Orbit Fit and Astrometric record for 15789

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: 15789     
# Created Mon Oct 23 01:36:15 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   99 observations of  103
# Arc:  15.12y
# First observation: 1993/09/17
#  Last observation: 2008/11/02
# Chi-squared of fit:   991.58 DOF:  192 RMS:  0.56
# Min/Max residuals:    -1.91    1.29
# Exact a, adot, b, bdot, g, gdot:
  2.106703E-05  3.471220E-02  3.959473E-06  3.124085E-03  3.041304E-02  4.275061E-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
    0.383789   -1.115336    0.059315    0.006758   -1.004190  2449248.485197
# Heliocentric elements and errors
Epoch:              2449248.5000  =  1993/09/18
Mean Anomaly:           33.51110 +/-     0.000
Argument of Peri:      316.30089 +/-     0.000
Long of Asc Node:      354.64712 +/-     0.000
Inclination:             5.16267 +/-     0.000
Eccentricity:         0.18522105 +/-    0.0000
Semi-Major Axis:     39.44885227 +/-    0.0000
Time of Perihelion: 2440824.1547 +/-       0.0
Perihelion:          32.14209454 +/-    0.0000
Aphelion:            46.75561001 +/-    0.0000
Period (y)              247.7763 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.87498002 +/-    0.0000
Ecliptic Y           -0.72392389 +/-    0.0000
Ecliptic Z            0.22040190 +/-    0.0000
Ecliptic XDOT         0.00044744 +/-    0.0000
Ecliptic YDOT         0.00311201 +/-    0.0000
Ecliptic ZDOT         0.00028372 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.88335885 +/-    0.0000
Geocenter to KBO     32.88059759 +/-    0.0000
# Hcoef:  6.95

The following table shows the complete astrometric record for 15789. 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 (15789) followed by the observatory code and reference code for the source of the astrometry.

