018    44.049    43.991
amax           44.765    44.785    44.736
emean           0.092     0.092     0.091
emin            0.075     0.076     0.075
emax            0.108     0.108     0.107
imean           1.699     1.700     1.697
imin            0.948     0.956     0.940
imax            2.286     2.285     2.290
excite_mean     0.097     0.097     0.096
fracstop        1.000     1.000     1.000
cjmean          3.095     3.095     3.094

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       191.8     191.8     191.9
kozaiamp        180.0     180.0     179.9