Orbit Fit and Astrometric record for 04HO79

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: 04HO79    
# Created Mon Dec 18 02:37:20 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   22
# Arc:   4.04y
# First observation: 2004/04/22
#  Last observation: 2008/05/07
Preliminary a, adot, b, bdot, g, gdot:
   0.000168   0.030356  -0.000026  -0.002987   0.026937   0.000000
# Chi-squared of fit:    12.78 DOF:   38 RMS:  0.13
# Min/Max residuals:    -0.37    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.770237E-05  3.125656E-02 -1.514996E-06 -3.080399E-03  2.754873E-02  8.969740E-03
# Covariance matrix:
  2.4835E-13 -1.1174E-13 -2.3426E-15  6.1436E-15  1.5355E-13 -5.0248E-13
 -1.1174E-13  3.8066E-13  1.4979E-14 -3.7097E-14  2.0563E-13  3.0205E-12
 -2.3426E-15  1.4979E-14  1.3890E-13 -4.7500E-14  9.7203E-15  1.2946E-13
  6.1436E-15 -3.7097E-14 -4.7500E-14  3.4267E-14 -2.3402E-14 -3.2040E-13
  1.5355E-13  2.0563E-13  9.7203E-15 -2.3402E-14  4.9869E-13  1.9009E-12
 -5.0248E-13  3.0205E-12  1.2946E-13 -3.2040E-13  1.9009E-12  2.6086E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.414947 -130.021009    0.294382    0.006990   -0.959184  2453118.060453
# Heliocentric elements and errors
Epoch:              2453110.5000  =  2004/04/15
Mean Anomaly:           22.98780 +/-     0.008
Argument of Peri:      120.05993 +/-     0.017
Long of Asc Node:       53.63292 +/-     0.000
Inclination:             5.61872 +/-     0.000
Eccentricity:         0.41644388 +/-    0.0002
Semi-Major Axis:     55.62784689 +/-    0.0119
Time of Perihelion: 2443433.7000 +/-       1.5
Perihelion:          32.46197043 +/-    0.0118
Aphelion:            78.79372336 +/-    0.0194
Period (y)              414.9030 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.18795318 +/-    0.0006
Ecliptic Y          -28.34118889 +/-    0.0007
Ecliptic Z            0.26286265 +/-    0.0000
Ecliptic XDOT         0.00180116 +/-    0.0000
Ecliptic YDOT        -0.00268886 +/-    0.0000
Ecliptic ZDOT        -0.00029954 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.26055775 +/-    0.0007
Geocenter to KBO     36.29931458 +/-    0.0009
# Hcoef:  7.57

The following table shows the complete astrometric record for 04HO79. 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 (04HO79) followed by the observatory code and reference code for the source of the astrometry.

2004 04  22.55971  15 10 36.11   -17 20 08.3   23.2g 04HO79    568  C~0X5W      
2004 04  24.43403  15 10 26.59   -17 19 33.1   23.0g 04HO79    568  C~0X5W      
2004 04  25.43977  15 10 21.43   -17 19 14.1   23.3g 04HO79    568  C~0X5W      
2004 04  25.46678  15 10 21.28   -17 19 13.5   23.2g 04HO79    568  C~0X5W      
2004 04  25.48942  15 10 21.17   -17 19 13.3   22.9g 04HO79    568  C~0X5W      
2004 07  08.27453  15 04 51.67   -16 59 29.0   22.8i 04HO79    568  C~0X5W      
2004 07  08.33745  15 04 51.54   -16 59 28.6   23.1i 04HO79    568  C~0X5W      
2004 07  08.39876  15 04 51.36   -16 59 28.5   22.7i 04HO79    568  C~0X5W      
2005 05  08.43197  15 16 15.09   -17 53 36.2   22.9r 04HO79    568  C~0X5W      
2005 05  08.46374  15 16 14.92   -17 53 35.5   23.3r 04HO79    568  C~0X5W      
2005 05  08.49567  15 16 14.74   -17 53 35.0   22.8r 04HO79    568  C~0X5W      
2005 05  10.48849  15 16 04.10   -17 52 57.6   22.7r 04HO79    568  C~0X5W      
2005 08  02.11456  15 11 17.64   -17 37 01.2         04HO79    309  C~0X5W      
2005 08  03.10494  15 11 17.72   -17 37 03.6         04HO79    309  C~0X5W      
2006 06  03.39653  15 20 57.48   -18 22 56.0         04HO79    568  C~0X5W      
2006 06  03.41228  15 20 57.41   -18 22 55.7         04HO79    568  C~0X5W      
2006 06  03.42871  15 20 57.32   -18 22 55.4         04HO79    568  C~0X5W      
2008 05  03.36607  15 37 16.64   -19 40 50.8         04HO79    695  C~0X5W      
2008 05  04.35249  15 37 11.57   -19 40 35.3         04HO79    695  C~0X5W      
2008 05  07.48261  15 36 55.30   -19 39 46.1   23.0r 04HO79    568  C~0X5W      
2008 05  07.50574  15 36 55.17   -19 39 45.5   23.0r 04HO79    568  C~0X5W      
2008 05  07.52893  15 36 55.05   -19 39 45.4   23.1r 04HO79    568  C~0X5W      

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    -0.05
  2   0.0051   -140.76     0.07      -2.63     0.14
  3   0.0079   -217.04     0.10      -4.15     0.19
  4   0.0080   -219.27    -0.04      -4.14     0.24
  5   0.0080   -220.84     0.14      -4.37     0.06
  6   0.2100  -5088.57    -0.07    -147.76     0.08
  7   0.2102  -5090.47     0.18    -147.89     0.11
  8   0.2104  -5092.98    -0.25    -148.51    -0.37
  9   1.0428   5205.81    -0.10    -655.26     0.02
 10   1.0429   5203.28    -0.09    -655.21     0.13
 11   1.0429   5200.67    -0.16    -655.40     0.00
 12   1.0484   5044.19    -0.10    -658.92    -0.14
 13   1.2774    843.53     0.07    -817.02    -0.25
 14   1.2801    845.27     0.05    -819.03    -0.31
 15   2.1132   9554.53     0.01   -1319.12    -0.08
 16   2.1132   9553.49     0.13   -1319.08    -0.01
 17   2.1133   9552.17     0.02   -1319.12    -0.02
 18   4.0296  24264.12    -0.15   -2481.94     0.01
 19   4.0323  24189.86    -0.02   -2483.45     0.17
 20   4.0409  23951.69     0.12   -2488.89    -0.03
 21   4.0409  23949.74    -0.03   -2488.73     0.17
 22   4.0410  23948.05     0.08   -2489.03    -0.08

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.

04HO79    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE

axisobj        54.714    54.748    54.679
ecceobj         0.407     0.408     0.407
incobj          5.637     5.637     5.637
qmin           31.885    31.888    31.909
qmax           80.534    80.311    80.515
amean          55.462    55.462    55.462
amin           54.714    54.742    54.664
amax           56.481    56.353    56.494
emean           0.414     0.414     0.414
emin            0.403     0.403     0.403
emax            0.426     0.425     0.426
imean           4.828     4.834     4.792
imin            4.598     4.630     4.557
imax            5.102     5.032     5.094
excite_mean     0.422     0.422     0.422
fracstop        1.000     1.000     1.000
cjmean          3.005     3.005     3.005

libcent 0       180.3     179.7     179.9
libamp  0        92.3      75.7     104.6
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       238.8     221.6     250.5
kozaiamp        101.6      83.4     180.0