Orbit Fit and Astrometric record for 15788

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: 15788     
# Created Fri Dec 15 02:36:18 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   53 observations of   54
# Arc:  18.27y
# First observation: 1993/09/16
#  Last observation: 2011/12/24
# Chi-squared of fit:   901.79 DOF:  100 RMS:  0.73
# Min/Max residuals:    -2.09    2.15
# Exact a, adot, b, bdot, g, gdot:
  2.308710E-05  3.603405E-02  3.742478E-06  1.216848E-03  3.154614E-02 -1.026816E-02
# 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
    0.122263   -1.525818    0.069464    0.002172   -1.003740  2449247.471497
# Heliocentric elements and errors
Epoch:              2449246.5000  =  1993/09/16
Mean Anomaly:          316.96585 +/-     0.000
Argument of Peri:       79.42985 +/-     0.000
Long of Asc Node:      354.83381 +/-     0.000
Inclination:             1.93936 +/-     0.000
Eccentricity:         0.31819746 +/-    0.0000
Semi-Major Axis:     39.20311326 +/-    0.0000
Time of Perihelion: 2459963.9124 +/-       0.0
Perihelion:          26.72878217 +/-    0.0000
Aphelion:            51.67744435 +/-    0.0000
Period (y)              245.4647 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.68827098 +/-    0.0000
Ecliptic Y           -0.94526277 +/-    0.0000
Ecliptic Z            0.06778978 +/-    0.0000
Ecliptic XDOT        -0.00080407 +/-    0.0000
Ecliptic YDOT         0.00314516 +/-    0.0000
Ecliptic ZDOT         0.00010361 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.70216883 +/-    0.0000
Geocenter to KBO     31.69979490 +/-    0.0000
# Hcoef:  7.91

The following table shows the complete astrometric record for 15788. 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 (15788) followed by the observatory code and reference code for the source of the astrometry.

1993 09  16.9708   23 54 12.34   -00 29 40.9         15788     950  C22661      
1993 09  17.1034   23 54 11.49   -00 29 45.4         15788     950  C22661      
1993 09  18.0133   23 54 06.47   -00 30 16.7         15788     950  C22661      
1993 09  18.1502   23 54 05.77   -00 30 22.3         15788     950  C22661      
1993 09  18.9420   23 54 01.31   -00 30 48.1         15788     950  C22662      
1993 09  19.9982   23 53 55.46   -00 31 28.1         15788     950  C22662      
1993 09  20.9737   23 53 49.99   -00 32 02.3   22.7R 15788     950  C22662      
1993 09  22.9511   23 53 38.91   -00 33 12.8         15788     950  C22662      
1994 08  15.21803  00 04 29.62   +00 41 20.7         15788     950  C24082      
1994 08  16.20557  00 04 25.52   +00 40 55.1         15788     950  C24082      
1994 09  10.3866   00 02 22.47   +00 27 55.7   22. R 15788     568  A24037      
1994 09  10.4648   00 02 22.02   +00 27 52.4         15788     568  A24037      
1994 09  10.5128   00 02 21.76   +00 27 51.1         15788     568  A24037      
1994 09  10.5601   00 02 21.49   +00 27 49.4         15788     568  A24037      
1994 09  29.4085   00 00 35.99   +00 16 38.4         15788     568  A24037      
1994 09  29.4445   00 00 35.79   +00 16 37.2         15788     568  A24037      
1994 11  07.9130   23 57 25.83   -00 03 34.1         15788     950  C24367      
1994 11  07.9643   23 57 25.65   -00 03 35.7   23.0R 15788     950  C24367      
1994 11  08.0046   23 57 25.52   -00 03 36.4         15788     950  C24367      
1995 09  01.53975  00 10 52.20   +01 27 40.9         15788     568  C26491      
1995 10  23.4060   00 06 09.72   +00 57 44.4         15788     568  C26263      
1995 10  23.4391   00 06 09.57   +00 57 43.4         15788     568  C26263      
1996 09  05.24869  00 18 21.24   +02 20 59.7   22.8R 15788     675  C27800      
1996 09  05.28253  00 18 21.05   +02 20 58.5         15788     675  C27800      
1996 09  05.31763  00 18 20.82   +02 20 57.2         15788     675  C27800      
1996 09  06.05439  00 18 17.04   +02 20 33.7         15788     950  C28270      
1996 09  06.19277  00 18 16.32   +02 20 28.9         15788     950  C28270      
1996 09  08.09752  00 18 06.13   +02 19 25.4         15788     950  C28270      
1996 09  08.20000  00 18 05.61   +02 19 22.6         15788     950  C28270      
1996 09  10.36683  00 17 54.01   +02 18 09.4         15788     711  C27868      
1996 09  10.41750  00 17 53.72   +02 18 06.9         15788     711  C27868      
1996 09  10.44392  00 17 53.47   +02 18 06.0         15788     711  C27868      
1996 09  12.3958   00 17 42.89   +02 17 01.5         15788     568  C27786      
1996 09  12.4246   00 17 42.72   +02 16 56.2         15788     568  C27786      
1996 09  15.99801  00 17 22.82   +02 14 52.4         15788     950  C28050      
1996 09  16.03076  00 17 22.61   +02 14 51.5         15788     950  C28050      
1996 09  16.06340  00 17 22.42   +02 14 50.1         15788     950  C28050      
1997 10  24.97036  00 21 48.27   +02 48 43.8         15788     950  Ca0097      
1997 10  25.00628  00 21 48.07   +02 48 42.4         15788     950  Ca0097      
1997 10  25.07452  00 21 47.75   +02 48 40.2         15788     950  Ca0097      
1998 10  18.83843  00 30 33.80   +03 49 59.3   22.0R 15788     950  Ca2529      
1998 10  18.86559  00 30 33.65   +03 49 58.3         15788     950  Ca2529      
1999 11  10.10852  00 37 04.40   +04 36 41.6         15788     696  Ca7249      
1999 11  10.15524  00 37 04.19   +04 36 40.1         15788     696  Ca7249      
1999 11  10.20167  00 37 04.00   +04 36 39.2   23.1  15788     696  Ca7249      
1999 11  11.09028  00 37 00.10   +04 36 14.4   22.9  15788     696  Ca7249      
1999 11  11.13535  00 36 59.88   +04 36 13.2         15788     696  Ca7249      
2000 10  19.98079  00 47 23.37   +05 47 04.9   22.6R 15788     493  Cc6158      
2000 10  20.02759  00 47 23.10   +05 47 03.1   22.5R 15788     493  Cc6158      
2000 10  20.10255  00 47 22.66   +05 47 00.6   22. V 15788     493  Cc6158      
2008 10  22.24417  02 03 41.40   +13 53 35.9   23.4r 15788     695  C~0gPm      
2008 10  22.28152  02 03 41.16   +13 53 34.5   23.2r 15788     695  C~0gPm      
2011 12  24.11357  02 30 19.465  +16 20 39.74  22.2R 15788     688              
2011 12  24.19137  02 30 19.213  +16 20 38.43        15788     688              

