Orbit Fit and Astrometric record for 15875

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: 15875     
# Created Tue Oct 21 01:36:20 2014
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   72 observations of   72
# Arc:  12.03y
# First observation: 1996/10/11
#  Last observation: 2008/10/22
# Chi-squared of fit:   716.77 DOF:  138 RMS:  0.56
# Min/Max residuals:    -1.99    1.52
# Exact a, adot, b, bdot, g, gdot:
  2.298932E-05  5.511581E-02  4.176496E-08  2.377911E-03  3.922962E-02 -2.512931E-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
    5.329243   21.116576    0.038883    0.092194   -0.989863  2450367.921820
# Heliocentric elements and errors
Epoch:              2450368.5000  =  1996/10/12
Mean Anomaly:          355.07686 +/-     0.000
Argument of Peri:       74.89793 +/-     0.000
Long of Asc Node:      316.64728 +/-     0.000
Inclination:             5.68522 +/-     0.000
Eccentricity:         0.33332297 +/-    0.0000
Semi-Major Axis:     39.56149923 +/-    0.0000
Time of Perihelion: 2451611.4324 +/-       0.0
Perihelion:          26.37474297 +/-    0.0000
Aphelion:            52.74825549 +/-    0.0000
Period (y)              248.8384 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.62325841 +/-    0.0000
Ecliptic Y            9.45978861 +/-    0.0000
Ecliptic Z            2.36758147 +/-    0.0000
Ecliptic XDOT        -0.00155643 +/-    0.0000
Ecliptic YDOT         0.00352451 +/-    0.0000
Ecliptic ZDOT         0.00014877 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   26.48394333 +/-    0.0000
Geocenter to KBO     25.49100667 +/-    0.0000
# Hcoef:  6.80

The following table shows the complete astrometric record for 15875. 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 (15875) followed by the observatory code and reference code for the source of the astrometry.

