Orbit Fit and Astrometric record for 118378

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: 118378    
# Created Sun Nov  1 01:06:51 2020
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   54 observations of   54
# Arc:  20.78y
# First observation: 1999/04/17
#  Last observation: 2020/01/26
# Chi-squared of fit:   121.95 DOF:  102 RMS:  0.27
# Min/Max residuals:    -0.93    0.92
# Exact a, adot, b, bdot, g, gdot:
  1.157731E-05  2.439402E-02 -2.823629E-07 -9.978708E-04  2.460862E-02 -2.533878E-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
    4.582693 -154.292419   -0.016285    0.080549   -1.007987  2451285.747113
# Heliocentric elements and errors
Epoch:              2451286.5000  =  1999/04/18
Mean Anomaly:          298.30403 +/-     0.000
Argument of Peri:      191.47361 +/-     0.000
Long of Asc Node:       87.87133 +/-     0.000
Inclination:             5.05601 +/-     0.000
Eccentricity:         0.11192994 +/-    0.0000
Semi-Major Axis:     43.48929567 +/-    0.0000
Time of Perihelion: 2469239.0562 +/-       0.0
Perihelion:          38.62154141 +/-    0.0000
Aphelion:            48.35704993 +/-    0.0000
Period (y)              286.8017 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -37.39262697 +/-    0.0000
Ecliptic Y          -18.02381740 +/-    0.0000
Ecliptic Z            3.24675350 +/-    0.0000
Ecliptic XDOT         0.00142002 +/-    0.0000
Ecliptic YDOT        -0.00231853 +/-    0.0000
Ecliptic ZDOT        -0.00013317 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.63668392 +/-    0.0000
Geocenter to KBO     40.63626839 +/-    0.0000
# Hcoef:  7.21

The following table shows the complete astrometric record for 118378. 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 (118378) followed by the observatory code and reference code for the source of the astrometry.

