Orbit Fit and Astrometric record for 437915

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: 437915    
# Created Mon Oct 23 01:36:47 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   30 observations of   30
# Arc:  12.15y
# First observation: 2002/04/07
#  Last observation: 2014/05/30
# Chi-squared of fit:    96.36 DOF:   54 RMS:  0.32
# Min/Max residuals:    -0.88    0.72
# Exact a, adot, b, bdot, g, gdot:
  1.357613E-05  1.669534E-02 -1.521893E-06 -1.911887E-03  2.031564E-02  8.675156E-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
   -0.836625 -150.460483    0.210415   -0.014371   -0.980921  2452371.672563
# Heliocentric elements and errors
Epoch:              2452372.5000  =  2002/04/08
Mean Anomaly:          155.84368 +/-     0.000
Argument of Peri:       25.71495 +/-     0.000
Long of Asc Node:       22.17118 +/-     0.000
Inclination:             6.58684 +/-     0.000
Eccentricity:         0.13901371 +/-    0.0000
Semi-Major Axis:     44.44374150 +/-    0.0000
Time of Perihelion: 2405523.4229 +/-       0.0
Perihelion:          38.26545203 +/-    0.0000
Aphelion:            50.62203097 +/-    0.0000
Period (y)              296.2949 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -43.77655045 +/-    0.0000
Ecliptic Y          -24.56126719 +/-    0.0000
Ecliptic Z           -0.71881326 +/-    0.0000
Ecliptic XDOT         0.00100249 +/-    0.0000
Ecliptic YDOT        -0.00201465 +/-    0.0000
Ecliptic ZDOT        -0.00025912 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   50.20115166 +/-    0.0000
Geocenter to KBO     49.22315023 +/-    0.0000
# Hcoef:  6.05

The following table shows the complete astrometric record for 437915. 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 (437915) followed by the observatory code and reference code for the source of the astrometry.

2002 04  07.17182  13 48 40.55   -12 05 32.7   21.4R 437915    807  Cf5154      
2002 04  07.23610  13 48 40.31   -12 05 31.6         437915    807  Cf5154      
2002 04  08.20735  13 48 36.51   -12 05 11.5         437915    807  Cf5154      
2002 04  08.97994  13 48 33.52   -12 04 55.6         437915    246  C~05Ct      
2002 04  11.30825  13 48 24.30   -12 04 08.3   21.8R 437915    695  Cg5851      
2002 04  11.39157  13 48 23.95   -12 04 06.4         437915    695  Cg5851      
2002 04  11.39375  13 48 23.96   -12 04 06.3   21.8R 437915    568  Cf5154      
2002 04  11.47633  13 48 23.63   -12 04 04.7         437915    568  Cf5154      
2002 06  03.24289  13 45 12.94   -11 47 05.0         437915    675  Cf8972      
2002 06  03.25451  13 45 12.92   -11 47 04.7   23.3R 437915    675  Cf8972      
2002 06  03.31614  13 45 12.76   -11 47 03.7   23.6R 437915    675  Cf8972      
2002 06  16.15825  13 44 43.16   -11 44 21.5   22.9R 437915    695  Cf8972      
2002 06  17.15531  13 44 41.26   -11 44 10.9   22.3R 437915    695  Cf8972      
2002 06  17.21782  13 44 41.14   -11 44 10.2   22.6R 437915    695  Cf8972      
2003 03  07.49840  13 53 55.58   -12 40 33.4   22.9R 437915    662  Ch8264      
2003 03  07.53733  13 53 55.47   -12 40 33.0         437915    662  Ch8264      
2003 04  29.27157  13 50 43.83   -12 24 22.2   22.8R 437915    688  Ch8264      
2003 04  29.34890  13 50 43.49   -12 24 20.5         437915    688  Ch8264      
2005 04  10.36854  13 58 59.76   -13 22 54.4   22.3R 437915    695  Cn3092      
2005 04  11.33662  13 58 55.97   -13 22 35.4         437915    695  Cn3092      
2005 04  11.42230  13 58 55.62   -13 22 34.1         437915    695  Cn3092      
2008 04  23.30657  14 08 44.96   -14 35 18.7   23.8R 437915    250  S~06AU      
2008 04  23.31282  14 08 44.93   -14 35 18.5         437915    250  S~06AU      
2008 04  23.36768  14 08 44.71   -14 35 17.5         437915    250  S~06AU      
2008 04  23.37393  14 08 44.69   -14 35 17.3         437915    250  S~06AU      
2014 04  23.25017  14 30 14.35   -17 02 28.9         437915    W84  C~1Tia      
2014 04  24.27195  14 30 10.17   -17 02 10.3   24.2V 437915    W84  C~1Tia      
2014 04  25.28852  14 30 06.01   -17 01 52.0         437915    W84  C~1Tia      
2014 05  30.21676  14 27 48.65   -16 51 13.6   22.8R 437915    695  C~1LJ7      
2014 05  30.33705  14 27 48.23   -16 51 11.6         437915    695  C~1LJ7      

