Orbit Fit and Astrometric record for 99RW214

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: 99RW214   
# Created Sat Oct 20 01:07:30 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   26 observations of   26
# Arc:  15.12y
# First observation: 1998/09/25
#  Last observation: 2013/11/06
# Chi-squared of fit:   356.94 DOF:   46 RMS:  0.65
# Min/Max residuals:    -0.87    1.31
# Exact a, adot, b, bdot, g, gdot:
  1.720744E-05  2.292435E-02 -5.044510E-06  5.451087E-04  2.388022E-02  7.324236E-04
# Covariance matrix:
  1.9604E-13 -1.3809E-13  2.7690E-15 -3.1833E-15 -4.0335E-14 -3.5927E-13
 -1.3809E-13  1.5321E-13 -3.1897E-15  3.6674E-15  4.9849E-14  4.1388E-13
  2.7690E-15 -3.1897E-15  8.2054E-14 -6.7263E-15 -8.3318E-16 -8.7299E-15
 -3.1833E-15  3.6674E-15 -6.7263E-15  1.7819E-15  9.9702E-16  1.0034E-14
 -4.0335E-14  4.9849E-14 -8.3318E-16  9.9702E-16  3.3902E-13  1.1094E-13
 -3.5927E-13  4.1388E-13 -8.7299E-15  1.0034E-14  1.1094E-13  1.1325E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.005816    0.059923   -0.035712   -0.000337   -0.993977  2451081.782594
# Heliocentric elements and errors
Epoch:              2451082.5000  =  1998/09/26
Mean Anomaly:           71.98004 +/-     0.106
Argument of Peri:      284.02021 +/-     0.115
Long of Asc Node:        0.35778 +/-     0.001
Inclination:             1.35661 +/-     0.000
Eccentricity:         0.03399811 +/-    0.0001
Semi-Major Axis:     43.28744077 +/-    0.0042
Time of Perihelion: 2430283.0977 +/-      30.8
Perihelion:          41.81574966 +/-    0.0047
Aphelion:            44.75913188 +/-    0.0049
Period (y)              284.8073 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.87797635 +/-    0.0010
Ecliptic Y            0.08008141 +/-    0.0000
Ecliptic Z           -0.00444432 +/-    0.0000
Ecliptic XDOT         0.00008128 +/-    0.0000
Ecliptic YDOT         0.00263743 +/-    0.0000
Ecliptic ZDOT         0.00006245 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.87803057 +/-    0.0010
Geocenter to KBO     41.87567798 +/-    0.0010
# Hcoef:  7.27

The following table shows the complete astrometric record for 99RW214. 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 (99RW214) followed by the observatory code and reference code for the source of the astrometry.

