Orbit Fit and Astrometric record for 80806

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: 80806     
# Created Tue Dec 12 02:36:31 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   48 observations of   48
# Arc:   7.92y
# First observation: 2000/02/06
#  Last observation: 2008/01/08
# Chi-squared of fit:   151.84 DOF:   90 RMS:  0.31
# Min/Max residuals:    -0.75    0.92
# Exact a, adot, b, bdot, g, gdot:
  1.513976E-05  2.400958E-02  1.154078E-07  2.208985E-05  2.456995E-02  1.555346E-03
# 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
    3.846930  134.748439   -0.042420    0.066086   -0.985984  2451580.798323
# Heliocentric elements and errors
Epoch:              2451580.5000  =  2000/02/06
Mean Anomaly:           75.99216 +/-     0.000
Argument of Peri:        5.40229 +/-     0.000
Long of Asc Node:       45.48281 +/-     0.000
Inclination:             3.75634 +/-     0.000
Eccentricity:         0.06995972 +/-    0.0000
Semi-Major Axis:     42.19914344 +/-    0.0000
Time of Perihelion: 2430444.6281 +/-       0.0
Perihelion:          39.24690302 +/-    0.0000
Aphelion:            45.15138386 +/-    0.0000
Period (y)              274.1345 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -29.30744748 +/-    0.0000
Ecliptic Y           29.51486070 +/-    0.0000
Ecliptic Z            2.73063377 +/-    0.0000
Ecliptic XDOT        -0.00202739 +/-    0.0000
Ecliptic YDOT        -0.00175365 +/-    0.0000
Ecliptic ZDOT         0.00001419 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.68340477 +/-    0.0000
Geocenter to KBO     40.70011693 +/-    0.0000
# Hcoef:  6.35

The following table shows the complete astrometric record for 80806. 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 (80806) followed by the observatory code and reference code for the source of the astrometry.

2000 02  06.29758  09 13 38.01   +20 05 07.7   22.1R 80806     695  Cb1115      
2000 02  06.42649  09 13 37.33   +20 05 10.5         80806     695  Cb1115      
2000 03  01.11833  09 11 41.94   +20 13 02.4   22.1R 80806     695  Cb1115      
2000 03  01.20021  09 11 41.55   +20 13 03.8         80806     695  Cb1115      
2000 03  01.32049  09 11 40.99   +20 13 05.3         80806     695  Cb1115      
2000 12  21.49799  09 22 32.52   +19 23 17.2         80806     568  Cc3758      
2000 12  21.62890  09 22 32.11   +19 23 19.8         80806     568  Cc3758      
2000 12  22.60977  09 22 29.12   +19 23 37.9   23.2R 80806     568  Cc3758      
2001 02  21.20946  09 17 54.57   +19 45 53.4   22.5R 80806     688  Cc6636      
2001 02  21.25983  09 17 54.28   +19 45 54.4         80806     688  Cc6636      
2001 02  25.36154  09 17 34.77   +19 47 14.3   22.5R 80806     568  Cd0809      
2001 02  25.41685  09 17 34.51   +19 47 15.3         80806     568  Cd0809      
2001 03  26.10639  09 15 41.35   +19 54 01.5   20.2  80806     304  Ce8743      
2001 03  26.13061  09 15 41.26   +19 54 01.6         80806     304  Ce8743      
2001 04  26.28050  09 14 49.94   +19 55 04.0   22.6R 80806     568  Cd0809      
2001 04  26.36598  09 14 49.92   +19 55 03.7         80806     568  Cd0809      
2001 04  27.26924  09 14 49.79   +19 54 58.9         80806     568  Cd0809      
2002 02  06.51755  09 24 40.79   +19 15 07.0   22.0R 80806     568  Cf1711      
2002 02  06.56619  09 24 40.55   +19 15 08.0         80806     568  Cf1711      
2002 02  13.17623  09 24 07.54   +19 17 40.0   21.7R 80806     304   f1711      
2002 02  13.22398  09 24 07.29   +19 17 41.1         80806     304   f1711      
2004 03  18.21534  09 32 32.95   +18 36 13.1   22.6R 80806     688  Ck2009      
2004 03  18.29870  09 32 32.65   +18 36 14.2         80806     688  Ck2009      
2005 03  12.208265 09 38 21.66   +18 07 59.6   22.5V 80806     645  C~1PwS      
2005 03  12.209094 09 38 21.66   +18 07 59.6   22.5V 80806     645  C~1PwS      
2005 03  12.211582 09 38 21.65   +18 07 59.6   23.5V 80806     645  C~1PwS      
2005 11  05.93393  09 49 39.34   +17 05 11.4   22.8R 80806     250  S~06GJ      
2005 11  05.94064  09 49 39.35   +17 05 11.3         80806     250  S~06GJ      
2005 11  05.94735  09 49 39.37   +17 05 11.3         80806     250  S~06GJ      
2007 10  25.66571  09 59 21.80   +16 11 53.7   23.4R 80806     250  S~06GJ      
2007 10  25.67335  09 59 21.82   +16 11 53.6         80806     250  S~06GJ      
2007 10  25.68098  09 59 21.84   +16 11 53.5         80806     250  S~06GJ      
2007 10  25.68862  09 59 21.87   +16 11 53.4         80806     250  S~06GJ      
2007 10  28.12960  09 59 29.27   +16 11 26.8         80806     250  S~06GJ      
2007 10  28.13723  09 59 29.29   +16 11 26.7         80806     250  S~06GJ      
2007 10  28.15321  09 59 29.34   +16 11 26.6         80806     250  S~06GJ      
2007 12  11.95599  10 00 08.11   +16 12 09.8         80806     250  S~06GJ      
2007 12  11.96362  10 00 08.10   +16 12 09.9         80806     250  S~06GJ      
2007 12  11.97126  10 00 08.09   +16 12 09.9         80806     250  S~06GJ      
2007 12  11.97890  10 00 08.08   +16 12 10.0         80806     250  S~06GJ      
2008 01  08.46073  09 59 01.27   +16 20 09.5         80806     250  S~06GJ      
2008 01  08.46698  09 59 01.25   +16 20 09.6         80806     250  S~06GJ      
2008 01  08.47462  09 59 01.21   +16 20 09.9         80806     250  S~06GJ      
2008 01  08.52462  09 59 01.04   +16 20 11.0         80806     250  S~06GJ      
2008 01  08.53365  09 59 01.01   +16 20 11.2         80806     250  S~06GJ      
2008 01  08.54337  09 59 00.97   +16 20 11.4         80806     250  S~06GJ      
2008 01  08.58990  09 59 00.82   +16 20 12.4         80806     250  S~06GJ      
2008 01  08.59615  09 59 00.79   +16 20 12.5         80806     250  S~06GJ      

