Orbit Fit and Astrometric record for 15809

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: 15809     
# Created Tue Oct 24 01:36:15 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   52 observations of   52
# Arc:   7.09y
# First observation: 1994/05/11
#  Last observation: 2001/06/12
# Chi-squared of fit:   401.15 DOF:   98 RMS:  0.49
# Min/Max residuals:    -1.14    1.45
# Exact a, adot, b, bdot, g, gdot:
  1.933448E-05  3.069243E-02 -1.082377E-05 -7.674620E-03  2.856078E-02 -5.074769E-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
   -0.007169 -123.464089    0.112234   -0.000076   -0.998257  2449483.687597
# Heliocentric elements and errors
Epoch:              2449484.5000  =  1994/05/12
Mean Anomaly:          323.01586 +/-     0.000
Argument of Peri:      236.10585 +/-     0.000
Long of Asc Node:       56.33329 +/-     0.000
Inclination:            14.01818 +/-     0.000
Eccentricity:         0.22071690 +/-    0.0000
Semi-Major Axis:     42.52587929 +/-    0.0000
Time of Perihelion: 2459890.6812 +/-       0.0
Perihelion:          33.13969887 +/-    0.0000
Aphelion:            51.91205972 +/-    0.0000
Period (y)              277.3244 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.95069409 +/-    0.0000
Ecliptic Y          -29.98701650 +/-    0.0000
Ecliptic Z           -0.00477817 +/-    0.0000
Ecliptic XDOT         0.00272824 +/-    0.0000
Ecliptic YDOT        -0.00122008 +/-    0.0000
Ecliptic ZDOT        -0.00073577 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.01747585 +/-    0.0000
Geocenter to KBO     35.01319111 +/-    0.0000
# Hcoef:  7.64

The following table shows the complete astrometric record for 15809. 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 (15809) followed by the observatory code and reference code for the source of the astrometry.

1994 05  11.1869   15 36 54.72   -19 23 14.5   22.4R 15809     807  A23618      
1994 05  11.2475   15 36 54.34   -19 23 13.8         15809     807  A23618      
1994 05  11.3116   15 36 53.99   -19 23 12.6         15809     807  A23618      
1994 05  12.2371   15 36 48.71   -19 22 59.5         15809     807  A23618      
1994 05  12.2490   15 36 48.65   -19 22 59.5         15809     807  A23618      
1994 05  12.2906   15 36 48.38   -19 22 58.6         15809     807  A23618      
1994 06  07.3647   15 34 21.36   -19 16 34.4         15809     568  A23582      
1994 06  07.4094   15 34 21.14   -19 16 33.8         15809     568  A23582      
1994 06  07.4147   15 34 21.10   -19 16 33.8         15809     568  A23582      
1995 04  01.1955   15 47 04.92   -20 20 26.1         15809     950  C25182      
1995 04  01.2326   15 47 04.79   -20 20 25.8   23.2R 15809     950  C25182      
1995 04  06.25791  15 46 46.23   -20 19 52.0   23. R 15809     809  C25403      
1995 04  06.32027  15 46 45.98   -20 19 51.5         15809     809  C25403      
1995 04  06.34608  15 46 45.87   -20 19 51.3         15809     809  C25403      
1995 04  06.36009  15 46 45.83   -20 19 51.5         15809     809  C25403      
1995 04  06.37307  15 46 45.75   -20 19 51.2         15809     809  C25403      
1995 04  07.1299   15 46 42.78   -20 19 45.5   23.1R 15809     950  C25182      
1995 04  07.30278  15 46 42.09   -20 19 44.0         15809     809  C25403      
1995 04  07.39345  15 46 41.72   -20 19 43.4         15809     809  C25403      
1995 05  29.3913   15 42 05.09   -20 09 01.5         15809     568  A25268      
1995 05  29.4334   15 42 04.86   -20 09 01.0         15809     568  A25268      
1995 06  22.26594  15 39 59.00   -20 03 48.1         15809     675  C25493      
1995 06  22.32105  15 39 58.72   -20 03 47.5         15809     675  C25493      
1995 06  23.23889  15 39 54.53   -20 03 37.6         15809     675  C25493      
1995 06  23.30418  15 39 54.22   -20 03 36.3         15809     675  C25493      
1997 05  31.26456  15 56 03.32   -21 47 23.0   23.1R 15809     696  C30018      
1997 05  31.32733  15 56 03.00   -21 47 21.3         15809     696  C30018      
1997 06  03.31442  15 55 45.56   -21 46 43.7         15809     711  C30029      
1997 06  03.32236  15 55 45.44   -21 46 44.4         15809     711  C30029      
1997 06  04.30804  15 55 39.86   -21 46 30.6         15809     711  C30029      
1998 05  24.05453  16 04 07.00   -22 37 18.6         15809     950  Ca1682      
1998 05  24.08644  16 04 06.81   -22 37 18.2         15809     950  Ca1682      
1998 05  25.06345  16 04 00.93   -22 37 06.6         15809     950  Ca1682      
1998 05  25.09485  16 04 00.75   -22 37 06.2         15809     950  Ca1682      
1998 05  25.11521  16 04 00.63   -22 37 05.7         15809     950  Ca1682      
1998 06  18.25688  16 01 40.87   -22 32 16.8         15809     696  Ca1682      
1998 06  18.30572  16 01 40.49   -22 32 16.1         15809     696  Ca1682      
1999 05  21.38527  16 11 53.15   -23 25 18.9   23.0R 15809     697  Cb0711      
1999 05  22.34019  16 11 47.43   -23 25 09.9   23.0R 15809     697  Cb0711      
1999 05  23.32029  16 11 41.44   -23 24 58.9   22.9R 15809     697  Cb0711      
1999 05  23.35219  16 11 41.24   -23 24 58.3   22.6R 15809     697  Cb0711      
1999 05  24.30584  16 11 35.44   -23 24 48.2   23.0R 15809     697  Cb0711      
1999 05  24.34304  16 11 35.20   -23 24 47.8         15809     697  Cb0711      
1999 05  24.38344  16 11 34.97   -23 24 47.2   22.7R 15809     697  Cb0711      
2000 06  24.99663  16 16 01.85   -24 05 42.5         15809     950  Cb6356      
2000 06  25.02994  16 16 01.65   -24 05 42.1         15809     950  Cb6356      
2000 06  25.96840  16 15 56.75   -24 05 32.2         15809     950  Cb6356      
2000 06  26.00380  16 15 56.56   -24 05 32.0         15809     950  Cb6356      
2001 06  09.22218  16 25 18.55   -24 54 22.6   22.2  15809     304  Cf0777      
2001 06  09.23940  16 25 18.44   -24 54 22.4         15809     304  Cf0777      
2001 06  12.05753  16 25 01.39   -24 53 54.5         15809     304  Cf0777      
2001 06  12.09759  16 25 01.16   -24 53 54.1         15809     304  Cf0777      