1996 10  11.42110  01 09 50.70   +13 10 24.7   21.2R 15875     568  C30144      
1996 10  11.47472  01 09 50.32   +13 10 22.5         15875     568  C30144      
1996 10  11.51933  01 09 50.01   +13 10 20.8         15875     568  C30144      
1996 10  13.39487  01 09 37.08   +13 09 06.9         15875     568  C30144      
1996 10  13.42017  01 09 36.90   +13 09 05.9         15875     568  C30144      
1996 10  13.44534  01 09 36.73   +13 09 04.9         15875     568  C30144      
1996 11  15.13257  01 06 10.45   +12 46 51.3         15875     696  C30195      
1996 11  15.32258  01 06 09.46   +12 46 44.9         15875     696  C30195      
1996 11  17.20259  01 05 59.81   +12 45 35.0         15875     696  C30195      
1996 11  17.26354  01 05 59.43   +12 45 31.7   20.9R 15875     696  C30195      
1996 12  15.09951  01 04 23.68   +12 31 39.4         15875     696  C30195      
1996 12  15.18711  01 04 23.54   +12 31 37.6         15875     696  C30195      
1997 02  01.12366  01 05 53.93   +12 31 37.2         15875     696  C30195      
1997 02  01.17218  01 05 54.16   +12 31 38.1         15875     696  C30195      
1997 07  01.39800  01 26 10.64   +14 36 39.2   20.7V 15875     709  C30209      
1997 07  01.43037  01 26 10.71   +14 36 40.2   20.8V 15875     709  C30209      
1997 07  02.41956  01 26 14.48   +14 37 17.3   20.9V 15875     709  C30210      
1997 07  02.43575  01 26 14.55   +14 37 14.4   20.8V 15875     709  C30210      
1997 07  02.45194  01 26 14.72   +14 37 17.0   19.7V 15875     709  C30210      
1997 07  03.42345  01 26 18.22   +14 37 50.7   19.8V 15875     709  C30210      
1997 07  03.43963  01 26 18.27   +14 37 51.0   20.3V 15875     709  C30210      
1997 08  09.15118  01 26 56.29   +14 50 05.2   21.3R 15875     954  C30630      
1997 08  10.13616  01 26 54.68   +14 50 08.9         15875     954  C30630      
1997 09  08.46880  01 25 12.17   +14 46 05.2         15875     675  C30579      
1997 09  08.51471  01 25 11.94   +14 46 04.4         15875     675  C30579      
1997 09  10.18935  01 25 03.24   +14 45 29.3   21.2R 15875     950  C30629      
1997 09  10.21549  01 25 03.10   +14 45 28.7         15875     950  C30629      
1997 10  05.31434  01 22 27.75   +14 33 16.2   21.6V 15875     691  ca0009      
1997 10  05.33607  01 22 27.61   +14 33 16.1   21.3V 15875     691  ca0009      
1997 10  05.35755  01 22 27.44   +14 33 14.4   21.4V 15875     691  ca0009      
1997 10  25.01969  01 20 11.42   +14 20 28.0         15875     950  Ca0104      
1997 10  25.04797  01 20 11.23   +14 20 26.9         15875     950  Ca0104      
1997 10  25.10210  01 20 10.86   +14 20 24.8         15875     950  Ca0104      
1997 10  25.87469  01 20 05.60   +14 19 53.0         15875     950  Ca0104      
1997 10  25.95338  01 20 05.03   +14 19 49.9         15875     950  Ca0104      
1997 10  26.01854  01 20 04.56   +14 19 47.3         15875     950  Ca0104      
1997 11  08.28586  01 18 38.31   +14 10 41.7   20.7R 15875     696  Ca0191      
1997 11  08.34381  01 18 37.97   +14 10 39.2   20.7R 15875     696  Ca0191      
1997 11  08.65488  01 18 36.13   +14 10 27.9         15875     867  Ca0191      
1997 11  08.66183  01 18 36.08   +14 10 28.0         15875     867  Ca0191      
1997 11  08.66877  01 18 35.95   +14 10 27.0         15875     867  Ca0191      
1997 11  09.66565  01 18 29.93   +14 09 44.7         15875     867  Ca0191      
1997 11  09.67259  01 18 29.92   +14 09 45.3   21.5V 15875     867  Ca0191      
1997 11  09.67954  01 18 29.94   +14 09 45.9         15875     867  Ca0191      
1998 08  23.43197  01 38 17.20   +16 04 37.2         15875     684  Ca1940      
1998 08  26.36620  01 38 07.92   +16 04 22.3         15875     684  Ca1940      
1998 08  26.43301  01 38 07.69   +16 04 21.7         15875     684  Ca1940      
1998 08  27.40911  01 38 04.31   +16 04 15.9         15875     684  Ca1940      
1998 08  27.43721  01 38 04.26   +16 04 15.2         15875     684  Ca1940      
1998 08  27.46505  01 38 04.13   +16 04 15.2         15875     684  Ca1940      
1999 09  13.11917  01 49 03.09   +17 13 54.9   20.9R 15875     621  Ca6016      
1999 09  13.14870  01 49 02.96   +17 13 54.6   20.7R 15875     621  Ca6016      
1999 09  17.10644  01 48 42.28   +17 12 41.4   20.6R 15875     621  Ca6016      
1999 09  17.12854  01 48 42.14   +17 12 40.6   20.3R 15875     621  Ca6016      
1999 09  17.15065  01 48 42.06   +17 12 40.5   20.5R 15875     621  Ca6016      
1999 10  30.15872  01 43 56.52   +16 49 50.5   20.5R 15875     688  Ca7269      
1999 10  30.28035  01 43 55.72   +16 49 45.5         15875     688  Ca7269      
2001 10  20.52538  02 10 00.14   +19 17 15.5   21.5  15875     644  Cj0762      
2001 12  20.09591  02 03 54.47   +18 41 09.4         15875     644  Cj0762      
2002 11  01.30967  02 21 17.75   +20 16 38.8   21.   15875     644  Cj0762      
2003 09  25.05826  02 38 13.74   +21 34 19.4         15875     621  Cj0762      
2003 09  25.07770  02 38 13.63   +21 34 19.7   21.1R 15875     621  Cj0762      
2003 09  25.09715  02 38 13.57   +21 34 19.1         15875     621  Cj0762      
2003 10  24.02337  02 35 08.89   +21 23 35.8         15875     621  Cj0762      
2003 10  24.04670  02 35 08.68   +21 23 36.0   20.5R 15875     621  Cj0762      
2003 10  24.07393  02 35 08.53   +21 23 35.2         15875     621  Cj0762      
2008 07  22.18990  03 40 59.93   +25 15 38.3   22.9R 15875     250  S~06DV      
2008 07  22.19615  03 40 59.97   +25 15 38.5         15875     250  S~06DV      
2008 07  22.20240  03 41 00.01   +25 15 38.7         15875     250  S~06DV      
2008 07  22.20865  03 41 00.05   +25 15 38.9         15875     250  S~06DV      
2008 10  22.27228  03 40 16.41   +25 29 59.2   22.3r 15875     695  C~0gPn      
2008 10  22.30340  03 40 16.21   +25 29 58.7   22.3r 15875     695  C~0gPn      