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    -0.15       0.00     0.92
  2   0.0004      0.00    -0.12       0.00    -0.10
  3   0.0652      0.00     0.41       0.00     0.22
  4   0.0654      0.00     0.17       0.00     0.22
  5   0.0658      0.00     0.03       0.00    -0.32
  6   0.8739      0.00    -0.13       0.00    -0.01
  7   0.8743      0.00    -0.11       0.00     0.17
  8   0.8770      0.00     0.55       0.00     0.03
  9   1.0429      0.00     0.41       0.00    -0.07
 10   1.0430      0.00    -0.24       0.00    -0.08
 11   1.0542      0.00     0.00       0.00     0.12
 12   1.0544      0.00     0.07       0.00     0.08
 13   1.1329      0.00     0.20       0.00     0.01
 14   1.1330      0.00    -0.03       0.00    -0.10
 15   1.2183      0.00     0.15       0.00    -0.13
 16   1.2185      0.00     0.19       0.00     0.01
 17   1.2210      0.00     0.13       0.00    -0.20
 18   2.0020      0.00    -0.75       0.00    -0.38
 19   2.0021      0.00    -0.64       0.00    -0.49
 20   2.0202      0.00     0.08       0.00     0.81
 21   2.0203      0.00    -0.04       0.00     0.85
 22   4.1120      0.00    -0.24       0.00     0.27
 23   4.1123      0.00     0.06       0.00     0.19
 24   5.0949      0.00     0.05       0.00    -0.41
 25   5.0949      0.00     0.10       0.00    -0.42
 26   5.0949      0.00     0.11       0.00    -0.47
 27   5.7485      0.00     0.24       0.00    -0.49
 28   5.7485      0.00     0.20       0.00    -0.56
 29   5.7485      0.00     0.31       0.00    -0.53
 30   7.7163      0.00     0.49       0.00     0.10
 31   7.7163      0.00     0.43       0.00     0.09
 32   7.7163      0.00     0.37       0.00     0.08
 33   7.7163      0.00     0.46       0.00     0.07
 34   7.7230      0.00     0.42       0.00     0.11
 35   7.7230      0.00     0.39       0.00     0.09
 36   7.7231      0.00     0.43       0.00     0.15
 37   7.8457      0.00    -0.41       0.00     0.43
 38   7.8458      0.00    -0.41       0.00     0.44
 39   7.8458      0.00    -0.42       0.00     0.35
 40   7.8458      0.00    -0.42       0.00     0.35
 41   7.9210      0.00     0.00       0.00    -0.13
 42   7.9211      0.00     0.03       0.00    -0.17
 43   7.9211      0.00    -0.17       0.00    -0.03
 44   7.9212      0.00    -0.10       0.00    -0.04
 45   7.9212      0.00    -0.08       0.00    -0.04
 46   7.9213      0.00    -0.17       0.00    -0.05
 47   7.9214      0.00     0.02       0.00    -0.08
 48   7.9214      0.00    -0.10       0.00    -0.12

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.

80806    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.186    42.186    42.186
ecceobj         0.070     0.070     0.070
incobj          3.756     3.756     3.756
qmin           38.673    38.641    38.633
qmax           45.955    45.954    45.934
amean          42.202    42.203    42.202
amin           41.851    41.867    41.865
amax           42.555    42.556    42.549
emean           0.055     0.055     0.055
emin            0.025     0.025     0.026
emax            0.081     0.081     0.081
imean           2.150     2.149     2.150
imin            0.136     0.138     0.133
imax            3.335     3.335     3.334
excite_mean     0.067     0.067     0.068
fracstop        1.000     1.000     1.000
cjmean          3.074     3.075     3.074

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       178.0     178.2     178.2
kozaiamp        179.9     179.9     180.0