Orbit Fit and Astrometric record for 19255

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: 19255     
# Created Tue Oct 17 01:36:16 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   72 observations of   75
# Arc:  21.00y
# First observation: 1994/11/08
#  Last observation: 2015/11/08
# Chi-squared of fit:  1198.94 DOF:  138 RMS:  0.72
# Min/Max residuals:    -2.02    1.76
# Exact a, adot, b, bdot, g, gdot:
  1.361044E-05  2.210023E-02 -2.456946E-06  5.645736E-04  2.344929E-02 -4.634293E-04
# 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
   -0.280720   62.109834    0.279357   -0.004691   -0.955621  2449664.569508
# Heliocentric elements and errors
Epoch:              2449664.5000  =  1994/11/08
Mean Anomaly:          231.06029 +/-     0.000
Argument of Peri:      121.38077 +/-     0.000
Long of Asc Node:       72.37621 +/-     0.000
Inclination:             1.48786 +/-     0.000
Eccentricity:         0.03557183 +/-    0.0000
Semi-Major Axis:     42.61140089 +/-    0.0000
Time of Perihelion: 2486053.6004 +/-       0.0
Perihelion:          41.09563520 +/-    0.0000
Aphelion:            44.12716658 +/-    0.0000
Period (y)              278.1614 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.64228938 +/-    0.0000
Ecliptic Y           38.39828893 +/-    0.0000
Ecliptic Z           -0.20903141 +/-    0.0000
Ecliptic XDOT        -0.00229936 +/-    0.0000
Ecliptic YDOT         0.00115735 +/-    0.0000
Ecliptic ZDOT         0.00006602 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.59561779 +/-    0.0000
Geocenter to KBO     42.64526187 +/-    0.0000
# Hcoef:  6.94

The following table shows the complete astrometric record for 19255. 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 (19255) followed by the observatory code and reference code for the source of the astrometry.