1999 04  17.24637  13 42 01.28   -05 39 49.6   23.1R 118378    695  Ca4930      
1999 04  17.33279  13 42 00.81   -05 39 46.9         118378    695  Ca4930      
1999 04  17.41962  13 42 00.45   -05 39 44.8         118378    695  Ca4930      
1999 05  06.92759  13 40 32.78   -05 31 55.4         118378    950  Ca4930      
1999 05  06.99642  13 40 32.49   -05 31 54.0         118378    950  Ca4930      
1999 06  05.91231  13 38 44.32   -05 23 48.1   23.0R 118378    950  Ca5574      
1999 06  05.96603  13 38 44.16   -05 23 47.2   22.9R 118378    950  Ca5574      
1999 06  06.02556  13 38 44.01   -05 23 46.8   23.2R 118378    950  Ca5574      
2000 03  31.56036  13 48 22.68   -06 20 04.0   23.6R 118378    568  Cb1943      
2000 03  31.58447  13 48 22.55   -06 20 03.4   23.6R 118378    568  Cb1943      
2000 04  02.57830  13 48 13.86   -06 19 11.3   23.7R 118378    568  Cb1943      
2000 04  02.60683  13 48 13.71   -06 19 10.5   23.5R 118378    568  Cb1943      
2001 03  24.42240  13 54 05.46   -06 56 25.0   23.0R 118378    695  Cc7487      
2001 03  24.49709  13 54 05.14   -06 56 23.2         118378    695  Cc7487      
2001 03  25.27529  13 54 02.00   -06 56 02.5   20.5  118378    304  Ce8605      
2001 03  25.30194  13 54 01.89   -06 56 01.9         118378    304  Ce8605      
2001 05  19.47444  13 49 58.16   -06 34 08.9   22.9R 118378    568  Ce6449      
2001 05  20.32061  13 49 54.86   -06 33 54.1         118378    568  Ce6449      
2001 05  20.41978  13 49 54.46   -06 33 52.1         118378    568  Ce6449      
2005 04  10.38084  14 14 06.73   -09 01 51.3   23.4R 118378    695  Cn3058      
2005 04  10.45780  14 14 06.38   -09 01 49.6         118378    695  Cn3058      
2005 04  11.34846  14 14 02.38   -09 01 28.0         118378    695  Cn3058      
2005 05  09.19573  14 11 52.58   -08 50 28.7   21.7R 118378    807  Cn5292      
2005 05  10.19076  14 11 48.05   -08 50 07.9         118378    807  Cn5292      
2005 05  10.27546  14 11 47.66   -08 50 06.1         118378    807  Cn5292      
2010 05  11.403009 14 39 13.093  -11 33 00.84  22.1G 118378    F51  C~42Ax      
2011 06  02.364010 14 43 11.270  -11 58 16.69  23.7G 118378    F51  C~42Ax      
2012 04  27.452017 14 51 36.007  -12 41 14.02  23.1G 118378    F51  C~42Ax      
2012 04  27.467003 14 51 35.921  -12 41 13.88  22.6G 118378    F51  C~42Ax      
2012 04  27.482054 14 51 35.841  -12 41 13.25  21.8G 118378    F51  C~42Ax      
2012 05  21.358528 14 49 40.243  -12 33 07.98  23.1G 118378    F51  C~42Ax      
2012 05  21.373056 14 49 40.171  -12 33 07.62  22.9G 118378    F51  C~42Ax      
2012 05  21.387581 14 49 40.096  -12 33 07.32  22.6G 118378    F51  C~42Ax      
2013 05  09.454178 14 56 21.625  -13 08 24.23  23.6G 118378    F51  C~42Ax      
2014 05  24.363084 15 00 56.397  -13 34 45.55  23.4G 118378    F51  C~42Ax      
2014 05  24.429788 15 00 56.072  -13 34 43.98  23.5G 118378    F51  C~42Ax      
2014 05  24.442406 15 00 56.011  -13 34 43.95  23.1G 118378    F51  C~42Ax      
2014 06  03.407025 15 00 10.434  -13 31 59.07  23.0G 118378    F51  C~42Ax      
2014 06  03.419744 15 00 10.411  -13 31 58.94  21.7G 118378    F51  C~42Ax      
2015 04  25.508059 15 09 08.340  -14 14 45.34  23.4G 118378    F51  C~42Ax      
2015 05  20.07008  15 07 07.34   -14 06 48.2         118378    W84  C~1Tyc      
2015 05  22.15734  15 06 57.15   -14 06 10.5   24.0V 118378    W84  C~1Tyc      
2015 05  24.07033  15 06 47.90   -14 05 36.6         118378    W84  C~1Tyc      
2017 04  27.514458 15 20 45.872  -15 13 46.42  23.0G 118378    F51  C~42Ax      
2017 05  18.367799 15 19 02.136  -15 07 23.09  24.5G 118378    F51  C~42Ax      
2017 07  16.297807 15 15 19.934  -14 56 36.50  23.2G 118378    F51  C~42Ax      
2018 06  18.346328 15 22 38.418  -15 29 12.86  23.7G 118378    F51  C~42Ax      
2018 07  11.320309 15 21 24.358  -15 26 14.96  23.8G 118378    F51  C~42Ax      
2018 07  12.283685 15 21 22.128  -15 26 11.01  23.1G 118378    F51  C~42Ax      
2019 07  01.345446 15 27 51.209  -15 56 13.13  23.2G 118378    F51  C~42Ax      
2019 07  01.357386 15 27 51.188  -15 56 13.30  23.9G 118378    F51  C~42Ax      
2019 07  01.369256 15 27 51.127  -15 56 13.08  23.5G 118378    F51  C~42Ax      
2019 07  01.381153 15 27 51.094  -15 56 13.02  23.4G 118378    F51  C~42Ax      
2020 01  26.656580 15 40 45.668  -16 49 54.65  22.8G 118378    F51  C~42Ax      

