Orbit Fit and Astrometric record for 04KM19

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: 04KM19    
# Created Sat Dec 16 02:37:22 2017
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   18
# Arc:   4.04y
# First observation: 2004/05/24
#  Last observation: 2008/06/08
Preliminary a, adot, b, bdot, g, gdot:
   0.000032   0.037436  -0.000004   0.000717   0.031349   0.000000
# Chi-squared of fit:    12.61 DOF:   28 RMS:  0.15
# Min/Max residuals:    -0.45    0.22
# Exact a, adot, b, bdot, g, gdot:
  2.028311E-05  3.740718E-02 -2.564710E-07  7.178603E-04  3.046286E-02  5.861195E-04
# Covariance matrix:
  2.5427E-13 -1.4101E-13  3.3025E-16 -1.3883E-15  1.1132E-13 -4.9249E-13
 -1.4101E-13  4.2096E-13 -3.1936E-15  7.5427E-15  5.0227E-13  2.7371E-12
  3.3025E-16 -3.1936E-15  2.0774E-13 -6.7706E-14 -5.9809E-15 -2.3083E-14
 -1.3883E-15  7.5427E-15 -6.7706E-14  3.7885E-14  1.0242E-14  5.3926E-14
  1.1132E-13  5.0227E-13 -5.9809E-15  1.0242E-14  1.9828E-12  3.7888E-12
 -4.9249E-13  2.7371E-12 -2.3083E-14  5.3926E-14  3.7888E-12  1.9580E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.312448 -125.475680   -0.161821   -0.022849   -0.999505  2453149.874923
# Heliocentric elements and errors
Epoch:              2453140.5000  =  2004/05/15
Mean Anomaly:            2.91587 +/-     0.016
Argument of Peri:      305.38540 +/-     0.031
Long of Asc Node:      283.73682 +/-     0.007
Inclination:             1.68872 +/-     0.000
Eccentricity:         0.29520554 +/-    0.0002
Semi-Major Axis:     47.94297358 +/-    0.0126
Time of Perihelion: 2452158.4110 +/-       5.3
Perihelion:          33.78994240 +/-    0.0115
Aphelion:            62.09600476 +/-    0.0179
Period (y)              331.9676 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.49813894 +/-    0.0009
Ecliptic Y          -27.63253844 +/-    0.0012
Ecliptic Z           -0.75186234 +/-    0.0000
Ecliptic XDOT         0.00270376 +/-    0.0000
Ecliptic YDOT        -0.00200221 +/-    0.0000
Ecliptic ZDOT         0.00006342 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.82750212 +/-    0.0011
Geocenter to KBO     32.82686364 +/-    0.0015
# Hcoef:  8.33

The following table shows the complete astrometric record for 04KM19. 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 (04KM19) followed by the observatory code and reference code for the source of the astrometry.

2004 05  24.37418  15 27 16.95   -20 10 24.6   23.5R 04KM19    568  C~0X5X      
2004 05  24.39924  15 27 16.81   -20 10 24.0   23.5R 04KM19    568  C~0X5X      
2004 05  24.42176  15 27 16.67   -20 10 23.7   23.6R 04KM19    568  C~0X5X      
2004 05  25.38306  15 27 11.12   -20 10 03.0   22.9g 04KM19    568  C~0X5X      
2004 06  10.39312  15 25 43.14   -20 04 28.7   22.8i 04KM19    568  C~0X5X      
2004 06  10.46087  15 25 42.79   -20 04 27.1   23.1i 04KM19    568  C~0X5X      
2006 05  26.35069  15 45 01.82   -21 04 57.4   23.1r 04KM19    568  C~0X5X      
2006 05  26.38446  15 45 01.62   -21 04 56.8   23.2r 04KM19    568  C~0X5X      
2006 05  26.41780  15 45 01.42   -21 04 56.2   23.2r 04KM19    568  C~0X5X      
2006 05  27.42841  15 44 55.45   -21 04 37.0         04KM19    568  C~0X5X      
2006 06  30.27014  15 41 59.84   -20 54 27.9   23.4r 04KM19    568  C~0X5X      
2006 07  01.29196  15 41 55.68   -20 54 12.4   23.3r 04KM19    568  C~0X5X      
2006 07  01.30505  15 41 55.64   -20 54 12.1   23.4r 04KM19    568  C~0X5X      
2008 05  04.36860  16 05 08.74   -21 58 32.0         04KM19    695  C~0X5X      
2008 05  04.40777  16 05 08.52   -21 58 31.5         04KM19    695  C~0X5X      
2008 05  05.42526  16 05 02.82   -21 58 15.9         04KM19    695  C~0X5X      
2008 06  08.07373  16 01 44.60   -21 48 58.0         04KM19    807  C~0X5X      
2008 06  08.16321  16 01 44.08   -21 48 56.7         04KM19    807  C~0X5X      

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    -0.18       0.00     0.13
  2   0.0001     -2.06    -0.08       0.10     0.22
  3   0.0001     -4.04    -0.13      -0.10     0.02
  4   0.0028    -84.88     0.02       0.74     0.09
  5   0.0466  -1368.23     0.18      18.41    -0.10
  6   0.0468  -1373.41     0.18      18.74     0.13
  7   2.0040  15327.61     0.03     297.68     0.07
  8   2.0041  15324.73     0.09     297.65     0.03
  9   2.0042  15321.86     0.11     297.62    -0.02
 10   2.0070  15235.65     0.12     298.01    -0.45
 11   2.0996  12690.85    -0.18     346.43    -0.29
 12   2.1024  12630.34    -0.15     348.48    -0.24
 13   2.1025  12629.73     0.02     348.64    -0.10
 14   3.9452  32711.20    -0.09     586.19     0.21
 15   3.9453  32708.02    -0.03     586.11     0.14
 16   3.9481  32625.19 (  -0.05)    586.52 (   0.54)
 17   4.0402  29746.18     0.02     607.83     0.19
 18   4.0405  29738.67     0.08     607.71    -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.

04KM19    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        47.350    47.387    47.313
ecceobj         0.286     0.287     0.286
incobj          1.689     1.688     1.689
qmin           33.170    33.173    33.164
qmax           63.164    63.183    63.231
amean          47.797    47.798    47.798
amin           47.350    47.336    47.313
amax           48.369    48.390    48.400
emean           0.288     0.288     0.288
emin            0.272     0.270     0.267
emax            0.306     0.306     0.307
imean           4.372     4.405     4.425
imin            3.255     3.254     3.255
imax            5.373     5.477     5.539
excite_mean     0.298     0.298     0.298
fracstop        1.000     1.000     1.000
cjmean          3.035     3.036     3.036

libcent 0       287.2     286.9     286.8
libamp  0        10.1      11.9      14.2
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       187.6     187.0     185.4
kozaiamp        180.0     180.0     180.0