1994 11  08.0688   04 00 19.40   +20 18 30.5         19255     950  C24710      
1994 11  08.1296   04 00 19.09   +20 18 29.8   22.3R 19255     950  C24710      
1994 11  08.1806   04 00 18.83   +20 18 29.0         19255     950  C24710      
1994 11  08.2324   04 00 18.61   +20 18 28.2         19255     950  C24710      
1995 01  31.8668   03 54 51.08   +20 03 15.7         19255     950  C24710      
1995 01  31.9325   03 54 50.99   +20 03 15.7         19255     950  C24710      
1995 01  31.9925   03 54 50.91   +20 03 15.3         19255     950  C24710      
1995 02  01.9005   03 54 50.01   +20 03 13.7         19255     950  C24710      
1995 02  01.9563   03 54 49.92   +20 03 13.1         19255     950  C24710      
1995 12  24.32604  04 01 53.09   +20 25 10.8         19255     568  C26491      
1995 12  24.35164  04 01 52.98   +20 25 10.5         19255     568  C26491      
1995 12  24.36920  04 01 52.89   +20 25 10.3         19255     568  C26491      
1995 12  25.30375  04 01 48.91   +20 24 59.7         19255     568  C26491      
1995 12  25.31872  04 01 48.86   +20 24 59.9         19255     568  C26491      
1995 12  25.33267  04 01 48.78   +20 24 59.7         19255     568  C26491      
1995 12  27.44830  04 01 39.96   +20 24 36.4         19255     568  C26491      
1995 12  27.46473  04 01 39.89   +20 24 36.2         19255     568  C26491      
1996 01  20.13985  04 00 22.71   +20 21 11.0         19255     711  C27069      
1996 01  20.14513  04 00 22.73   +20 21 09.4         19255     711  C27069      
1996 01  20.24095  04 00 22.62   +20 21 10.4         19255     711  C27069      
1996 01  20.25083  04 00 22.50   +20 21 07.6         19255     711  C27069      
1996 01  21.16967  04 00 20.36   +20 21 02.9         19255     711  C27069      
1996 01  21.17796  04 00 20.43   +20 21 05.1         19255     711  C27069      
1996 01  21.18587  04 00 20.30   +20 21 05.6         19255     675  C26659      
1996 01  21.22190  04 00 20.31   +20 21 03.1         19255     711  C27069      
1996 01  21.22985  04 00 20.32   +20 21 03.6         19255     711  C27069      
1996 01  21.25357  04 00 20.44   +20 21 01.9         19255     711  C27069      
1996 01  21.31547  04 00 20.06   +20 21 04.3         19255     711  C27069      
1996 01  22.11589  04 00 18.36   +20 20 58.8         19255     711  C27069      
1996 01  22.12419  04 00 18.28   +20 20 57.5         19255     711  C27069      
1996 01  22.13373  04 00 18.30   +20 20 58.4         19255     711  C27069      
1996 01  22.14389  04 00 18.47   +20 20 58.1         19255     711  C27069      
1996 01  22.19182  04 00 18.22   +20 20 58.6         19255     711  C27069      
1996 01  22.20000  04 00 18.10   +20 20 58.0         19255     711  C27069      
1996 01  22.20759  04 00 18.20   +20 20 57.5         19255     711  C27069      
1996 01  22.21525  04 00 18.20   +20 20 57.1         19255     711  C27069      
1996 01  22.25831  04 00 18.05   +20 20 57.5         19255     711  C27069      
1996 01  23.16530  04 00 16.13   +20 20 54.0         19255     711  C27069      
1996 01  23.17357  04 00 16.09   +20 20 52.9         19255     711  C27069      
1996 01  23.27290  04 00 16.04   +20 20 53.7         19255     711  C27069      
1996 01  24.10591  04 00 14.19   +20 20 48.8         19255     675  C26659      
1996 01  24.22181  04 00 13.99   +20 20 48.4         19255     675  C26659      
1996 11  12.17233  04 10 30.85   +20 50 17.0         19255     711  C28518      
1996 11  12.17996  04 10 30.87   +20 50 16.8         19255     711  C28518      
1996 11  12.24087  04 10 30.55   +20 50 15.4         19255     711  C28518      
1996 11  12.26545  04 10 30.46   +20 50 16.1         19255     711  C28518      
1996 11  12.31691  04 10 30.21   +20 50 14.9         19255     711  C28518      
1996 11  12.33470  04 10 30.07   +20 50 14.3         19255     711  C28518      
1996 11  12.34240  04 10 30.02   +20 50 14.4         19255     711  C28518      
1996 11  12.38673  04 10 29.83   +20 50 14.1         19255     711  C28518      
1996 11  12.39464  04 10 29.81   +20 50 13.4         19255     711  C28518      
1996 11  13.17554  04 10 25.99   +20 50 04.6         19255     711  C28518      
1996 11  13.20119  04 10 25.80   +20 50 04.2         19255     711  C28518      
1996 11  13.27767  04 10 25.43   +20 50 03.6         19255     711  C28518      
1996 11  13.28559  04 10 25.33   +20 50 02.6         19255     711  C28518      
1996 11  13.29362  04 10 25.45   +20 50 03.2         19255     711  C28518      
1996 11  13.34910  04 10 25.01   +20 50 02.1         19255     711  C28518      
1997 02  07.13425  04 05 06.56   +20 36 31.2         19255     697  C29057      
1997 02  08.14550  04 05 05.90   +20 36 30.6         19255     697  C29057      
1997 02  09.22130  04 05 05.32   +20 36 29.1         19255     697  C29057      
1997 10  26.04306  04 17 08.64   +21 08 57.9         19255     950  Ca0100      
1997 10  26.13632  04 17 08.23   +21 08 56.8         19255     950  Ca0100      
1997 10  26.20118  04 17 07.95   +21 08 56.1         19255     950  Ca0100      
1997 10  27.06154  04 17 04.44   +21 08 47.6         19255     950  Ca0100      
1997 10  27.10141  04 17 04.24   +21 08 47.3         19255     950  Ca0100      
2000 11  26.30740  04 30 49.85   +21 46 27.5   23.6R 19255     695  Cc2072      
2000 11  26.41091  04 30 49.32   +21 46 26.2   23.4R 19255     695  Cc2072      
2000 11  27.33604  04 30 44.61   +21 46 16.5   22.5R 19255     695  Cc2072      
2014 10  22.41143  05 50 53.46   +23 47 50.3   22.9R 19255     G37  C~1C0d      
2014 10  22.50326  05 50 53.25   +23 47 50.3         19255     G37  C~1C0d      
2015 11  08.38826  05 55 43.15   +23 50 45.9   22.9R 19255     G37  C~1dpk      
2015 11  08.50395  05 55 42.80   +23 50 45.6         19255     G37  C~1dpk      
2016 02  04.18638  05 48 51.96   +23 49 56.4   23.1R 19255     G37  C~1mAE      
2016 02  04.28035  05 48 51.64   +23 49 56.4         19255     G37  C~1mAE      
2016 02  04.33667  05 48 51.41   +23 49 56.2         19255     G37  C~1mAE      