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     0.72
  2   0.0002      0.00     0.16       0.00    -0.16
  3   0.0028      0.00     0.08       0.00     0.22
  4   0.0050      0.00     0.71       0.00     0.58
  5   0.0113      0.00     0.17       0.00    -0.00
  6   0.0116      0.00    -0.05       0.00     0.17
  7   0.0116      0.00     0.11       0.00     0.20
  8   0.0118      0.00     0.15       0.00     0.09
  9   0.1563      0.00    -0.31       0.00    -0.16
 10   0.1563      0.00    -0.14       0.00    -0.03
 11   0.1565      0.00    -0.01       0.00     0.06
 12   0.1916      0.00     0.41       0.00    -0.18
 13   0.1943      0.00     0.01       0.00     0.12
 14   0.1945      0.00    -0.00       0.00     0.18
 15   0.9153      0.00    -0.41       0.00    -0.25
 16   0.9154      0.00    -0.45       0.00    -0.34
 17   1.0598      0.00     0.08       0.00    -0.39
 18   1.0600      0.00    -0.37       0.00    -0.30
 19   3.0094      0.00     0.01       0.00    -0.42
 20   3.0121      0.00     0.32       0.00    -0.49
 21   3.0123      0.00     0.22       0.00    -0.88
 22   6.0455      0.00     0.22       0.00     0.55
 23   6.0456      0.00     0.15       0.00     0.62
 24   6.0457      0.00     0.18       0.00     0.54
 25   6.0457      0.00     0.26       0.00     0.61
 26  12.0440      0.00     0.15       0.00    -0.29
 27  12.0468      0.00     0.00       0.00    -0.06
 28  12.0496      0.00    -0.03       0.00    -0.15
 29  12.1452      0.00    -0.10       0.00    -0.06
 30  12.1456      0.00     0.02       0.00    -0.12

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.

437915    quality flag:3

Type:        9:5EEEE   9:5EEEE   9:5EEEE

axisobj        44.244    44.244    44.244
ecceobj         0.143     0.143     0.143
incobj          6.610     6.610     6.610
qmin           37.774    37.774    37.774
qmax           51.733    51.733    51.732
amean          44.555    44.555    44.555
amin           44.163    44.163    44.163
amax           44.989    44.989    44.989
emean           0.137     0.137     0.137
emin            0.123     0.123     0.123
emax            0.150     0.150     0.150
imean           6.160     6.160     6.160
imin            5.319     5.320     5.319
imax            7.046     7.046     7.046
excite_mean     0.174     0.174     0.174
fracstop        1.000     1.000     1.000
cjmean          3.071     3.071     3.071

libcent 0       178.6     178.6     178.6
libamp  0       100.8     100.8     100.8
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       196.9     196.9     196.9
kozaiamp        180.0     180.0     180.0