Orbit Fit and Astrometric record for 15810

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: 15810     
# Created Wed Sep  3 01:36:24 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   43 observations of   43
# Arc:   6.12y
# First observation: 1994/05/12
#  Last observation: 2000/06/25
# Chi-squared of fit:   287.75 DOF:   80 RMS:  0.46
# Min/Max residuals:    -1.04    1.85
# Exact a, adot, b, bdot, g, gdot:
  1.954966E-05  3.336241E-02 -1.484707E-06 -3.545616E-04  2.960350E-02  4.606701E-06
# 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
    3.867091 -116.035606    0.225583    0.066035   -0.976794  2449484.581257
# Heliocentric elements and errors
Epoch:              2449484.5000  =  1994/05/12
Mean Anomaly:          357.58769 +/-     0.000
Argument of Peri:      101.98165 +/-     0.000
Long of Asc Node:      144.71091 +/-     0.000
Inclination:             3.80296 +/-     0.000
Eccentricity:         0.12342872 +/-    0.0000
Semi-Major Axis:     39.65221499 +/-    0.0000
Time of Perihelion: 2450095.6255 +/-       0.0
Perihelion:          34.75799285 +/-    0.0000
Aphelion:            44.54643712 +/-    0.0000
Period (y)              249.6947 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.42549125 +/-    0.0000
Ecliptic Y          -31.07047705 +/-    0.0000
Ecliptic Z            2.27815795 +/-    0.0000
Ecliptic XDOT         0.00277670 +/-    0.0000
Ecliptic YDOT        -0.00136029 +/-    0.0000
Ecliptic ZDOT        -0.00003282 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.76363872 +/-    0.0000
Geocenter to KBO     33.77982102 +/-    0.0000
# Hcoef:  7.65

The following table shows the complete astrometric record for 15810. 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 (15810) followed by the observatory code and reference code for the source of the astrometry.

1994 05  12.08056  16 10 53.63   -17 08 26.8   22.5R 15810     950  A23646      
1994 05  15.04028  16 10 36.89   -17 07 38.1   22.8V 15810     950  A23646      
1994 05  16.06528  16 10 30.96   -17 07 21.6         15810     950  A23646      
1994 05  17.08472  16 10 25.13   -17 07 04.9         15810     950  A23646      
1994 06  05.06875  16 08 35.29   -17 02 15.2         15810     950   23646      
1994 06  07.3699   16 08 22.33   -17 01 43.0         15810     568  A23582      
1994 06  07.4199   16 08 22.05   -17 01 42.4         15810     568  A23583      
1994 06  07.4768   16 08 21.73   -17 01 41.6         15810     568  A23583      
1994 06  07.5313   16 08 21.42   -17 01 40.8         15810     568  A23583      
1995 02  01.23176  16 20 56.17   -17 44 07.7         15810     950  C24881      
1995 02  01.28837  16 20 56.42   -17 44 08.1         15810     950  C24881      
1995 02  02.23795  16 21 00.44   -17 44 12.4         15810     950  C24881      
1995 03  29.71221  16 21 51.41   -17 40 24.8         15810     413  C25264      
1995 03  29.76829  16 21 51.27   -17 40 24.2         15810     413  C25264      
1995 03  30.73788  16 21 48.95   -17 40 12.7         15810     413  C25264      
1995 03  30.76010  16 21 48.90   -17 40 12.5         15810     413  C25264      
1995 04  01.2084   16 21 45.19   -17 39 56.5         15810     950  C25182      
1995 04  01.2458   16 21 45.12   -17 39 56.2   22.7R 15810     950  C25029      
1997 04  07.18209  16 37 09.18   -18 17 04.4         15810     950  C30242      
1997 04  07.21675  16 37 09.07   -18 17 04.0         15810     950  C30242      
1997 05  28.54142  16 33 02.00   -18 06 04.8         15810     568  C29991      
1997 05  28.58255  16 33 01.75   -18 06 04.6         15810     568  C29991      
1997 05  30.34590  16 32 51.43   -18 05 42.6   22.6R 15810     696  C30018      
1997 05  30.39380  16 32 51.08   -18 05 42.7         15810     696  C30019      
1997 05  30.41681  16 32 50.95   -18 05 41.9         15810     696  C30019      
1997 06  11.33266  16 31 41.32   -18 03 22.5   22.6R 15810     688  C30003      
1997 06  11.34510  16 31 41.24   -18 03 22.7   23.0R 15810     688  C30003      
1997 06  11.35692  16 31 41.22   -18 03 22.7   23.9R 15810     688  C30003      
1997 06  11.36766  16 31 41.13   -18 03 22.6   22.5R 15810     688  C30003      
1997 06  11.37833  16 31 41.01   -18 03 22.0   22.8R 15810     688  C30003      
1997 06  11.39075  16 31 40.98   -18 03 22.5   22.1R 15810     688  C30003      
1998 05  03.36892  16 43 20.00   -18 29 28.4         15810     696  Ca1216      
1998 05  03.44002  16 43 19.63   -18 29 27.4         15810     696  Ca1216      
1998 05  24.03333  16 41 27.36   -18 25 14.2         15810     950  Ca1682      
1998 05  24.07462  16 41 27.28   -18 25 13.6         15810     950  Ca1682      
1998 05  25.07339  16 41 21.30   -18 25 01.8         15810     950  Ca1682      
1998 05  25.10528  16 41 21.10   -18 25 01.4         15810     950  Ca1682      
1999 04  12.57230  16 52 41.15   -18 49 44.8   23.3R 15810     568  Ca4450      
1999 04  12.61161  16 52 41.02   -18 49 44.3   23.3R 15810     568  Ca4450      
1999 05  24.31837  16 49 25.50   -18 42 05.1   22.0R 15810     697  Cb0711      
1999 05  24.35749  16 49 25.26   -18 42 04.9   22.1R 15810     697  Cb0711      
2000 06  24.99207  16 54 15.23   -18 53 06.7         15810     950  Cb6356      
2000 06  25.02533  16 54 15.04   -18 53 06.3         15810     950  Cb6356      