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    -0.80
  2   0.0004      0.00    -2.09       0.00    -0.77
  3   0.0029      0.00    -1.31       0.00     0.26
  4   0.0032      0.00    -0.13       0.00    -0.47
  5   0.0054      0.00    -0.93       0.00     1.91
  6   0.0083      0.00     0.04       0.00    -0.48
  7   0.0110      0.00    -0.14       0.00     0.08
  8   0.0164      0.00    -0.37       0.00     0.04
  9   0.9096      0.00    -0.18       0.00     1.01
 10   0.9123      0.00    -0.86       0.00     0.79
 11   0.9813      0.00     2.15       0.00    -0.39
 12   0.9815      0.00     1.93       0.00    -0.98
 13   0.9816      0.00     2.04       0.00    -0.62
 14   0.9818      0.00     1.93       0.00    -0.68
 15   1.0334      0.00     1.66       0.00    -0.32
 16   1.0335      0.00     1.75       0.00    -0.23
 17   1.1415      0.00    -0.51       0.00     0.37
 18   1.1417      0.00    -0.44       0.00    -0.09
 19   1.1418      0.00    -0.22       0.00     0.11
 20   1.9564      0.00     0.61       0.00     0.41
 21   2.0984      0.00     0.92       0.00     0.49
 22   2.0985      0.00     1.14       0.00     0.53
 23   2.9686      0.00    -0.24       0.00    -0.14
 24   2.9687      0.00    -0.40       0.00    -0.23
 25   2.9688      0.00    -1.06       0.00    -0.38
 26   2.9708      0.00     0.13       0.00     0.31
 27   2.9712      0.00     0.46       0.00     0.08
 28   2.9764      0.00    -1.01       0.00     0.02
 29   2.9767      0.00    -0.44       0.00     0.67
 30   2.9826      0.00     0.73       0.00     0.95
 31   2.9827      0.00     0.58       0.00     0.19
 32   2.9828      0.00    -0.98       0.00     0.19
 33   2.9882      0.00 (   0.24)      0.00 (   2.89)
 34   2.9882      0.00     0.12       0.00    -1.41
 35   2.9980      0.00    -0.42       0.00     0.12
 36   2.9981      0.00    -0.77       0.00     0.38
 37   2.9982      0.00    -0.82       0.00     0.13
 38   4.1040      0.00     0.37       0.00     0.01
 39   4.1041      0.00     0.17       0.00    -0.22
 40   4.1043      0.00     0.67       0.00    -0.21
 41   5.0866      0.00    -0.39       0.00    -0.23
 42   5.0866      0.00    -0.35       0.00    -0.28
 43   6.1469      0.00    -0.06       0.00    -0.08
 44   6.1470      0.00    -0.05       0.00    -0.27
 45   6.1471      0.00     0.25       0.00     0.14
 46   6.1495      0.00    -0.14       0.00     0.12
 47   6.1497      0.00    -0.45       0.00     0.17
 48   7.0911      0.00    -0.02       0.00     0.56
 49   7.0912      0.00     0.05       0.00     0.44
 50   7.0914      0.00     0.03       0.00     0.64
 51  15.0973      0.00     0.16       0.00    -0.22
 52  15.0974      0.00     0.35       0.00    -0.35
 53  18.2673      0.00    -0.10       0.00    -0.32
 54  18.2675      0.00     0.42       0.00    -0.14

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.

15788    quality flag:3

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

axisobj        39.757    39.757    39.758
ecceobj         0.326     0.326     0.326
incobj          1.935     1.935     1.935
qmin           26.360    26.375    26.407
qmax           53.153    53.205    53.151
amean          39.454    39.455    39.454
amin           39.027    39.028    39.026
amax           39.975    40.023    40.011
emean           0.316     0.316     0.316
emin            0.303     0.303     0.303
emax            0.330     0.330     0.330
imean           3.119     3.117     3.119
imin            2.776     2.772     2.778
imax            3.511     3.511     3.511
excite_mean     0.321     0.321     0.321
fracstop        1.000     1.000     1.000
cjmean          2.932     2.932     2.932

libcent 0       180.1     179.3     180.0
libamp  0        60.2      61.5      61.5
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       193.0     192.5     192.7
kozaiamp        180.0     180.0     180.0