Orbit Fit and Astrometric record for 45802

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: 45802     
# Created Tue Oct 24 01:36:19 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   18 observations of   18
# Arc:   2.88y
# First observation: 1999/07/21
#  Last observation: 2002/06/07
# Chi-squared of fit:    37.52 DOF:   30 RMS:  0.26
# Min/Max residuals:    -0.47    0.55
# Exact a, adot, b, bdot, g, gdot:
  1.467694E-05  2.266072E-02 -2.195415E-06 -3.056303E-04  2.366535E-02  3.097631E-04
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.913144  -55.698200    0.115923    0.015808   -1.006982  2451380.846353
# Heliocentric elements and errors
Epoch:              2451380.5000  =  1999/07/21
Mean Anomaly:           48.76871 +/-     0.000
Argument of Peri:       80.98477 +/-     0.000
Long of Asc Node:      173.50888 +/-     0.000
Inclination:             1.17526 +/-     0.000
Eccentricity:         0.01023251 +/-    0.0000
Semi-Major Axis:     43.55735855 +/-    0.0000
Time of Perihelion: 2437156.2469 +/-       0.0
Perihelion:          43.11165724 +/-    0.0000
Aphelion:            44.00305986 +/-    0.0000
Period (y)              287.4753 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.29053947 +/-    0.0000
Ecliptic Y          -35.79778159 +/-    0.0000
Ecliptic Z            0.67335043 +/-    0.0000
Ecliptic XDOT         0.00218273 +/-    0.0000
Ecliptic YDOT         0.00145586 +/-    0.0000
Ecliptic ZDOT        -0.00003474 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.26620444 +/-    0.0000
Geocenter to KBO     42.25589131 +/-    0.0000
# Hcoef:  7.98

The following table shows the complete astrometric record for 45802. 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 (45802) followed by the observatory code and reference code for the source of the astrometry.

1999 07  21.34561  20 25 37.11   -18 17 47.0   23.7R 45802     568  Ce8867      
1999 07  21.37354  20 25 36.98   -18 17 47.4   24.1R 45802     568  Ce8867      
1999 07  21.40086  20 25 36.85   -18 17 48.2         45802     568  Ce8867      
2000 08  05.32778  20 29 41.98   -18 04 37.5         45802     568  Cb8005      
2000 08  05.37175  20 29 41.78   -18 04 38.3   24.2R 45802     568  Cb8005      
2000 08  05.41993  20 29 41.56   -18 04 39.0         45802     568  Cb8005      
2000 08  06.31837  20 29 37.36   -18 04 54.2         45802     568  Cb8005      
2000 08  06.36419  20 29 37.12   -18 04 54.9   24.0R 45802     568  Cb8005      
2000 08  06.40555  20 29 36.93   -18 04 55.6         45802     568  Cb8005      
2001 07  25.35182  20 35 52.92   -17 43 17.4   23.5R 45802     568  Cd3308      
2001 07  25.40974  20 35 52.67   -17 43 18.4         45802     568  Cd3308      
2001 07  25.46294  20 35 52.39   -17 43 19.3   24.0R 45802     568  Cd3308      
2001 07  26.38082  20 35 48.06   -17 43 35.6         45802     568  Cd3308      
2001 09  20.17230  20 32 02.87   -17 57 55.8         45802     675  Ce0222      
2001 09  20.21909  20 32 02.78   -17 57 56.5   24.3R 45802     675  Ce0222      
2002 06  07.40825  20 44 15.32   -17 13 03.6   24. R 45802     675  Cf8836      
2002 06  07.43601  20 44 15.21   -17 13 04.2         45802     675  Cf8836      
2002 06  07.45562  20 44 15.16   -17 13 04.4         45802     675  Cf8836      

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    -0.37
  2   0.0001      0.00     0.11       0.00     0.50
  3   0.0002      0.00     0.14       0.00     0.15
  4   1.0431      0.00    -0.20       0.00    -0.43
  5   1.0432      0.00    -0.05       0.00    -0.47
  6   1.0433      0.00     0.11       0.00    -0.35
  7   1.0458      0.00     0.15       0.00    -0.25
  8   1.0459      0.00    -0.18       0.00    -0.16
  9   1.0460      0.00    -0.07       0.00    -0.16
 10   2.0123      0.00     0.13       0.00     0.04
 11   2.0125      0.00     0.55       0.00     0.07
 12   2.0126      0.00     0.18       0.00     0.10
 13   2.0152      0.00     0.18       0.00    -0.10
 14   2.1679      0.00    -0.25       0.00     0.41
 15   2.1680      0.00     0.25       0.00     0.19
 16   2.8804      0.00     0.32       0.00     0.32
 17   2.8805      0.00    -0.26       0.00    -0.03
 18   2.8805      0.00    -0.25       0.00    -0.05

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.

45802    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.483    43.483    43.483
ecceobj         0.009     0.009     0.009
incobj          1.175     1.175     1.175
qmin           42.379    42.380    42.378
qmax           44.755    44.754    44.756
amean          43.497    43.497    43.497
amin           43.170    43.171    43.170
amax           43.835    43.834    43.835
emean           0.010     0.010     0.010
emin            0.000     0.000     0.000
emax            0.021     0.021     0.022
imean           2.187     2.187     2.187
imin            1.422     1.423     1.422
imax            2.867     2.867     2.867
excite_mean     0.040     0.040     0.040
fracstop        1.000     1.000     1.000
cjmean          3.094     3.094     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       175.8     175.9     175.8
kozaiamp        179.9     179.9     180.0