1993 09  17.9845   23 55 17.77   -00 05 29.4         15789     950  C22662      
1993 09  18.1750   23 55 16.72   -00 05 36.0         15789     950  C22662      
1993 09  18.9667   23 55 12.45   -00 06 02.2         15789     950  C22662      
1993 09  19.9487   23 55 07.22   -00 06 34.4         15789     950  C22662      
1993 09  20.0330   23 55 06.64   -00 06 37.5         15789     950  C22662      
1993 09  20.1416   23 55 06.16   -00 06 40.8         15789     950  C22662      
1993 09  20.9996   23 55 01.34   -00 07 10.1   21.6R 15789     950  C22662      
1993 09  21.0351   23 55 01.32   -00 07 10.8         15789     950  C22662      
1993 09  21.1858   23 55 00.48   -00 07 15.8   21.8R 15789     950  C22662      
1993 09  22.9830   23 54 50.73   -00 08 15.5   21.5R 15789     950  C22662      
1993 09  23.1257   23 54 49.95   -00 08 20.5   22.1R 15789     950  C22662      
1993 09  23.55521  23 54 47.55   -00 08 34.4         15789     413  C22630      
1993 09  23.62404  23 54 47.16   -00 08 37.1         15789     413  C22630      
1993 11  19.28252  23 50 47.10   -00 33 12.1         15789     568  C23389      
1993 11  19.41519  23 50 46.82   -00 33 13.5         15789     568  C23389      
1993 11  20.29771  23 50 44.98   -00 33 24.5         15789     568  C23389      
1993 11  20.42730  23 50 44.71   -00 33 26.1         15789     568  C23389      
1994 08  09.37242  00 05 21.99   +01 10 04.4         15789     809  C28036      
1994 08  09.43030  00 05 21.78   +01 10 03.2         15789     809  C28036      
1994 08  10.17181  00 05 19.19   +01 09 48.2         15789     809  C28036      
1994 08  10.20810  00 05 19.05   +01 09 47.3         15789     809  C28036      
1994 08  10.23185  00 05 18.96   +01 09 46.6         15789     809  C28036      
1994 08  10.24909  00 05 18.90   +01 09 46.5         15789     809  C28036      
1994 08  15.05118  00 05 01.01   +01 08 03.2         15789     950  C23846      
1994 08  15.12317  00 05 00.74   +01 08 01.5         15789     950  C23846      
1994 08  15.18615  00 05 00.45   +01 08 00.1         15789     950  C23846      
1994 08  16.12649  00 04 56.75   +01 07 38.4         15789     950  C23846      
1994 08  16.17877  00 04 56.56   +01 07 37.4         15789     950  C23846      
1994 11  07.9290   23 58 13.67   +00 26 29.4   22.0R 15789     950  C24367      
1994 11  07.9765   23 58 13.50   +00 26 28.4         15789     950  C24367      
1994 11  08.0173   23 58 13.38   +00 26 27.6         15789     950  C24367      
1994 12  28.10139  23 57 30.93   +00 22 29.9         15789     675  C24640      
1995 01  03.29583  23 57 44.70   +00 24 03.0         15789     568  C24632      
1995 01  04.28333  23 57 47.30   +00 24 20.8         15789     568  C24632      
1995 07  28.53815  00 12 47.01   +02 09 01.9   22.6V 15789     568  C25482      
1995 07  28.61696  00 12 46.81   +02 09 01.0         15789     568  C25482      
1995 08  26.05203  00 11 08.78   +01 59 45.1         15789     950  C25622      
1995 08  26.12814  00 11 08.42   +01 59 43.4         15789     950  C25622      
1995 09  24.21934  00 08 41.14   +01 44 52.7         15789     709  C25707      
1995 09  24.26378  00 08 41.02   +01 44 49.8         15789     709  C25707      
1995 09  24.28603  00 08 40.57   +01 44 48.6         15789     709  C25707      
1995 09  26.24748  00 08 30.26   +01 43 44.5         15789     709  C25707      
1995 09  26.26969  00 08 30.02   +01 43 42.1         15789     709  C25707      
1995 09  26.29193  00 08 30.08   +01 43 45.5         15789     709  C25707      
1995 09  26.31417  00 08 29.78   +01 43 41.4         15789     709  C25707      
1995 09  26.33642  00 08 29.64   +01 43 39.9         15789     709  C25707      
1995 09  26.35867  00 08 29.71   +01 43 42.3         15789     709  C25707      
1995 09  26.38090  00 08 29.40   +01 43 41.3         15789     709  C25707      
1995 10  21.51053  00 06 19.81   +01 30 16.6         15789     413  C25787      
1995 10  21.52310  00 06 19.73   +01 30 16.2         15789     413  C25787      
1995 10  21.53282  00 06 19.72   +01 30 15.8         15789     413  C25787      
1995 10  21.53958  00 06 19.69   +01 30 15.6         15789     413  C25787      