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    -0.23       0.00     0.27
  2   0.0081      0.00     0.05       0.00     0.52
  3   0.0109      0.00    -1.04       0.00     0.31
  4   0.0137      0.00    -0.79       0.00     0.46
  5   0.0657      0.00    -0.82       0.00    -0.17
  6   0.0720      0.00     0.64       0.00     0.17
  7   0.0721      0.00     0.75       0.00     0.09
  8   0.0723      0.00     0.86       0.00     0.10
  9   0.0724      0.00     0.89       0.00     0.15
 10   0.7259      0.00     0.00       0.00     0.29
 11   0.7261      0.00     0.16       0.00     0.16
 12   0.7287      0.00    -0.01       0.00     0.03
 13   0.8806      0.00     0.14       0.00    -0.40
 14   0.8807      0.00     0.09       0.00    -0.44
 15   0.8834      0.00     0.16       0.00    -0.04
 16   0.8834      0.00     0.26       0.00    -0.09
 17   0.8874      0.00    -0.41       0.00    -0.77
 18   0.8875      0.00     0.06       0.00    -0.92
 19   2.9051      0.00     0.27       0.00    -0.25
 20   2.9052      0.00     0.19       0.00    -0.23
 21   3.0458      0.00     0.05       0.00     0.04
 22   3.0459      0.00    -0.03       0.00    -0.29
 23   3.0507      0.00     0.63       0.00    -0.13
 24   3.0508      0.00    -0.33       0.00    -0.83
 25   3.0509      0.00    -0.22       0.00    -0.32
 26   3.0835      0.00     0.07       0.00     0.69
 27   3.0835      0.00    -0.05       0.00     0.35
 28   3.0836      0.00     0.69       0.00     0.22
 29   3.0836      0.00     0.28       0.00     0.20
 30   3.0836      0.00    -0.59       0.00     0.69
 31   3.0837      0.00     0.04       0.00     0.05
 32   3.9761      0.00    -0.38       0.00    -0.48
 33   3.9763      0.00    -0.55       0.00    -0.36
 34   4.0327      0.00    -0.61       0.00    -0.15
 35   4.0328      0.00     1.85       0.00    -0.04
 36   4.0356      0.00    -0.56       0.00    -0.13
 37   4.0357      0.00    -0.72       0.00    -0.11
 38   4.9185      0.00     0.11       0.00     0.10
 39   4.9186      0.00     0.02       0.00     0.21
 40   5.0328      0.00     0.50       0.00     0.19
 41   5.0329      0.00     0.35       0.00    -0.04
 42   6.1216      0.00     0.10       0.00     0.17
 43   6.1217      0.00     0.06       0.00     0.36

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.

15810    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.178    39.178    39.178
ecceobj         0.113     0.113     0.113
incobj          3.802     3.802     3.802
qmin           33.784    33.784    33.784
qmax           45.729    45.730    45.728
amean          39.459    39.459    39.459
amin           39.008    39.008    39.008
amax           39.957    39.957    39.957
emean           0.125     0.125     0.125
emin            0.105     0.105     0.105
emax            0.145     0.145     0.145
imean           3.422     3.422     3.422
imin            2.546     2.546     2.546
imax            4.242     4.242     4.242
excite_mean     0.138     0.138     0.138
fracstop        1.000     1.000     1.000
cjmean          3.030     3.030     3.030

libcent 0       180.1     180.1     180.1
libamp  0        95.5      95.5      95.6
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       182.6     182.6     182.6
kozaiamp        180.0     179.9     180.0