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     0.77       0.00    -0.37
  2   0.0002      0.00    -0.23       0.00     0.09
  3   0.0005      0.00     0.45       0.00    -0.05
  4   0.0539      0.00     0.16       0.00     0.10
  5   0.0541      0.00     0.32       0.00     0.01
  6   0.1360      0.00    -0.27       0.00    -0.07
  7   0.1361      0.00    -0.39       0.00     0.29
  8   0.1363      0.00    -0.13       0.00     0.11
  9   0.9564      0.00    -0.14       0.00    -0.19
 10   0.9564      0.00    -0.50       0.00    -0.23
 11   0.9619      0.00    -0.09       0.00    -0.35
 12   0.9620      0.00    -0.43       0.00    -0.30
 13   1.9361      0.00     0.28       0.00     0.02
 14   1.9363      0.00     0.08       0.00    -0.06
 15   1.9385      0.00     0.18       0.00     0.92
 16   1.9386      0.00     0.19       0.00     0.85
 17   2.0896      0.00     0.06       0.00     0.08
 18   2.0919      0.00     0.00       0.00    -0.15
 19   2.0922      0.00    -0.09       0.00     0.10
 20   5.9826      0.00    -0.10       0.00     0.00
 21   5.9828      0.00    -0.05       0.00    -0.19
 22   5.9852      0.00     0.35       0.00    -0.46
 23   6.0615      0.00    -0.01       0.00     0.29
 24   6.0642      0.00    -0.07       0.00    -0.28
 25   6.0644      0.00    -0.06       0.00    -0.29
 26  11.0668      0.00    -0.14       0.00     0.18
 27  12.1263      0.00     0.01       0.00    -0.03
 28  13.0300      0.00     0.27       0.00     0.00
 29  13.0300      0.00     0.09       0.00    -0.18
 30  13.0301      0.00     0.01       0.00     0.13
 31  13.0954      0.00     0.14       0.00    -0.08
 32  13.0955      0.00     0.09       0.00     0.01
 33  13.0955      0.00     0.01       0.00     0.04
 34  14.0622      0.00     0.05       0.00    -0.18
 35  15.1023      0.00     0.07       0.00    -0.16
 36  15.1025      0.00     0.03       0.00     0.22
 37  15.1025      0.00     0.03       0.00     0.03
 38  15.1298      0.00    -0.49       0.00    -0.22
 39  15.1298      0.00     0.01       0.00    -0.29
 40  16.0226      0.00     0.13       0.00     0.06
 41  16.0899      0.00    -0.37       0.00     0.27
 42  16.0956      0.00    -0.38       0.00     0.19
 43  16.1008      0.00    -0.47       0.00     0.10
 44  18.0295      0.00    -0.05       0.00     0.05
 45  18.0866      0.00    -0.11       0.00    -0.93
 46  18.2479      0.00     0.15       0.00     0.16
 47  19.1707      0.00     0.27       0.00     0.26
 48  19.2336      0.00     0.32       0.00    -0.09
 49  19.2362      0.00     0.05       0.00     0.29
 50  20.2056      0.00     0.01       0.00     0.23
 51  20.2056      0.00     0.30       0.00    -0.03
 52  20.2057      0.00    -0.02       0.00     0.09
 53  20.2057      0.00     0.09       0.00     0.06
 54  20.7787      0.00    -0.30       0.00    -0.04

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.

118378    quality flag:2

Type:         7:4EEE    7:4EEE CLASSICAL

axisobj        43.475    43.475    43.475
ecceobj         0.111     0.111     0.111
incobj          5.058     5.058     5.058
qmin           38.376    38.343    38.301
qmax           49.568    49.548    49.544
amean          43.726    43.726    43.734
amin           43.311    43.308    43.313
amax           44.176    44.176    44.176
emean           0.106     0.106     0.100
emin            0.091     0.091     0.076
emax            0.122     0.122     0.122
imean           3.227     3.227     3.219
imin            2.352     2.353     2.351
imax            4.122     4.172     4.125
excite_mean     0.120     0.121     0.115
fracstop        1.000     1.000     1.000
cjmean          3.081     3.081     3.082

libcent 0       182.4     177.6    -180.0
libamp  0       163.4     168.0    -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       180.2     181.9     186.3
kozaiamp        180.0     180.0     180.0