1995 10  21.54922  00 06 19.63   +01 30 15.5         15789     413  C25787      
1995 10  22.47424  00 06 15.31   +01 29 48.8         15789     568  C26491      
1995 10  22.54072  00 06 15.01   +01 29 46.7         15789     568  C26491      
1996 07  13.94056  00 19 52.54   +03 05 19.4   23.0V 15789     115  C29978      
1996 07  14.01441  00 19 52.50   +03 05 19.3         15789     115  C29978      
1996 07  14.95207  00 19 51.81   +03 05 18.2         15789     115  C29978      
1996 07  14.96080  00 19 51.79   +03 05 18.2         15789     115  C29978      
1996 07  14.96898  00 19 51.79   +03 05 18.2         15789     115  C29978      
1996 07  14.97710  00 19 51.78   +03 05 18.0         15789     115  C29978      
1996 09  05.24270  00 17 08.65   +02 50 22.9   21.7R 15789     675  C27800      
1996 09  05.27641  00 17 08.50   +02 50 21.9         15789     675  C27800      
1996 09  05.31155  00 17 08.33   +02 50 20.9         15789     675  C27800      
1996 09  06.03933  00 17 04.67   +02 49 59.7         15789     950  C28270      
1996 09  06.17791  00 17 03.98   +02 49 55.6         15789     950  C28270      
1996 09  06.99128  00 16 59.96   +02 49 31.3         15789     950  C28270      
1996 09  07.15273  00 16 59.15   +02 49 26.6         15789     950  C28270      
1996 09  10.37928  00 16 42.85   +02 47 48.3         15789     711  C27868      
1996 09  10.38749  00 16 42.77   +02 47 48.0         15789     711  C27868      
1996 09  10.39562  00 16 42.76   +02 47 47.9         15789     711  C27868      
1996 09  10.40431  00 16 42.70   +02 47 47.4         15789     711  C27868      
1996 09  10.45534  00 16 42.41   +02 47 46.2         15789     711  C27868      
1996 09  10.46314  00 16 42.40   +02 47 45.6         15789     711  C27868      
1996 09  12.5093   00 16 31.89   +02 46 42.8         15789     568  C27786      
1996 09  12.5325   00 16 31.76   +02 46 42.1         15789     568  C27786      
1996 09  15.98970  00 16 13.68   +02 44 52.2         15789     950  C28050      
1996 09  16.02257  00 16 13.51   +02 44 50.8         15789     950  C28050      
1996 09  16.05493  00 16 13.33   +02 44 50.3         15789     950  C28050      
1997 09  24.39483  00 22 20.45   +03 35 49.9         15789     568  Ca0006      
1997 09  24.42795  00 22 20.25   +03 35 48.9         15789     568  Ca0006      
1997 10  24.95776  00 19 42.50   +03 19 31.0         15789     950  Ca0097      
1997 10  24.99565  00 19 42.31   +03 19 29.6         15789     950  Ca0097      
1997 10  25.06510  00 19 41.98   +03 19 28.0         15789     950  Ca0097      
1998 10  18.25251  00 27 03.21   +04 17 46.7         15789     705  Ca2529      
1998 10  18.29146  00 27 03.04   +04 17 45.5         15789     705  Ca2529      
1998 10  21.19081  00 26 48.55   +04 16 15.8   21.8R 15789     807  Ch2475      
1998 10  21.23653  00 26 48.35   +04 16 14.0         15789     807  Ch2475      
1999 11  09.20372  00 32 07.56   +05 01 17.9         15789     696  Ca7249      
1999 11  09.25003  00 32 07.32   +05 01 17.1   22.1  15789     696  Ca7249      
1999 11  09.29716  00 32 07.14   +05 01 15.5         15789     696  Ca7249      
1999 11  10.09328  00 32 04.02   +05 00 56.2         15789     696  Ca7249      
1999 11  10.14031  00 32 03.84   +05 00 54.3         15789     696  Ca7249      
2008 10  23.37246  01 32 02.20   +12 35 34.0   22.3r 15789     695  C~0gPm      
2008 10  23.42408  01 32 01.92   +12 35 32.5   22.4r 15789     695  C~0gPm      
2008 10  29.387404 01 31 30.49   +12 32 33.9         15789     645  C~1bXW      
2008 10  29.388234 01 31 30.48   +12 32 33.9         15789     645  C~1bXW      
2008 10  29.390721 01 31 30.46   +12 32 33.8         15789     645  C~1bXW      
2008 11  02.374006 01 31 09.87   +12 30 35.8   22.9V 15789     645  C~1bXW      
2008 11  02.374835 01 31 09.86   +12 30 35.8   22.0V 15789     645  C~1bXW      
2008 11  02.377323 01 31 09.85   +12 30 35.7   23.4V 15789     645  C~1bXW      
2009 09  18.42128  01 41 22.83   +13 35 38.0   22.8R 15789     688  C~09h6      
2009 09  18.46699  01 41 22.65   +13 35 36.9         15789     688  C~09h6      

