Orbit Fit and Astrometric record for 04PD112

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: 04PD112   
# Created Tue Oct 24 01:37:31 2017
# Orbit generated from Bernstein formalism
# Fitting    6 observations of    6
# Arc:  60.10d
# First observation: 2004/08/13
#  Last observation: 2004/10/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000005   0.024748   0.000003   0.001689   0.020359   0.000000
# Chi-squared of fit:     9.11 DOF:    6 RMS:  0.22
# Min/Max residuals:    -0.32    0.31
# Exact a, adot, b, bdot, g, gdot:
  1.361527E-05  1.707198E-02  1.118406E-06  1.722815E-03  1.908007E-02 -4.789185E-03
# Covariance matrix:
  1.1573E-12  5.1432E-10  2.3507E-13 -2.3035E-12  8.6111E-11 -3.5870E-10
  5.1432E-10  6.3131E-07  2.8727E-10 -3.0103E-09  1.0291E-07 -1.1423E-06
  2.3507E-13  2.8727E-10  7.2842E-13 -5.7566E-12  4.6820E-11 -5.2411E-10
 -2.3035E-12 -3.0103E-09 -5.7566E-12  6.9032E-11 -4.8878E-10  6.1874E-09
  8.6111E-11  1.0291E-07  4.6820E-11 -4.8878E-10  1.6795E-08 -1.7949E-07
 -3.5870E-10 -1.1423E-06 -5.2411E-10  6.1874E-09 -1.7949E-07  4.5895E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.500284  -13.115475    0.447393   -0.055676   -0.911793  2453230.682373
# Heliocentric elements and errors
Epoch:              2453230.5000  =  2004/08/13
Mean Anomaly:          317.70292 +/-    13.007
Argument of Peri:       44.65975 +/-    10.974
Long of Asc Node:       17.05205 +/-     1.196
Inclination:             6.72619 +/-     0.236
Eccentricity:         0.32261655 +/-    0.1509
Semi-Major Axis:     64.32781386 +/-   10.4738
Time of Perihelion: 2475371.8730 +/-    4137.8
Perihelion:          43.57459673 +/-   12.0210
Aphelion:            85.08103098 +/-   16.9136
Period (y)              515.9485 +/-    126.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           51.73254331 +/-    0.3460
Ecliptic Y          -12.51156789 +/-    0.0807
Ecliptic Z           -3.19980433 +/-    0.0218
Ecliptic XDOT        -0.00009941 +/-    0.0003
Ecliptic YDOT         0.00253103 +/-    0.0001
Ecliptic ZDOT         0.00028882 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   53.32010987 +/-    0.3363
Geocenter to KBO     52.41071740 +/-    0.3560
# Hcoef:  6.06

The following table shows the complete astrometric record for 04PD112. 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 (04PD112) followed by the observatory code and reference code for the source of the astrometry.

2004 08  13.18163  23 17 14.24   -08 24 05.3   22.5R 04PD112   807  Cl4405      
2004 08  13.28838  23 17 13.89   -08 24 07.7         04PD112   807  Cl4405      
2004 09  11.24828  23 15 33.93   -08 34 32.6         04PD112   304  Cl4405      
2004 09  11.26753  23 15 33.88   -08 34 32.2         04PD112   304  Cl4405      
2004 10  12.17265  23 13 49.01   -08 44 16.8   23.5R 04PD112   695  Cl8416      
2004 10  12.28189  23 13 48.64   -08 44 18.5         04PD112   695  Cl8416      

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     0.11       0.00     0.06
  2   0.0003     -5.72    -0.11      -0.17    -0.06
  3   0.0796  -1615.00    -0.30       4.70    -0.32
  4   0.0796  -1615.53     0.30       5.36     0.31
  5   0.1642  -3275.74     0.27      73.72    -0.09
  6   0.1645  -3281.46    -0.27      74.29     0.09

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.

04PD112    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0