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    -0.25       0.00     0.41
  2   0.0002      0.00    -0.51       0.00     1.22
  3   0.0003      0.00    -0.17       0.00     1.45
  4   0.0029      0.00     0.13       0.00     0.73
  5   0.0029      0.00     0.27       0.00     0.56
  6   0.0030      0.00    -0.15       0.00     0.83
  7   0.0744      0.00     0.23       0.00    -0.55
  8   0.0745      0.00     0.56       0.00    -0.57
  9   0.0745      0.00     0.39       0.00    -0.65
 10   0.8898      0.00    -0.01       0.00    -0.53
 11   0.8899      0.00     0.03       0.00    -0.45
 12   0.9037      0.00     0.06       0.00    -0.33
 13   0.9039      0.00     0.06       0.00    -0.28
 14   0.9039      0.00    -0.03       0.00    -0.28
 15   0.9040      0.00     0.21       0.00    -0.58
 16   0.9040      0.00    -0.20       0.00    -0.38
 17   0.9061      0.00     0.02       0.00    -0.13
 18   0.9065      0.00     0.07       0.00    -0.18
 19   0.9068      0.00     0.09       0.00    -0.28
 20   1.0492      0.00     1.07       0.00    -0.34
 21   1.0493      0.00     1.30       0.00    -0.45
 22   1.1145      0.00    -0.47       0.00    -0.15
 23   1.1147      0.00    -0.75       0.00    -0.19
 24   1.1172      0.00    -0.07       0.00    -0.62
 25   1.1174      0.00    -0.13       0.00    -0.06
 26   3.0557      0.00    -0.33       0.00     0.03
 27   3.0558      0.00     0.49       0.00     0.92
 28   3.0640      0.00     0.53       0.00    -0.00
 29   3.0640      0.00    -0.56       0.00    -0.81
 30   3.0667      0.00     1.34       0.00     0.31
 31   4.0352      0.00    -0.72       0.00     0.05
 32   4.0353      0.00    -0.63       0.00     0.07
 33   4.0380      0.00    -0.55       0.00     0.17
 34   4.0381      0.00    -0.37       0.00     0.19
 35   4.0381      0.00    -0.30       0.00     0.45
 36   4.1042      0.00     0.56       0.00    -0.91
 37   4.1044      0.00    -1.14       0.00    -0.79
 38   5.0272      0.00    -0.24       0.00     0.01
 39   5.0299      0.00     0.80       0.00    -0.90
 40   5.0325      0.00     0.24       0.00    -0.19
 41   5.0326      0.00     0.19       0.00     0.07
 42   5.0352      0.00     0.13       0.00     0.07
 43   5.0353      0.00    -0.02       0.00     0.07
 44   5.0354      0.00     0.27       0.00     0.24
 45   6.1241      0.00     0.21       0.00     0.11
 46   6.1241      0.00    -0.11       0.00     0.16
 47   6.1267      0.00     0.06       0.00     0.25
 48   6.1268      0.00     0.03       0.00     0.08
 49   7.0802      0.00     0.28       0.00     0.13
 50   7.0802      0.00     0.23       0.00     0.16
 51   7.0879      0.00     0.25       0.00     0.22
 52   7.0881      0.00     0.48       0.00     0.23

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.

15809    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.000    42.000    42.000
ecceobj         0.215     0.215     0.215
incobj         14.082    14.082    14.082
qmin           32.599    32.602    32.596
qmax           52.528    52.538    52.517
amean          42.327    42.327    42.327
amin           41.906    41.896    41.907
amax           42.799    42.807    42.794
emean           0.205     0.206     0.205
emin            0.177     0.177     0.177
emax            0.228     0.229     0.228
imean          13.509    13.509    13.511
imin           12.801    12.812    12.801
imax           14.486    14.474    14.491
excite_mean     0.311     0.311     0.311
fracstop        1.000     1.000     1.000
cjmean          2.968     2.968     2.968

libcent 0       180.1     178.7     180.6
libamp  0        63.1      62.7      63.4
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       177.6     178.2     177.3
kozaiamp        180.0     180.0     180.0