1998 09  25.281863 00 00 13.75   +00 01 06.6         99RW214   645  C~1gln      
1998 09  25.282280 00 00 13.75   +00 01 06.6         99RW214   645  C~1gln      
1998 09  25.282685 00 00 13.74   +00 01 06.6         99RW214   645  C~1gln      
1998 09  25.283102 00 00 13.74   +00 01 06.6         99RW214   645  C~1gln      
1998 09  25.285174 00 00 13.73   +00 01 06.5         99RW214   645  C~1gln      
1998 09  25.285590 00 00 13.73   +00 01 06.5         99RW214   645  C~1gln      
1999 09  06.40294  00 06 23.02   +00 43 01.7   22.9R 99RW214   568  Ca8546      
1999 09  06.45602  00 06 22.78   +00 43 00.1   23.2R 99RW214   568  Ca8546      
1999 09  06.49330  00 06 22.62   +00 42 59.3   23.7R 99RW214   568  Ca8546      
1999 09  10.45020  00 06 06.14   +00 41 13.2   23.8R 99RW214   568  Ca8546      
1999 09  10.46065  00 06 06.12   +00 41 13.1   23.6R 99RW214   568  Ca8546      
1999 10  09.44664  00 04 00.86   +00 27 48.5   22.8R 99RW214   568  Ca8546      
1999 10  09.49041  00 04 00.68   +00 27 47.4   23.4R 99RW214   568  Ca8546      
1999 11  09.31979  00 02 09.54   +00 15 54.2   23.7R 99RW214   568  Ca8546      
1999 11  09.36788  00 02 09.41   +00 15 53.6   23.3R 99RW214   568  Ca8546      
2000 08  27.33078  00 11 45.55   +01 19 57.0   22.8R 99RW214   807  Cc0856      
2000 08  27.40910  00 11 45.24   +01 19 54.2         99RW214   807  Cc0856      
2000 08  28.51365  00 11 41.05   +01 19 27.1   23.1R 99RW214   568  Cc0856      
2000 08  28.56796  00 11 40.86   +01 19 25.8   23.0R 99RW214   568  Cc0856      
2000 12  27.21565  00 06 07.095  +00 43 53.09  23.3R 99RW214   568  Cl7431      
2000 12  28.22237  00 06 08.286  +00 44 01.07        99RW214   568  Cl7431      
2013 10  05.33816  01 10 45.09   +07 59 26.9   23.4R 99RW214   695  C~0zdB      
2013 10  05.37917  01 10 44.90   +07 59 25.7         99RW214   695  C~0zdB      
2013 10  06.37791  01 10 40.53   +07 58 59.2         99RW214   695  C~0zdB      
2013 11  06.26204  01 08 27.44   +07 45 34.2   22.9R 99RW214   G37  C~0yiW      
2013 11  06.32036  01 08 27.24   +07 45 31.9         99RW214   G37  C~0yiW      

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    -0.78       0.00     0.88
  2   0.0000      0.00    -0.75       0.00     0.89
  3   0.0000      0.00    -0.87       0.00     0.90
  4   0.0000      0.00    -0.85       0.00     0.91
  5   0.0000      0.00    -0.86       0.00     0.87
  6   0.0000      0.00    -0.83       0.00     0.88
  7   0.9476      0.00     0.80       0.00    -0.32
  8   0.9478      0.00     0.53       0.00    -0.52
  9   0.9479      0.00     0.48       0.00    -0.34
 10   0.9587      0.00     0.58       0.00    -0.64
 11   0.9587      0.00     0.96       0.00    -0.45
 12   1.0381      0.00     1.20       0.00    -0.36
 13   1.0382      0.00     1.31       0.00    -0.27
 14   1.1226      0.00     0.86       0.00    -0.54
 15   1.1228      0.00     0.98       0.00    -0.29
 16   1.9221      0.00     0.27       0.00     0.51
 17   1.9223      0.00     0.08       0.00    -0.42
 18   1.9253      0.00    -0.66       0.00    -0.83
 19   1.9255      0.00    -0.37       0.00    -0.81
 20   2.2558      0.00    -0.60       0.00    -0.14
 21   2.2586      0.00    -0.62       0.00    -0.14
 22  15.0282      0.00    -0.03       0.00     0.28
 23  15.0283      0.00    -0.12       0.00     0.17
 24  15.0311      0.00     0.50       0.00     0.12
 25  15.1156      0.00    -0.41       0.00     0.47
 26  15.1158      0.00     0.10       0.00    -0.43

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.

99RW214    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.229    43.229    43.229
ecceobj         0.032     0.032     0.032
incobj          1.360     1.360     1.360
qmin           40.938    40.938    40.938
qmax           45.133    45.133    45.133
amean          42.967    42.967    42.967
amin           42.638    42.638    42.639
amax           43.300    43.299    43.300
emean           0.025     0.025     0.025
emin            0.005     0.005     0.005
emax            0.043     0.043     0.043
imean           2.325     2.325     2.325
imin            1.251     1.251     1.251
imax            3.091     3.091     3.091
excite_mean     0.048     0.048     0.048
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       189.8     189.7     189.8
kozaiamp        180.0     180.0     179.9