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    -0.28       0.00    -0.60
  2   0.0001      0.00    -0.19       0.00     0.07
  3   0.0003      0.00    -0.14       0.00     0.15
  4   0.0054      0.00    -0.19       0.00     1.14
  5   0.0055      0.00    -0.22       0.00     1.15
  6   0.0055      0.00    -0.12       0.00     1.17
  7   0.0950      0.00     0.42       0.00    -1.18
  8   0.0956      0.00     0.84       0.00    -0.34
  9   0.1007      0.00     0.81       0.00     0.59
 10   0.1009      0.00    -0.17       0.00    -0.43
 11   0.1771      0.00    -0.60       0.00    -0.19
 12   0.1773      0.00    -0.41       0.00    -0.17
 13   0.3086      0.00    -0.24       0.00    -0.54
 14   0.3087      0.00    -0.58       0.00    -0.66
 15   0.7200      0.00     0.16       0.00    -0.39
 16   0.7201      0.00    -0.64       0.00    -0.56
 17   0.7228      0.00    -0.42       0.00     1.48
 18   0.7228      0.00    -0.26       0.00    -1.99
 19   0.7229      0.00     1.41       0.00     0.03
 20   0.7255      0.00     0.54       0.00     0.01
 21   0.7256      0.00     0.44       0.00    -0.25
 22   0.8261      0.00    -0.86       0.00     0.22
 23   0.8288      0.00    -1.41       0.00    -0.33
 24   0.9091      0.00    -0.71       0.00    -0.07
 25   0.9092      0.00    -0.54       0.00     0.06
 26   0.9138      0.00    -0.14       0.00    -0.54
 27   0.9139      0.00    -0.11       0.00    -0.58
 28   0.9826      0.00     0.27       0.00    -0.42
 29   0.9827      0.00     0.43       0.00     0.26
 30   0.9827      0.00     0.13       0.00    -0.67
 31   1.0365      0.00     0.39       0.00    -0.18
 32   1.0366      0.00     0.49       0.00    -0.12
 33   1.0368      0.00     0.58       0.00     0.01
 34   1.0389      0.00     0.23       0.00    -0.03
 35   1.0391      0.00    -0.17       0.00     0.08
 36   1.0393      0.00    -0.45       0.00     0.16
 37   1.0756      0.00    -0.11       0.00    -0.04
 38   1.0758      0.00     0.21       0.00    -0.18
 39   1.0766      0.00     1.09       0.00     1.13
 40   1.0766      0.00     0.98       0.00     1.52
 41   1.0767      0.00    -0.33       0.00     0.80
 42   1.0794      0.00    -0.01       0.00    -1.25
 43   1.0794      0.00     0.48       0.00    -0.36
 44   1.0794      0.00     1.42       0.00     0.52
 45   1.8645      0.00     0.22       0.00    -0.63
 46   1.8725      0.00     0.38       0.00    -0.16
 47   1.8727      0.00     0.41       0.00    -0.34
 48   1.8754      0.00    -0.24       0.00     0.60
 49   1.8755      0.00     0.53       0.00     0.10
 50   1.8755      0.00     0.08       0.00     0.31
 51   2.9205      0.00     0.01       0.00    -0.03
 52   2.9205      0.00     0.32       0.00     0.18
 53   2.9314      0.00    -0.22       0.00     0.36
 54   2.9314      0.00    -0.50       0.00     0.00
 55   2.9315      0.00     0.13       0.00     0.35
 56   3.0492      0.00    -0.94       0.00     0.40
 57   3.0496      0.00     0.06       0.00     0.20
 58   5.0242      0.00    -0.10       0.00     0.31
 59   5.1901      0.00    -0.84       0.00    -0.09
 60   6.0558      0.00    -0.21       0.00     0.92
 61   6.9531      0.00     0.32       0.00    -0.51
 62   6.9532      0.00     0.20       0.00     0.05
 63   6.9533      0.00     0.83       0.00    -0.29
 64   7.0324      0.00     0.19       0.00    -0.64
 65   7.0325      0.00    -0.39       0.00     0.26
 66   7.0326      0.00     0.36       0.00     0.28
 67  11.7776      0.00    -0.13       0.00    -0.12
 68  11.7776      0.00    -0.12       0.00    -0.11
 69  11.7776      0.00    -0.10       0.00    -0.10
 70  11.7777      0.00    -0.09       0.00    -0.09
 71  12.0297      0.00    -0.34       0.00     0.22
 72  12.0298      0.00    -0.22       0.00     0.17

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.

15875    quality flag:3

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

axisobj        39.893    39.893    39.893
ecceobj         0.339     0.339     0.339
incobj          5.689     5.689     5.689
qmin           25.984    25.984    25.984
qmax           53.540    53.540    53.540
amean          39.454    39.454    39.454
amin           39.092    39.092    39.092
amax           39.948    39.948    39.948
emean           0.324     0.324     0.324
emin            0.308     0.308     0.308
emax            0.341     0.341     0.341
imean           7.652     7.652     7.652
imin            7.009     7.009     7.009
imax            8.314     8.314     8.314
excite_mean     0.350     0.350     0.350
fracstop        1.000     1.000     1.000
cjmean          2.909     2.909     2.909

libcent 0       179.7     179.7     179.7
libamp  0        13.3      13.3      13.3
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       203.4     203.4     203.4
kozaiamp        179.9     179.9     179.9