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    -0.14       0.00    -0.06
  2   0.0002      0.00    -0.02       0.00     0.75
  3   0.0003      0.00    -0.22       0.00     0.64
  4   0.0004      0.00     0.23       0.00     0.55
  5   0.2322      0.00    -0.71       0.00    -0.34
  6   0.2323      0.00    -0.90       0.00    -0.16
  7   0.2325      0.00    -1.06       0.00    -0.39
  8   0.2350      0.00    -0.37       0.00     0.19
  9   0.2351      0.00    -0.82       0.00    -0.27
 10   1.1260      0.00    -0.13       0.00     0.23
 11   1.1260      0.00    -0.11       0.00     0.22
 12   1.1261      0.00    -0.32       0.00     0.22
 13   1.1286      0.00    -0.84       0.00     0.25
 14   1.1287      0.00    -0.62       0.00     0.62
 15   1.1287      0.00    -0.93       0.00     0.58
 16   1.1345      0.00    -1.67       0.00     0.86
 17   1.1346      0.00    -1.69       0.00     0.84
 18   1.1994      0.00    -0.52       0.00     0.70
 19   1.1994      0.00    -0.03       0.00    -0.87
 20   1.1996      0.00     1.76       0.00     0.72
 21   1.1997      0.00     0.31       0.00    -2.02
 22   1.2022      0.00    -0.43       0.00    -1.35
 23   1.2022      0.00     0.91       0.00     0.90
 24   1.2022      0.00    -0.81       0.00     1.46
 25   1.2023      0.00     0.63       0.00    -0.84
 26   1.2024      0.00     1.05       0.00    -0.29
 27   1.2024      0.00 (   3.67)      0.00 (  -1.85)
 28   1.2026      0.00     0.07       0.00     0.93
 29   1.2048      0.00     0.70       0.00    -0.12
 30   1.2048      0.00    -0.22       0.00    -1.37
 31   1.2048      0.00     0.40       0.00    -0.42
 32   1.2049      0.00 (   3.29)      0.00 (  -0.67)
 33   1.2050      0.00     1.14       0.00     0.10
 34   1.2050      0.00    -0.39       0.00    -0.45
 35   1.2050      0.00     1.36       0.00    -0.91
 36   1.2051      0.00     1.62       0.00    -1.26
 37   1.2052      0.00     0.79       0.00    -0.62
 38   1.2077      0.00     0.50       0.00     0.72
 39   1.2077      0.00     0.16       0.00    -0.33
 40   1.2080      0.00 (   2.56)      0.00 (   1.01)
 41   1.2102      0.00    -0.24       0.00     0.35
 42   1.2105      0.00     0.31       0.00     0.53
 43   2.0126      0.00     0.15       0.00     0.36
 44   2.0126      0.00     1.01       0.00     0.25
 45   2.0128      0.00     0.71       0.00    -0.40
 46   2.0129      0.00     1.19       0.00     0.60
 47   2.0130      0.00     1.25       0.00     0.04
 48   2.0130      0.00     0.47       0.00    -0.34
 49   2.0131      0.00     0.30       0.00    -0.15
 50   2.0132      0.00     0.73       0.00     0.11
 51   2.0132      0.00     1.02       0.00    -0.49
 52   2.0154      0.00     0.66       0.00     0.47
 53   2.0154      0.00    -0.29       0.00     0.38
 54   2.0156      0.00    -0.14       0.00     0.73
 55   2.0157      0.00    -1.05       0.00    -0.17
 56   2.0157      0.00     1.34       0.00     0.53
 57   2.0158      0.00    -1.12       0.00     0.12
 58   2.2507      0.00     0.69       0.00     0.13
 59   2.2535      0.00     0.53       0.00     0.69
 60   2.2564      0.00     0.59       0.00     0.13
 61   2.9650      0.00    -0.57       0.00    -0.78
 62   2.9653      0.00    -0.89       0.00    -0.98
 63   2.9655      0.00    -1.04       0.00    -1.03
 64   2.9678      0.00    -0.69       0.00    -1.00
 65   2.9679      0.00    -1.17       0.00    -0.91
 66   6.0513      0.00    -0.12       0.00     0.46
 67   6.0516      0.00    -0.03       0.00     0.26
 68   6.0541      0.00     0.09       0.00     0.30
 69  19.9544      0.00     0.12       0.00     0.00
 70  19.9546      0.00     0.23       0.00    -0.03
 71  21.0002      0.00     0.10       0.00     0.35
 72  21.0005      0.00     1.24       0.00     0.02
 73  21.2406      0.00    -0.27       0.00    -0.09
 74  21.2408      0.00    -0.28       0.00     0.02
 75  21.2410      0.00    -0.88       0.00    -0.10

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.

19255    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.093    43.093    43.093
ecceobj         0.029     0.029     0.029
incobj          1.485     1.485     1.485
qmin           40.504    40.506    40.496
qmax           45.406    45.396    45.408
amean          42.836    42.835    42.836
amin           42.509    42.512    42.508
amax           43.175    43.173    43.177
emean           0.029     0.029     0.030
emin            0.010     0.010     0.010
emax            0.052     0.052     0.052
imean           1.120     1.120     1.120
imin            0.523     0.523     0.523
imax            1.488     1.489     1.488
excite_mean     0.036     0.036     0.036
fracstop        1.000     1.000     1.000
cjmean          3.086     3.086     3.086

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
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       173.7     173.5     173.7
kozaiamp        180.0     180.0     180.0