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    -0.19       0.00    -0.86
  2   0.0005      0.00    -0.34       0.00    -0.93
  3   0.0027      0.00    -0.33       0.00    -0.79
  4   0.0054      0.00     1.07       0.00    -0.28
  5   0.0056      0.00    -0.65       0.00    -0.57
  6   0.0059      0.00     1.13       0.00    -0.25
  7   0.0083      0.00    -1.55       0.00    -0.94
  8   0.0084      0.00     1.09       0.00    -0.46
  9   0.0088      0.00     0.95       0.00    -0.43
 10   0.0137      0.00     0.66       0.00    -0.18
 11   0.0141      0.00     0.76       0.00    -0.42
 12   0.0153      0.00    -0.47       0.00    -0.27
 13   0.0154      0.00    -0.62       0.00    -0.67
 14   0.1706      0.00     0.41       0.00     0.35
 15   0.1709      0.00     0.61       0.00     0.62
 16   0.1733      0.00     0.27       0.00     0.46
 17   0.1737      0.00     0.30       0.00     0.41
 18   0.8909      0.00     0.52       0.00    -0.23
 19   0.8910      0.00     0.46       0.00    -0.28
 20   0.8931      0.00     0.32       0.00    -0.31
 21   0.8932      0.00     0.19       0.00    -0.47
 22   0.8932      0.00     0.13       0.00    -0.69
 23   0.8933      0.00     0.17       0.00    -0.44
 24   0.9064      0.00     0.30       0.00     0.40
 25   0.9066      0.00     0.56       0.00     0.34
 26   0.9068      0.00    -0.00       0.00     0.38
 27   0.9094      0.00     0.09       0.00     0.40
 28   0.9095      0.00     0.44       0.00     0.62
 29   1.1388      0.00    -0.03       0.00     1.01
 30   1.1389      0.00    -0.11       0.00     1.00
 31   1.1390      0.00     0.20       0.00     1.05
 32   1.2762      0.00    -0.34       0.00     0.73
 33   1.2931      0.00    -0.76       0.00    -0.17
 34   1.2958      0.00    -0.57       0.00     0.14
 35   1.8578      0.00    -0.45       0.00     0.20
 36   1.8580      0.00    -0.66       0.00     0.22
 37   1.9358      0.00    -0.68       0.00    -0.08
 38   1.9361      0.00    -0.87       0.00     0.23
 39   2.0157      0.00     0.32       0.00     0.68
 40   2.0158      0.00 (   2.18)      0.00 (  -0.75)
 41   2.0159      0.00 (  -2.74)      0.00 (  -1.21)
 42   2.0213      0.00     1.29       0.00    -0.25
 43   2.0213      0.00    -0.48       0.00    -1.91
 44   2.0214      0.00 (   2.25)      0.00 (   2.22)
 45   2.0214      0.00    -0.42       0.00    -1.14
 46   2.0215      0.00    -0.68       0.00    -1.90
 47   2.0216      0.00 (   2.19)      0.00 (   1.24)
 48   2.0216      0.00    -0.63       0.00     0.98
 49   2.0904      0.00    -0.20       0.00     0.28
 50   2.0905      0.00    -0.49       0.00     0.25
 51   2.0905      0.00     0.06       0.00     0.14
 52   2.0905      0.00     0.10       0.00     0.14
 53   2.0905      0.00    -0.11       0.00     0.32
 54   2.0931      0.00     0.27       0.00     0.95
 55   2.0932      0.00     0.48       0.00     0.79
 56   2.8199      0.00     0.50       0.00    -0.18
 57   2.8201      0.00     0.73       0.00    -0.20
 58   2.8226      0.00     0.86       0.00     0.04
 59   2.8227      0.00     0.68       0.00     0.05
 60   2.8227      0.00     0.78       0.00     0.07
 61   2.8227      0.00     0.74       0.00    -0.12
 62   2.9658      0.00     0.25       0.00     0.27
 63   2.9659      0.00     0.52       0.00     0.26
 64   2.9660      0.00     0.60       0.00     0.29
 65   2.9680      0.00    -0.46       0.00     0.50
 66   2.9684      0.00    -0.33       0.00     0.50
 67   2.9706      0.00    -0.26       0.00     0.37
 68   2.9710      0.00    -0.10       0.00     0.49
 69   2.9799      0.00    -0.11       0.00     0.02
 70   2.9799      0.00    -0.67       0.00    -0.03
 71   2.9799      0.00    -0.18       0.00     0.12
 72   2.9799      0.00    -0.41       0.00    -0.11
 73   2.9801      0.00    -0.79       0.00     0.26
 74   2.9801      0.00    -0.33       0.00    -0.10
 75   2.9857      0.00    -0.20       0.00     0.48
 76   2.9858      0.00    -0.32       0.00     0.50
 77   2.9952      0.00    -0.96       0.00    -0.16
 78   2.9953      0.00    -0.88       0.00    -0.51
 79   2.9954      0.00    -0.97       0.00     0.02
 80   4.0176      0.00    -0.04       0.00     0.29
 81   4.0176      0.00    -0.33       0.00     0.36
 82   4.1012      0.00     0.96       0.00    -0.33
 83   4.1013      0.00     0.82       0.00    -0.62
 84   4.1015      0.00     0.83       0.00    -0.17
 85   5.0822      0.00    -0.27       0.00     0.32
 86   5.0823      0.00     0.19       0.00     0.35
 87   5.0902      0.00     0.34       0.00     0.89
 88   5.0904      0.00     0.79       0.00     0.51
 89   6.1416      0.00    -0.05       0.00    -0.01
 90   6.1417      0.00    -0.83       0.00     0.37
 91   6.1419      0.00    -0.66       0.00    -0.03
 92   6.1440      0.00    -0.63       0.00     0.80
 93   6.1442      0.00    -0.51       0.00     0.08
 94  15.0976      0.00    -0.11       0.00     0.31
 95  15.0977      0.00    -0.14       0.00     0.36
 96  15.1140      0.00     0.60       0.00    -0.43
 97  15.1140      0.00     0.52       0.00    -0.40
 98  15.1140      0.00     0.41       0.00    -0.43
 99  15.1250      0.00     0.32       0.00    -0.29
100  15.1250      0.00     0.24       0.00    -0.26
101  15.1250      0.00     0.28       0.00    -0.29
102  16.0012      0.00    -0.43       0.00     0.03
103  16.0013      0.00    -0.06       0.00    -0.13

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.

15789    quality flag:3

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

axisobj        39.860    39.860    39.860
ecceobj         0.189     0.189     0.189
incobj          5.147     5.147     5.147
qmin           31.496    31.496    31.498
qmax           48.005    48.014    47.991
amean          39.456    39.456    39.456
amin           39.028    39.027    39.028
amax           39.963    39.963    39.954
emean           0.184     0.184     0.184
emin            0.167     0.167     0.167
emax            0.202     0.202     0.202
imean           5.889     5.889     5.889
imin            5.325     5.324     5.326
imax            6.520     6.523     6.521
excite_mean     0.211     0.211     0.211
fracstop        1.000     1.000     1.000
cjmean          3.001     3.001     3.001

libcent 0       179.9     179.6     180.0
libamp  0        78.6      79.2      79.2
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       180.7     180.7     180.7
kozaiamp        180.0     180.0     180.0