Orbit Fit and Astrometric record for 02XE91

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: 02XE91    
# Created Tue Oct 24 01:37:21 2017
# Orbit generated from Bernstein formalism
# Fitting    5 observations of    5
# Arc:  56.97d
# First observation: 2002/12/04
#  Last observation: 2003/01/30
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit:     2.93 DOF:    6 RMS:  0.14
# Min/Max residuals:    -0.27    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.296355E-05  1.653503E-02 -8.694596E-07 -1.753202E-03  1.979804E-02  0.000000E+00
# Covariance matrix:
  2.8986E-11  3.5428E-08 -1.4206E-13  6.8500E-11  5.8854E-09  0.0000E+00
  3.5428E-08  4.4057E-05 -1.7664E-10  8.5175E-08  7.3182E-06  0.0000E+00
 -1.4206E-13 -1.7664E-10  4.9162E-13 -3.5138E-12 -2.9342E-11  0.0000E+00
  6.8500E-11  8.5175E-08 -3.5138E-12  2.1591E-10  1.4148E-08  0.0000E+00
  5.8854E-09  7.3182E-06 -2.9342E-11  1.4148E-08  1.2156E-06  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  1.0211E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.662764   91.417379    0.328825    0.010687   -0.924603  2452612.870803
# Heliocentric elements and errors
Epoch:              2452610.5000  =  2002/12/02
Mean Anomaly:          186.39365 +/-    83.310
Argument of Peri:      348.30183 +/-    66.010
Long of Asc Node:      277.19661 +/-     2.462
Inclination:             6.05793 +/-     2.426
Eccentricity:         0.07539502 +/-    0.5787
Semi-Major Axis:     47.85223957 +/-   23.1419
Time of Perihelion: 2510916.7261 +/-  142752.8
Perihelion:          44.24441919 +/-   34.9967
Aphelion:            51.46005994 +/-   37.2328
Period (y)              331.0256 +/-    240.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -0.94526748 +/-    0.0693
Ecliptic Y           51.42860201 +/-    2.8118
Ecliptic Z            0.58421280 +/-    0.0325
Ecliptic XDOT        -0.00229328 +/-    0.0008
Ecliptic YDOT        -0.00005749 +/-    0.0014
Ecliptic ZDOT        -0.00024223 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   51.44060595 +/-    2.8112
Geocenter to KBO     50.51004236 +/-    2.8129
# Hcoef:  5.92

The following table shows the complete astrometric record for 02XE91. 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 (02XE91) followed by the observatory code and reference code for the source of the astrometry.

2002 12  04.37006  06 06 12.62   +24 05 39.9   22.4R 02XE91    695  Ch0143      
2002 12  04.47819  06 06 12.15   +24 05 40.0         02XE91    695  Ch0143      
2002 12  05.36248  06 06 08.39   +24 05 40.0         02XE91    695  Ch0143      
2003 01  30.24231  06 02 11.82   +24 05 00.3   23.0R 02XE91    688  Ch1704      
2003 01  30.34228  06 02 11.44   +24 05 00.0         02XE91    688  Ch1704      

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    -0.11
  2   0.0003     -6.44    -0.01       0.03     0.02
  3   0.0027    -57.92    -0.04      -0.52     0.10
  4   0.1557  -3297.35     0.27     -63.36     0.07
  5   0.1560  -3302.55    -0.27     -63.68    -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.

02XE91    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