Orbit Fit and Astrometric record for 02FW36

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: 02FW36    
# Created Sat Oct 21 01:37:17 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   21
# Arc:  13.01y
# First observation: 2002/03/18
#  Last observation: 2015/03/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.000686   0.024420  -0.000003  -0.000098   0.023522   0.000000
# Chi-squared of fit:    43.93 DOF:   32 RMS:  0.27
# Min/Max residuals:    -0.83    0.54
# Exact a, adot, b, bdot, g, gdot:
  1.704315E-05  2.356460E-02 -1.118162E-07 -9.824235E-05  2.419082E-02 -5.593875E-04
# Covariance matrix:
  3.2499E-13 -1.4063E-13  4.6585E-15  1.0314E-16  5.8925E-13 -3.8046E-13
 -1.4063E-13  1.7117E-13 -1.0283E-15 -5.6752E-16 -1.6149E-13  5.2890E-13
  4.6585E-15 -1.0283E-15  1.1736E-13 -1.0604E-14  1.7702E-14 -2.2287E-15
  1.0314E-16 -5.6752E-16 -1.0604E-14  2.7123E-15 -9.0460E-16 -1.8685E-15
  5.8925E-13 -1.6149E-13  1.7702E-14 -9.0460E-16  2.1643E-12 -3.8681E-13
 -3.8046E-13  5.2890E-13 -2.2287E-15 -1.8685E-15 -3.8681E-13  1.6678E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.386909  153.177183   -0.413446    0.037660   -0.905328  2452351.694173
# Heliocentric elements and errors
Epoch:              2452350.5000  =  2002/03/17
Mean Anomaly:          330.51168 +/-     0.298
Argument of Peri:      127.23355 +/-     0.313
Long of Asc Node:       57.28885 +/-     0.003
Inclination:             2.35036 +/-     0.000
Eccentricity:         0.02268279 +/-    0.0002
Semi-Major Axis:     43.09234596 +/-    0.0112
Time of Perihelion: 2460813.9251 +/-      85.5
Perihelion:          42.11489144 +/-    0.0130
Aphelion:            44.06980048 +/-    0.0134
Period (y)              282.8840 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -37.85287894 +/-    0.0022
Ecliptic Y           18.68169468 +/-    0.0011
Ecliptic Z            1.72162593 +/-    0.0001
Ecliptic XDOT        -0.00115581 +/-    0.0000
Ecliptic YDOT        -0.00240949 +/-    0.0000
Ecliptic ZDOT        -0.00001353 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.24701358 +/-    0.0021
Geocenter to KBO     41.33799133 +/-    0.0025
# Hcoef:  6.76

The following table shows the complete astrometric record for 02FW36. 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 (02FW36) followed by the observatory code and reference code for the source of the astrometry.

2002 03  18.19343  10 23 58.81   +12 33 53.6   22.4R 02FW36    695  Cf5084      
2002 03  18.25235  10 23 58.58   +12 33 54.9         02FW36    695  Cf5084      
2002 04  06.02137  10 22 47.81   +12 39 59.8   22.6R 02FW36    807  Ch1599      
2002 04  06.11054  10 22 47.44   +12 40 01.4         02FW36    807  Ch1599      
2002 04  08.99446  10 22 38.36   +12 40 45.1   21.5R 02FW36    807  Cf5084      
2002 04  09.08322  10 22 38.08   +12 40 46.4         02FW36    807  Cf5084      
2002 04  10.30588  10 22 34.41   +12 41 03.7   22.2R 02FW36    568  Cf5084      
2002 04  10.39528  10 22 34.17   +12 41 05.0         02FW36    568  Cf5084      
2002 04  11.27493  10 22 31.62   +12 41 17.4         02FW36    568  Cf5084      
2003 03  06.22155  10 30 02.14   +11 58 51.0   22.5R 02FW36    662  Ci0083      
2003 03  06.32635  10 30 01.68   +11 58 52.6         02FW36    662  Ci0083      
2003 04  29.29964  10 26 57.96   +12 14 32.6   23.7R 02FW36    568  Ci0083      
2003 04  29.37322  10 26 57.80   +12 14 32.9         02FW36    568  Ci0083      
2003 04  30.29552  10 26 56.34   +12 14 38.0         02FW36    568  Ci0083      
2004 03  20.22310  10 34 05.37   +11 34 24.2   23.0R 02FW36    662  Ck2152      
2004 03  20.33223  10 34 04.90   +11 34 27.1         02FW36    662  Ck2152      
2013 03  12.17896  11 20 14.31   +06 43 23.3   23.0R 02FW36    695  C~0uct      
2013 03  12.23838  11 20 14.00   +06 43 24.9         02FW36    695  C~0uct      
2015 03  23.17789  11 29 28.49   +05 41 35.4   23.3R 02FW36    695  C~1Q3C      
2015 03  23.24208  11 29 28.20   +05 41 37.2         02FW36    695  C~1Q3C      
2015 03  23.30126  11 29 27.94   +05 41 38.8         02FW36    695  C~1Q3C      

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    -0.34       0.00     0.01
  2   0.0002     -3.61    -0.00      -0.01     0.10
  3   0.0515  -1101.33 (   1.06)    -36.23 (   0.64)
  4   0.0518  -1106.96    -0.02     -36.71     0.42
  5   0.0597  -1246.65    -0.11     -44.16     0.10
  6   0.0599  -1250.94    -0.15     -44.43     0.08
  7   0.0633  -1307.26    -0.13     -47.78     0.04
  8   0.0635  -1311.01     0.29     -47.84     0.26
  9   0.0659  -1350.28     0.36     -49.81     0.54
 10   0.9665   5726.89 (  -0.76)     -5.63 (   0.98)
 11   0.9668   5720.02     0.03      -6.63     0.09
 12   1.1146   2867.40     0.29    -122.96    -0.33
 13   1.1148   2865.11    -0.16    -123.54    -0.64
 14   1.1173   2843.32    -0.35    -126.64    -0.83
 15   2.0069   9593.23     0.27     -44.36    -0.16
 16   2.0072   9585.73     0.08     -44.24     0.17
 17  10.9842  55419.47     0.12    -214.41     0.12
 18  10.9844  55414.25    -0.37    -214.81    -0.19
 19  13.0130  65253.08     0.03    -271.93     0.04
 20  13.0131  65247.92     0.01    -272.05     0.06
 21  13.0133  65243.31     0.13    -272.16     0.08

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.

02FW36    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        42.793    42.826    42.760
ecceobj         0.017     0.017     0.016
incobj          2.351     2.351     2.351
qmin           41.170    41.182    41.157
qmax           44.884    44.906    44.842
amean          42.937    42.970    42.904
amin           42.615    42.644    42.572
amax           43.261    43.311    43.239
emean           0.018     0.019     0.018
emin            0.001     0.001     0.000
emax            0.038     0.038     0.037
imean           1.131     1.132     1.132
imin            0.000     0.000     0.034
imax            1.869     1.869     1.872
excite_mean     0.029     0.029     0.028
fracstop        1.000     1.000     1.000
cjmean          3.088     3.088     3.088

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       171.1     172.0     170.0
kozaiamp        180.0     180.0     179.9